Effect of different concentrations of Zataria multiflora Boiss. essential oil, nisin, and temperature on time to detection of Bacillus cereus
Publish place: Fifth International Conference on Food Science, Organic Agriculture and Food Security
Publish Year: 1399
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
FSACONF05_058
تاریخ نمایه سازی: 13 دی 1399
Abstract:
Plant essential oils are known to exhibit antimicrobial activities. Unfortunately, addition of high concentrations of the esesntial oils may cause undesirable flavor in food products . Therefore, they are being used in combination with other natural antibacterial agents such as bacteriocins and some other treatments (e.g. low temperatures). In this study combined effects of three concentrations of Zataria multiflora Boiss. essential oil (ZMEO) (0, 0.03, and 0.06 %), three concentrations of nisin (0, 0.5, and 2.5 ʽg/ml) and three incubation temperatures (10, 25 and 35 °C) on time to detection (TTD) of Bacillus cereus were evaluated in Brain Heart Infusion broth during 43 days. The results of this study showed that TTD was significantly affected (p<0.01) by the different concentrations of ZMEO alone or in combination with nisin (p> 0.05). The temperature also had significant effects on TTD of B. cereus. In conclusion, the combination of ZMEO, nisin with low temperatures may be useful for inhibiting the growth of B. cereus in foods.
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Authors
Ali Misaghi
Department of Food Hygiene, Faculty of veterinary medicine, University of Tehran