Occurrence of non-toxic bioemulsifiers during polyhydroxyalkanoate production by Pseudomonas strains valorizing crude glycerol by-product

Kourmentza, Constantina; Araújo, Diana; Sevrin, Chantal; Roma-Rodriques, Catarina; Ferreira, Joana Lia; Freitas, Filomena; Dionı́sio, Madalena; Baptista, Pedro V.; Fernandes, Alexandra R.; Grandfils, Christian; Reis, Maria A.M.

doi:10.1016/j.biortech.2019.02.066

Cited by 23 publications

(7 citation statements)

References 45 publications

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“…Due to their amphiphilic nature, biosurfactants comprise at least one hydrophilic moiety, such as a carbohydrate, peptide, carboxyl group and one hydrophobic moiety, usually a fatty acid or a fat alcohol (Jauregi and Kourmentza, 2019;Kourmentza et al, 2019). Lipopeptide biosurfactants are cyclic structures that consist of hydrophilic peptide sequences, of usually 7 to 10 amino acids long, while their hydrophobic moiety comprises a C 13 -C 18 fatty acid chain.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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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.

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Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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“…In the field of microbial biosurfactant research a lot of researchers revert to the use of ‘extraction’ methods combined with gravimetrical determination of ‘purified’ samples of microbially produced surface‐active compounds. Such methods are widely applied for both glycolipid type biosurfactants and high molecular weight bioemulsifier type compounds (Kourmentza et al ., 2019; Naughton et al ., 2019; Roelants et al ., 2019). When performing biosurfactant purification via liquid‐phase extraction followed by evaporation of the solvent or by precipitation of the compounds from broth or supernatant the end point is often an oily, honey‐like product (Roelants et al ., 2016; Çakmak et al ., 2017).…”

Section: Process Development Towards the Scale‐up And Commercial Applmentioning

confidence: 99%

Microbial biosurfactant research: time to improve the rigour in the reporting of synthesis, functional characterization and process development

Twigg

Baccile

Banat

et al. 2020

Microbial Biotechnology

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The demand for microbially produced surface‐active compounds for use in industrial processes and products is increasing. As such there has been a comparable increase in the number of publications relating to the characterisation of novel surface‐active compounds; novel producers of already characterised surface‐active compounds and production processes for the generation of these compounds. We devised this review as a guide to both researchers and the peer review process to improve the stringency of future studies and publications within this field of science.

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“…An illustration of the general production process of PHA from glycerol or glycerine pitch (Kourmentza et al., 2019)…”

Section: Glycerine Pitch and Glycerol As Renewable Resourcesmentioning

confidence: 99%

“…Additionally, optimization with response surface methodology had produced 64 wt% of PHA from Burkholderia cepacia BPT1213 using waste glycerol (Zain et al., 2020). Most literature to date reporting substantial PHA conversion from glycerol had elucidated the use of super PHA producers, fermentation optimization, and innovative strategies (i.e., mixed cultures), thus implying the need for future research efforts towards parameter modification, novel technique advancement, and environmental isolation or genetic recombination (Heepkaew & Suwannasilp, 2020; Kourmentza et al., 2019; Li et al., 2020; Paula et al., 2019; Pereira et al., 2019). However, PHA yield is apparently varied even among bacterial strains despite being of the same species or genus, which signifies a comparable prominence to comprehensively understand and engineer the biosynthetic pathway ( Exhibit 6 ).…”

Section: Glycerine Pitch and Glycerol As Renewable Resourcesmentioning

confidence: 99%

Biotransformation of oleochemical industry by‐products to polyhydroxyalkanoate bioplastic using microbial fermentation: A review

Kakar

Amelia

Teng

et al. 2021

Environmental Quality Mgmt

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For many decades, global efforts have been attempted to replace the petrochemical plastics with biodegradable and environment friendly plastics. The petrochemical plastics that require many years to decompose have profound consequences on the environment. A natural, biodegradable, and plastic‐like polymer, polyhydroxyalkanoate (PHA), has been extracted from and synthesized by microbes, particularly bacteria. However, the prospective large‐scale production of PHA faced an economic bottleneck for less production costs. Research has thus shifted to one of the most common alternatives, which is the utilization of less costly raw materials or carbon sources that include industrial by‐products and wastes, such as glycerine pitch and glycerol. This review elucidates the discovery, basic mechanisms, and applications of PHA, as well as provides insights regarding the importance of PHA conversion from glycerine pitch and glycerol. This review also summarizes some possible future modifications to improve the efficiency of glycerine pitch and glycerol as carbon sources in PHA production. The conversion endeavors of wastes to a valuable product, PHA, that not only reduces petrochemical plastic pollution, waste generation, and PHA production costs but also supports economic and resource sustainability, which ultimately further progress towards the cradle‐to‐cradle design and circular bioeconomy concept.

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Occurrence of non-toxic bioemulsifiers during polyhydroxyalkanoate production by Pseudomonas strains valorizing crude glycerol by-product

Abstract: Occurrence of non-toxic bioemulsifiers during polyhydroxyalkanoate production by Pseudomonas strains valorizing crude glycerol by-product,

Cited by 23 publications

References 45 publications

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

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

Microbial biosurfactant research: time to improve the rigour in the reporting of synthesis, functional characterization and process development

Biotransformation of oleochemical industry by‐products to polyhydroxyalkanoate bioplastic using microbial fermentation: A review

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