文献类型：期刊文献

中文题名：中华绒螯蟹性腺加热熟制前后挥发性成分和脂肪酸组成分析

英文题名：Analysis of Volatile Components and Fatty Acids Derived from Eriocheir sinensis Gonad before and after Cooking

作者：高先楚[1];王锡昌[1];顾赛麒[1];陶宁萍[1];庄静[1];谢雨岑[1];邹磊[1];刘明英[2]

机构：[1]上海海洋大学食品学院,上海210306;[2]华东理工大学生物工程学院,上海200237

年份：2014

卷号：30

期号：9

起止页码：265

中文期刊名：现代食品科技

外文期刊名：Modern Food Science and Technology

收录：CSTPCD;;EI(收录号：20144500153626);Scopus;北大核心:【北大核心2011】；

基金："上海市中华绒螯蟹产业技术体系建设"项目(D-8003-10-0208);上海市教委"食品质量与安全"重点学科建设项目(J50704);上海海洋大学研究生科研基金(A1-0209-14-0900-116)

语种：中文

中文关键词：中华绒螯蟹;挥发性成分;显著性差异分析;气味活性值;脂肪酸

外文关键词：Eriocheir sinensis; volatile flavor compounds; significant analysis; odor activity value; fatty acids

摘要：对中华绒螯蟹生/熟性腺中的挥发性成分进行了分离鉴定;同时测定了生鲜和熟制性腺中的脂肪酸组成。结果表明,所测四个样品中共检查出62种物质,对这些物质进行显著性差异分析和气味活性值计算后发现,雌/雄蟹性腺中的挥发性物质存在显著性差异,且在由生变熟的过程中,有大量的醛类、呋喃类、含氮类化合物、含硫类化合物产生,其中变化最为明显的为:3-甲基丁醛、2-甲基丁醛、辛醛、2-戊基呋喃、二甲基二硫化物等物质,这些物质通常具有较高的气味活性值(OAV值),对香气贡献较大。我们推断这些化合物可能是加热过程中由风味前提物质反应分解生成。中华绒螯蟹性腺脂肪酸中不饱和脂肪酸(UFA)高达75%左右,且在由生变熟的过程中,与风味相关性较大的油酸、亚油酸、亚麻酸等变化明显,变化趋势与挥发性物质的变化呈现正相关性,说明脂质是产生蟹性腺风味的重要前体物质。
The volatile flavor compositions of Chinese mitten crab （Eriocheir sinert^is） gonads were trapped by a new material （Mono Trap） and analyzed by gas chromatography-mass spectrometry （GC-MS）; meanwhile, the fatty acids in raw and cooked gonads were also studied. A total of 62 volatile compounds were identified by GC-MS. Male/female gonads existed significant difference. A large number of aldehydes, fumns, nitrogen-containing, sulfur-containing compounds were produced in cooking process, especially 3-methylbutanal, 2-methylbutanal, octanal, 2-pentylfttmn, dimethyl disulfide, which also had high OAVs and played an important role in gonads aroma. It was inferred that these compounds were produced by the decomposition of the aromatic precursors. Unsaturated fatty acids （UFA） in raw/cooked Chinese mitten crab gonad was as high as 75%. Besides, the contents of flavor related acids （e.g.： oleic acid, linoleic acid and linolenic acid） changed remarkably, and positively correlated with the changes of volatile compounds during cooking. Therefore, lipid was the important aromatic precursor of Chinese mitten crab gonad.