Acinetobacter soli SP2 Capable of High-Efficiency Degradation of Food Emulsifier Polysorbate 80

Current Microbiology
Ngoc Tuan Nguyen

Abstract

Emulsifiers like polysorbate family, carboxymethyl cellulose are widely used in the preparation of drugs, vaccines, food, cosmetics, and skin care products. In this study, strain SP2 is isolated for the high-efficiency utilization of emulsifier as its sole carbon and energy source. Strain grows on the polysorbate family with generation time ranging from 0.8 to 2.2 h. It is sensitive to ampicillin, gentamicin, imipenem, penicillin, and vancomycin, but resistant to amikacin, cefoxitin, erythromycin, kanamycin, nalidixic acid, and tetracycline. Based on 16S rRNA gene, strain is identified as Acinetobacter soli. Compared to M. pamicella, which is capable of degrading 50% polysorbate 80 within 3 days, isolate PS2 could dispose 51.6% polysorbate 80 within only 8 h. Using cell crude extract from strain SP2, the liberation of free fatty acid in the reaction mixture containing polysorbate 80 suggests that the mechanism for polysorbate utilization belongs to the β-oxidation.

References

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Datasets Mentioned

BETA
MF784443

Methods Mentioned

BETA
electron microscopy
PCR
Assay
protein assay

Software Mentioned

Clustal X
BLAST

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