Journals / Türk Biyokimya Dergisi / 2018 / Cilt: 43 - Sayı: 3

Strain improvement of newly isolated Lactobacillus acidophilus MS1 for enhanced bacteriocin production

Geliştirilmiş bakteriyosin üretimi için yeni izole edilen Lactobacillus acidophilus MS1’in suşunun iyileştirilmesi

Pages
323–332
Publication Date
2022-11-05
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It was foundto be thermally stable at 100°C for 30 min and maintainedthe stability up to 121°C.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Background: Lactic acid bacteria (LAB) are considered asGRAS (generally recognized as safe) and being used extensivelyas bio-preservatives.
📊
Key Findings & Data:Bacteriocins, the metabolitesof LAB, belong to a diverse family of naturally synthesizedantimicrobial peptides.Objective: Strain improvement for enhanced bacteriocinproduction by physical and chemical mutagenesis.Methods: The bacterial strain was identified by 16S rDNAsequence analysis and improved by ultraviolet and ethidiumbromide mutation.
💡
Conclusion & Impact:It was foundto be thermally stable at 100°C for 30 min and maintainedthe stability up to 121°C.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Background: Lactic acid bacteria (LAB) are considered asGRAS (generally recognized as safe) and being used extensivelyas bio-preservatives. Bacteriocins, the metabolitesof LAB, belong to a diverse family of naturally synthesizedantimicrobial peptides.Objective: Strain improvement for enhanced bacteriocinproduction by physical and chemical mutagenesis.Methods: The bacterial strain was identified by 16S rDNAsequence analysis and improved by ultraviolet and ethidiumbromide mutation. The resultant bacteriocin wasbiochemically characterized, purified and analyzed formass determination.Results: Among mutants of identified Lactobacillus acidophilusMS1, the UV6 (ultraviolet mutant) revealed 3400AU bacteriocin activity with 42% survival rate and EB5(ethidium bromide mutant) exhibited 4020 AU with 28%survival rate. Bacteriocin of 6.5 kDa was purified by cationexchange and gel exclusion chromatography. It was foundto be thermally stable at 100°C for 30 min and maintainedthe stability up to 121°C. The activity was monitored in awide range of pH (4–9).Conclusion: Being resistant to several biochemical parameters,the bacteriocins have an effective incorporationin food, forage and pharmacy. There is a need to engagemore efforts to explore novel bacteriocins and multifariousapplications.

Özet

Giriş ve amaç: Laktik asit bakterileri GRAS (genellikle güvenli) olarak kabul edilir ve biyo-koruyucular olarak yaygın olarak kullanılmaktadır. Bakteriyosinler, laktik asit bakterilerinin metabolitleri, doğal olarak sentezlenmiş antimikrobiyal peptit ailesine aittir. Amacımız fiziksel ve kimyasal mutajenez ile bakteriyosin üretimi arttırmış yeni suşlar üretmektir. Yöntem ve gereçler: Bakteri türü 16S rDNA sekans analizi ile tanımlandı; ultraviyole ve etidyum bromür mutasyonu ile geliştirildi. Ortaya çıkan bakteriyosin, biyokimyasal olarak karakterize edildi, saflaştırıldı ve kütle tayini için analiz edildi. Bulgular: Tespit edilen Lactobacillus acidophilus MS1 mutantları arasında UV6 (ultraviyole mutant) % 42 canlılık oranı ile 3400 AU bakteriyosin aktivitesi ve EB5 (etidyum bromür mutantı), % 28 canlılık oranı ile 4020 ve jel dışlama kromatografisi ile saflaştırıldı. 30 dakika süreyle 100°C’de termal olarak kararlı olduğu bulundu ve 121°C’ye kadar stabilite muhafaza edildi. Etkinlik geniş bir pH aralığında (4–9) izlendi. Tartişma ve sonuç: Birkaç biyokimyasal parametreye karşı dirençli olan bakteriyosinler gıda, yem ve eczacılıkta etkin bir şekilde kullanılmaktadır. Yeni bakteriyosinler ve çok yönlü uygulamaları keşfetmek için daha fazla çaba harcamaya ihtiyaç vardır.

🔖

Cite This Article

SHAHID, M., BUKHARI, S. A., SALMAN, M., SAHAR, T., NAHEED, S. (2022). Strain improvement of newly isolated Lactobacillus acidophilus MS1 for enhanced bacteriocin production. Türk Biyokimya Dergisi, Cilt: 43 - Sayı: 3, 323–332. https://ajindex.com/articles/620988

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (15)

  1. Waters DM, Mauch A, Coffey A, Arendt EK, Zannini E. Lactic acid bacteria as a cell factory for the delivery of functional biomolecules and ingredients in cereal-based beverages: a review. Crit Rev Food Sci Nutr 2015;55:503–20
  2. Salman M, Shahid M, Jamil A, Rahman SU. Effect of Lactobacillus acidophilus bacteriocin on Bacillus cereus biofilms. JPAM 2014;8:3721–8
  3. Huang R, Tao X, Wan C, Li S, Xu H, Xu F, et al. In vitro probiotic characteristics of Lactobacillus plantarum ZDY 2013 and its modulatory effect on gut microbiota of mice. J Dairy Sci 2015;98:5850–61
  4. Cencic A, Chingwaru W. The role of functional foods, nutraceuticals, and food supplements in intestinal health. Nutrients 2010;2:611–25
  5. Balciunas EM, Martinez FA, Todorov SD, de Melo Franco BD, Converti A, de Souza Oliveira RP. Novel biotechnological applications of bacteriocins: a review. Food Control 2013;32:134–42
  6. Martinez RR, Wachsman M, Torres NI, Blanc JG, Todorov SD, Gombossy de Melo Franco BD. Biochemical, antimicrobial and molecular characterization of a noncytotoxic bacteriocin produced by Lactobacillus plantarum ST71KS. Food Microbiol 2013;34:376–81
  7. Prudêncio CV, dos Santos MT, Vanetti MC. Strategies for the use of bacteriocins in Gram-negative bacteria: relevance in food microbiology. J Food Sci Technol 2015;52:5408–17
  8. Dobson A, Crispie F, Rea MC, O’Sullivan O, Casey PG, Lawlor PG, et al. Fate and efficacy of lacticin 3147-producing Lactococcus lactis in the mammalian gastrointestinal tract. FEMS Microbiol Ecol 2011;76:602–14
  9. Riley MA, Chavan MA. Bacteriocins. Heidelberg, Berlin: Springer-Verlag, 2007
  10. Mozzi F, Vignolo GM. Biotechnology of lactic acid bacteria: novel applications. USA: John Wiley & Sons, 2010
  11. Gratia JP. Andre Gratia: a forerunner in microbial and viral genetics. Genetics 2000;156:471–6
  12. Drider D, Fimland G, Héchard Y, McMullen LM, Prévost H. The continuing story of class IIa bacteriocins. Microbiol Mol Biol R 2006;70:564–82
  13. Bierbaum G, Sahl HG. Lantibiotics: mode of action, biosynthesis and bioengineering. Curr Pharm Biotechnol 2009;10:2–18
  14. Deraz SF, Karlsson EN, Hedström M, Andersson MM, Mattiasson B. Purification and characterization of acidocin D20079, a bacteriocin produced by Lactobacillus acidophilus DSM 20079. J Bacteriol 2005;117:343–54
  15. Pringsulaka O, Thongngam N, Suwannasai N, Atthakor W, Pothivejkul K, Rangsiruji A. Partial characterisation of bacteriocins produced by lactic acid bacteria isolated from Th