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首页> 外文期刊>Journal of food protection >Clostridium sporogenes PA 3679 and Its Uses in the Derivation of Thermal Processing Schedules for Low-Acid Shelf-Stable Foods and as a Research Model for Proteolytic Clostridium botulinum
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Clostridium sporogenes PA 3679 and Its Uses in the Derivation of Thermal Processing Schedules for Low-Acid Shelf-Stable Foods and as a Research Model for Proteolytic Clostridium botulinum

机译：产孢梭状芽胞杆菌PA 3679及其在低酸货架稳定食品的热处理程序推导中的用途以及作为蛋白水解肉毒梭菌的研究模型

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摘要

The putrefactive anaerobe Clostridium sporogenes PA 3679 has been widely used as a nontoxigenic surrogate for proteolytic Clostridium botulinum in the validation of thermal processes for low-acid shelf-stable foods, as a target organism in the derivation of thermal processes that reduce the risk of spoilage of such foods to an acceptable level, and as a research model for proteolytic strains of C. botulinum. Despite the importance of this organism, our knowledge of it has remained fragmented. In this article we draw together the literature associated with PA 3679 and discuss the identity of this organism, the phylogenetic relationships that exist between PA 3679 and various strains of C. sporogenes and proteolytic C. botulinum, the heat resistance characteristics of PA 3679, the advantages and limitations associated with its use in the derivation of thermal processing schedules, and the knowledge gaps and opportunities that exist with regard to its use as a research model for proteolytic C. botulinum. Phylogenetic analysis reviewed here suggests that PA 3679 is more closely related to various strains of proteolytic C. botulinum than to selected strains, including the type strain, of C. sporogenes. Even though PA 3679 is demonstrably nontoxigenic, the genetic basis of this nontoxigenic status remains to be elucidated, and the genetic sequence of this microorganism appears to be the key knowledge gap remaining to be filled. Our comprehensive review of comparative heat resistance data gathered for PA 3679 and proteolytic strains of C. botulinum over the past 100 years supports the practice of using PA 3679 as a (typically fail-safe) thermal processing surrogate for proteolytic C. botulinum.
机译：腐败的厌氧产气荚膜梭状芽胞杆菌PA 3679已被广泛用作蛋白水解肉毒梭菌的无毒替代品，用于验证低酸耐久食品的热过程，作为降低热变质风险的目标生物这类食物的含量达到可接受的水平，并成为肉毒梭菌蛋白水解菌株的研究模型。尽管这种生物很重要，但我们对其知识的了解仍然零散。在本文中，我们汇总了与PA 3679相关的文献，并讨论了该生物的身份，PA 3679与各种孢子囊梭菌和蛋白水解肉毒梭菌之间存在的系统发育关系，PA 3679的耐热性，其在热处理时间表的推导中使用的优势和局限性，以及在将其用作蛋白水解肉毒杆菌的研究模型时存在的知识空白和机会。在这里进行的系统发育分析表明，PA 3679与各种蛋白水解肉毒梭菌菌株之间的关系要比与孢子囊原菌的选定菌株（包括类型菌株）更紧密相关。尽管PA 3679具有非毒性，但这种非毒性状态的遗传基础仍有待阐明，该微生物的遗传序列似乎是有待填补的关键知识空白。我们对过去100年收集的针对PA 3679和肉毒梭菌蛋白水解菌株的耐热性比较数据的综合综述，支持将PA 3679用作蛋白水解肉毒杆菌的（典型的故障安全）热处理替代方法。

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  • 来源
    《Journal of food protection》 |2012年第4期|p.779-792|共14页
  • 作者

    JANELLE L. BROWN; NAI TRAN-DINH; BELINDA CHAPMAN;

  • 作者单位

    CSIRO Food and Nutritional Sciences, P.O. Box 52, North Ryde, New South Wales 1670, Australia;

    CSIRO Food and Nutritional Sciences, P.O. Box 52, North Ryde, New South Wales 1670, Australia;

    CSIRO Food and Nutritional Sciences, P.O. Box 52, North Ryde, New South Wales 1670, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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