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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rogozin D. Y., Zykov V. V., Tarnovskii M. O.
Заглавие : Dynamics of purple sulfur bacteria in a meromictic saline Lake Shunet (Khakassia, Siberia) in 2007–2013
Место публикации : Microbiology. - 2016. - Vol. 85, Is. 1. - С. 93-101. - ISSN 00262617 (ISSN) , DOI 10.1134/S0026261716010100
Ключевые слова (''Своб.индексиров.''): long-term dynamics--meromictic lake--purple sulfur bacteria--stratification
Аннотация: According to the results of seasonal monitoring, in 2007–2013 purple sulfur bacteria morphologically similar to Thiocapsa sp. Shira_1 (AJ633676 in EMBL/GenBank) predominated in the anoxygenic phototrophic community of the water column of the meromictic Lake Shira (Khakassia, Siberia). No pronounced seasonal periodicity in the total cell number in the water column was revealed during the period of observation. In some years cell number during the period when the lake was covered with ice was reliably higher than in summer. The absence of seasonal periodicity was probably due to the low amplitude of seasonal variations in temperature and illumination in the redox zone, resulting from its relatively deep location (12–16 m). The year-to-year dynamics was characterized by a reliable decrease of the total cell number in 2009–2010 and maxima in 2007 and 2011–2012. Canonical correlation analysis revealed that water temperature in the redox zone was the best predictor of the PSB abundance in Lake Shira. Water temperature, in turn, depended on the depth of mixing of the water column. Intense mixing in 2009–2011 was probably responsible for decreased PSB abundance in the lake. On the other hand, the absence of deep winter mixing, resulting in stable conditions in the chemocline, favored the preservation of relatively high PSB biomass. Prediction of circulation depth, which depends mainly on the weather conditions and dynamics of the water level, is required for prediction of PSB abundance in Lake Shira. These results may be useful for paleolimnological reconstructions of the history of the lake based on the remnants of purple sulfur bacteria in bottom sediments. © 2016, Pleiades Publishing, Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev, Michail I., Anishchenko, Olesia V., Makhutova, Olesia N., Kolmakova, Olesia V., Trusova, Maria Y., Morgun, Vasiliy N., Gribovskaya, Iliada V., Sushchik, Nadezhda N.
Заглавие : The benefit-risk analysis of omega-3 polyunsaturated fatty acids and heavy metals in seven smoked fish species from Siberia
Колич.характеристики :9 с
Коллективы : Russian Science FoundationRussian Science Foundation (RSF) [16-14-10001]
Место публикации : J. Food Compos. Anal.: ACADEMIC PRESS INC ELSEVIER SCIENCE, 2020. - Vol. 90: 12th International Food Data Conference (IFDC) (OCT 11-13, 2017, Buenos Aires, ARGENTINA). - Ст.103489. - ISSN 0889-1575, DOI 10.1016/j.jfca.2020.103489. - ISSN 1096-0481(eISSN)
Примечания : Cited References:66. - The work was supported by the Russian Science Foundation grant (No. 16-14-10001).
Предметные рубрики: FRESH-WATER
COMMERCIAL FISH
MUSCLE-TISSUE
COREGONUS
MERCURY
Аннотация: In cold smoked species of genus Coregonus, identified by molecular genetic analysis, contents of fatty acids and heavy metals and arsenic were measured. The highest content of sum of long-chain polyunsaturated fatty acids of omega-3 family (LC-PUFA), namely eicosapentaenoic (EPA) and docosahexaenoic (DHA) fatty acids, 6.53 +/- 0.78 mg g(-1) wet weight, was characteristic of tugun Coregonus tugun. This is the first quantitative estimation (mg LC-PUFA per g of product) of the nutritive value of smoked fish. Thus, to obtain a daily personal doze of EPA + DHA of 1 g, recommended for prevention of cardiovascular diseases, one needs to consume 153 g of the smoked tugun. Metals contents did not exceed standards for fish meat except Pb in least cisco Coregonus sardinella. Accordingly, values of hazard quotients, which estimate benefit-risk ratio of fish intake, indicate that most of the smoked fish species are safe product for human nutrition, except least cisco regarding Pb content.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M. I., Anishchenko O. V., Makhutova O. N., Kolmakova O. V., Trusova M. Y., Morgun V. N., Gribovskaya I. V., Sushchik N. N.
Заглавие : The benefit-risk analysis of omega-3 polyunsaturated fatty acids and heavy metals in seven smoked fish species from Siberia
Место публикации : J. Food Compos. Anal.: Academic Press Inc., 2020. - Vol. 90. - Ст.103489. - ISSN 08891575 (ISSN), DOI 10.1016/j.jfca.2020.103489
Аннотация: In cold smoked species of genus Coregonus, identified by molecular genetic analysis, contents of fatty acids and heavy metals and arsenic were measured. The highest content of sum of long-chain polyunsaturated fatty acids of omega-3 family (LC-PUFA), namely eicosapentaenoic (EPA) and docosahexaenoic (DHA) fatty acids, 6.53 ± 0.78 mg g?1 wet weight, was characteristic of tugun Coregonus tugun. This is the first quantitative estimation (mg LC-PUFA per g of product) of the nutritive value of smoked fish. Thus, to obtain a daily personal doze of EPA + DHA of 1 g, recommended for prevention of cardiovascular diseases, one needs to consume 153 g of the smoked tugun. Metals contents did not exceed standards for fish meat except Pb in least cisco Coregonus sardinella. Accordingly, values of hazard quotients, which estimate benefit-risk ratio of fish intake, indicate that most of the smoked fish species are safe product for human nutrition, except least cisco regarding Pb content. © 2020 Elsevier Inc.
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