Screening of lactic acid bacteria for their capacity to bind cypermethrin in vitro and the binding characteristics and its application. (15th June 2021)

• Record Type: Journal Article
• Authors: Zhang, Mengmei; Ming, Yue; Guo, Hualin; Zhu, Yuanting; Yang, Yong; Chen, Shujuan; He, Li; Ao, Xiaolin; Liu, Aiping; Zhou, Kang; Zou, Likou; Liu, Shuliang
• Is Part Of: Food chemistry. Volume 347(2021)
• Publication Date: 2021-06-15
• Subjects: Cypermethrin -- Lactic acid bacteria -- Biosorption -- Gastrointestinal tract; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2021.129000
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Lactic acid bacteria strains were first screened for their capacity to remove cypermethrin. The desorption of cypermethrin was related to the types of wash solution. Other pyrethroid and their metabolite 3-phenoxybenzoic acid also could be bound by LAB. Inactivated cells could remove over 60% of cypermethrin from fruit and vegetable juices. Abstract: In this study, the cypermethrin binding characteristics of lactic acid bacteria were investigated for the first time. Two strains, Lactobacillus plantarum RS60 and Pediococcus acidilactici D15, possessed the highest cypermethrin removal capacity and good tolerance to simulated digestive juices. They were employed for further studies on cypermethrin binding characteristics. 55.06% and 56.46% of cypermethrin were removed within 0.25 h by strains RS60 and D15, respectively. The effect of pH on binding capacity was negligible. Heat treatment enhanced cypermethrin binding rate. Moreover, inactive cells were capable of removing cypermethrin from fruit and vegetable juices, with over 60% cypermethrin reduction within 2 h. No adverse effect was found on the quality of juice during the biosorption process. Besides, these two strains also could bind other several pyrethroids and 3-phenoxybenzoic acid. These findings indicated that L. plantarum RS60 and P. acidilactici D15 may be useful to reduce cypermethrin in contaminated foods.