SlideShare une entreprise Scribd logo
1  sur  15
Télécharger pour lire hors ligne
Microbiological quality of meat
and meat products marketed in
Tripoli city, Libya: Review
Dr. Yousef M. Elshrek
• From safety perspective, refrigerated meat
and meat products have been linked to
outbreaks of pathogenic bacteria like E. coli
O157:H7 and Salmonella, and many others,
thus, consumers may be exposed to food
borne illness through unsafe preparation of
such products.
• Potential cross-contaminations were
common, with an average events noted per
household. Hands were the most commonly
observed vehicle of potential cross-
contamination.
• The aim of this paper is to review some
microbiological aspects of meat and meat
products distributed in different local
markets in Tripoli city, Libya.
• Studies were conducted separately and in
different occasions, in the years 1986 and
between 2005 – 2012.
• Samples were collected from different places
mainly, restaurants, hotels, houses and other
local markets in Tripoli area and its suburbs.
• Minced meat:
• In a study by (Elshrek et. el. 1986), dealing
with the microbiological quality of ground
beef, fifty one samples were randomly
collected from various butchers and markets
in Tripoli and its suburbs.
• Results indicated that the total plate count
(TPC) ranged between 5.2x103 to 5.1x
107cfu/g (Table 1).
Total plate count(TPC)Coliform bacteriaS. aureus
No. of
samples
contamina-
ted
Range of Counts
No. of samples
contaminatedRange of Counts
No. of samples
contaminatedRange of Counts
045.2×103-5.1×104152.0×102-2.0×310222.0×103-2.0×104
025.2×104-5.1×105122.1×104-2.0×105162.1×104-2.0×105
105.2×105-5.1×106122.1×105-2.0×106102.1×105-2.0×106
355.2×106-5.1×107122.1×106-2.0×107032.1×106-2.0×107
Table (1): Total bacterial count, Coliform and S. aureus of
ground meat sold in Tripoli
Ref. (Elshrek et.al. 1986)
• Beef Burger
• Results indicated that beef burger samples were
highly contaminated with several pathogenic
bacteria such as E. coli (74.5%), E. coli O157:H7
(27.1%), S. aureus (28.8%) and Aeromonas
(18.6%), Table(2).
Meat
Status
Pathogens and Contamination percentage (%)
Aeromonase S. aureus E. coli E. coliO157:H7 Salmonella
Uncooked 18.6 28.8 74.5 27.5 01.7
Cooked 09.6 03.2 05.4 11.9 01.0
Table (2) Percent of pathogenic bacteria Contamination of
uncooked and cooked spiced beef burger sold in Tripoli
Ref. Elshrek et.al. (2008)
• Chicken burger:
• Ali ( 2007 ) investigated the microbiological
quality of uncooked and cooked spiced
chicken burger in some restaurants and fast
food places in Tripoli city and surrounding
areas, using 120 samples (64 cooked and 56
uncooked) .
• The results indicated that all the samples
were heavily contaminated with pathogenic
bacteria , Table (3).
Meat
Status
Pathogens and Contamination percentage (%)
Aeromonase S. aureus E. coli E. coli O157:H7 Salmonella
Uncooked 25.9 29.6 66.6 20.3 12.9
Cooked 03.12 01.65 10.9 04.68 01.56
Table (3) Percent of pathogenic bacteria Contamination Of
uncooked / cooked chicken burger
Ref. Ali (2007)
• Kofta (Meat Balls):
• Alkhaldy(2007), investigated the microbiological
quality of Libyan Kufta(meat balls), using 92
samples collected from 29 houses, 31 wedding
places, 10 restaurants and 7 hotels in Tripoli city
and its surrounding areas.
• As could be seen in Table 4 below
Types of
pathogenic
bacteria
Contamination percentage (%)
Houses Hotels Houses Hotels wedding
places
restaurants
Uncooked Cooked
S .aureus 40.0 42.0 07.0 43.0 23.0 20.0
E.coli 46.6 71.4 - - - -
E.coli O157:H7 13.3 14.2 06.9 14.0 19.4 30.0
Salmonella ssp 20.0 14.2 03.0 0.0 23.0 03.0
Shigella ssp 0.0 0.0 0.0 0.0 0.0 0.0
Aeromonas ssp 13.3 42.0 06.9 14.0 16.0 10.0
Table (4) Percent of pathogenic bacteria Contamination of uncooked / cooked
Kofta (Meat balls) prepared at different places in Tripoli
Ref. (Alkhaldy 2007)
• Camel Meat
• Abed Ala-el (2006) conducted a study dealing
with the microbiological quality of camel meat,
using fresh meat samples from 120 carcasses,
their ages ranged between 1-3 years.
• The samples were collected from abattoirs in
Tripoli area, belongs to the government and
private sector.
• The study conducted over two season periods,
the first (summer) period started on August first
to the end of October 2004, and the second
(winter) period was from December first to the
end of February 2005
• Results of this study showed in the folowing
table(Table5).
Type of pathogen Contamination percentage (%)
First Period Second period
A. hydrophila 65.0 06.0
A. sobria 35.0 94.0
S. aureus 97.0 56.0
Salmonella anatum 04.0 0.0
E. coli 41.0 0.0
E. coli O157:H7 0.0 0.0
Campylobacter 0.0 0.0
Table (5) Percent of some pathogenic bacteria Contamination
of camel meat Sold in Tripoli
Ref. (Abed Ala- el (2006)
• Fresh sausage (Mergaz) :
• A recent study was conducted by Abomengeal, ( 2010)
aimed to evaluate the microbiological quality of
sausages sold in some market places within Tripoli city
using a total of 140 samples.
• Microbiological tests included: Total microbial count,
psychrotrophic bacteria, coliforms and thermo-tolerant
coliforms (fecal) counts (Table 6).
• In a recent study in the same area Ben-Hamza (2012)
indicated that the percentage of contamination E. coli
and E. coli0157:H7 was 81% and 49.95% respectively
(Table 6).
• Using PCR technique aided by biochemical tests she
confirmed the presence of E. coli 0157:H7 virulence
genes Shiga toxin genes (stx1) and (stx 2) in 25% and
24.95% of the samples respectively (Table 6).
Type of pathogen Abomengeal study.
2010
Ben Hamza study
2012
E. coli --------- 81%
E. coli O157:H7 39.3% 49.95%
Salmonella 2.1% -------
Table (6) Percent of some pathogenic bacteria Contamination
of Mergaz Sold in Tripoli
Ref. (Abomengeal (2010) and Ben - Hamza (2012)
• On the light of the above data, one could
conclude that the microbiological quality of
meat and meat products marketed in Tripoli
during the period covered by the cited studies
(2005-2012) were very low and could be
considered unsafe from microbiological view
point due to the high percentage of several
pathogenic bacteria.
• This reflects the low measures of quality control
and no concern regarding personal hygiene and
sanitation and manufacturing practices.

