Bioconversion of low-cost brewery waste to biosurfactant: An improvement of surfactin production by culture medium optimization

Nazareth, Talita Corrêa; Zanutto, Conrado Planas; Maass, Danielle; Souza, Antônio Augusto Ulson de

doi:10.1016/j.bej.2021.108058

Cited by 17 publications

(3 citation statements)

References 49 publications

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“…B. subtilis YRE207 at the same agitation (150 rpm) on a mineral medium with sucrose as carbon and NH 4 NO 3 as nitrogen source had a maximal ST reduction with 26.1 mN/m at 3 C:N ratio 29 . B. subtilis ATCC 6051 strain had a maximal ST reduction from 52 to 27 mN/m with an enhanced production of surfactin by supplementation of yeast extract 30 . Joshi et al investigated 14 different carbon sources for biosurfactant production with B. subtilis 20B.…”

Section: Resultsmentioning

confidence: 99%

“…29 B. subtilis ATCC 6051 strain had a maximal ST reduction from 52 to 27 mN/m with an enhanced production of surfactin by supplementation of yeast extract. 30 Joshi et al investigated 14 different carbon sources for biosurfactant production with B. subtilis 20B. Sugars, alcohols, and hydrocarbons enhanced cell growth and biosurfactant production by using them as a carbon source, but cottonseed oil inhibited biosurfactant production.…”

Section: Media Optimizationmentioning

confidence: 99%

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Prediction of surfactin fermentation with Bacillus subtilis DSM10 by response surface methodology optimized artificial neural network

Czinkóczky

Sakiyo

Eszterbauer

et al. 2023

Cell Biochemistry & Function

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Biosurfactants produced by Bacillus species are an emerging group of surface-active molecules. They have excellent surface tension reducer and high emulsifier properties.Generally, the biosurfactant fermentation leads to a low product concentration. Therefore, our goal was to investigate Bacillus subtilis DSM10 production and improve the biosurfactant content in the broth by media optimization via response surface methodology. The optimal combinations of the investigated factors were determined as the following: pH = 9, glucose = 20 g/L, and NH 4 NO 3 = 2 g/L. Under the optimized conditions, the formed surfactin strain reduced surface tension in the broth by 48% (from 72 to 37 mN/m) and the isolated product by 63% (from 72 to 27 mN/m). An artificial neural network was built based on the results of response surface methodology to predict the product quality and the harvesting time of broth. Thus, finally, the model can predict the final cell and product amount, and even their time course, with around 90% reliability.

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Section: Resultsmentioning

confidence: 99%

Section: Media Optimizationmentioning

confidence: 99%

Prediction of surfactin fermentation with Bacillus subtilis DSM10 by response surface methodology optimized artificial neural network

Czinkóczky

Sakiyo

Eszterbauer

et al. 2023

Cell Biochemistry & Function

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show abstract

“…21 Nazareth et al have demonstrated the effect of metal supplementation on the medium, where the volumetric productivity of the medium without (M-I) and metal (M-II) increased from 2.98h to 7.43 mg/L h, respectively. About 210.11 mg/L surfactin is obtained in batch culture using M-II medium after 28 h, which is higher than the maximum surfactin concentration (121.80 mg/L) in M-I medium after 52 h. 22 Similar studies shed light on using wastes such as clarified cashew apple juice as a substrate to provide the needed nutrients for microbial-producing surfactin. 23 Other report provides a method of semisolid state fermentation for producing surfactin from a mutant strain of B. subtilis, greatly increasing its output.…”

Section: Introductionmentioning

confidence: 86%

Fermentation optimization of surfactin production of Bacillus amyloliquefaciens HM618

Liu

Tang

Cheng

2022

Biotech and App Biochem

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This work isolated a strain named Bacillus amyloliquefaciens HM618 from the soil, which can inhibit the growths of Botrytis cinerea, Rhizoctonia solani, and Escherichia coli DH5α. Based on the results of response surface methodology, the surfactin levels of strain HM618 were elevated from 0.724 to 1.876 g/L and 0.995 to 1.888 g/L under the pure culture with the optimized medium (containing 62.39 g/L sucrose, 15.06 g/L yeast extracts, and 3.27 g/L aspartate) and under the coculture of strains HM618 and Bacillus subtilis 168 with the optimized medium (containing 50.52 g/L sucrose, 19.76 g/L yeast extracts, and 1.02 g/L glutamate), respectively. Additionally, influences of nonconstitutive amino acids involved in the biosynthesis of surfactin were also explored. The highest surfactin level reached 2.04 g/L after adding 3.0 g/L exogenous ornithine. However, the surfactin production of strain HM618 was significantly inhibited after adding the mixtures of nonconstitutive amino acids.

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An Overview of Developments and Challenges in the Production of Biosurfactant by Fermentation Processes

Barbosa

Castro-Alonso

Rocha

et al. 2023

Biosurfactants and Sustainability

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Bioconversion of low-cost brewery waste to biosurfactant: An improvement of surfactin production by culture medium optimization

Cited by 17 publications

References 49 publications

Prediction of surfactin fermentation with Bacillus subtilis DSM10 by response surface methodology optimized artificial neural network

Prediction of surfactin fermentation with Bacillus subtilis DSM10 by response surface methodology optimized artificial neural network

Fermentation optimization of surfactin production of Bacillus amyloliquefaciens HM618

An Overview of Developments and Challenges in the Production of Biosurfactant by Fermentation Processes

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