TY  - JOUR
AU  - Wu, Xinyi 
AU  - Ding, Xiao 
AU  - Zhang, Ze 
AU  - Xu, Ziyi 
AU  - Zhang, Jiehan 
AU  - Zhao, Wen 
AU  - Chen, Yiyong 
PY  - 2021
TI  - Characterization, Antioxidant Activities and Optimization of Preparation Process of a Auricularia Polytricha Polysaccharide-Zinc (II) Complex
JF  - American Journal of Biochemistry and Biotechnology
VL  - 17
IS  - 1
DO  - 10.3844/ajbbsp.2021.118.129
UR  - https://thescipub.com/abstract/ajbbsp.2021.118.129
AB  - In our previous work, a novel polysaccharide APP3a from Auricularia polytricha was successfully isolated and purified. Response surface methodology was used to optimize the preparation process of APP3a-Zn on the basis of the single factor experiments. Characterization of APP3a-Zn was carried out and its antioxidant activity was also investigated. The result showed that the best preparation process of APP3a-Zn was chelation time 4.45 h, chelation temperature 49.37°C and pH 4.68. The weight loss of APP3a-Zn was slightly smaller than that of APP3a within the heating temperature range and the crystal structure of APP3a-Zn had undergone tremendous changes compared with APP3a. APP3a-Zn had stronger antioxidant activity than APP3a. The results indicated that chelation with zinc enhanced the antioxidant activity of APP3a. In the food industry, APP3a-Zn had great potential as a new zinc supplement with antioxidant activity.