SlideShare une entreprise Scribd logo
1  sur  12
MILLING of WHEAT
• Milling refers to the size reduction and
  separation operations used for processing of
  food grains into edible form.
Types of milling
  water used in both methods but they differ in extent of time and temperature
                       combination of water treatment

Wet milling-It is a                      • Dry milling- It is a
 maceration process in                     fractionating process in
 which complete                            this endosperm merely
 dissociation of the                       fragmented into cells.it
 endosperm cell                            is done by soaking
 contents with the                         wheat in water for 8-12
 release of the starch                     hrs.
 granules from the
 protein network.it is
 done by steeping wheat
 for 10 days
Milling separates germ, because it
contains lipids that could cause the
flour to go rancid.
 and bran, because it is unappealingly
dark
Cleaning the wheat
• Separation –any mixture of solid materials can be
  separated into different fractions according to their
  difference in length ,width ,thickness
  ,density,roughness,drag in moving air,electrical
  conductivity and other physical properties.
• Aspirator-This device works like a vacuum cleaner. The
  aspirator sucks up foreign matter which is lighter than
  the wheat and removes it.
• Disc separator-it moves the wheat over a series of disks
  with indentations that collect objects the size of a grain
  of wheat. Smaller or larger objects pass over the disks
  and are removed.
• Scourer-it scrape off dirt and hair by vigorous
  rubbing action of beaters.
• Magnetic separator-with the help of magnets
  it removes small pieces of metals.
• Washer stoner-high speed rotors spin the
  wheat in the water bath.excess water is
  thrown out by centrifugal force.stones drop to
  the bottom and are removed. Lighter material
  float off leaving only the clean wheat.
Preparing the wheat for grinding

• Tempering-moisture is added to aid the
  separation of bran from the endosperm and to
  provide controlled amount of moisture and
  temperature throughout the milling.
Grinding the wheat

• Entoleter-a device with rapidly spinning disks
  which hurl(Throw an object with great force ) the
  grains of wheat against small metal pins. Those
  grains which crack are considered to be
  unsuitable for grinding and are removed.
• Breaker rollers-These rollers are of two different
  sizes and move at different speeds. They also
  contain spiral grooves which crack open the
  grains of wheat and begin to separate the interior
  of the wheat from the outer layer of bran.
• Sifter and Purifier-The product of the breaker rolls
  passes through metal sieves and air current to separate
  it into three categories.
• The finest material resembles a coarse flour and is
  known as middlings or farina. The middlings move to
  the middlings purifier and the other materials move to
  another pair of breaker rolls. About four or five pairs of
  breaker rolls are needed to produce the necessary
  amount of middlings.
• Larger pieces of the interior are known as semolina.
• The third category consists of pieces of the interior
  which are still attached to the bran.
• Reducing rollers-Middlings are ground into flour by
  pairs of large, smooth metal rollers.
• Each time the flour is ground it passes through sieves
  to separate it into flours of different fineness.
• These sieves are made of metal wire when the flour is
  coarse, but are made of nylon or silk when the flour is
  fine.
• By sifting, separating, and regrinding the flour, several
  different grades of flour are produced at the same
  time. These are combined as needed to produce the
  desired final products.
• Yield-maximum 72% wheat is converted into flour.
Processing the flour

• Bleaching agents(in small amounts)are added to
  flour to make it appear whiter (freshly milled
  flour is yellowish) and
• Oxidizing agents(oxidizing agents are added to
  flour to help with gluten development.) are
  usually added to the flour after milling.
• Reducing agents help to weaken the flour by
  breaking the protein network. This will help with
  various aspects of handling a strong dough.
• Aging The flour is matured for one or two
  months.

Contenu connexe

Tendances

Tendances (20)

Dough rheology
Dough rheologyDough rheology
Dough rheology
 
WHEAT...
WHEAT...WHEAT...
WHEAT...
 