Contenu connexe

Tendances

Hygienic poultry processing
Hygienic poultry processingHygienic poultry processing
Hygienic poultry processingJoseph Alex
 
Utilization of meat Industry by-products and Wastes
Utilization of meat Industry by-products and WastesUtilization of meat Industry by-products and Wastes
Utilization of meat Industry by-products and WastesThiruchenduran Somasundaram
 
Methods of slaughtering, processing & postmortem changes and ageing of meat
Methods of slaughtering, processing & postmortem changes and ageing of meatMethods of slaughtering, processing & postmortem changes and ageing of meat
Methods of slaughtering, processing & postmortem changes and ageing of meatmahabubcvasu
 
Current trends in meat 24.10.2016
Current trends in meat 24.10.2016Current trends in meat 24.10.2016
Current trends in meat 24.10.2016Kaviarasan D
 
Bio preservation of Meat and Meat products
Bio preservation of Meat and Meat productsBio preservation of Meat and Meat products
Bio preservation of Meat and Meat productssundar resan
 
MEAT PROCESSING TECHNOLOGY
MEAT PROCESSING TECHNOLOGYMEAT PROCESSING TECHNOLOGY
MEAT PROCESSING TECHNOLOGYANKIT_BIHOLA
 
Processed Meat Packaging - Anas Shaikh - 13FET1006
Processed Meat Packaging - Anas Shaikh - 13FET1006Processed Meat Packaging - Anas Shaikh - 13FET1006
Processed Meat Packaging - Anas Shaikh - 13FET1006Anas Ejaz Yasmeen Shaikh
 
Quality and safety of animal feed in india
Quality and safety of animal feed in indiaQuality and safety of animal feed in india
Quality and safety of animal feed in indiaVasu Chithiravelu
 
MEAT_MICROBIOLOGY.pptx
MEAT_MICROBIOLOGY.pptxMEAT_MICROBIOLOGY.pptx
MEAT_MICROBIOLOGY.pptxPavanaV3
 
Preservation of meat and its method
Preservation of meat  and its methodPreservation of meat  and its method
Preservation of meat and its methodvikramgodara5
 
Meat Processing & Preservation
Meat Processing & PreservationMeat Processing & Preservation
Meat Processing & PreservationMahmudul Hasan
 
Nutritional qualities of various poultry meat
Nutritional qualities of various poultry meatNutritional qualities of various poultry meat
Nutritional qualities of various poultry meatDr.Sharon Abdul Jameela
 
Microbiological test for meat and milk
Microbiological test for meat and milkMicrobiological test for meat and milk
Microbiological test for meat and milkharanadhreddy2
 

Tendances (20)

