http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Hongjie Bian,Gaoyang Wang,Mengfei Cao,Ziyuan Wang,Jiandong Cui 한국화학공학회 2020 Korean Journal of Chemical Engineering Vol.37 No.6
Polyvinyl alcohol (PVA) is a synthetic polymer that is difficult to degrade in nature. In this study, we synthesized PVA-degrading enzymes (PVAase)-Cu3(PO4)2 hybrid nanoflowers by using crude PVAase from Bacillus niacini for PVA degradation. The influences of PVAase concentration, Cu2+ concentration, and incubation time on the nucleation and activity of the PVAase hybrid nanoflower were investigated. The maximal activity recovery of the PVAase hybrid nanoflower was approximately 85% at 0.25 mg/mL of PVAase, 0.36mM Cu2+, and 72 h incubation time. The optimum temperature and pH of PVAase did not change before and after immobilization. Compared with free PVAase, the PVAase hybrid nanoflower showed high thermal stability and storage stability. Additionally, the PVAase hybrid nanoflower displayed excellent reusability after eight cycles and promising PVA degradability, indicating its potential application in PVA degradation.