包装材料、储存环境及储油罐充氮对亚麻籽油保质期的影响

Effects of packaging materials, storage environment and nitrogen filling of oil tank on shelf life of linseed oil

亚麻籽油富含多不饱和脂肪酸,易氧化,保质期较短。以过氧化值为评价指标,研究包装材料、储存环境及储油罐充氮对亚麻籽油保质期的影响。结果表明:避光包装材料、暗光条件储存,亚麻籽油的保质期可适当延长;不论什么包装材料的亚麻籽油,最佳食用时间限制在3个月内;包装瓶的气密性和灌装压盖的质量一定程度上影响亚麻籽油的保质期;储油罐间歇充氮方式较连续充氮方式节能,两者效用相同,均可延长亚麻籽油的保质期。

Linseed oil is rich in unsaturated fatty acids, which is easy to oxidize, so its shelf life is relatively short. With peroxide value as an evaluation index, the effects of packaging materials, storage environment and nitrogen filling of oil tank on the shelf life of linseed oil were studied. The results showed that the shelf life of linseed oil could be appropriately extended under the conditions of lightproof packaging materials and dark light. The best consumption time of linseed oil was limited to three months regardless of any packaging materials. The airtightness of the packaging bottle and the quality of capping in oil filling affected the shelf life of linseed oil to a certain extent. Compared with continuous nitrogen filling, the intermittent nitrogen filling of the oil tank could save energy, and they had the same effect on extending the shelf life of linseed oil.