储藏稻谷品质指标的变化及其差异性  

Changes and differential analysis of the quality indexes of stored paddy

作　　者：周显青[1] 张玉荣[1] 

机构地区：[1]河南工业大学粮油食品学院,郑州450052

出　　处：《农业工程学报》2008年第12期238-242,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家"十五"科技攻关项目(2004BA523A07-1)

摘　　要：为了探讨储藏稻谷品质的变化规律及其影响因素,该文对国内不同储藏区域、储藏年限的180个商品稻谷样品的电导率(ECR)、丙二醛含量(MDAC)、脂肪酸值(FAV)、过氧化氢酶(CAT)、过氧化物酶(POD)、多酚氧化酶(PPO)活性等品质指标进行了测定,然后,采用SPSS10.0统计软件对这些测定数据进行差异分析。结果表明:随着稻谷储藏时间的延长和陈化程度的加深,ECR、MDAC、FAV逐渐增大,而CAT、POD、PPO的活性逐渐降低,这些指标在一定程度上反映不同储藏年限间稻谷品质的差异,其中显著影响稻谷新鲜度的指标是FAV、ECR、MDAC和PPO活性,尤以FAV的差异最大;而不同储藏地域的气候条件以及稻谷类型上的差异也将对储藏稻谷品质指标的变化产生显著的影响。In order to investigate the quality changes of stored paddy and their influencing factors,the quality indexes,such as electrical conductivity rate（ECR）,malondialdehyde content（MDAC）,fatty acid value（FAV）,catalase（CAT）,peroxidase（POD）and polyphenoloxidase（PPO）were measured for 180 commercial paddy samples from different storage regions with different storage time periods.Those measured data were analyzed by SPSS10.0.The results showed that ECR,MDAC and FAV of paddy increased with the storage time prolonging and the deterioration enhancing,while the activities of POD,CAT and PPO decreased.Those indexes to some degree reflect the storage quality differences of paddy stored for different years.The remarkable indexes are FAV,ECR,MDAC and the activity of PPO and the most significant index to paddy freshness is FAV.Furthermore,the climate conditions of different storage regions and paddy types have a significant influence on the changes of quality indexes of stored paddy,as well as the freshness of paddy.

关 键 词：储藏 品质控制 差异性分析 稻谷 

分 类 号：TS210.1[轻工技术与工程—粮食、油脂及植物蛋白工程] S511[轻工技术与工程—食品科学与工程]