The variability of times to detect growth from individualClostridium botulinumtype E endospores is differentially affected by high pressure treatments

Autor:	Juliane Schnabel, Rudi F. Vogel, Christian A. Lenz
Rok vydání:	2014
Předmět:	Clostridium botulinum type E Chemistry Germination Potential risk High pressure Treatment intensity Hydrostatic pressure Food science Condensed Matter Physics Endospore Spore
Zdroj:	High Pressure Research. 34:412-418
ISSN:	1477-2299 0895-7959
DOI:	10.1080/08957959.2014.975699
Popis:	High pressure thermal (HPT) processing is a candidate technology for the production of safe and stable food. However, little is known about the effect of HPT or high hydrostatic pressure (HHP) treatments at ambient temperature on the variability of times to detect growth from individual spores. We investigated this effect by treating Clostridium botulinum type E spores with HHP (200–600 MPa, 20°C) and HPT (600 MPa, 80°C and 800 MPa, 60°C). Our results indicate that the mean detection times increase and the frequency distribution shifts toward longer times when HHP treatment intensity is increased. HPT treatments result in a highly scattered distribution. In contrast, pressure levels ≤300 MPa decrease detection times and heterogeneity of their distribution, which could lead to an increase in the potential risk originating from C. botulinum type E spores. Data provided here could help to refine risk assessment regarding this important food intoxicator.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ce18a92bfe624e7f20e28155c458e705 https://doi.org/10.1080/08957959.2014.975699 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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