3. Introduction
Oilseed crops are grown primarily for the oil contained in the seeds.
Oil crops include both annual and perennial plants whose seed, fruits,
or mesocarp and nuts are valued mainly for edible or industrial oil that
are extracted from them.
Heavy metal stress is major abiotic stresses that limit the oil crop
growth and development.
Antioxidant defenses system enhance the plant tolerance against metal
induced toxicity.
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4. Cont…..
Many varieties of groundnut were developed and released by research
organizations.
‘Tissa’ and ‘Indhi’ are leading in the province.
The variety ‘Walawa’ is confectionary type, which can be used for
confectionary industry.
Gingelly oil extraction practices using “ chekku “ is popular in Jaffna,
Vavunia and Kilinochchi districts.
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5. Extent and production of oil crops in
northern province
• Oil crops that are being cultivated in the region are sesame and
groundnut.
• Sesame used to extract oil for cooking purposes
• Groundnut is used for raw consumption
• Sesame cultivation in Jaffna is more than other districts due to high
demand for oil.
• Sesame cultivation take place in the paddy fields after harvesting.
Irrigated cultivation is very much low.
• Oil extraction from gingelly through traditional method.
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6. Cont….
There are 150 small traditional mills utilized for oil extraction.
The by- products can be used for an animal feed.
Castor oil production is to be evaluated interms of market and economic
production.
Weaknesses in this production system:-
o No seed supply mechanisms
o Use of old varieties
o lack of value added product preparation
o poor crop managements
o Traditional cultivation methods
o No proper organization of market network
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7. Value addition to groundnut
• Conventional oven roasting
• Salted peanut
i. Conventional oven peanut
ii. Microwave oven roasting
iii. Oil roasting (French roasting)
• Frozen unshelled groundnut product
• Groundnut milk
• Peanut butter
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8. Value addition to sesame
• Sesame oil is the main value added product of the sesame seeds. It can
be used as
i. Cooking purpose
ii. Religious purpose
iii. Making some cosmetics
• Seeds can be used to make sweet items
• After the oil extraction seed cakes can be feed to animals (sesame
poonak)
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9. Value addition to mustard
• In Jaffna normally mustard is cultivating in small scale
• Mainly by-products of mustard are using for animal consumption
• But also it is using for human consumption
i. Mustard oil
ii. Mustard cream
iii. Creamy mustard souse
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10. Summary
• Groundnut, sesame, mustard are the main oil crops cultivated in Jaffna
• Mainly Jaffna farmers are doing some value addition for these oil
crops for enhance the palatability and income from their crops
• These value addition processes are doing commercially and small
scales
• Sometimes they are adding values for these crops for only their home
consumption
• From these value addition process, farmers can gain high income
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