基于顶空固相微萃取-气相色谱-质谱法分析加速氧化过程中全脂牛羊乳粉挥发性化合物  

HS-SPME-GC-MS Analysis of Volatile Compounds in Whole-Fat Cow and Goat Milk Powder during Accelerated Oxidation

作　　者：薛海燕[1] 李欣雨 孟毅 贺宝元 张磊[1] 刘晓凤 马军 XUE Haiyan;LI Xinyu;MENG Yi;HE Baoyuan;ZHANG Lei;LIU Xiaofeng;MA Jun(School of Food Science and Engineering,Shaanxi University of Science and Technology,Xi’an 710021,China;Shaanxi Jinniu Dairy Co.Ltd.,Weinan 714000,China;College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science and Technology,Xi’an 710021,China)

机构地区：[1]陕西科技大学食品科学与工程学院,陕西西安710021 [2]陕西金牛乳业有限公司,陕西渭南714000 [3]陕西科技大学轻工科学与工程学院,陕西西安710021

出　　处：《食品科学》2024年第10期272-280,共9页Food Science

基　　金：陕西省秦创原“科学家+工程师”队伍项目(2022KXJ-011);陕西科技大学博士启动基金项目(2023BJ-20);陕西省科技计划项目(2022GY-361,2020ZDLNY02-09)。

摘　　要：为探究全脂牛羊乳粉在储存过程中风味物质的变化,本研究采用顶空固相微萃取-气相色谱-质谱技术对加速氧化过程中全脂牛羊乳粉挥发性化合物进行分析。研究表明,全脂牛乳粉和全脂羊乳粉中分别鉴定出56、63种挥发性物质,主要为酸类、醇类、羰基类、酯类、芳香族类、杂环类等挥发性化合物。通过主成分分析和聚类热图分析,在全脂牛羊乳粉中筛选出10种显著性差异挥发性化合物,全脂牛乳粉在储存过程中丁酸相对含量降低,2-壬酮、1-氯戊烷相对含量升高;全脂羊乳粉中壬醛、辛酸、丙酸、丁羟甲苯相对含量降低,苯甲醛、2-庚酮、烯丙基正丙酯相对含量升高。In order to investigate the changes of flavor substances in whole-fat cow and goat milk powder during storage,the volatile compounds of whole-fat cow and goat milk powder during accelerated oxidation were analyzed using headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry(HS-SPEM-GC-MS).The results indicated that 56 and 63 volatile substances were identified in whole-fat cow and goat milk powder,respectively,mainly including acids,alcohols,carbonyls,esters,aromatics and heterocyclic compounds.Ten significantly differential volatile compounds were identified between whole-fat cow and goat milk powder by principal component analysis(PCA)and cluster analysis(CA).The relative content of butyric acid decreased and the relative content of 2-nonanone and 1-chloropentane increased in whole-fat cow milk powder during accelerated storage.The relative contents of nonanaldehyde,octanoic acid,propionic acid,and butylhydroxytoluene decreased,and the relative contents of benzaldehyde,2-heptanone,and allyl n-propyl ester increased in whole-fat goat milk powder.

关 键 词：全脂牛乳粉 全脂羊乳粉 顶空固相微萃取-气相色谱-质谱联用 挥发性化合物 

分 类 号：TS252.51[轻工技术与工程—农产品加工及贮藏工程]