Carcass evaluation,grading and cuts
Carcass evaluation,grading and cutsCarcass evaluation,grading and cuts
Carcass evaluation,grading and cuts
 
Meat composition
Meat compositionMeat composition
Meat composition
 
Hygienic poultry processing
Hygienic poultry processingHygienic poultry processing
Hygienic poultry processing
 
Meat ageing
Meat ageingMeat ageing
Meat ageing
 
Utilization of meat Industry by-products and Wastes
Utilization of meat Industry by-products and WastesUtilization of meat Industry by-products and Wastes
Utilization of meat Industry by-products and Wastes
 
Methods of slaughtering, processing & postmortem changes and ageing of meat
Methods of slaughtering, processing & postmortem changes and ageing of meatMethods of slaughtering, processing & postmortem changes and ageing of meat
Methods of slaughtering, processing & postmortem changes and ageing of meat
 
Current trends in meat 24.10.2016
Current trends in meat 24.10.2016Current trends in meat 24.10.2016
Current trends in meat 24.10.2016
 
Bio preservation of Meat and Meat products
Bio preservation of Meat and Meat productsBio preservation of Meat and Meat products
Bio preservation of Meat and Meat products
 
Meat Processing
Meat ProcessingMeat Processing
Meat Processing
 
MEAT PROCESSING TECHNOLOGY
MEAT PROCESSING TECHNOLOGYMEAT PROCESSING TECHNOLOGY
MEAT PROCESSING TECHNOLOGY
 
Processed Meat Packaging - Anas Shaikh - 13FET1006
Processed Meat Packaging - Anas Shaikh - 13FET1006Processed Meat Packaging - Anas Shaikh - 13FET1006
Processed Meat Packaging - Anas Shaikh - 13FET1006
 
Quality and safety of animal feed in india
Quality and safety of animal feed in indiaQuality and safety of animal feed in india
Quality and safety of animal feed in india
 
MEAT_MICROBIOLOGY.pptx
MEAT_MICROBIOLOGY.pptxMEAT_MICROBIOLOGY.pptx
MEAT_MICROBIOLOGY.pptx
 
Preservation of meat and its method
Preservation of meat  and its methodPreservation of meat  and its method
Preservation of meat and its method
 
Meat Processing & Preservation
Meat Processing & PreservationMeat Processing & Preservation
Meat Processing & Preservation
 
Meat
MeatMeat
Meat
 
Animal by products
Animal by productsAnimal by products
Animal by products
 
Egg preservation and egg products
Egg preservation and egg productsEgg preservation and egg products
Egg preservation and egg products
 
Nutritional qualities of various poultry meat
Nutritional qualities of various poultry meatNutritional qualities of various poultry meat
Nutritional qualities of various poultry meat
 
Microbiological test for meat and milk
Microbiological test for meat and milkMicrobiological test for meat and milk
Microbiological test for meat and milk
 

En vedette

Meat & Poultry PowerPoint
Meat & Poultry PowerPointMeat & Poultry PowerPoint
Meat & Poultry PowerPointemurfield
 
Microbiological Standards For Meat
Microbiological Standards For MeatMicrobiological Standards For Meat
Microbiological Standards For MeatPANKAJ DHAKA
 
Meat & Poultry PowerPoint
Meat & Poultry PowerPointMeat & Poultry PowerPoint
Meat & Poultry PowerPointemurfield
 

En vedette (7)

Meat & Poultry PowerPoint
Meat & Poultry PowerPointMeat & Poultry PowerPoint
Meat & Poultry PowerPoint
 
Spoilage of meat
Spoilage of meatSpoilage of meat
Spoilage of meat
 
Microbiological Standards For Meat
Microbiological Standards For MeatMicrobiological Standards For Meat
Microbiological Standards For Meat
 
Microbial Spoilage of Meat
Microbial Spoilage of MeatMicrobial Spoilage of Meat
Microbial Spoilage of Meat
 
Spoilage of meat
Spoilage of meatSpoilage of meat
Spoilage of meat
 
Meat and poultry
Meat and poultry Meat and poultry
Meat and poultry
 
Meat & Poultry PowerPoint
Meat & Poultry PowerPointMeat & Poultry PowerPoint
Meat & Poultry PowerPoint
 

Similaire à Microbiological quality of meat

Microbiological quality of fresh sausage 1
Microbiological quality of fresh sausage 1Microbiological quality of fresh sausage 1
Microbiological quality of fresh sausage 1Univ. of Tripoli
 
Detection of stx gene of e
Detection of stx gene of eDetection of stx gene of e
Detection of stx gene of eUniv. of Tripoli
 
Assessment of Microbial Activity on Meat Sold At Selected Abattoir, Markets a...
Assessment of Microbial Activity on Meat Sold At Selected Abattoir, Markets a...Assessment of Microbial Activity on Meat Sold At Selected Abattoir, Markets a...
Assessment of Microbial Activity on Meat Sold At Selected Abattoir, Markets a...iosrjce
 
