Shandong Science ›› 2024, Vol. 37 ›› Issue (2): 127-134.doi: 10.3976/j.issn.1002-4026.20230088

• Environment and Ecology • Previous Articles    

Optimization of preparation of persimmon peel polysaccharide chromium using response surface methodology

MIAO Xuzhong1(), LI Xiufen2, GAO Yanyan3, ZHANG Xue3, ZHANG Xiqing4, QIAO Luqin1,*()   

  1. 1. Engineering Research Center of Forest Pest Management of Shandong Province, College of Plant Protection, Shandong Agricultural University, Tai'an 271018,China
    2. Mount Tai Management Committee, Tai'an 271018,China
    3. Yinan Inspection and Testing Center, Linyi 276300,China
    4. Shandong Jienuo Testing Service Co., Ltd., Yantai 265200,China
  • Received:2023-05-23 Online:2024-04-20 Published:2024-04-09

Abstract:

In this study, the hot water extraction method was utilized to extract polysaccharides from persimmon peel, and the persimmon peel polysaccharides were combined with trivalent chromium ions to prepare persimmon peel polysaccharide chromium. Considering the adsorption rate of chromium as the index, the adsorption process of persimmon peel polysaccharide chromium was optimized using single factor and response surface methodology. The results showed that the optimal preparation process of persimmon peel polysaccharide chromium consisted of the following steps, such as the mass ratio of persimmon peel polysaccharides to chromium chloride was set at 6.7∶1; the reaction time was 150 min; the temperature was set at 82 ℃; and the pH of the adsorption liquid was fixed at 5. Under these conditions, the maximum adsorption rate reached 92.81%. Therefore, this study has shown that persimmon peel polysaccharides can efficiently bind trivalent chromium ions, which can further provide technical support for the development of green pollution-free heavy-adsorption chromium adsorbents or animal nutritional supplements.

Key words: persimmon peel, polysaccharide, chromium adsorption rate, response surface methodology

CLC Number: 

  • TS201.4