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投稿时间:2022-08-12
投稿时间:2022-08-12
中文摘要: 采用气相色谱-离子迁移谱(gas chromatography-ion mobility spectrometry,GC-IMS)技术原理,分析“牡育稻78 号”、“牡科稻5 号”、“牡科稻7 号”3 种香稻米中挥发性成分的组成,结合主成分分析(principal component analysis,PCA)进行统计分析。结果发现:辛醛单体、辛醛二聚体、6-甲基-5-庚烯-2-酮在“牡科稻5 号”中含量最少,在其它样品中差异不大;罗勒烯、柠檬烯单体、柠檬烯二聚体在“牡育稻78 号”中含量最多;乙醇、二甲基-1-丁醇在“牡科稻7 号”中含量最多。主成分分析表明,不同品种香稻米挥发性气味成分在气相色谱-离子迁移谱上呈现出一定差异,两个主成分累计贡献率达到84%,说明基于GC-IMS 技术可以实现不同品种香稻米的区分。
中文关键词: 指纹图谱 气相色谱-离子迁移谱 特征风味 香稻米 挥发性成分
Abstract:Gas chromatography-ion mobility spectrometry(GC-IMS)technology was used to analyze the volatile components in three types of fragrant rice,namely'Muyu rice 78','Muke rice 5',and'Muke rice 7'.In addition,principal component analysis(PCA)was performed to carry out statistical analysis.The results showed that the content of octanal monomer,octanal dimer,and 6-Methyl-5-hepten-2-one was the least in 'Muke rice 5',but there was no significant difference in other samples. The content of beta-ocimene,limonene monomer,and limonene dimer was high in the 'Muyu rice 78'. Ethanol and 2-methylbutan-1-ol were the most abundant in'Muke rice 7'.PCA showed that there were some differences in GC-IMS of volatile flavor components of different varieties of fragrant rice,and the cumulative contribution rate of the two principal components reached 84%,indicating that the different varieties of fragrant rice could be discriminated based on GC-IMS technology.
keywords: fingerprint spectrum gas chromatography-ion mobility spectrometry characteristic flavor fragrant rice volatile components
文章编号:202404022 中图分类号: 文献标志码:
基金项目:大庆市指导性科技计划项目(zd-2021-98);黑龙江省省属科研院所科研业务费项目(CZKYF2020A001、CZKYF2022-1-B011);黑龙江省农业科学院2021年度院级课题计划应用研发项目(2021YYYF043);黑龙江省农业科学院“农业科技创新跨越工程”专项(HNK2019CX02);黑龙江省农业科学院—高效、绿色现代农业示范项目(TGY-2020-27);黑龙江省农业科技创新跨越工程重大需求科技创新攻关项目(CX23ZD01)
作者 | 单位 |
卞景阳1,2,孙兴荣1,2*,刘琳帅1,2,邵凯1,2,冯鹏1,2,车野1,胡禧熙1,顾鑫1,徐磊1,李杰1 | 1.黑龙江省农业科学院大庆分院,黑龙江大庆 163319;2.国家耐盐碱水稻技术创新中心东北中心,黑龙江哈尔滨 163316 |
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