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不同包装材料对鲜切马铃薯的保鲜效果

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[目的] 研究不同包装材料对鲜切马铃薯的保鲜效果.[方法] 马铃薯经挑选、去皮后切成1.5~2.0 cm厚的切片,用浓度1%的柠檬酸溶液浸泡护色3 min后,放入塑料托盘中,分别用PE、PVDC和PP/PE保鲜膜或复合袋包装,放入5 ℃的冰柜里冷藏8 d,当天及其后每2 d检测1次样品.[结果] 透气性差的PP/PE包装较其他材料更有利于延缓鲜切马铃薯中还原型抗坏血酸的减少,抑制褐变,同时延缓组织内丙二醛(MDA)的积累和电解质渗出率的增加,从而延缓其衰老.[结论] 不同包装材料对鲜切马铃薯的保鲜效果有影响.
Effects of Different Packaging Materials on Fresh-keeping of Fresh-cut Potatoes
[Objective]The research aimed to study the fresh-keeping effects of different kinds of packaging materials on fresh-cut potatoes. [Method]Potato were chosen, peeled and cut into pieces (1.5-2.0 cm). After being dipped in 1.0 % citric acid solution for 3 min, the potato pieces were placed in plastic trays, covered with PE, PVDC and PE/PP film respectively, and then stored at 5 ℃ for 8 days. The fresh-cut potatoes were measured at 0, 2, 4, 6 and 8 day respectively. [Result]The results showed that PE/PP packaging with low gas-permeability could retain ascorbic acid, inhibit browning, slow down the accumulation of malondialdehyde (MDA) and electrolyte leakage, so as to slow down senescing. [Conclusion]Different kinds of packaging materials had different fresh-keeping effects on fresh-cut potatoes.

Fresh-cut potatoPackagingAscorbic acidMDAElectrolyte leakageFresh-keeping

覃海元、杨昌鹏、潘嫣丽、黄卫萍、陈智理

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广西农业职业技术学院食品工程系,广西南宁,530007

鲜切马铃薯 包装 抗坏血酸 丙二醛 电解质渗出率 保鲜

广西农业职业技术学院自然科学基金

2009

安徽农业科学
安徽省农业科学院

安徽农业科学

CSTPCD北大核心
影响因子:0.413
ISSN:0517-6611
年,卷(期):2009.37(33)
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