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Document Type |
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Article In Journal |
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Document Title |
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The antimicrobial activity of cumin, thyme and anise extracts on some pathogenic and food spoilage bacteria أثير مستخلصات الكمون, الزعتر والينسون على نمو بعض سلالات البكتريا الممرضه والمسببه لفساد الأغذية |
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Document Language |
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English |
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Abstract |
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Abstract
The activity of plant extracts from Calotropis procera, Acacia nuliltica and Cassia senna has been investigated against some food borne pathogens (Escherichia coli, Salmonella typhimurium, Staphylococcus aureus subsp. aureus and Bacillus cereus) and food spoilage microorganisms (Bacillus cereus and Bacillus stearothermophilus) and towards larval mortality and development of Culex pipiens L.
Plant extracts (cold and hot aqueous extracts) exhibited variable antimicrobial activity. It was found that hot extract of C. senna has the strongest inhibition effect on Staphylococcus aureus subsp. aureus, Salmonella typhimurium and Bacellus. stearothermophilus when experimented by disc assay methods. Whereas, Calotropis procera showed very slight or no inhibition on the tested strains. Acacia nuliltica showed only complete inhibition of Staphylococcus aureus subsp. aureus, Salmonella typhimurium. The hot extract of C. senna and Acacia nuliltica were examined for their bactericidal activity by the use of kill curve method. It was found that hot extract of Cassia senna has bactericidal effect on Staphylococcus aureus subsp. aureus, Salmonella typhimurium and Bacellus. Stearothermophilus. Acacia nuliltica hot extract showed bactericidal effect on Staphylococcus aureus subsp. aureus, Salmonella typhimurium.
Plant extracts (acetonic extracts) exhibited variable biological activity. The greatest was observed for A. nuliltica which showed acute (2d) and chronic (10d) LC 50s of 212.1 and 144.2 ppm, respectively. Percentage of larval mortality was 93.33 % in the treatment with extracts of A. nuliltica and 82.8 % in C. senna. Egg hatchability was significantly reduced in A. nuliltica concentrations. All concentrations of the plant extracts from A. nuliltica, C. senna (200 ppm and above) and C. procera (400ppm and above) caused significantly high hindrance to the subsequent larval development and reduced both pupation and adult emergence. Drastic retardation of development was shown by A. nuliltica extracts, where only 20.3% and 10 % of the larval manged to reach pupal and adult stages, respectively, when reared in very low concentration (100 ppm) of the extract. However, C. senna and C. procera were more effective at higher concentrations. Application of such plant extracts to mosquito breeding sites may have great practical importance in relation to non-synthetic chemical control of these serious disease vectors. |
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ISSN |
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15 |
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Journal Name |
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J Food dairy Sci., Mansoura Univ. |
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Volume |
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1 |
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Issue Number |
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5 |
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Publishing Year |
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1431 AH
2010 AD |
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Article Type |
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Article |
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Added Date |
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Saturday, September 3, 2011 |
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Researchers
| محمد حسين مدكور | Madkour, Mohamed Hussein | Investigator | Doctorate | madkour55@yahoo.com |
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