There are three classical divisions of the general subject of oils, fats, and waxes will be retained: vegetable oils, animal oils and fats, and waxes. Under each of these headings the general methods of manufacture will discribe for the most important of the illustrative individual members.
The list below are indicates the yields of vegetable oils from some of the usual sources. The two general methods employed in obtaining vegetable fats and oils are expression in use. Solvent extraction has assumed importance in virtually all vegetable oil recovery plants, alone or in combination with pre-pressing. For high oil content seeds, such as cottonseed and safflower seed, usually both expression and extraction are utilized in the recovery systems for higher yields. Obtaining crude vegetable and animal oils involves primarily physical changes or unit operations, but chemical conversion are concerned in the refining and further processing of such oils.
Approximates Oil Yields of Certain Vegetable Oil Materials:
Babassu kernels: 63%
Castor beans: 45%
Corn kernels: 4%
Copra: 63%
Cottonseed: 15%
Flaxseed: 34%
Hempseed: 24%
Kapok Seed: 18%
Palm kernels: 45%
Peanuts in the shell: 30-35%
Peanuts shelled: 45-50%
Perilla seed: 37%
Rapeseed: 35%
Sesame Seed: 47%
Soybeans: 18%
Tung nuts: 50-55%
The list below are indicates the yields of vegetable oils from some of the usual sources. The two general methods employed in obtaining vegetable fats and oils are expression in use. Solvent extraction has assumed importance in virtually all vegetable oil recovery plants, alone or in combination with pre-pressing. For high oil content seeds, such as cottonseed and safflower seed, usually both expression and extraction are utilized in the recovery systems for higher yields. Obtaining crude vegetable and animal oils involves primarily physical changes or unit operations, but chemical conversion are concerned in the refining and further processing of such oils.
Approximates Oil Yields of Certain Vegetable Oil Materials:
Babassu kernels: 63%
Castor beans: 45%
Corn kernels: 4%
Copra: 63%
Cottonseed: 15%
Flaxseed: 34%
Hempseed: 24%
Kapok Seed: 18%
Palm kernels: 45%
Peanuts in the shell: 30-35%
Peanuts shelled: 45-50%
Perilla seed: 37%
Rapeseed: 35%
Sesame Seed: 47%
Soybeans: 18%
Tung nuts: 50-55%
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