Document Detail

Effects of Mentha longifolia L. Essential Oil and Nisin Alone and in Combination on Bacillus cereus and Bacillus subtilis in a Food Model and Bacterial Ultrastructural Changes.
MedLine Citation:
PMID:  21034248     Owner:  NLM     Status:  In-Data-Review    
Abstract In the face of emerging new pathogens and ever-growing health-conscious customers, food preservation technology remains on the top agenda of food industry. This study was aimed at determining the effects of the essential oil of Mentha longifolia L., alone and in combination with nisin, on Bacillus cereus and Bacillus subtilis at 8°C and 25°C in a food model (commercial barley soup) during 15 days. The essential oil alone at 8°C inhibited bacterial growth significantly compared with the control (p < 0.05). However, at 25°C, none of the concentrations of the essential oil alone showed inhibitory effect on bacterial growth. At 8°C, the combination effect of the essential oil and nisin on bacteria was noted at 0.25 μg mL(-1) for nisin and 0.05 μL mL(-1) for the essential oil (p < 0.05). The combination of nisin and the essential oil demonstrated significant inhibitory effects on the vegetative forms of bacteria at 25°C, although it was comparable to that of nisin alone at the same concentrations. Electron microscopy studies revealed a great deal of damage to B. cereus treated with a combination of nisin and the essential oil. However, the combination of nisin with the essential oil led to a complete destruction of cell wall and cytoplasm of vegetative cells of B. subtilis.
Mohamad Reza Pajohi; Hossein Tajik; Amir Abbas Farshid; Afshin Akhondzadeh Basti; Mojtaba Hadian
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Publication Detail:
Type:  Journal Article     Date:  2010-10-29
Journal Detail:
Title:  Foodborne pathogens and disease     Volume:  8     ISSN:  1556-7125     ISO Abbreviation:  Foodborne Pathog. Dis.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101120121     Medline TA:  Foodborne Pathog Dis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  283-90     Citation Subset:  IM    
1 Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University , Urmia, Iran .
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