核农学报2024，Vol.38Issue(11)：2155-2164,10.DOI:10.11869/j.issn.1000-8551.2024.11.2155
小麦籽粒储藏特征挥发物质分析与品质评价
Analysis of Characteristics Volatile Organic Compounds and Quality Evaluation of Wheat Kernels Storage
摘要
Abstract
Grain storage and quality identification are crucial for ensuring grain security and reducing grain losses.To screen for the key volatile organic compounds(VOCs)during the storage process of wheat kernels,wheat grains were stored at 40℃and relative humidity(RH)of 65%for 28 days.The changes of the VOCs,germination rate,fatty acid value,malondialdehyde(MDA)content,catalase(CAT),peroxidase(POD)and superoxide dismutase(SOD)activities were analyzed when the wheat kernels were stored for 0,7,14,21,28 days.The results indicated that with prolonged storage time,the total content of VOCs significantly decreased,MDA content increased significantly(except for 21-28 d),and the germination rate and the activity of antioxidant protective enzymes(CAT,POD and SOD)all showed a declining trend.Through the correlation analysis between wheat VOCs and storage quality indicators,it was found that tert-butanol,2-hexenal,ethylene glycol dimethyl ether,2-pentylfuran,heptanal,octanal,3-methyl-2-butenal,1-octen-3-one and isopropenyl acetone were the key VOCs for wheat kernels storage.Stepwise linear discriminant analysis demonstrated that the correct classification effect of the above characteristic VOCs on samples at different storage was 98%,which could be used as indicators for the identification of wheat grain storage quality.This study provides support for quality identification during grain storage.关键词
小麦籽粒/特征挥发物质/粮食储藏/品质鉴别Key words
wheat kernels/characteristic volatile organic compounds(VOCs)/grain storage/quality identification引用本文复制引用
刘雨,任书炜,孙倩倩,张瑞,张磊,郭波莉,李明,张影全..小麦籽粒储藏特征挥发物质分析与品质评价[J].核农学报,2024,38(11):2155-2164,10.基金项目
中国农业科学院科技创新工程(CAAS-ASTIP-2023-IFST),现代农业产业技术体系建设专项(CARS-03) （CAAS-ASTIP-2023-IFST）