Escherichia coli O157 serotype in beef carcasses post slaughterhouse in Nairo...
Escherichia coli O157 serotype in beef carcasses post slaughterhouse in Nairo...Escherichia coli O157 serotype in beef carcasses post slaughterhouse in Nairo...
Escherichia coli O157 serotype in beef carcasses post slaughterhouse in Nairo...ILRI
 
PATHOGENICITY AND ANTIBIOTIC SENSITIVITY OF ESCHERICHIA COLI ISOLATED FROM SU...
PATHOGENICITY AND ANTIBIOTIC SENSITIVITY OF ESCHERICHIA COLI ISOLATED FROM SU...PATHOGENICITY AND ANTIBIOTIC SENSITIVITY OF ESCHERICHIA COLI ISOLATED FROM SU...
PATHOGENICITY AND ANTIBIOTIC SENSITIVITY OF ESCHERICHIA COLI ISOLATED FROM SU...Dr. Jibachha Sah
 
Salmonella and Staphylococcus contamination in pork and chicken in Cambodian ...
Salmonella and Staphylococcus contamination in pork and chicken in Cambodian ...Salmonella and Staphylococcus contamination in pork and chicken in Cambodian ...
Salmonella and Staphylococcus contamination in pork and chicken in Cambodian ...ILRI
 
emergence and remergence of food borne disease food mcrobiology
emergence and remergence of food borne disease  food mcrobiologyemergence and remergence of food borne disease  food mcrobiology
emergence and remergence of food borne disease food mcrobiologysandhyanamadara
 
Hygiene and microbial contamination along the pork value chain in Vietnam
Hygiene and microbial contamination along the pork value chain in VietnamHygiene and microbial contamination along the pork value chain in Vietnam
Hygiene and microbial contamination along the pork value chain in VietnamILRI
 
International Journal of Pharmaceutical Science Invention (IJPSI)
International Journal of Pharmaceutical Science Invention (IJPSI)International Journal of Pharmaceutical Science Invention (IJPSI)
International Journal of Pharmaceutical Science Invention (IJPSI)inventionjournals
 
Bacteriological Assessment of Meat Pie Sold at Ochanja Market Onitsha, Anambr...
Bacteriological Assessment of Meat Pie Sold at Ochanja Market Onitsha, Anambr...Bacteriological Assessment of Meat Pie Sold at Ochanja Market Onitsha, Anambr...
Bacteriological Assessment of Meat Pie Sold at Ochanja Market Onitsha, Anambr...IJEAB
 
Journal club
Journal clubJournal club
Journal clubMeendu
 
Prevalence of Salmonella spp. and Staphylococcus aureus in chicken and pork m...
Prevalence of Salmonella spp. and Staphylococcus aureus in chicken and pork m...Prevalence of Salmonella spp. and Staphylococcus aureus in chicken and pork m...
Prevalence of Salmonella spp. and Staphylococcus aureus in chicken and pork m...ILRI
 
Final E poster WASET June 2014 Initial Examination of Facility and Meat Micro...
Final E poster WASET June 2014 Initial Examination of Facility and Meat Micro...Final E poster WASET June 2014 Initial Examination of Facility and Meat Micro...
Final E poster WASET June 2014 Initial Examination of Facility and Meat Micro...Susan Prattis VMD, Ph.D., MS, Dipl. ACLAM
 
Antimicrobial resistance of Salmonella enterica in pork and vegetable serving...
Antimicrobial resistance of Salmonella enterica in pork and vegetable serving...Antimicrobial resistance of Salmonella enterica in pork and vegetable serving...
Antimicrobial resistance of Salmonella enterica in pork and vegetable serving...ILRI
 
Microbial Spoilage of Meat Pies Sold In Jos Metropolis
Microbial Spoilage of Meat Pies Sold In Jos MetropolisMicrobial Spoilage of Meat Pies Sold In Jos Metropolis
Microbial Spoilage of Meat Pies Sold In Jos Metropolisiosrjce
 

Similaire à Microbiological quality of meat (20)

Nura and yousef
Nura and yousefNura and yousef
Nura and yousef
 
Microbiological quality of fresh sausage 1
Microbiological quality of fresh sausage 1Microbiological quality of fresh sausage 1
Microbiological quality of fresh sausage 1
 
Detection of stx gene of e
Detection of stx gene of eDetection of stx gene of e
Detection of stx gene of e
 
Assessment of Microbial Activity on Meat Sold At Selected Abattoir, Markets a...
Assessment of Microbial Activity on Meat Sold At Selected Abattoir, Markets a...Assessment of Microbial Activity on Meat Sold At Selected Abattoir, Markets a...
Assessment of Microbial Activity on Meat Sold At Selected Abattoir, Markets a...
 
