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Abstract

Bacteriocin has been used widely in industry as a bio-preservative and an antimicrobial agent. The objective of the present study was to investigate the activity of bacteriocin produced by lactic acid bacteria (LAB) isolated from the fermented pinspotted spinefoot fish sauce of Hue as an antimicrobial of Vibrio infection in fish. The antimicrobial activity of bacteriocin against Vibrio alginiliticus YH18 and V.  fluvialis YH6 were carried out by agar well difusion method on MRS medium. Results of this study showed that bacteriocins produced by the bacterial isolate R3 indicated the highest bacteriocin activity against V.  fluvialis YH6 and V. alginiliticus YH18 at the diameter inhibition zone of 27,0 ± 2,2 mm and 20,0 ± 1,3 mm, respectively. While isolate R16 indicated the lowest diameter inhibition zone of 8,0 ± 1,2 mm with V. alginolyticus YH18. Results of this study showed that bacterial isolates R3, R4 and R16 have the potential to produce bacteriocins that inhibit the pathogen bacteria ­V. alginolyticus YH18 and V. fluvialis YH6. The bacterial isolates R3, R4 và R16 were indicated as Lactobacillus fermentum by MALDI-TOF MS identification method.

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How to Cite
Nguyen Thi Xuan Hong, Nguyen Thi Hue Linh, Nguyen Duc Quynh Anh, Do Thi Bich Thuy, Pham Thi Hai Yen, Nguyen Thi Dao, & Nguyen Nam Quang. (2025). Investigation of bacteriocin activity of lactic acid bacterial strains isolated from the fermented pinspotted spinefoot fish sauce of Hue. E-Journal of Agricultural Science and Technology, 9(1), 4663–4671. https://doi.org/10.46826/huaf-jasat.v9n1y2025.1192
Section
ANIMAL SCIENCE - VETERINARY MEDICINE - FISHERIES - ANIMALS

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