Kinetic study and modeling of biosurfactant production using Bacillus sp.

Background: Surfactants are one of the most important raw materials used in various industrial fields as emulsifiers, corrosion inhibitors, foaming agents, detergent products, and so on. However, commercial surfactant production is costly, and its demand is steadily increasing. This study aimed to e...

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Main Authors: Hesty Heryani, Meilana Dharma Putra
Format: Article
Language:English
Published: Elsevier 2017-05-01
Series:Electronic Journal of Biotechnology
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0717345817300131
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author Hesty Heryani
Meilana Dharma Putra
author_facet Hesty Heryani
Meilana Dharma Putra
author_sort Hesty Heryani
collection DOAJ
description Background: Surfactants are one of the most important raw materials used in various industrial fields as emulsifiers, corrosion inhibitors, foaming agents, detergent products, and so on. However, commercial surfactant production is costly, and its demand is steadily increasing. This study aimed to evaluate the performance of typical strains of Bacillus sp. to produce biosurfactants through fermentation. It also included the investigation of the effect of initial glucose concentration and the carbon to nitrogen ratio. Results: The biosurfactant yield was in the range of 1–2.46 g/L at initial glucose concentrations of 10–70 g/L. The optimum fermentation condition was achieved at a carbon to nitrogen ratio of 12.4, with a decrease in surface tension of up to 27 mN/m. Conclusions: For further development and industrial applications, the modified Gompertz equation is proposed to predict the cell mass and biosurfactant production as a goodness of fit was obtained with this model. The modified Gompertz equation was also extended to enable the excellent prediction of the surface tension.
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spelling doaj.art-b9fd44e1d8ba4e7da114bdaa163f76522022-12-22T01:57:17ZengElsevierElectronic Journal of Biotechnology0717-34582017-05-0127C495410.1016/j.ejbt.2017.03.005Kinetic study and modeling of biosurfactant production using Bacillus sp.Hesty Heryani0Meilana Dharma Putra1Department of Agro-industrial Technology, Faculty of Agriculture, Lambung Mangkurat University, Banjarbaru, Kalimantan Selatan 70714, IndonesiaDepartment of Chemical Engineering, Faculty of Engineering, Lambung Mangkurat University, Banjarbaru, Kalimantan Selatan 70714, IndonesiaBackground: Surfactants are one of the most important raw materials used in various industrial fields as emulsifiers, corrosion inhibitors, foaming agents, detergent products, and so on. However, commercial surfactant production is costly, and its demand is steadily increasing. This study aimed to evaluate the performance of typical strains of Bacillus sp. to produce biosurfactants through fermentation. It also included the investigation of the effect of initial glucose concentration and the carbon to nitrogen ratio. Results: The biosurfactant yield was in the range of 1–2.46 g/L at initial glucose concentrations of 10–70 g/L. The optimum fermentation condition was achieved at a carbon to nitrogen ratio of 12.4, with a decrease in surface tension of up to 27 mN/m. Conclusions: For further development and industrial applications, the modified Gompertz equation is proposed to predict the cell mass and biosurfactant production as a goodness of fit was obtained with this model. The modified Gompertz equation was also extended to enable the excellent prediction of the surface tension.http://www.sciencedirect.com/science/article/pii/S0717345817300131Bacillus subtilisBiological surfactantsBiosurfactant productionC/N ratioCorrosion inhibitorsEmulsifiersFoaming agentGlucoseKinetic modelingOil recoverySurface tension reduction
spellingShingle Hesty Heryani
Meilana Dharma Putra
Kinetic study and modeling of biosurfactant production using Bacillus sp.
Electronic Journal of Biotechnology
Bacillus subtilis
Biological surfactants
Biosurfactant production
C/N ratio
Corrosion inhibitors
Emulsifiers
Foaming agent
Glucose
Kinetic modeling
Oil recovery
Surface tension reduction
title Kinetic study and modeling of biosurfactant production using Bacillus sp.
title_full Kinetic study and modeling of biosurfactant production using Bacillus sp.
title_fullStr Kinetic study and modeling of biosurfactant production using Bacillus sp.
title_full_unstemmed Kinetic study and modeling of biosurfactant production using Bacillus sp.
title_short Kinetic study and modeling of biosurfactant production using Bacillus sp.
title_sort kinetic study and modeling of biosurfactant production using bacillus sp
topic Bacillus subtilis
Biological surfactants
Biosurfactant production
C/N ratio
Corrosion inhibitors
Emulsifiers
Foaming agent
Glucose
Kinetic modeling
Oil recovery
Surface tension reduction
url http://www.sciencedirect.com/science/article/pii/S0717345817300131
work_keys_str_mv AT hestyheryani kineticstudyandmodelingofbiosurfactantproductionusingbacillussp
AT meilanadharmaputra kineticstudyandmodelingofbiosurfactantproductionusingbacillussp