Escherichia coli O157 serotype in beef carcasses post slaughterhouse in Nairo...
Escherichia coli O157 serotype in beef carcasses post slaughterhouse in Nairo...Escherichia coli O157 serotype in beef carcasses post slaughterhouse in Nairo...
Escherichia coli O157 serotype in beef carcasses post slaughterhouse in Nairo...
 
PATHOGENICITY AND ANTIBIOTIC SENSITIVITY OF ESCHERICHIA COLI ISOLATED FROM SU...
PATHOGENICITY AND ANTIBIOTIC SENSITIVITY OF ESCHERICHIA COLI ISOLATED FROM SU...PATHOGENICITY AND ANTIBIOTIC SENSITIVITY OF ESCHERICHIA COLI ISOLATED FROM SU...
PATHOGENICITY AND ANTIBIOTIC SENSITIVITY OF ESCHERICHIA COLI ISOLATED FROM SU...
 
Salmonella and Staphylococcus contamination in pork and chicken in Cambodian ...
Salmonella and Staphylococcus contamination in pork and chicken in Cambodian ...Salmonella and Staphylococcus contamination in pork and chicken in Cambodian ...
Salmonella and Staphylococcus contamination in pork and chicken in Cambodian ...
 
emergence and remergence of food borne disease food mcrobiology
emergence and remergence of food borne disease  food mcrobiologyemergence and remergence of food borne disease  food mcrobiology
emergence and remergence of food borne disease food mcrobiology
 
Hygiene and microbial contamination along the pork value chain in Vietnam
Hygiene and microbial contamination along the pork value chain in VietnamHygiene and microbial contamination along the pork value chain in Vietnam
Hygiene and microbial contamination along the pork value chain in Vietnam
 
Eba ppt.pptx
Eba ppt.pptxEba ppt.pptx
Eba ppt.pptx
 
Eba ppt.pptx
Eba ppt.pptxEba ppt.pptx
Eba ppt.pptx
 
International Journal of Pharmaceutical Science Invention (IJPSI)
International Journal of Pharmaceutical Science Invention (IJPSI)International Journal of Pharmaceutical Science Invention (IJPSI)
International Journal of Pharmaceutical Science Invention (IJPSI)
 
Bacteriological Assessment of Meat Pie Sold at Ochanja Market Onitsha, Anambr...
Bacteriological Assessment of Meat Pie Sold at Ochanja Market Onitsha, Anambr...Bacteriological Assessment of Meat Pie Sold at Ochanja Market Onitsha, Anambr...
Bacteriological Assessment of Meat Pie Sold at Ochanja Market Onitsha, Anambr...
 
Journal club
Journal clubJournal club
Journal club
 
Prevalence of Salmonella spp. and Staphylococcus aureus in chicken and pork m...
Prevalence of Salmonella spp. and Staphylococcus aureus in chicken and pork m...Prevalence of Salmonella spp. and Staphylococcus aureus in chicken and pork m...
Prevalence of Salmonella spp. and Staphylococcus aureus in chicken and pork m...
 
Final E poster WASET June 2014 Initial Examination of Facility and Meat Micro...
Final E poster WASET June 2014 Initial Examination of Facility and Meat Micro...Final E poster WASET June 2014 Initial Examination of Facility and Meat Micro...
Final E poster WASET June 2014 Initial Examination of Facility and Meat Micro...
 
Paper 5_Group 5.pdf
Paper 5_Group 5.pdfPaper 5_Group 5.pdf
Paper 5_Group 5.pdf
 
CAMPYLOBACTERIOSIS PUB
CAMPYLOBACTERIOSIS   PUBCAMPYLOBACTERIOSIS   PUB
CAMPYLOBACTERIOSIS PUB
 
Antimicrobial resistance of Salmonella enterica in pork and vegetable serving...
Antimicrobial resistance of Salmonella enterica in pork and vegetable serving...Antimicrobial resistance of Salmonella enterica in pork and vegetable serving...
Antimicrobial resistance of Salmonella enterica in pork and vegetable serving...
 
