Effect of Bacteriocin Treatment on Storage and Quality of Postharvest Strawberry Fruit

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In order to explore the effects of bacteriocin treatment on storage and quality of postharvest strawberry fruit, the inhibitory effects of a bacteriocin, produced by Lactobacillus plantarum, against rhizopus on infected strawberry fruits, was evaluated. Meanwhile, corruption rate, total soluble solids (TSS), total titratable acidity (TA) and vitamin C content were analyzed comparing between bacteriocin LF-1 and nisin treatment. The results show that the bacteriocin LF-1 has a significant inhibitory effect against spore germination of rhizopus. The average spore germinations of rhizopus was only 15.5% when treating with bacteriocin LF-1 at volume percentage of 20%. Freshly harvested strawberries were placed in room temperature and aspersed with bacteriocin LF-1 and nisin for 6 days. In particular, corruption rate, TSS, TA and vitamin C content were respectively 40%, 4.0mg/100g, 60.3% and 63.0mg/100g with bacteriocin LF-1 treating. These data suggest that bacteriocin LF-1 significantly reduced fruit decay and maintained overall quality, thereby extended the shelf-life of the strawberries.

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Advanced Materials Research (Volumes 554-556)

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1547-1552

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July 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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