Antagonistic Activity Against Pathogenic Vibrio Isolates of Bioflocculant-Producing Bacteria Isolated from Shrimp Ponds

Tuan, Le Cong; Thanh, Le Thi Ha; Huy, Nguyễn Đức; Trang, Dang Thi Thuy; Le, Bui Nguyen Nhat; Linh, Nguyen Le Nhat; Khánh, Nguyễn Văn; Huyen, T.N.B.T.; Lộc, Nguyễn Hoàng

doi:10.3923/pjbs.2021.1322.1332

Cited by 1 publication

(1 citation statement)

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“…Bioflocculants were widely used in wastewater treatment through their ability to aggregate suspended solids together and adsorb heavy metals without causing secondary pollution for the environment ( Liu et al, 2020 ; Vimala et al, 2020 ; Tsilo et al, 2022 ). Certain bioflocculant-producing bacteria possessed the antagonistic ability to pathogenic Vibrio species, which could be used to control Vibrio infection and apply as inoculum for bioflocculation simultaneously ( Tuan et al, 2021 ). Also, adding bioflocculant-producing bacteria into the aquaculture system could promote the formation of biofloc ( Luo et al, 2016 ; Kasan et al, 2017 ; Jiang et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Screening of bioflocculant and cellulase-producing bacteria strains for biofloc culture systems with fiber-rich carbon source

Chen²,

Xu³

et al. 2022

Front. Microbiol.

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The biofloc technology (BFT) system has been widely applied in the shrimp and fish culture industry for its advantages in water-saving, growth improvement, and water quality purification. However, The BFT system usually takes a long time to establish, and the extra carbon source input increases the maintenance cost of the system. In this study, we aimed to develop a low-cost and high-efficient BFT system for Litopenaeus vannamei by applying bacteria that could promote the formation of BFT and utilize cheap carbon sources. Three bioflocculant-producing bacteria strains (M13, M15, and M17) have been screened from a cellulolytic strain collection. All three strains have been identified as Bacillus spp. and can use sugarcane bagasse (SB) as a carbon source, which is a cheap byproduct of the sucrose industry in the tropic area of China. Compared to sucrose, the addition of SB and the three strains could improve the biofloc formation rate, biofloc size distribution, ammonia removal rate, and the growth performance of the shrimps. These results suggest that the bioflocculant and cellulase-producing bacteria strains could promote the biofloc formation and the growth of shrimps by using SB as an economic substitute carbon source in the BFT shrimp culture system.

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