Study on nanofiltration separation of enzymatic hydrolysate for chitosan

Authors

YU Peipei, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China;Synergetic Innovation Center of Food Safety and Quality Control, Jiangsu Province, Wuxi, Jiangsu 214122, China
XIA Wenshui, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China;Synergetic Innovation Center of Food Safety and Quality Control, Jiangsu Province, Wuxi, Jiangsu 214122, China
ZHONG Weiwei, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China;Synergetic Innovation Center of Food Safety and Quality Control, Jiangsu Province, Wuxi, Jiangsu 214122, China
LIU Xiaoli, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China;Synergetic Innovation Center of Food Safety and Quality Control, Jiangsu Province, Wuxi, Jiangsu 214122, China
WANG Bin, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China;Synergetic Innovation Center of Food Safety and Quality Control, Jiangsu Province, Wuxi, Jiangsu 214122, China

Abstract

Based on the previous ultrafiltration separation of chitosan hydrolysate, the technical conditions were investigated, for the nanofiltration separation of ultrafiltrate using roll-type nanofiltration membrane with a relative molecular weight cutoff of 500 Da. The effects of process parameters including the operating pressure and temperature, as well as the pH value of filtrate on the separation and purification of chitosan hydrolysate were studied by indicators of membrane flux, glucosamine removal rate, conductivity and pH value. The optimal operating parameters for nanofiltration were as followed: operation presure 0.50 MPa, operation temperature 35 ℃, and pH 3.0. The final product with 1.21% glucosamine content, 0.15% ash content and 70.25% chitooligosaccharide of 3～6 glucosidic bonds was obtained, and the product yield was 70.12%.

Publication Date

11-28-2018

First Page

11

Last Page

15,44

DOI

10.13652/j.issn.1003-5788.2018.11.003

Recommended Citation

Peipei, YU; Wenshui, XIA; Weiwei, ZHONG; Xiaoli, LIU; and Bin, WANG (2018) "Study on nanofiltration separation of enzymatic hydrolysate for chitosan," Food and Machinery: Vol. 34: Iss. 11, Article 2.
DOI: 10.13652/j.issn.1003-5788.2018.11.003
Available at: https://www.ifoodmm.cn/journal/vol34/iss11/2

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