基于气相-离子迁移谱技术分析不同生长速度肉鸡肌肉中挥发性有机物的差异

基于气相-离子迁移谱(gas chromatography-ion mobility spectroscopy,GC-IMS)技术分析不同生长速度肉鸡品种肌肉中挥发性有机物的差异。试验选取慢速型鸡(狼山鸡)、中速型鸡(3A,花山麻鸡)、快速型鸡(罗斯308),每个品种母鸡6只,取胸大肌同一部位进行GC-IMS测定。根据GC-IMS法测得85种挥发性有机物,已定性物质29种,主要包括醛类、酮类、醇类等化合物。慢速型狼山鸡肉中醛类和醇类含量显著高于其他类型的3个品种(P<0.05),主要特征物质包括反-2-辛烯醛、戊醛、壬醛、己醛、1-丁醇、乙醇、1-戊醇、1-辛烯-3-醇;中速型3A和花山麻鸡特征物质相似,3-羟基-2-丁酮、乙酸乙酯含量极高;快速型罗斯308大部分物质含量较低,主要特征物质为3-戊酮。综上所述,GC-IMS可以对不同生长速度鸡品种肉品质的风味进行差异分析,可直观和快速地看出不同生长速度鸡品种挥发性有机物的特异性、含量差异和相似度,也可明显区分不同生长速度鸡品种。

The analysis of volatile organic compounds in broiler muscles with different growth rates based on GC-IMS technology

This paper analyzed the volatile organic compounds in the muscles of broiler breeds with different growth rates based on GC-IMS.The broiler breeds with different growth speeds were selected as slow-speed chickens(Langshan chicken),medium-speed chickens(3A,Huashan Ma chickens),and fast-type chickens(Rose 308).There were six broilers of each breed.GC-IMS measurement was performed on the same part of the pectoral muscle.The research results showed that 85 kinds of volatile organic compounds and 29 kinds of qualitative substances have been detected,mainly including aldehydes,ketones,alcohols and other compounds by GC-IMS.The content of aldehydes and alcohols in Langshan chicken of the slow-type chicken was significantly higher than that of the other three types(P<0.05).The main characteristic substances including trans-2-octenal,valeraldehyde,nonanal,hexanal,1-butanol,ethanol,1-pentanol,1-octen-3-ol.The characteristics of 3A and Huashan of the medium-speed chicken were similar,the content of 3-hydroxy-2-butanone and ethyl acetate was extremely high.Moreover,rose 308 of the fast-type chicken had a low content of most substances,and the main characteristic substance was 3-pentanone.In summary,GC-IMS could analyze the difference in flavor of chicken meat quality at different growth rates.GC-IMS could intuitively and quickly detect the specificity and content difference and similarity of volatile organic compounds of broiler breeds with different growth speeds,and could clearly distinguish broiler breeds with different growth speeds.