摘要
采用胰脂酶分解的方法对几种乌桕[Sapium sebiferum(L.)Roxb.]种子桕脂甘油三酯组成进行了测定,桕脂的甘油三酯是由9—14种甘油三酯所组成。与可可脂相似之处是甘油三酯2-位上的脂肪酸,82—88%为油酸。二饱和酸甘油酯占81—88%,其中以 POP 为主(74—81%);单饱和酸甘油酯占1.8—6.0%;而三饱和酸甘油酯占9.6—15.6%,主要是 PPP(8.5—14.0%)。桕脂经过适当的加工处理,可以做可可脂的代用品。将湖南产的乌桕与广西栽培的4个品种(“大粒鸡爪”、“蜈蚣”、“铜锤”和“小粒鸡爪”)桕脂中的甘油三酯组成比较,以“大粒鸡爪”桕脂中二饱和酸甘油酯的比例最高(88.0%),三饱和酸甘油酯的含量最低(9.6%)。
The triglycerides of fats from several varieties of Sapium sebiferum (L) Rovb.were de- termined by means of pancreatic lipase hydrolvsis technigue.Triglycesrides of the fats are composed of 9—14 kinds of triglycerides.They are similar to Cocoa butter.Fatty acid com- position in 2-position of glycerides is oleic acid in more than 82%.The disaturated glycerides account for 81—88%,in which POP is in the majority (74—81%);the proportion of monosa- turated glycerides is 1.8—6.0%;the trisaturated glycerides hold 9.6—15.6%,in which the main one is PPP (8.5—14.0%).The fats can be used for making Cocoa butter substitute by proper processing. Fat contents of the four varieties (“Da Li Ji Zhao”,“Wu Gong”,“Tong Chui”and“Xiao Li Ji Zhao”)cultivated in Guangxi province are richer (32.0—34.3%) than that of the wild species of the same plant.The proportion of disaturated glycerides is the highest (88.0%) and that of trisaturated glycerides is the lowest (9.6%) in fat from“Da Li di Zhao”.
关键词
乌桕
桕脂
甘油三酯
组成
可可脂代用品
食品
Sapium sebiferum(L.)Roxb.
Seed fat
Triglycerides
Cocoa butter substitute
