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标题：Combining Celery Oleoresin, Limonene and Rhamnolipid as New Strategy to Control Endospore-Forming Bacillus cereus
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作者：Paula de Camargo Bertuso ; Débora M. Drappé Mayer ; Marcia Nitschke 等
期刊名称：Foods
电子版ISSN：2304-8158
出版年度：2021
卷号：10
期号：2
页码：455
DOI：10.3390/foods10020455
出版社：MDPI Publishing
摘要：Foodborne diseases (FBD) are a great problem worldwide, leading millions of people to seek medical help and to significant economic losses for industry. Among the agents implicated in FDB is Bacillus cereus, a Gram-positive, toxigenic and endospore-forming bacterium. In this study, rhamnolipid (RL) biosurfactant, celery oleoresin (OR) and limonene (LN) were evaluated as bio-based alternatives for controlling the growth of vegetative cells and endospores of B. cereus. To address their antimicrobial activity, the compounds were tested separately and in combination. Results demonstrate that, when combined with RL, both OR and LN have lower minimal inhibitory concentration (MIC) values and increased endospore inhibition potential. A percentage of endospore inhibition from 73% to 98%, corresponding to a 2.8–3.6 log reduction in spore outgrowth, was observed. RL inhibited B. cereus growth and endospore germination and potentially enhanced the antimicrobial efficacy of the natural hydrophobic compounds tested.
关键词：Bacillus cereus ; rhamnolipid; Apium graveolens ; oleoresin; limonene Bacillus cereus ; rhamnolipid ; Apium graveolens ; oleoresin ; limonene