Wheat
WheatWheat
Wheat
 
Dough rheology
Dough rheologyDough rheology
Dough rheology
 
Extrusion processingg in food
Extrusion processingg in foodExtrusion processingg in food
Extrusion processingg in food
 
puffed and flaked rice
puffed and flaked rice puffed and flaked rice
puffed and flaked rice
 
Homogenization of Milk
Homogenization of MilkHomogenization of Milk
Homogenization of Milk
 
Properties of all Cereal Grains
Properties of all Cereal Grains Properties of all Cereal Grains
Properties of all Cereal Grains
 
Concentration and Dehydration
Concentration and DehydrationConcentration and Dehydration
Concentration and Dehydration
 
Packaging and storage of egg
Packaging and storage of eggPackaging and storage of egg
Packaging and storage of egg
 
Special types of milk
Special types of milkSpecial types of milk
Special types of milk
 
thermal processing of food
thermal processing of food thermal processing of food
thermal processing of food
 
Parboiling of paddy or rice final.pptx
Parboiling of paddy or rice final.pptxParboiling of paddy or rice final.pptx
Parboiling of paddy or rice final.pptx
 
Khoa - Anas Shaikh - 13FET1006
Khoa - Anas Shaikh - 13FET1006Khoa - Anas Shaikh - 13FET1006
Khoa - Anas Shaikh - 13FET1006
 
Intermediate moisture foods
Intermediate moisture foodsIntermediate moisture foods
Intermediate moisture foods
 
Pulse processing by om
Pulse processing by omPulse processing by om
Pulse processing by om
 
Processing of cereals
Processing of cerealsProcessing of cereals
Processing of cereals
 
Improved Parboiling Methods in India
Improved Parboiling Methods in IndiaImproved Parboiling Methods in India
Improved Parboiling Methods in India
 
Khoa
KhoaKhoa
Khoa
 
Egg preservation and egg products
Egg preservation and egg productsEgg preservation and egg products
Egg preservation and egg products
 

En vedette (7)

Fish processing plant Sri Lanka
Fish processing plant Sri LankaFish processing plant Sri Lanka
Fish processing plant Sri Lanka
 
Milling Procedures (shared using http://VisualBee.com).
Milling Procedures (shared using http://VisualBee.com).Milling Procedures (shared using http://VisualBee.com).
Milling Procedures (shared using http://VisualBee.com).
 
Cereals & Millet Processing
Cereals & Millet Processing Cereals & Millet Processing
Cereals & Millet Processing
 
Flour mill unit
Flour mill unitFlour mill unit
Flour mill unit
 
Fish processing
Fish processingFish processing
Fish processing
 
Fish Processing Learning Module
Fish Processing Learning ModuleFish Processing Learning Module
Fish Processing Learning Module
 
Fish processing ppt
Fish processing pptFish processing ppt
Fish processing ppt
 

Similaire à Milling

Milling and milling equipments
Milling and milling equipmentsMilling and milling equipments
Milling and milling equipments
ketaki patil
 

Similaire à Milling (20)

Suraj ade.pptx
Suraj ade.pptxSuraj ade.pptx
Suraj ade.pptx
 
Cereal and Legume Technology lecture slides3.pdf
Cereal and Legume Technology lecture slides3.pdfCereal and Legume Technology lecture slides3.pdf
Cereal and Legume Technology lecture slides3.pdf
 
Post Harvest Management in Rice
Post Harvest Management in RicePost Harvest Management in Rice
Post Harvest Management in Rice
 
POST-HARVEST TECHNOLOGY OF AGRICULTURAL PRODUCT
POST-HARVEST TECHNOLOGY OF AGRICULTURAL PRODUCTPOST-HARVEST TECHNOLOGY OF AGRICULTURAL PRODUCT
POST-HARVEST TECHNOLOGY OF AGRICULTURAL PRODUCT
 
RICE MILLING chitesh kumar.pptx
RICE MILLING chitesh kumar.pptxRICE MILLING chitesh kumar.pptx
RICE MILLING chitesh kumar.pptx
 
technology of separation of mixture
technology of separation of mixturetechnology of separation of mixture
technology of separation of mixture
 
Primary and minimal processing of fruits and vegetables
Primary  and minimal processing of fruits and vegetablesPrimary  and minimal processing of fruits and vegetables
Primary and minimal processing of fruits and vegetables
 