Microbial Spoilage of Meat Pies Sold In Jos Metropolis
Microbial Spoilage of Meat Pies Sold In Jos MetropolisMicrobial Spoilage of Meat Pies Sold In Jos Metropolis
Microbial Spoilage of Meat Pies Sold In Jos Metropolis
 

Plus de Univ. of Tripoli

Plus de Univ. of Tripoli (20)

3 COVID-19 and food safety .pdf
3 COVID-19 and food safety .pdf3 COVID-19 and food safety .pdf
3 COVID-19 and food safety .pdf
 
Alanine aminotransferase (alt)
Alanine aminotransferase (alt)Alanine aminotransferase (alt)
Alanine aminotransferase (alt)
 
Contamination of hands1)
Contamination of hands1)Contamination of hands1)
Contamination of hands1)
 
The libyan meals guide
  The libyan meals guide  The libyan meals guide
The libyan meals guide
 
Mutation2
Mutation2Mutation2
Mutation2
 
Bloodborne pathogens
Bloodborne pathogens Bloodborne pathogens
Bloodborne pathogens
 
Child abuse 1
Child abuse 1Child abuse 1
Child abuse 1
 
Fourth stimulus
Fourth stimulusFourth stimulus
Fourth stimulus
 
Alcohol, drug , Tobacco
Alcohol, drug , TobaccoAlcohol, drug , Tobacco
Alcohol, drug , Tobacco
 
Biology of sars co v-2infection
Biology of sars co v-2infection Biology of sars co v-2infection
Biology of sars co v-2infection
 
The different types of mutations
The different types of mutationsThe different types of mutations
The different types of mutations
 
How the johnson & johnson vaccine works
How the johnson & johnson vaccine worksHow the johnson & johnson vaccine works
How the johnson & johnson vaccine works
 
How moderna vaccine works
How moderna vaccine worksHow moderna vaccine works
How moderna vaccine works
 
How the pfizer bio n-tech vaccine works
How the pfizer bio n-tech vaccine worksHow the pfizer bio n-tech vaccine works
How the pfizer bio n-tech vaccine works
 
Dna vs rna
Dna vs rnaDna vs rna
Dna vs rna
 
Protein synthsis
Protein synthsis Protein synthsis
Protein synthsis
 
Corona virus vaccine
Corona virus vaccine Corona virus vaccine
Corona virus vaccine
 
How to read a codons chart
How to read a codons chartHow to read a codons chart
How to read a codons chart
 
Dna vs rna
Dna vs rnaDna vs rna
Dna vs rna
 
What are proteins
What are proteinsWhat are proteins
What are proteins
 

Dernier

General views of Histopathology and step
General views of Histopathology and stepGeneral views of Histopathology and step
General views of Histopathology and stepobaje godwin sunday
 
Presentation on the Basics of Writing. Writing a Paragraph
Presentation on the Basics of Writing. Writing a ParagraphPresentation on the Basics of Writing. Writing a Paragraph
Presentation on the Basics of Writing. Writing a ParagraphNetziValdelomar1
 
AUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptxAUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptxiammrhaywood
 
How to Use api.constrains ( ) in Odoo 17
How to Use api.constrains ( ) in Odoo 17How to Use api.constrains ( ) in Odoo 17
How to Use api.constrains ( ) in Odoo 17Celine George
 
Patterns of Written Texts Across Disciplines.pptx
Patterns of Written Texts Across Disciplines.pptxPatterns of Written Texts Across Disciplines.pptx
Patterns of Written Texts Across Disciplines.pptxMYDA ANGELICA SUAN
 
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptxSandy Millin
 
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptxPractical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptxKatherine Villaluna
 
How to Add a New Field in Existing Kanban View in Odoo 17
How to Add a New Field in Existing Kanban View in Odoo 17How to Add a New Field in Existing Kanban View in Odoo 17
How to Add a New Field in Existing Kanban View in Odoo 17Celine George
 
Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.raviapr7
 
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxPISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxEduSkills OECD
 
How to Make a Field read-only in Odoo 17
How to Make a Field read-only in Odoo 17How to Make a Field read-only in Odoo 17
How to Make a Field read-only in Odoo 17Celine George
 
In - Vivo and In - Vitro Correlation.pptx
In - Vivo and In - Vitro Correlation.pptxIn - Vivo and In - Vitro Correlation.pptx
In - Vivo and In - Vitro Correlation.pptxAditiChauhan701637
 
5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...CaraSkikne1
 
Ultra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptxUltra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptxDr. Asif Anas
 
Diploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdfDiploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdfMohonDas
 
How to Manage Cross-Selling in Odoo 17 Sales
How to Manage Cross-Selling in Odoo 17 SalesHow to Manage Cross-Selling in Odoo 17 Sales
How to Manage Cross-Selling in Odoo 17 SalesCeline George
 
How to Show Error_Warning Messages in Odoo 17
How to Show Error_Warning Messages in Odoo 17How to Show Error_Warning Messages in Odoo 17
How to Show Error_Warning Messages in Odoo 17Celine George
 
Prescribed medication order and communication skills.pptx
Prescribed medication order and communication skills.pptxPrescribed medication order and communication skills.pptx
Prescribed medication order and communication skills.pptxraviapr7
 
UKCGE Parental Leave Discussion March 2024
UKCGE Parental Leave Discussion March 2024UKCGE Parental Leave Discussion March 2024
UKCGE Parental Leave Discussion March 2024UKCGE
 

