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罗非鱼肉中土臭素和2-甲基异莰醇的测定

王国超 李来好 郝淑贤 杨贤庆 辛少平 岑剑伟 刁石强 黄卉 魏涯

食品科学2011,Vol.32Issue(22):188-191,4.
食品科学2011,Vol.32Issue(22):188-191,4.

罗非鱼肉中土臭素和2-甲基异莰醇的测定

Determination of Geosmin and 2-Methylisoborneol in Tilapia Meat

王国超 1李来好 2郝淑贤 2杨贤庆 2辛少平 2岑剑伟 2刁石强 2黄卉 2魏涯2

作者信息

  • 1. 中国海洋大学食品科学与工程学院,山东青岛266003
  • 2. 中国水产科学研究院南海水产研究所,国家水产品加工技术研发中心,广东广州510300
  • 折叠

摘要

Abstract

An analytical method was established for determining geosmin(GEO) and 2-methylisoborneol(MIB) as off-odor compounds in freshwater fish using gas chromatography-mass spectrum(GC-MS) based on microwave assisted distillation followed by solid phase microextraction.Such sample preparation parameters as microwave power,distillation time and carrier gas flow rate were optimized to be 360 W(40% of the maximum power),6 min,and 60 mL/min,respectively.Under the optimized conditions,the detection limits were 0.044 μg/kg for GEO and 0.095 μg/kg for MIB.A good linearity was observed for GEO and MIB over the concentration range of 0.5 to 20 μg/kg with r2 of 0.998 and 0.991,respectively.The recoveries were 42.7% for GEO and 61.9% for MIB.Using this method,the contents of GEO and MIB in a commercially available tilapia meat sample were determined to be 4.97 μg/kg and 1.21 μg/kg,respectively.

关键词

土腥味物质/微波蒸馏/罗非鱼/土臭素/2-甲基异莰醇

Key words

off-flavor compounds/microwave-assisted distillation/tilapia/geosmin/2-methylisoborneol

分类

农业科技

引用本文复制引用

王国超,李来好,郝淑贤,杨贤庆,辛少平,岑剑伟,刁石强,黄卉,魏涯..罗非鱼肉中土臭素和2-甲基异莰醇的测定[J].食品科学,2011,32(22):188-191,4.

基金项目

国家农业产业技术体系项目 ()

国家农业科技成果转化项目(2010GB23260577 ()

2009GB2E200303 ()

2010GB2E000335) ()

广东省科技计划项目(2009A020700004 ()

2008A020100006 ()

2009B020201003) ()

广东省海洋渔业科技推广项目(A200899B02 ()

A200901C01) ()

农业部中央级公益性科研院所基本科研项目 ()

食品科学

OA北大核心CSCDCSTPCD

1002-6630

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