Paper Information

Journal:   JOURNAL OF MAZANDARAN UNIVERSITY OF MEDICAL SCIENCES   OCTOBER-NOVEMBER 2007 , Volume 17 , Number 60; Page(s) 112 To 115.
 
Paper: 

THE STUDY OF EFFECT BACTERIOCIN PRODUCING LACTOCO CCUS LACTIS ON LISTERIA MONOCYTOGENES AND BACILLUS CEREUS

 
 
Author(s):  MIRHOSSEINI MAHBOUBEH*, NAHVI I., KERMANSHAHI R.K., TAVASOLI MANOUCHEHR
 
* FACULTY OF MEDICINE, ISFAHAN UNIVERSITY OF MEDICAL SCIENCES, ISFAHAN, IRAN
 
Abstract: 

Background and purpose: Dairy products often associated with problems such as short shelf life and poor hygiene control. A novel approach is to utilize bacteriocin or bacteriocin producer strains, to control undesirable micro flora as Listeria monocytogenes and Bacillus cereus in foods. Hence, we studied the effect of nisin like producing Lactococcus lactis against Listeria monocytogenes and Bacillus cereus, in order to compare the isolated strain within different countries.
Materials and Methods: In this research we studied the effect of nisin like producing Lactococcus lactis, with producer spot test method. We also used supernatant from 24 h culture of Lactoccus lactis. Moreover, we studied the effect of bacteriocin on Listeria monocytogenes and Bacillus cereus growth curves.

Results: The growth of both strains was inhibited by the bacteriocin.
Conclusion: According to our results, the bacteriocin could be used in liquid food with bacteriocin added directly or as a starter culture in fermentation. This would inhibit the growth of Listeria monocytogenes; furthermore, Bacillus cereus is used to reduce food poisoning for fermented food products.

 
Keyword(s): BACTERIOCIN, LACTOCOCCUS LACTIS, LISTERIA MONOCYTOGENES AND BACILLUS CEREUS
 
References: 
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