Optimization of fermentation processes requires monitoring the species composition of starter cultures and their growth during fermentation. Most starter cultures contain closely related species. Nowadays, high-resolution melting (HRM) analysis is extensively used for multiplex identification of closely related species. In the present paper, we applied real-time polymerase chain reaction (PCR) with HRM analysis for the detection and differentiation of Lactobacillus sakei and L. curvatus. A primer pair was selected for the site of the rpoA gene of Lactobacillus spp. Eleven starter cultures and fifteen fermented sausages with a known bacterial composition were successfully tested using real-time PCR with HRM analysis with the developed primer pair.

Ключевые слова: мета-данные, онко-риски, канцерогены. Аннотация Настоящий обзор посвящен формированию интегрированного научного базиса, основанном на данных различных ста-тистических публикаций (мета-данных), которые связывают с «онко-» рисками, ассоциированными с мясной про-дукцией. В октябре 2015 года Всемирная организация здравоохранения опубликовала отчет, в котором красное мясо назвали «вероятным канцерогеном для человека». Помимо этого, эксперты ВОЗ пришли к заключению о канцероген-ности переработанного мяса (подвергшегося обработке путем копчения, соления, ферментации и других процессов, продлевающих хранение). Однако в глобальном масштабе нет стандартизованного способа обзора огромного объема исследований механизмов, с помощью которых факторы образа жизни могут вызывать рак. Тем не менее, в насто-ящее время начата работа по разработке и тестированию новой методологии для проведения систематических обзоров механистических исследований, связанных с диетой, питанием, физической активностью, развитием и про-грессированием различных видов рака. Актуальность изучения исследований в данном направлении позволит сформировать базис мета-данных, связанный с «онко-» рисками, ассоциированными с мясной продукцией, определение основных и сопутствующих факторов воз-действия на онко-риски. Полученная информация позволит создать научный задел для проведения дальнейших работ по изучению влияния компонентов попадающих, либо образующихся в мясной продукции, ассоциированных с онко-рисками. Review paper FORMATION OF THE SCIENTIFIC BASIS OF META-DATA ASSOCIATED WITH ESTIMATES OF «ONCO-» RISKS LINKED TO MEAT PRODUCTSВострикова Abstract This review is devoted to formation of the integrated scientific foundation based on the data of different statistical publications (meta data) that are linked to «onko-« risks associated with meat products. In October 2015, World Health Organization (WHO) published a report, in which red meat was classified as probably carcinogenic to humans. In addition, the WHO experts made a conclusion about carcinogenicity of processed meat (meat that has been processed by smoking, salting, fermentation or other processes to extend storage). However, globally, there is no standardized method for reviewing the vast amount of studies on the mechanisms, by which lifestyle factors can cause cancer. At present, the work was begun on the development and testing of new methodology for performing systematic reviews of mechanistic investigations associated with a diet, nutrition, physical activity, and the development and progression of different types of cancer. A topical analysis of research in this direction will allow formation of basic meta data associated with «onko-» risks, linked to meat products, detection of basic and accompanying factors influencing «onko-» risks. The obtained information will enable the creation of a scientific reserve for further work on studying an effect of components entering into or developing in meat products associated with «onko-» risks. ОбзорДля цитирования: вострикова н.л., Кузн...

Peptidase family M9 (MEROPS database) is true collagenases and contains bacterial collagenases from Vibrio and Clostridium. One of the producers of M9A subfamily peptidase is Aeromonas salmonicida (locus - ASA_3723). The aim of the study was production of recombinant metallopeptidase Aeromonas salmonicida by transformation Pichia pastoris for further meat tenderization. Laboratory amounts of recombinant peptidase were obtained and test evaluation of enzyme activity was performed. Recombinant peptidase broke the peptide bond «Pro-Leu-Gly-Met-Trp-Ser-Arg» (one of the collagen chains, (Mw = 846.06)). The concentration of the substrate (peptide) after 180 min was 2 – fold decrease as compared with control. The maximum shear force of heat-treated samples had a 1.27 – fold decrease as compared with the control. As a result of histological studies of beef shank samples, the specific effect of the supernatant on the structure of connective tissue was established. Muscle fibers have not changed. The recombinant enzyme could be used for the meat tenderization.