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Journal of Agriculture ›› 2024, Vol. 14 ›› Issue (3): 68-72.doi: 10.11923/j.issn.2095-4050.cjas2023-0105

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Oxidase Content Analysis of Wencheng Glutinous Rice Yam

SUN Caixia1(), LIU Yuhong1, XIA Qile2, XU Mingfei1, ZHENG Weiran1   

  1. 1 Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang, China
    2 Food science institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang, China
  • Received:2023-04-28 Revised:2023-07-27 Online:2024-03-16 Published:2024-03-16

Abstract:

In order to understand the background oxidase content of glutinous rice yam, and to facilitate technological research and development for post-harvest processing, seven main samples of glutinous rice yam from Wencheng County were taken as the research objects, and two years tracking analysis was carried out. The contents of Polyphenol oxidase (PPO), Peroxidase (POD) and Superoxide dismutase (SOD) in glutinous rice yam were detected and quantitative data were obtained. The results showed that, oxidase content in glutinous rice yam was affected by particular year and production bases. Oxidase content of different edible parts was SOD 69.15-163.71 U/g, POD 112.34-363.75 U/g and PPO 123.84-195.18 U/g. Oxidase content and browning degree was: middle part> lower part> upper part. The results will be helpful to post-harvest storage and quality control of glutinous rice yam.

Key words: glutinous rice yam, oxidase, enzymatic browning, harvest and storage, quality