Adsorption kinetics and mechanism of di‐n‐butyl phthalate by Leuconostoc mesenteroides. Issue 11 (12th October 2020)

• Record Type: Journal Article
• Authors: Zhao, Lili; Li, Xinlei; Yang, Qingxiang; Zhuang, Di; Pan, Xin; Li, Lubo
• Is Part Of: Food science & nutrition. Volume 8:Issue 11(2020)
• Page Start: 6153
• Page End: 6163
• Publication Date: 2020-10-12
• Subjects: di‐n‐butyl phthalate -- Leuconostoc mesenteroides -- removal mechanism; Food industry and trade -- Periodicals; Food -- Periodicals; Nutrition -- Periodicals; 664
• DOI: 10.1002/fsn3.1908
• Languages: English
• ISSNs: 2048-7177

Abstract

Abstract: Di‐n‐butyl phthalate (DBP) poses a risk to humans as a ubiquitous environmental contaminant. A strain of Leuconostoc mesenteroides DM12 was chosen from lactic acid bacteria strains to study the DBP binding mechanisms. Adsorption of DBP by strain DM12 reached the highest binding rate of 87% after 11 hr of incubation, which could be explained by pseudo‐second‐order kinetics. The adsorption isotherm coincided with the model of Langmuir–Freundlich, indicating physical and chemical adsorption processes involved. Further, NaIO4 and TCA treatments were used to analyze the DBP binding mechanism of strain DM12, which indicated that peptidoglycan on the bacterial cell wall was involved in the process. The O‐H, C‐O, and N‐H bonds were possibly involved in the binding process as the main functional groups. Abstract : The adsorption thermodynamics, kinetics and the binding sites of DBP by strain DM12.