油菜籽热风干燥后储藏品质的研究  

Study of the Rapeseeds' Quality During Storage After Hot - Air Drying

作　　者：杨国峰[1] 和珊[1] 丁超[1,2] 

机构地区：[1]南京财经大学食品科学与工程学院,南京210046 [2]南京农业大学食品科技学院,南京210095

出　　处：《中国粮油学报》2013年第9期97-102,共6页Journal of the Chinese Cereals and Oils Association

基　　金：油菜高效低耗加工技术(2010BAD01B07)

摘　　要：摘要油菜籽经过热风干燥后置于模拟度夏条件下储藏，测定其储藏期间的水分含量、发芽能力、油的酸值、油的过氧化值等品质变化；并用固相微萃取一气质联用法测定储藏期间菜籽的挥发性成分，探索菜籽挥发性成分与菜籽品质之间的关系。结果表明：种用菜籽的干燥温度控制在70℃以下为宜；菜籽油的酸值在储藏期间波动在0．21～0．28mg／g范围内，属于国家二级油品质；油的过氧化值总体呈现缓慢波动上升的趋势，保持在0．22～2．65mmol／kg范围，为国家一级油品质，经110℃高温干燥的菜籽的油过氧化值在储藏至第5个月后开始呈现劣变趋势；挥发性成分2-乙基-1-己醇随着储藏时间的延长，相对含量下降；酸类挥发性成分呈现波动上升的趋势，与菜籽的过氧化值具有很强的线性正相关性。This study was performed to evaluate the quality of rapeseeds during storage period after hot - air dras follows ：70 ℃ or below would be appropriate hot - air drying temperature if rapeseeds were stored for seed - using; the acid value of rapeseed oil remained low between 0.21 - 0.28 mg/g,which belonged to oil quality of No. 2 Class ; peroxide value of rapeseed oil fluctuated between 0.22 -2.65 mmol/kg, and a fission sign was appeared till 5 months＇ storage with the drying temperature up to 110 ℃ ;2 -ethyl- 1 -Hexanol,one of the volatile profiles of rapeseeds, reduced within the storage period ; the relative content of volatile acids appeared to have a high linear positive correla- tion with the oil peroxide value.

关 键 词：油菜籽 热风干燥 储藏品质 挥发性成分 

分 类 号：TS222.1[轻工技术与工程—粮食、油脂及植物蛋白工程]