Milling and milling equipments
Milling and milling equipmentsMilling and milling equipments
Milling and milling equipments
 
MODERN INSTRUMENTS AND MACHINERIES USED IN AYURVEDIC PHARMACIES
MODERN INSTRUMENTS AND MACHINERIES USED IN AYURVEDIC PHARMACIESMODERN INSTRUMENTS AND MACHINERIES USED IN AYURVEDIC PHARMACIES
MODERN INSTRUMENTS AND MACHINERIES USED IN AYURVEDIC PHARMACIES
 
Centrifugation
CentrifugationCentrifugation
Centrifugation
 
Pharmaceutical Engineering: Size separation
Pharmaceutical Engineering: Size separationPharmaceutical Engineering: Size separation
Pharmaceutical Engineering: Size separation
 
Seed Dryers
Seed DryersSeed Dryers
Seed Dryers
 
Journey Of Rice, From Paddy To Parboiled
Journey Of Rice, From Paddy To ParboiledJourney Of Rice, From Paddy To Parboiled
Journey Of Rice, From Paddy To Parboiled
 
Sugarcane
SugarcaneSugarcane
Sugarcane
 
Particle Size reduction
Particle Size reductionParticle Size reduction
Particle Size reduction
 
Feed processing methods
Feed processing methodsFeed processing methods
Feed processing methods
 
Roller milling of wheat, break rollers and reduction rollers.pptx
Roller milling of wheat, break rollers and reduction rollers.pptxRoller milling of wheat, break rollers and reduction rollers.pptx
Roller milling of wheat, break rollers and reduction rollers.pptx
 
Extrusion technology mamta
Extrusion technology mamtaExtrusion technology mamta
Extrusion technology mamta
 
Milling
MillingMilling
Milling
 
Presentation tablet production madhu k s
Presentation  tablet production madhu k sPresentation  tablet production madhu k s
Presentation tablet production madhu k s
 

Dernier

!~+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUD...
!~+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUD...!~+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUD...
!~+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUD...
DUBAI (+971)581248768 BUY ABORTION PILLS IN ABU dhabi...Qatar
 
Quick Doctor In Kuwait +2773`7758`557 Kuwait Doha Qatar Dubai Abu Dhabi Sharj...
Quick Doctor In Kuwait +2773`7758`557 Kuwait Doha Qatar Dubai Abu Dhabi Sharj...Quick Doctor In Kuwait +2773`7758`557 Kuwait Doha Qatar Dubai Abu Dhabi Sharj...
Quick Doctor In Kuwait +2773`7758`557 Kuwait Doha Qatar Dubai Abu Dhabi Sharj...
daisycvs
 

Dernier (20)

Katrina Personal Brand Project and portfolio 1
Katrina Personal Brand Project and portfolio 1Katrina Personal Brand Project and portfolio 1
Katrina Personal Brand Project and portfolio 1
 
Organizational Transformation Lead with Culture
Organizational Transformation Lead with CultureOrganizational Transformation Lead with Culture
Organizational Transformation Lead with Culture
 
joint cost.pptx COST ACCOUNTING Sixteenth Edition ...
joint cost.pptx  COST ACCOUNTING  Sixteenth Edition                          ...joint cost.pptx  COST ACCOUNTING  Sixteenth Edition                          ...
joint cost.pptx COST ACCOUNTING Sixteenth Edition ...
 
Falcon Invoice Discounting: Aviate Your Cash Flow Challenges
Falcon Invoice Discounting: Aviate Your Cash Flow ChallengesFalcon Invoice Discounting: Aviate Your Cash Flow Challenges
Falcon Invoice Discounting: Aviate Your Cash Flow Challenges
 
Phases of Negotiation .pptx
 Phases of Negotiation .pptx Phases of Negotiation .pptx
Phases of Negotiation .pptx
 
BeMetals Investor Presentation_May 3, 2024.pdf
BeMetals Investor Presentation_May 3, 2024.pdfBeMetals Investor Presentation_May 3, 2024.pdf
BeMetals Investor Presentation_May 3, 2024.pdf
 
