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投稿时间:2022-11-05
投稿时间:2022-11-05
中文摘要: 采用电子鼻及吹扫捕集-气相色谱-质谱联用技术(purge and trap-gas chromatography-mass spectrometry,PT-GCMS)分析3 个贮藏温度(10、25、40 ℃)及4 种包装条件(空气、N2、CO2、脱氧)对乌天麻干片的挥发性气味的影响。结果表明:在120 d 的贮藏期内,不同温度及包装下的乌天麻干片挥发性气味存在一定的差异。温度是影响贮藏期乌天麻干片挥发性气味最主要的因素,低温更有利于保持乌天麻干片挥发性成分。其次是包装条件,在同一温度条件下,脱氧处理更有利于保持乌天麻干片的挥发性气味。随着贮藏时间的延长,不同温度及包装条件下,乌天麻干片中挥发性物质在种类和含量上均发生变化,在120 d 贮藏期内,10 ℃脱氧处理组共检测出挥发性成分29 种,总含量为214.52 μg/g,醇类占总挥发性成分的54%;酯类占总挥发性成分的14%;烷烃类占总挥发性成分的10%;与对照组的挥发性成分最为接近。综上所述,10 ℃脱氧包装为乌天麻干片最佳贮藏条件,在该条件下贮藏,乌天麻干片的风味成分损失最小,可在较长贮藏期内有效保留乌天麻干片的风味成分。
中文关键词: 乌天麻干片 贮藏条件 电子鼻 吹扫捕集-气相色谱-质谱联用 挥发性成分
Abstract:The electronic nose and purge and trap-gas chromatography-mass spectrometry(PT-GC-MS)were used to analyze the effect of three storage temperatures(10,25,40 ℃)and four packaging conditions(air,N2,CO2,deoxygenation )on the volatile odor of Gastrodia elata slices. The results indicated that during the 120 d storage period,there were some differences in the volatile odor of dried G. elata slices under different temperatures and packing conditions. Temperature is the most important factor affecting the volatile odor of dried G. elata slices in the storage period,and low temperature is more favorable for preserving the volatile components of dried G. elata slices. The secondary factor is the packaging conditions,and under the same temperature,deoxygenation treatment is more conducive to maintaining the volatile odor of dried G. elata slices.With the extension of storage time,the types and contents of volatile components in dried Gastrodia elata slices have changed under different temperatures and packaging conditions. During the 120 d storage period,the deoxygenation treatment at 10 ℃detected 30 volatile components with a total content of 214.52 μg/g,where alcohols account for 54% of the total volatile components,esters for 14%,alkanes for 10%,close to the volatile content in the control group. Therefore,deoxygenation packaging at 10 ℃is the optimal storage condition for dried G. elata slices,preserving their flavor components with minimal loss,and allowing for effective retention over an extended storage period.
keywords: dried Gastrodia elata slices storage conditions electronic nose purge and trap-gas chromatography-mass spectrometry(PT- GC-MS) volatile components
文章编号:202405016 中图分类号: 文献标志码:
基金项目:贵州省创新平台建设计划项目(黔科中引地〔2020〕4018 号);贵州省科技厅基础研究计划项目(黔科合基础[2019]1013 号)
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