婴幼儿米粉货架期的预测及货架期内营养成分的变化分析

Shelf-life Prediction and Nutrients Change Analysis during Shelf-life of Infant Rice Cereal

本文设置了2个外部环境37℃75%RH和47℃75%RH对婴幼儿米粉的货架期进行预估,并对米粉货架期内维生素和矿物质的衰减情况进行了分析。结果表明,铁听充氮包装米粉在37℃75%RH和47℃75%RH下的货架期分别为210~225和75 d,从而计算得出其在25℃75%RH下的货架期为722~841 d。货架期内维生素A、泛酸的稳定性最差,货架期最高衰减率分别可达28.96%和24.47%;其次,维生素B1、维生素B2、叶酸、维生素E和维生素C的稳定性较差,货架期内最高衰减率分别为18.46%、18.97%、18.53%、13.96%和12.67%;维生素D、维生素B6、维生素B12、烟酸、生物素以及铁的稳定性较好,在整个货架期内基本无衰减。

Two external environments(37 ℃ 75% RH and 47 ℃ 75% RH)were set up to predict the shelf-life and analyze the nutrient decay of infant rice cereal. The results indicated that the shelf-life of infant rice cereals packed by nitrogen-filled iron was 722~841 d at 25 ℃ 75% RH which was calculated by the shelf-life at 37 ℃ 75% RH(210~225 d)and 47 ℃ 75% RH(75 d). The stability of vitamin A and pantothenic acid were the worst and the highest decay rates were 28.96% and 24.47%,respectively. And the stability of vitamin B1,vitamin B2,folic acid,vitamin E and vitamin C were poor and the highest decay rates were 18.46%,18.97%,18.53%,13.96% and 12.67%,respectively. The stability of vitamin D,vitamin B6,vitamin B12,niacin,biotin and iron were best with almost no decay during shelf-life.