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Effect of Different Postharvest Treatments on Preservation of Chinese Water Chestnut

YIN Lu,PENG Yong,MEI Jun,LI Yun-fei   

  1. 1. School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China;
    2. Bor Luh Food Safety Center, Shanghai Jiao Tong University, Shanghai 200240, China
  • Online:2013-10-25 Published:2013-09-28

Abstract:

The effect of NaClO disinfection, chitosan/kudzu starch blended coating and their combination was analyed on
weight loss, texture profile analysis (TPA), respiration rate, electric conductivity and total soluble solid (TSS) of Chinese
water chestnut (CWC) during postharvest storage at 4 ℃. Results showed that chitosan/kudzu starch film inhibited the
deerioaration of CWC quality during storage and NaClO disinfection combined with chitosan/kudzu starch film was more
efficient for improving the postharvest quality of CWC. After 25-day storage, weight loss was 3.35% and TSS increased by
1.02% compared with control. Besides, respiration rate decreased by 0.72 mg CO2/(g•h) and TPA was better maintained.
This study shows NaClO disinfection combined with chitosan/kudzu starch film behaved better in preservation of CWC.

Key words: Chinese water chestnut (CWC), preservation, NaClO, chitosan/kudzu starch film