油脂分提方面的资料！油脂分提是一种物理过程动物油脂的分提

油脂是由多种甘三酯所组成的混合物，在定温度下，将油脂分离成不同甘三酯组分的过程即为分提。油脂分提是种物理过程，不使用昂贵或危险化学添加剂，没有化学反应，没有损耗，不产生污水。油脂分体如葵花油分体，棉籽油、米糠油分提、鱼油、猪油、鸡油等动物油脂的分提等等。
1.棉籽油分提
棉籽油是大宗油脂之，其脂肪酸组成中棕榈酸占20%～22%，油酸30%～35%，亚油酸40%～45%；棉籽油熔点为10～15.6℃。作为级食用油脂，棉籽油熔点偏容易浑浊，在冬季使用受到限制，价格低廉。通过分提，得到液油和固油，可提油脂的附加价值和食用性。
2.鱼油、猪油、鸡油等动物油脂的分提
采用分提法将动物油中色白、透明有浓郁肉香的液态动物油脂分提出来，得到的油品比原动物油脂中胆固醇含量低50%，大的提升了动物油脂营养价值，具有很的经济价值。
3.混合脂肪酸的分离
根据脂肪酸碳链长度，减压蒸馏分离出短碳链（C12）、中碳链（C14）和长碳链（C16,C18）。然而从不饱和脂肪酸中分离饱和脂肪酸，由于它们之间的沸点差异非常小，通过蒸馏不能分离且生产成本。企鹅公司采用干法分提，将混合脂肪酸分离成不同熔点不同用途的脂肪酸产品。
Oil Fractionation
Oil is a compound of many kinds of glycerol triester. Oil fractionation is the process of separating oil into different glycerol triesters at certain temperatures. Oil fractionation is a physical process, with no expensive or hazardous chemical additives, no chemical reaction, no loss and waste water. Oil fractionation is applied in processing sunflower oil, cottonseed oil, rice bran oil, fish oil, lard oil, chicken oil etc.

1) Cottonseed oil fractionation
Cottonseed oil is one of the largest oil types, whose fatty acid is composed of 20%~22% palmitic acid, 30%~35% oleic acid, 40%~45% linoleic acid. The melting point of cottonseed oil is 10~15.6 ℃. As the high-grade edible oil, cottonseed oil is not widely used in winter because of its easy turbidity caused by higher melting point, so its price is also low. By fractionation, liquid and solid oil can be obtained, which can increase oil' added value and edibility.
2) animal oil fractionation, such as fish oil, lard oil, chicken oil etc.
With the fractionation, separate the white and transparent hydraulic oil from animal oil. The Cholesterol in fractionated oil is 50% less than that in crude oil, which greatly improves the nutritive value of animal oil and has a very high economic value.
3) separation of mixed fatty acids
According to the carbon chain length of fatty acids, separate short carbon chain (C12), medium carbon chain (C14) and long carbon chain (C16, C18) by vacuum distillation, and then separate the saturated fatty acid from the unsaturated fatty acid. Owing to the little boiling point differences - between them, they can't be fully separated and also will has high production cost. Our company uses dry fractionation to separate the mixed fatty acids into various fatty acids of different melting point and application.