(毕业论文 字数:3504 页数:5)摘要:本猪肉香精工艺研究以酵母抽提物为主要原料,在高压灭菌锅中进行热反应,并对反应时间、温度、反应物的加入量等工艺参数进行了探讨。实验结果表明,猪肉香精的热反应最佳工艺条件为:酵母抽提物10g(19.65%),猪肉酶解液10g(19.65%),Hvp(水解植物蛋白)5g(9.82%),半胱氨酸1g(1.96%),甘氨酸1g(1.96%),木糖1g(1.96%),再根据瓶中已有的反应物的重量,加入45%去离子水,在高压灭菌锅中以120℃,反应60min,制得猪肉香味较强、总体香气较好的猪肉味香精。并将该香精的香气挥发物分离、浓缩,再用GC-MS分析后,鉴定出2-甲基-3呋喃硫醇、2-呋喃甲硫醇、二氢-2-甲基-3(2H)-噻吩酮、5-甲基-2-噻吩基甲醛、十六碳醛、十八碳醛等重要的肉香味化合物,并证明了添加了酵母抽提物反应的猪肉香精的重要肉香味化合物比较多。 Abstract: In this paper, meat flavors from yeast extract as main material which made on Maillard reaction were prepared. In addition, the experiments were investigated the reaction time, the temperature and the dosage of reactant. The experimental result showed that the best reaction condition as follow: yeast extract 10g(19.65%), enzymatically hydrolyzed pork 10g(19.65%), HVP 5g(9.82%), cysteine 1g(1.96%), glycin 1g(1.96%), xylose 1g(1.96%), added a water yield 45%, reaction temperature is 120℃, reaction time is 60 minutes. The experiments use this method were obtained fairly good and strong pork flavors.Finally,2-Methyl-3-furanthiol,2-Furanmethanethiol,3(2H)-Thiophenone-dihydro-2-methy,5-Methyl-2-thiophenecarboxaldehyde, Hexadecanal, Octadecanal were identified through GC-MS. The experiment showed that more meat flavor compounds were produced in Maillard reaction system which was added yeast extract. 目录 1 材料与方法 近年来,随着人们生活水平的提高人们对饮食的内容提出了新的要求,各类食品日益朝着天然、方便、美味及多功能的方向发展,食品调味料也已由先前使用的酿造调味料或化学调味料转向具有更高级味感的天然复合调味料方向生产;同时调味品市场也正向着中高档、美味、方便、天然、营养的复合调味品方向发展。 |
酵母抽提物生产猪肉香精的工艺研究
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