Reutilization of soybean by-product for biomass production of Bacillus amyloliquefaciens and evaluation of its antifungal potential against Fusarium

Main Article Content

Reutilization of soybean by-product for biomass production of Bacillus amyloliquefaciens and evaluation of its antifungal potential against Fusarium

Tác giả

Trần Thị Hà Trang
Ngô Văn Anh
Nguyễn Văn Bốn
Nguyễn Anh Dũng

Tóm tắt

Recently, Bacillus amyloliquefaciens has been recognized as a potential biocontrol agent for protecting crops against significant diseases. Thus, biomass production of this bacterium has received much interest. However, most previous studies have used commercial nutrient broth as a C/N source for fermentation. This study evaluated the potential reuse of various agricultural by-products, and soybean pulp by-product (SPBP) was identified as a suitable substrate for the fermentation of B. amyloliquefaciens EB.CK9. Experimental results showed that strain EB.CK9 grew best in a culture medium containing 1.75% SPBP, 0.05% MnSO4, and 0.1% KH₂PO₄, with an initial pH of 7. Cultivation was carried out at a temperature of 36°C, 200 rpm for 36 hours, and the biomass concentration reached up to 14.29 × 108 CFU/ml (shake flask condition). The production of B. amyloliquefaciens EB.CK9 in a bioreactor system resulted in a higher biomass concentration of 9.56 × 10¹¹ CFU/ml with a reduced fermentation time (10 hours). After fermentation in the bioreactor system, the antifungal activity of EB.CK9 biomass was evaluated and demonstrated promising antifungal potential against Fusarium incarnatum (56.25%), Fusarium solani (68.75%), and Fusarium oxysporum (67.50%). The study results highlight the potential for reusing agricultural by-products in the development of B. amyloliquefaciens EB.CK9-based products, open up opportunities for the development of indigenous bioproducts from endophytic bacteria, which can support the sustainable cultivation of durian.

Article Details

Chuyên mục
Khoa học Tự nhiên & Công nghệ
Tiểu sử của Tác giả

Trần Thị Hà Trang

Viện Công nghệ Sinh học và Môi trường, Trường Đại học Tây Nguyên

Ngô Văn Anh

Viện Công nghệ Sinh học và Môi trường, Trường Đại học Tây Nguyên;
Tác giả liên hệ: Ngô Văn Anh; ĐT: 0374559085; Email: nvanh@ttn.edu.vn.

Nguyễn Văn Bốn

Viện Công nghệ Sinh học và Môi trường, Trường Đại học Tây Nguyên

Nguyễn Anh Dũng

Viện Công nghệ Sinh học và Môi trường, Trường Đại học Tây Nguyên

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