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油脂分提方面的資料!油脂分提是一種物理過程動物油脂的分提

油脂是由多種甘三酯所組成的混合物,在定溫度下,將油脂分離成不同甘三酯組分的過程即爲分提。油脂分提是種物理過程,不使用昂貴或危險化學添加劑,沒有化學反應,沒有損耗,不産生汙水。油脂分體如葵花油分體,棉籽油、米糠油分提、魚油、豬油、雞油等動物油脂的分提等等。
1.棉籽油分提
棉籽油是大宗油脂之,其脂肪酸組成中棕榈酸占20%~22%,油酸30%~35%,亞油酸40%~45%;棉籽油熔點爲10~15.6℃。作爲級食用油脂,棉籽油熔點偏容易渾濁,在冬季使用受到限制,價格低廉。通過分提,得到液油和固油,可提油脂的附加價值和食用性。
2.魚油、豬油、雞油等動物油脂的分提
采用分提法將動物油中色白、透明有濃郁肉香的液態動物油脂分提出來,得到的油品比原動物油脂中膽固醇含量低50%,大的提升了動物油脂營養價值,具有很的經濟價值。
3.混合脂肪酸的分離
根據脂肪酸碳鏈長度,減壓蒸餾分離出短碳鏈(C12)、中碳鏈(C14)和長碳鏈(C16,C18)。然而從不飽和脂肪酸中分離飽和脂肪酸,由于它們之間的沸點差異非常小,通過蒸餾不能有效分離且生産成本。遠洋公司采用幹法分提,將混合脂肪酸分離成不同熔點不同用途的脂肪酸産品。
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.

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