Buy gmail accounts.pdf buy Old Gmail Accounts
Buy gmail accounts.pdf buy Old Gmail AccountsBuy gmail accounts.pdf buy Old Gmail Accounts
Buy gmail accounts.pdf buy Old Gmail Accounts
 
PHX May 2024 Corporate Presentation Final
PHX May 2024 Corporate Presentation FinalPHX May 2024 Corporate Presentation Final
PHX May 2024 Corporate Presentation Final
 
Power point presentation on enterprise performance management
Power point presentation on enterprise performance managementPower point presentation on enterprise performance management
Power point presentation on enterprise performance management
 
!~+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUD...
!~+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUD...!~+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUD...
!~+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUD...
 
HomeRoots Pitch Deck | Investor Insights | April 2024
HomeRoots Pitch Deck | Investor Insights | April 2024HomeRoots Pitch Deck | Investor Insights | April 2024
HomeRoots Pitch Deck | Investor Insights | April 2024
 
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60% in 6 Months
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60%  in 6 MonthsSEO Case Study: How I Increased SEO Traffic & Ranking by 50-60%  in 6 Months
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60% in 6 Months
 
Falcon Invoice Discounting: Empowering Your Business Growth
Falcon Invoice Discounting: Empowering Your Business GrowthFalcon Invoice Discounting: Empowering Your Business Growth
Falcon Invoice Discounting: Empowering Your Business Growth
 
Quick Doctor In Kuwait +2773`7758`557 Kuwait Doha Qatar Dubai Abu Dhabi Sharj...
Quick Doctor In Kuwait +2773`7758`557 Kuwait Doha Qatar Dubai Abu Dhabi Sharj...Quick Doctor In Kuwait +2773`7758`557 Kuwait Doha Qatar Dubai Abu Dhabi Sharj...
Quick Doctor In Kuwait +2773`7758`557 Kuwait Doha Qatar Dubai Abu Dhabi Sharj...
 
Escorts in Nungambakkam Phone 8250092165 Enjoy 24/7 Escort Service Enjoy Your...
Escorts in Nungambakkam Phone 8250092165 Enjoy 24/7 Escort Service Enjoy Your...Escorts in Nungambakkam Phone 8250092165 Enjoy 24/7 Escort Service Enjoy Your...
Escorts in Nungambakkam Phone 8250092165 Enjoy 24/7 Escort Service Enjoy Your...
 
Getting Real with AI - Columbus DAW - May 2024 - Nick Woo from AlignAI
Getting Real with AI - Columbus DAW - May 2024 - Nick Woo from AlignAIGetting Real with AI - Columbus DAW - May 2024 - Nick Woo from AlignAI
Getting Real with AI - Columbus DAW - May 2024 - Nick Woo from AlignAI
 
New 2024 Cannabis Edibles Investor Pitch Deck Template
New 2024 Cannabis Edibles Investor Pitch Deck TemplateNew 2024 Cannabis Edibles Investor Pitch Deck Template
New 2024 Cannabis Edibles Investor Pitch Deck Template
 
Marel Q1 2024 Investor Presentation from May 8, 2024
Marel Q1 2024 Investor Presentation from May 8, 2024Marel Q1 2024 Investor Presentation from May 8, 2024
Marel Q1 2024 Investor Presentation from May 8, 2024
 
Cracking the 'Career Pathing' Slideshare
Cracking the 'Career Pathing' SlideshareCracking the 'Career Pathing' Slideshare
Cracking the 'Career Pathing' Slideshare
 
Unveiling Falcon Invoice Discounting: Leading the Way as India's Premier Bill...
Unveiling Falcon Invoice Discounting: Leading the Way as India's Premier Bill...Unveiling Falcon Invoice Discounting: Leading the Way as India's Premier Bill...
Unveiling Falcon Invoice Discounting: Leading the Way as India's Premier Bill...
 

