Exploring newly isolated thermotolerant, halotolerant and antimicrobial resistant Bacillus subtilis ProNTL1 from tannery waste and its alkaline protease production.

Autor: Tarannum N; Leather Research Institute (LRI), Bangladesh Council of Scientific and Industrial Research (BCSIR), Savar, Dhaka, 1350, Bangladesh. tarannumpritha@gmail.com., Parveen S; Leather Research Institute (LRI), Bangladesh Council of Scientific and Industrial Research (BCSIR), Savar, Dhaka, 1350, Bangladesh., Bhuiyan MNI; Industrial Microbiology Laboratory, Institute of Food Science and Technology (IFST), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh., Chowdhury A; Food Microbiology Research Laboratory, Institute of Food Science and Technology (IFST), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh., Shahjadee UF; Food Enzymology Section, Institute of Food Science and Technology (IFST), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh., Sarker SS; Leather Research Institute (LRI), Bangladesh Council of Scientific and Industrial Research (BCSIR), Savar, Dhaka, 1350, Bangladesh., Akter T; Leather Research Institute (LRI), Bangladesh Council of Scientific and Industrial Research (BCSIR), Savar, Dhaka, 1350, Bangladesh., Hossain A; Food Enzymology Section, Institute of Food Science and Technology (IFST), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh., Alam MA; Leather Research Institute (LRI), Bangladesh Council of Scientific and Industrial Research (BCSIR), Savar, Dhaka, 1350, Bangladesh., Shaikh MAA; Department of Chemistry, University of Dhaka, Dhaka, 1000, Bangladesh. aftabshaikh@du.ac.bd.
Jazyk: angličtina
Zdroj: Molecular biology reports [Mol Biol Rep] 2024 Nov 08; Vol. 51 (1), pp. 1131. Date of Electronic Publication: 2024 Nov 08.
DOI: 10.1007/s11033-024-10000-1
Abstrakt: Background: A hydrolytic enzyme called protease from microbial sources has expansive applications in leather as well as tannery industries and thus leaves no choice but to discover a potential candidate for efficient yield of protease with eccentric characteristics.
Methods and Results: In the current study, using skim milk agar medium, three bacterial strains (Pro SS14, Pro NTL1, Pro SM) were identified for protease production out of thirty tannery waste samples. The bacterial isolates were identified through morphological, biochemical and molecular basis and the highest protease producer (134 U/mL) having the paramount protein content (8.75%) with the greatest biomass (absorbance 1.7 at 600 nm) was further bioinformatically identified as Bacillus subtilis Pro NTL1. Moreover, the cultural conditions-pH, temperature, incubation period and salinity were tested to get the optimized condition for the three isolates where Bacillus subtilis Pro NTL1 gave best growth at pH 9 demonstrating alkaline protease producing capability, at 45 °C for 72 h proving its thermotolerance characteristics and at 3% NaCl concentration declaring its halotolerance property. Furthermore, following Kirby-Bauer agar disc diffusion technique, the antimicrobial susceptibility pattern was investigated showing Bacillus subtilis Pro NTL1 was resistant to ampicillin, penicillin, sulfafurazole and sensitive to amoxicillin, gentamycin, cefotaxime, kanamycin, imipenem, tetracycline. Additionally, Bacillus subtilis Pro NTL1 showed antagonistic activity against three pathogens named Bacillus cereus, Bacillus megaterium and Escherichia coli.
Conclusions: Thus, these findings suggest that Bacillus subtilis Pro NTL1 is a newly isolated strain with unique features which might help to contribute in several biotechnological purposes with significant industrial benefits.
(© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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