Open AccessAdsorption kinetics and mechanism of di‐ n ‐butyl phthalate by Leuconostoc mesenteroides
Author(s) -
Zhao Lili,
Li Xinlei,
Yang Qingxiang,
Zhuang Di,
Pan Xin,
Li Lubo
Publication year - 2020
Publication title -
food science and nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 27
ISSN - 2048-7177
DOI - 10.1002/fsn3.1908
Subject(s) - leuconostoc mesenteroides , kinetics , chemistry , adsorption , phthalate , food science , mechanism (biology) , chromatography , organic chemistry , lactic acid , biology , philosophy , bacteria , physics , genetics , epistemology , quantum mechanics
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, NaIO 4 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.