Dernier (20)

General views of Histopathology and step
General views of Histopathology and stepGeneral views of Histopathology and step
General views of Histopathology and step
 
Presentation on the Basics of Writing. Writing a Paragraph
Presentation on the Basics of Writing. Writing a ParagraphPresentation on the Basics of Writing. Writing a Paragraph
Presentation on the Basics of Writing. Writing a Paragraph
 
Personal Resilience in Project Management 2 - TV Edit 1a.pdf
Personal Resilience in Project Management 2 - TV Edit 1a.pdfPersonal Resilience in Project Management 2 - TV Edit 1a.pdf
Personal Resilience in Project Management 2 - TV Edit 1a.pdf
 
AUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptxAUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptx
 
How to Use api.constrains ( ) in Odoo 17
How to Use api.constrains ( ) in Odoo 17How to Use api.constrains ( ) in Odoo 17
How to Use api.constrains ( ) in Odoo 17
 
Patterns of Written Texts Across Disciplines.pptx
Patterns of Written Texts Across Disciplines.pptxPatterns of Written Texts Across Disciplines.pptx
Patterns of Written Texts Across Disciplines.pptx
 
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
 
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptxPractical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptx
 
How to Add a New Field in Existing Kanban View in Odoo 17
How to Add a New Field in Existing Kanban View in Odoo 17How to Add a New Field in Existing Kanban View in Odoo 17
How to Add a New Field in Existing Kanban View in Odoo 17
 
Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.
 
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxPISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
 
How to Make a Field read-only in Odoo 17
How to Make a Field read-only in Odoo 17How to Make a Field read-only in Odoo 17
How to Make a Field read-only in Odoo 17
 
In - Vivo and In - Vitro Correlation.pptx
In - Vivo and In - Vitro Correlation.pptxIn - Vivo and In - Vitro Correlation.pptx
In - Vivo and In - Vitro Correlation.pptx
 
5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...
 
Ultra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptxUltra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptx
 
Diploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdfDiploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdf
 
How to Manage Cross-Selling in Odoo 17 Sales
How to Manage Cross-Selling in Odoo 17 SalesHow to Manage Cross-Selling in Odoo 17 Sales
How to Manage Cross-Selling in Odoo 17 Sales
 
How to Show Error_Warning Messages in Odoo 17
How to Show Error_Warning Messages in Odoo 17How to Show Error_Warning Messages in Odoo 17
How to Show Error_Warning Messages in Odoo 17
 
Prescribed medication order and communication skills.pptx
Prescribed medication order and communication skills.pptxPrescribed medication order and communication skills.pptx
Prescribed medication order and communication skills.pptx
 
UKCGE Parental Leave Discussion March 2024
UKCGE Parental Leave Discussion March 2024UKCGE Parental Leave Discussion March 2024
UKCGE Parental Leave Discussion March 2024
 

