Microbial Glycoprotein and Lipopeptide Biosurfactants: Production, Properties and Applications

2019 ◽  
pp. 106-128
Author(s):  
Ana Belén Moldes ◽  
Xanel Vecino ◽  
L. Rodríguez-López ◽  
M. Rincón-Fontán ◽  
José Manuel Cruz
Keyword(s):  
Lipopeptide Biosurfactants

scholarly journals Cyclic Lipopeptides with Herbicidal and Insecticidal Activities Produced by Bacillus clausii DTM1

2015 ◽  
Vol 10 (12) ◽  
pp. 1934578X1501001 ◽  
Author(s):  
Da-Le Guo ◽  
Bo Wan ◽  
Shi-Ji Xiao ◽  
Sarah Allen ◽  
Yu-Cheng Gu ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Natural Product ◽  
Fermentation Broth ◽  
Cyclic Lipopeptides ◽  
Bacillus Clausii ◽  
Cyclic Lipopeptide ◽  
Lipopeptide Biosurfactants ◽  
First Time ◽  
Insecticidal Activities

Seven cyclic lipopeptide biosurfactants (1–7) were isolated for the first time from the fermentation broth of endophytic Bacillus clausii DTM1 and were identified as anteisoC13[Val7] surfactin-(L-Glu)-O-methyl-ester (1), anteisoC12[Val7] surfactin (2), anteisoC15[Val7] surfactin (3), isoC14[Leu7] surfactin (4), anteisoC12[Leu7] surfactin (5), nC13[Leu7] surfactin (6), and anteisoC14[Leu7] surfactin-(L-Glu)-O-methyl-ester (7); 1 has not been isolated before as a natural product from any source. Plate-based herbicide and insecticide bioassays showed that all compounds exhibited interesting insecticidal and herbicidal activities.

Lipopeptide Biosurfactants From Bacillus Species

2019 ◽  
pp. 205-240 ◽  
Author(s):  
Mareen Geissler ◽  
Kambiz Morabbi Heravi ◽  
Marius Henkel ◽  
Rudolf Hausmann
Keyword(s):  
Bacillus Species ◽  
Lipopeptide Biosurfactants

Lipopeptide biosurfactants fromPaenibacillus polymyxainhibit single and mixed species biofilms

Biofouling ◽  
2012 ◽  
Vol 28 (10) ◽  
pp. 1151-1166 ◽  
Author(s):  
Gerry A. Quinn ◽  
Aaron P. Maloy ◽  
Stephen McClean ◽  
Brian Carney ◽  
John W. Slater
Keyword(s):  
Mixed Species ◽  
Lipopeptide Biosurfactants

scholarly journals Valorization of Date Syrup by the Production of Lipopeptide Biosurfactants by a Bacillus mojavensis BI2 strain: Bioprocess Optimization by Response Surface Methodology and Study of Surface Activities

2021 ◽  
Author(s):  
Mnif Inès ◽  
Amir Bouallegue ◽  
Salwa Mekki ◽  
Dhouha Ghribi
Keyword(s):  
Response Surface ◽  
Incubation Time ◽  
Culture Media ◽  
Biosurfactant Production ◽  
Scale Production ◽  
Surface Activities ◽  
Date Syrup ◽  
Lipopeptide Biosurfactants ◽  
Great Surface

Abstract Lipopeptides Biosurfactants are natural surface-active compounds produced by a variety of microorganisms. They have great interest in environmental, biomedical and agro-industrial fields. However, the high cost of culture media and the low yield of production limit their large-scale production and application. The development of efficient and cost-effective bioprocess became of a great interest for the improvement of the yield of biosurfactants and the decrease of production cost. In this aim, we applied the response surface method to optimize an economic biosurfactant production by a newly isolated strain B. mojavensis BI2 on date syrup called “Luegmi” as unique carbon and nitrogen source. Using a Box-Bhenken design, we studied the effect of three independent variables on lipopeptide production; Leugmi concentration, Na 2 HPO 4 and incubation time. The results of this study showed that Leugmi concentration at 25%, Na 2 HPO 4 at 0.1% and incubation time of 24 hours were optimal conditions for biosurfactant production, with a maximum surface tension decreasing capacity of 55% corresponding to 27 mN/m and oil dispersing of 30 cm 2 corresponding to a diameter of 6 cm. Preliminary characterization of the biosurfactant produced on Luegmi by UV-Spectra and Thin Layer Chromatography showed its lipopeptide characters. Physic-chemical characterization of the produced lipopepetide on Leugmi showed its great surface activities and stabilities at different pH, temperature and salts concentration. The results of this study suggested that Leugmi, an agricultural byproducts can be used as a low-cost substrate to enhance the yield of lipopeptide biosurfactants with great surface activities for potential environmental application.

scholarly journals Antimicrobial Activity of Lipopeptide Biosurfactants Against Foodborne Pathogen and Food Spoilage Microorganisms and Their Cytotoxicity

2021 ◽  
Vol 11 ◽  
Author(s):  
Konstantina Kourmentza ◽  
Xavier Gromada ◽  
Nicholas Michael ◽  
Charlotte Degraeve ◽  
Gaetan Vanier ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antifungal Activity ◽  
Foodborne Pathogen ◽  
Food Spoilage ◽  
Food Preservatives ◽  
Byssochlamys Fulva ◽  
Lipopeptide Biosurfactants ◽  
First Time ◽  
High Antifungal Activity ◽  
Spoilage Microorganisms

Lipopeptide biosurfactants produced by Bacillus sp. were assessed regarding their antimicrobial activity against foodborne pathogenic and food spoilage microorganisms. Both Gram-positive and Gram-negative bacteria were found not to be susceptible to these lipopeptides. However, mycosubtilin and mycosubtilin/surfactin mixtures were very active against the filamentous fungi Paecilomyces variotti and Byssochlamys fulva, with minimum inhibitory concentrations (MICs) of 1–16 mg/L. They were also active against Candida krusei, MIC = 16–64 mg/L. Moreover it was found that the antifungal activity of these lipopeptides was not affected by differences in isoform composition and/or purity. Furthermore their cytotoxicity tested on two different cell lines mimicking ingestion and detoxification was comparable to those of approved food preservatives such as nisin. Overall, for the first time here mycosubtilin and mycosubtilin/surfactin mixtures were found to have high antifungal activity against food relevant fungi at concentrations lower than their toxicity level hence, suggesting their application for extending the shelf-life of products susceptible to these moulds. In addition combining nisin with mycosubtilin or mycosubtiliin/surfactin mixtures proved to be an effective approach to produce antimicrobials with broader spectrum of action.

Sign in / Sign up

Export Citation Format

Share Document