食品科学 ›› 2013, Vol. 34 ›› Issue (22): 250-256.doi: 10.7506/spkx1002-6630-201322050

• 分析检测 • 上一篇    下一篇

川鲶挥发性风味成分和脂肪酸分析

龙 斌,王锡昌,张凤枰,曹 静,刘耀敏   

  1. 1.上海海洋大学食品学院,上海 201306;2.通威股份有限公司,四川 成都 610041
  • 收稿日期:2013-06-28 修回日期:2013-10-18 出版日期:2013-11-25 发布日期:2013-12-05
  • 通讯作者: 王锡昌 E-mail:xcwang@shou.edu.cn
  • 基金资助:

    上海市教育委员会“食品质量与安全”重点学科建设项目;四川省科技支撑计划项目

Analysis of Volatile Components and Fatty Acids in Silurus meridionalis Chen×Silurus spp.

LONG Bin,WANG Xi-chang,ZHANG Feng-ping,CAO Jing,LIU Yao-min   

  1. 1. College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China;
    2. Tongwei Co. Ltd., Chengdu 610041, China
  • Received:2013-06-28 Revised:2013-10-18 Online:2013-11-25 Published:2013-12-05
  • Contact: WANG Xi-Chang E-mail:xcwang@shou.edu.cn

摘要:

采用同时蒸馏萃取-气相色谱质谱(SDE-GC-MS)联用分析技术,对川鲶腹肉和背肉的挥发性风味成分进行提取、定性和定量分析;并测定生肉和同时蒸馏萃取后溶液中脂肪酸成分。结果表明:从川鲶腹肉和背肉中分别检测出67和45种挥发性风味成分,相同成分有38种,主要为烃类、醛类、酮类和酯类,其中含量较高的是烃类、醛类,腹肉和背肉中二者的含量分别为4525.36、1889.02ng/g和1706.61、2117.39ng/g;根据分析出的挥发性成分的风味特征可知,对川鲶腹肉挥发性风味贡献较大的物质有己醛、正辛醛、庚醛、壬醛、(Z)-2-庚烯醛、(E)-2-辛烯醛、反式-2,4-癸二烯醛和1-辛烯-3-醇等;川鲶腹肉和背肉脂肪酸主要是不饱和脂肪酸(UFA),分别占脂肪酸总量的69.48%、68.36%。经过同时蒸馏萃取后,川鲶腹肉和背肉中的多不饱和脂肪酸(PUFA)分别从35.36%、34.12%降到33.04%、32.51%。多不饱和脂肪酸是风味的重要前体物质。

关键词: 川鲶, 挥发性成分, 脂肪酸, 同时蒸馏萃取, 气相色谱-质谱联用

Abstract:

The volatile flavor composition of farmed Silurus meridionalis Chen×Silurus spp. was analyzed by simultaneous
distillation extraction and gas chromatography-mass spectrometry (SDE-GC-MS). Totally 67 volatile compounds were
isolated and identified from belly meat, and 45 compounds from dorsal meat, in which 38 compounds including hydrocarbons,
aldehydes, ketones and esters were common to both. The contents of hydrocarbons and aldehydes were 4525.36 ng/g and
1889.02 ng/g in belly meat and 1706.61 ng/g and 2117.39 ng/g in dorsal meat, respectively. The major compounds that
contributed the most to the flavor of Silurus meridionalis Chen×Silurus spp. included hexanal, octanal, heptanal, nonanal,
(Z)-2-heptenal, (E)-2-octenal, (E,E)-2,4-decadienal, and 1-octen-3-ol. Unsaturated fatty acids (UFA) were the major fatty
acid components in both belly meat and dorsal meat, which accounted for 69.48% and 68.36% of the total fatty acids,
respectively. After SDE, the concentrations of polyunsaturated fatty acids (PUFA) in raw belly meat and dorsal meat
dropped from 35.36% and 34.12% to 33.04% and 32.51%, respectively. PUFAs were the important aromatic precursors in
Silurus meridionalis Chen×Silurus spp. meat.

Key words: Silurus meridionalis Chen×, Silurus spp.;volatile flavor compounds;fatty acids;simultaneous distillation extraction (SDE);gas chromatography-mass spectrometry (GC-MS)

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