Microbiological quality of meat

  • 1. Microbiological quality of meat and meat products marketed in Tripoli city, Libya: Review Dr. Yousef M. Elshrek
  • 2. • From safety perspective, refrigerated meat and meat products have been linked to outbreaks of pathogenic bacteria like E. coli O157:H7 and Salmonella, and many others, thus, consumers may be exposed to food borne illness through unsafe preparation of such products. • Potential cross-contaminations were common, with an average events noted per household. Hands were the most commonly observed vehicle of potential cross- contamination.
  • 3. • The aim of this paper is to review some microbiological aspects of meat and meat products distributed in different local markets in Tripoli city, Libya. • Studies were conducted separately and in different occasions, in the years 1986 and between 2005 – 2012. • Samples were collected from different places mainly, restaurants, hotels, houses and other local markets in Tripoli area and its suburbs.
  • 4. • Minced meat: • In a study by (Elshrek et. el. 1986), dealing with the microbiological quality of ground beef, fifty one samples were randomly collected from various butchers and markets in Tripoli and its suburbs. • Results indicated that the total plate count (TPC) ranged between 5.2x103 to 5.1x 107cfu/g (Table 1).
  • 5. Total plate count(TPC)Coliform bacteriaS. aureus No. of samples contamina- ted Range of Counts No. of samples contaminatedRange of Counts No. of samples contaminatedRange of Counts 045.2×103-5.1×104152.0×102-2.0×310222.0×103-2.0×104 025.2×104-5.1×105122.1×104-2.0×105162.1×104-2.0×105 105.2×105-5.1×106122.1×105-2.0×106102.1×105-2.0×106 355.2×106-5.1×107122.1×106-2.0×107032.1×106-2.0×107 Table (1): Total bacterial count, Coliform and S. aureus of ground meat sold in Tripoli Ref. (Elshrek et.al. 1986)
  • 6. • Beef Burger • Results indicated that beef burger samples were highly contaminated with several pathogenic bacteria such as E. coli (74.5%), E. coli O157:H7 (27.1%), S. aureus (28.8%) and Aeromonas (18.6%), Table(2). Meat Status Pathogens and Contamination percentage (%) Aeromonase S. aureus E. coli E. coliO157:H7 Salmonella Uncooked 18.6 28.8 74.5 27.5 01.7 Cooked 09.6 03.2 05.4 11.9 01.0 Table (2) Percent of pathogenic bacteria Contamination of uncooked and cooked spiced beef burger sold in Tripoli Ref. Elshrek et.al. (2008)
  • 7. • Chicken burger: • Ali ( 2007 ) investigated the microbiological quality of uncooked and cooked spiced chicken burger in some restaurants and fast food places in Tripoli city and surrounding areas, using 120 samples (64 cooked and 56 uncooked) . • The results indicated that all the samples were heavily contaminated with pathogenic bacteria , Table (3).
  • 8. Meat Status Pathogens and Contamination percentage (%) Aeromonase S. aureus E. coli E. coli O157:H7 Salmonella Uncooked 25.9 29.6 66.6 20.3 12.9 Cooked 03.12 01.65 10.9 04.68 01.56 Table (3) Percent of pathogenic bacteria Contamination Of uncooked / cooked chicken burger Ref. Ali (2007)
  • 9. • Kofta (Meat Balls): • Alkhaldy(2007), investigated the microbiological quality of Libyan Kufta(meat balls), using 92 samples collected from 29 houses, 31 wedding places, 10 restaurants and 7 hotels in Tripoli city and its surrounding areas. • As could be seen in Table 4 below
  • 10. Types of pathogenic bacteria Contamination percentage (%) Houses Hotels Houses Hotels wedding places restaurants Uncooked Cooked S .aureus 40.0 42.0 07.0 43.0 23.0 20.0 E.coli 46.6 71.4 - - - - E.coli O157:H7 13.3 14.2 06.9 14.0 19.4 30.0 Salmonella ssp 20.0 14.2 03.0 0.0 23.0 03.0 Shigella ssp 0.0 0.0 0.0 0.0 0.0 0.0 Aeromonas ssp 13.3 42.0 06.9 14.0 16.0 10.0 Table (4) Percent of pathogenic bacteria Contamination of uncooked / cooked Kofta (Meat balls) prepared at different places in Tripoli Ref. (Alkhaldy 2007)
  • 11. • Camel Meat • Abed Ala-el (2006) conducted a study dealing with the microbiological quality of camel meat, using fresh meat samples from 120 carcasses, their ages ranged between 1-3 years. • The samples were collected from abattoirs in Tripoli area, belongs to the government and private sector. • The study conducted over two season periods, the first (summer) period started on August first to the end of October 2004, and the second (winter) period was from December first to the end of February 2005 • Results of this study showed in the folowing table(Table5).
  • 12. Type of pathogen Contamination percentage (%) First Period Second period A. hydrophila 65.0 06.0 A. sobria 35.0 94.0 S. aureus 97.0 56.0 Salmonella anatum 04.0 0.0 E. coli 41.0 0.0 E. coli O157:H7 0.0 0.0 Campylobacter 0.0 0.0 Table (5) Percent of some pathogenic bacteria Contamination of camel meat Sold in Tripoli Ref. (Abed Ala- el (2006)
  • 13. • Fresh sausage (Mergaz) : • A recent study was conducted by Abomengeal, ( 2010) aimed to evaluate the microbiological quality of sausages sold in some market places within Tripoli city using a total of 140 samples. • Microbiological tests included: Total microbial count, psychrotrophic bacteria, coliforms and thermo-tolerant coliforms (fecal) counts (Table 6). • In a recent study in the same area Ben-Hamza (2012) indicated that the percentage of contamination E. coli and E. coli0157:H7 was 81% and 49.95% respectively (Table 6). • Using PCR technique aided by biochemical tests she confirmed the presence of E. coli 0157:H7 virulence genes Shiga toxin genes (stx1) and (stx 2) in 25% and 24.95% of the samples respectively (Table 6).
  • 14. Type of pathogen Abomengeal study. 2010 Ben Hamza study 2012 E. coli --------- 81% E. coli O157:H7 39.3% 49.95% Salmonella 2.1% ------- Table (6) Percent of some pathogenic bacteria Contamination of Mergaz Sold in Tripoli Ref. (Abomengeal (2010) and Ben - Hamza (2012)
  • 15. • On the light of the above data, one could conclude that the microbiological quality of meat and meat products marketed in Tripoli during the period covered by the cited studies (2005-2012) were very low and could be considered unsafe from microbiological view point due to the high percentage of several pathogenic bacteria. • This reflects the low measures of quality control and no concern regarding personal hygiene and sanitation and manufacturing practices.