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Article

Comparison of Microbiological and Probiotic Characteristics of Lactobacilli Isolates from Dairy Food Products and Animal Rumen Contents

1
Department of Wine, Food and Molecular Biosciences, Lincoln University, Lincoln 7647, New Zealand
2
Department of Agriculture, Lincoln University, Lincoln 7647, New Zealand
*
Author to whom correspondence should be addressed.
Academic Editor: Giuseppe Comi
Microorganisms 2015, 3(2), 198-212; https://doi.org/10.3390/microorganisms3020198
Received: 9 March 2015 / Revised: 23 March 2015 / Accepted: 25 March 2015 / Published: 15 April 2015
(This article belongs to the Special Issue Microbial Activity in Food)
Lactobacilli are employed in probiotic food preparations and as feed additives in poultry and livestock, due to health benefits associated with their consumption. The objective of this study was to evaluate and compare the probiotic potential of ten lactobacilli strains isolated from commercial dairy food products and animal rumen contents in New Zealand. Genetic identification of the isolates revealed that all belonged to the genus Lactobacillus, specifically the species L. reuteri, L. rhamnosus and L. plantarum. All isolates did not show any haemolytic behaviour. Isolates of dairy origin showed better tolerance to low pH stress. On the other hand, rumen isolates exhibited a higher tolerance to presence of bile salts. All isolates exhibited resistance to aminoglycoside antibiotics, however most were sensitive to ampicillin. Isolates of rumen origin demonstrated a higher inhibitory effect on Listeria monocytogenes, Enterobacter aerogenes and Salmonella menston. Bacterial adherence of all isolates increased with a decrease in pH. This screening study on lactobacilli isolates has assessed and identified potential probiotic candidates for further evaluation. View Full-Text
Keywords: lactobacilli; dairy food; animal rumen; screening; comparing in vitro characteristics lactobacilli; dairy food; animal rumen; screening; comparing in vitro characteristics
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MDPI and ACS Style

Jose, N.M.; Bunt, C.R.; Hussain, M.A. Comparison of Microbiological and Probiotic Characteristics of Lactobacilli Isolates from Dairy Food Products and Animal Rumen Contents. Microorganisms 2015, 3, 198-212. https://doi.org/10.3390/microorganisms3020198

AMA Style

Jose NM, Bunt CR, Hussain MA. Comparison of Microbiological and Probiotic Characteristics of Lactobacilli Isolates from Dairy Food Products and Animal Rumen Contents. Microorganisms. 2015; 3(2):198-212. https://doi.org/10.3390/microorganisms3020198

Chicago/Turabian Style

Jose, Neethu M., Craig R. Bunt, and Malik A. Hussain 2015. "Comparison of Microbiological and Probiotic Characteristics of Lactobacilli Isolates from Dairy Food Products and Animal Rumen Contents" Microorganisms 3, no. 2: 198-212. https://doi.org/10.3390/microorganisms3020198

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