Properties of Poly- γ-Glutamic Acid Producing-Bacillus Species Isolated From Ogi Liquor and Lemon-Ogi Liquor

Conclusion γPGA-producing Bacillus spp. were isolated during fermentation of OSL and LOSL at 0–12 h. These isolates exhibited antibacterial and ACE inhibitory activities at different concentrations. The individual antibacterial activities of γPGA were bacteriostatic while the combined use exhibited bactericidal characteristics. Although the ACE inhibitory activities were low, OSL and LOSL are promising sources for developing functional microorganisms with a beneficial impact on health. The importance lies in the benefits derived from the use of local resources. Author Contributions TA contributed to the conceptualization of the study, the screening of PGA-producing Bacillus from different OSL and LJOSL, the phenotypic identification, the stickiness, and performed the screening of PGA. TA contributed to the antibacterial and ACE inhibitory activities, time-kill kinetics of PGA, prepared the draft of the manuscript and performed the analysis of the data. SD performed the FTIR analysis of PGA, and the antibacterial activities of PGA. OI contributed to the conceptualization of the study and the compilation and the finalization of the manuscript. Funding This work was based on the research supported wholly by the National Research Foundation of South Africa (Grant No. 110792). Conflict of Interest Statement The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential ...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research

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