壳聚糖植酸天然复合涂膜对鲜切莲藕保鲜效果的研究  

Study of Natural Film with Chitosan Combining Phytic Acids on Preservation of Fresh-cutting Lotus Root

作　　者：于有伟[1,2] 李惠[1] 邸金花[1] 任引哲[1] 

机构地区：[1]山西师范大学化学与材料学院,山西临汾041004 [2]山西师范大学工程学院,山西临汾041004

出　　处：《中国食品学报》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)

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.

关 键 词：莲藕 涂膜 壳聚糖 植酸 

分 类 号：TS255.5[轻工技术与工程—农产品加工及贮藏工程]