ISOLATION AND IDENTIFICATION OF BIOSURFACTANT-PRODUCING STRAINS FROM THE GENUS BACILLUS CEREUS AND ANTIBACTERIAL EFFECTS OF BIOSURFACTANT PRODUCTION IN VITRO

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MOSTAFAPOUR RAMI M.J.; AHMADY ASBCHIN S.

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Journal: Journal of Arak University Medical Sciences Year:2014 | Volume:16 | Issue:12 (81) Page(s): 0-0

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Title

ISOLATION AND IDENTIFICATION OF BIOSURFACTANT-PRODUCING STRAINS FROM THE GENUS BACILLUS CEREUS AND ANTIBACTERIAL EFFECTS OF BIOSURFACTANT PRODUCTION IN VITRO

Author(s)

MOSTAFAPOUR RAMI M.J. | AHMADY ASBCHIN S. | Issue Writer Certificate

Keywords

ANTIBACTERIAL ACTIVITYQ2

BIOSURFACTANTQ2

BACILLUS CEREUSQ2

SURFACE TENSIONQ2

Abstract

Background: BIOSURFACTANTs are amphiphilic biological compounds produced extracellularly by a variety of microorganisms. Because their use in various industries is of a particular importance, the aim of this study was to identify a strain of bacteria of the genus BACILLUS CEREUS BIOSURFACTANT producers and investigate the antibacterial effects of their BIOSURFACTANTs.Material & Methods: To do the study, different samples of oil, water, and soil (contaminated with oil) were obtained. Measures of hemolytic activities, emulsification and SURFACE TENSION were used and selected strains were identified by biochemical tests. The nature and antibacterial effect of BIOSURFACTANTs produced by selected strains were assessed.Results: In this study, 88 bacterial strains were isolated of which 24 strains had hemolytic activities, 14 strains had above 70% emulsification activities, and four strains were able to change the SURFACE TENSION to less than 40 mN/m. According to biochemical tests, a strain called B. cereus 43 was identified. Investigation of its BIOSURFACTANT nature showed that the strain was a lipopeptide type. Also, the produced BIOSURFACTANT had ANTIBACTERIAL ACTIVITY against six infectious bacteria. The most sensitive and the most resistant bacteria to the BIOSURFACTANT were S. Aureus PTCC1112 and Proteus Mirabilis ATCC 2601 respectively. Also, the results of MIC and MBC showed that in a dilution of 63 mg /ml MIC extract were mostly effective on S. Aureus PTCC1112 and S.Epidermidis ATCC2405, and in a dilution of 125mg/ml the MBC extract had the greatest effects on S. Aureus, S. Epidermidis, and Pseudomonas Aeruginosa PTCC1074.Conclusion: As findings showed, BACILLUS CEREUS 43 is of high potential in reducing the SURFACE TENSION and its extracted BIOSURFACTANT had high antibacterial effects. Therefore, this strain is of useful applications in biotechnology and the environmental sciences.

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APA: Copy

MOSTAFAPOUR RAMI, M.J., & AHMADY ASBCHIN, S.. (2014). ISOLATION AND IDENTIFICATION OF BIOSURFACTANT-PRODUCING STRAINS FROM THE GENUS BACILLUS CEREUS AND ANTIBACTERIAL EFFECTS OF BIOSURFACTANT PRODUCTION IN VITRO. ARAK MEDICAL UNIVERSITY JOURNAL (AMUJ), 16(12 (81)), 0-0. SID. https://sid.ir/paper/392912/en

Vancouver: Copy

MOSTAFAPOUR RAMI M.J., AHMADY ASBCHIN S.. ISOLATION AND IDENTIFICATION OF BIOSURFACTANT-PRODUCING STRAINS FROM THE GENUS BACILLUS CEREUS AND ANTIBACTERIAL EFFECTS OF BIOSURFACTANT PRODUCTION IN VITRO. ARAK MEDICAL UNIVERSITY JOURNAL (AMUJ)[Internet]. 2014;16(12 (81)):0-0. Available from: https://sid.ir/paper/392912/en

IEEE: Copy

M.J. MOSTAFAPOUR RAMI, and S. AHMADY ASBCHIN, “ISOLATION AND IDENTIFICATION OF BIOSURFACTANT-PRODUCING STRAINS FROM THE GENUS BACILLUS CEREUS AND ANTIBACTERIAL EFFECTS OF BIOSURFACTANT PRODUCTION IN VITRO,” ARAK MEDICAL UNIVERSITY JOURNAL (AMUJ), vol. 16, no. 12 (81), pp. 0–0, 2014, [Online]. Available: https://sid.ir/paper/392912/en

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