摘要
采用1%壳聚糖、1%植酸和壳聚糖植酸复合涂膜处理鲜切莲藕,研究不同处理对鲜切莲藕贮存效果的影响。研究结果表明,复合涂膜处理能够降低鲜切莲藕的失重率和MDA含量,延缓藕片的褐变,抑制POD、PPO、PAL的活性,同时使维生素C和多酚含量维持在较高水平。贮存至第8天,复合涂膜的鲜切莲藕失重率为对照的1/2,MDA含量比对照低18.8%,L值比对照高51.2%。壳聚糖植酸复合涂膜是一种简便有效的贮存鲜切莲藕的方法,效果优于壳聚糖或植酸单一处理。
Using chitosan, phytic acid and their combination to film fresh-cutting lotus root, the effect of different film on preservation was studied. The result showed that compound film with 1% chitosan and 1% phytic acid could an reduce the weight loss rate and MDA content of fresh-cutting lotus root, postpone browning, restrain the activities of POD, PPO and PAL, and keep the content of vitamin C and polyphenol at relatively high level. At the 8 th day, the weight loss rate of fresh-cutting lotus root with compound film was one half of control, MDA content was lower 18.8% and L value was higher 51.2% than control. Compound film with chitosan and phytic acid is a simple but effective method to preserve fresh-cutting lotus root, which is superior to single chitosan or phytic acid.
出处
《中国食品学报》
EI
CAS
CSCD
北大核心
2012年第3期131-136,共6页
Journal of Chinese Institute Of Food Science and Technology
基金
山西省自然科学基金项目(2008011042-3)
关键词
莲藕
涂膜
壳聚糖
植酸
lotus root
film
chitosan
phytic acid
