Microbiological safety criteria for products from unconventional raw materials: raw bear fat

IF 1.3 Q4 FOOD SCIENCE & TECHNOLOGY Foods and Raw Materials Pub Date : 2023-04-04 DOI:10.21603/2308-4057-2023-2-582

E. Vechtomova, I. Dolgolyuk, Maria Orlova, A. Zaushintsena

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Abstract

Fat of game animals is a prospective raw material for bioactive additives. Before such a product enters the market, food science has to make sure it is safe for consumption. This research featured subcutaneous adipose tissue of brown bears tested with standard methods for microbiological safety indicators. The microbial properties were studied on liquid and solid nutrient media. Staphylococcus was profiled using a VITEK 2 Compact biochemical automatic analyzer and Gram-positive cards (Bio-Mérieux, France). The analysis followed the Technical Regulations of the Customs Union TR TS 021/2011 On Food Safety (December 09, 2011). The microbial count for mesophilic aerobic and facultative anaerobic microorganisms was 1.5×103 CFU/g. The fat samples revealed no molds, yeasts, or Escherichia coli bacteria. Liquid and solid nutrient media made it possible to describe the qualitative profile and cultural properties of the bear fat microflora against pork fat, which served as control. The automatic system identified Gram-positive, coagulase-negative, and oxidase-positive Staphylococcus lentus and Staphylococcus sciuri. In line with the modern classification, they belong to the new genus of Mammaliicoccus, namely Mammaliicoccus sciuri. Subcutaneous adipose tissue of brown bears needs to undergo a microbiological safety test before consumption. Bear fat requires additional research in order to become a safe raw material for food products and bioactive additives.

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非传统原料产品的微生物安全标准:生熊脂肪

野味动物脂肪是一种很有前景的生物活性添加剂原料。在这种产品进入市场之前，食品科学必须确保其食用安全。这项研究采用微生物安全指标的标准方法对棕熊的皮下脂肪组织进行了测试。对液体和固体营养培养基上的微生物特性进行了研究。使用VITEK 2 Compact生化自动分析仪和革兰氏阳性卡（Bio-Mérieux，法国）对葡萄球菌进行分析。分析遵循《关税同盟TR TS 021/2011食品安全技术条例》（2011年12月9日）。中温性好氧和兼性厌氧微生物的菌落总数为1.5×103CFU/g。脂肪样本中没有霉菌、酵母或大肠杆菌。液体和固体营养介质可以描述熊脂肪菌群相对于猪肉脂肪的定性特征和培养特性，作为对照。该自动系统对革兰氏阳性、凝固酶阴性、氧化酶阳性的长突葡萄球菌和sciuri葡萄球菌进行了鉴定。根据现代分类，它们属于哺乳动物科的新属，即Mammaliicoccus sciuri。棕熊的皮下脂肪组织在食用前需要进行微生物安全性测试。熊脂肪需要更多的研究才能成为食品和生物活性添加剂的安全原料。

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来源期刊

Foods and Raw Materials FOOD SCIENCE & TECHNOLOGY-

CiteScore

3.70

自引率

20.00%

发文量

审稿时长

24 weeks

期刊介绍： The journal «Foods and Raw Materials» is published from 2013. It is published in the English and German languages with periodicity of two volumes a year. The main concern of the journal «Foods and Raw Materials» is informing the scientific community on the works by the researchers from Russia and the CIS, strengthening the world position of the science they represent, showing the results of perspective scientific researches in the food industry and related branches. The main tasks of the Journal consist the publication of scientific research results and theoretical and experimental studies, carried out in the Russian and foreign organizations, as well as on the authors'' personal initiative; bringing together different categories of researchers, university and scientific intelligentsia; to create and maintain a common space of scientific communication, bridging the gap between the publications of regional, federal and international level.