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脂肪是三价醇与脂肪酸结合的脂类,能溶于乙醚等有机溶剂中。利用乙醚为溶剂以脂肪抽取器抽取样品中的脂肪,然后将溶剂蒸发净,称残余物之重量,即可测得样品中的脂肪含量。一、仪器与试剂索氏脂肪抽取器,电恒温水浴,电烘箱,分析天平,瓷研缽,称量瓶,无水乙醚。二、测定方法1.样品的处理将均匀抽样取来的核桃种子剥去种皮,把种仁均混后再行取样,放入瓷研钵中充分研细。在研磨时为了避免脂肪被分离出和被研缽
Fat is a trivalent alcohol and fatty acid-binding lipids, soluble in ether and other organic solvents. The use of ether as the solvent to extract the sample fat fat, and then the solvent evaporation net, said the weight of the residue, you can measure the fat content of the sample. First, equipment and reagents Soxhlet fat extractor, electric water bath, electric oven, analytical balance, porcelain mortar, weighing bottles, anhydrous ether. Second, the determination of 1 sample processing will be uniform sampling of walnut seeds taken from the seed coat, the seed mix after sampling, into the porcelain mortar in full research fine. To avoid fat being separated and mortar when grinding