Milling

  • 1. MILLING of WHEAT • Milling refers to the size reduction and separation operations used for processing of food grains into edible form.
  • 2. Types of milling water used in both methods but they differ in extent of time and temperature combination of water treatment Wet milling-It is a • Dry milling- It is a maceration process in fractionating process in which complete this endosperm merely dissociation of the fragmented into cells.it endosperm cell is done by soaking contents with the wheat in water for 8-12 release of the starch hrs. granules from the protein network.it is done by steeping wheat for 10 days
  • 3. Milling separates germ, because it contains lipids that could cause the flour to go rancid. and bran, because it is unappealingly dark
  • 4.
  • 5. Cleaning the wheat • Separation –any mixture of solid materials can be separated into different fractions according to their difference in length ,width ,thickness ,density,roughness,drag in moving air,electrical conductivity and other physical properties. • Aspirator-This device works like a vacuum cleaner. The aspirator sucks up foreign matter which is lighter than the wheat and removes it. • Disc separator-it moves the wheat over a series of disks with indentations that collect objects the size of a grain of wheat. Smaller or larger objects pass over the disks and are removed.
  • 6. • Scourer-it scrape off dirt and hair by vigorous rubbing action of beaters. • Magnetic separator-with the help of magnets it removes small pieces of metals. • Washer stoner-high speed rotors spin the wheat in the water bath.excess water is thrown out by centrifugal force.stones drop to the bottom and are removed. Lighter material float off leaving only the clean wheat.
  • 7. Preparing the wheat for grinding • Tempering-moisture is added to aid the separation of bran from the endosperm and to provide controlled amount of moisture and temperature throughout the milling.
  • 8. Grinding the wheat • Entoleter-a device with rapidly spinning disks which hurl(Throw an object with great force ) the grains of wheat against small metal pins. Those grains which crack are considered to be unsuitable for grinding and are removed. • Breaker rollers-These rollers are of two different sizes and move at different speeds. They also contain spiral grooves which crack open the grains of wheat and begin to separate the interior of the wheat from the outer layer of bran.
  • 9.
  • 10. • Sifter and Purifier-The product of the breaker rolls passes through metal sieves and air current to separate it into three categories. • The finest material resembles a coarse flour and is known as middlings or farina. The middlings move to the middlings purifier and the other materials move to another pair of breaker rolls. About four or five pairs of breaker rolls are needed to produce the necessary amount of middlings. • Larger pieces of the interior are known as semolina. • The third category consists of pieces of the interior which are still attached to the bran.
  • 11. • Reducing rollers-Middlings are ground into flour by pairs of large, smooth metal rollers. • Each time the flour is ground it passes through sieves to separate it into flours of different fineness. • These sieves are made of metal wire when the flour is coarse, but are made of nylon or silk when the flour is fine. • By sifting, separating, and regrinding the flour, several different grades of flour are produced at the same time. These are combined as needed to produce the desired final products. • Yield-maximum 72% wheat is converted into flour.
  • 12. Processing the flour • Bleaching agents(in small amounts)are added to flour to make it appear whiter (freshly milled flour is yellowish) and • Oxidizing agents(oxidizing agents are added to flour to help with gluten development.) are usually added to the flour after milling. • Reducing agents help to weaken the flour by breaking the protein network. This will help with various aspects of handling a strong dough. • Aging The flour is matured for one or two months.

Notes de l'éditeur

  1. breaking the grain open and grinding it in a process called milling, which is one of the common processes for making grains digestible and making their nutrients available to us. Stone milling was the only way to make grain into flour for millennia. Stone mills were powered by water or wind to grind the grain between two large stones. Stone mills were common throughout Europe and they were excellent for grinding soft wheat varieties. The grain is poured into a hole in the upper stone, called the runner, and is distributed across the bottom stone, called the sleeper. The movement of the stones crushes the entire grain, which gives the flour a nutty flavor and retains all the vitamins, enzymes, amino acids and fiber contained in the grain (Marriage). The friction between the stones heats the flour up gradually preventing the loss of the enzymes and the vitamins in the flour without compromising the baking quality. The grain is ground once and then sifted to remove large parts of leftover grain.  These pieces can be milled once again to even out the size of the flour. Screens are also used to remove the bran, because it is unappealingly dark, and the germ, because it contains lipids that could cause the flour to go rancid.