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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhila N.O., Kalacheva G.S., Volova T.G.
Заглавие : Effect of salinity on the biochemical composition of the alga Botryococcus braunii Kutz IPPAS H-252
Место публикации : Journal of Applied Phycology. - 2011. - Vol. 23, Is. 1. - С. 47-52. - ISSN 09218971 (ISSN) , DOI 10.1007/s10811-010-9532-8
Ключевые слова (''Своб.индексиров.''): botryococcus--fatty acid composition--lipid content--salinity--algae--botryococcus--botryococcus braunii
Аннотация: The effect of 0.3 and 0.7 M NaCl on biomass yield, total nitrogen content, intracellular lipid content, and fatty acid profile of the lipids of the alga Botryococcus braunii IPPAS H-252 in different phases of the culture cycle was studied. The presence of sodium chloride in the medium inhibited the growth of algal cells for the first 3 days of the experiment, causing a decrease in total nitrogen, enhanced synthesis of triacylglycerols, and considerable changes in the lipid fatty acid profile: decreases in polyenoic acid contents (from 68.34% to 29.38% and 12.8%) and proportions of long-chain saturated acids (from 0.53% to 5.3% and 14.13% of the total fatty acids) at 0.3 M NaCl and 0.7 M NaCl, respectively. In later phases of the culture, at 0.3 M NaCl, the content of polyenoic acids rose to the values characteristic of the active growth phase of this alga. At 0.7 M NaCl, the proportion of polyenoic acids grew less significantly, but biomass concentration and total nitrogen increased, similarly to the experiment with 0.3 M NaCl. В© 2010 Springer Science+Business Media B.V.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhila N.O., Kalacheva G.S., Volova T.G.
Заглавие : Effect of nitrogen limitation on the growth and lipid composition of the green alga Botryococcus braunii Kutz IPPAS H-252
Место публикации : Russian Journal of Plant Physiology. - 2005. - Vol. 52, Is. 3. - С. 311-319. - ISSN 10214437 (ISSN) , DOI 10.1007/s11183-005-0047-0
Ключевые слова (''Своб.индексиров.''): botryococcus--lipids--nitrogen limitation--algae--botryococcus--botryococcus braunii--chlorophyta
Аннотация: The effect of nitrogen limitation in a medium on the composition of intracellular lipids in the alga Botryococcus braunii Kutz IPPAS H-252 in the course of culture development was investigated. Under the conditions of nitrogen limitation, the alga under investigation accumulated lipids as triacylglycerols, and this process was accompanied by substantial changes in the total fatty acid (FA) composition, which were manifested in a decrease in trienoic acids (from 52.8-57.2 to 19.5-24.7% of total FAs) and an increase in the content of oleic (from 1.1-1.2 to 17.1-24.4%) and saturated (from 23.7-26.0 to 32.9-46.1%) acids. In the control culture, the directionality of FA redistribution was less marked, and these changes were noticed at the later stages of culture development. Under nitrogen limitation, marked changes in the FA composition of polar lipids occurred by the 13th day, and they were characterized by an increase in the content of saturated acids (up to 76.8%) and a dramatic decrease in the content of all polyenoic acids (up to 6.8%). The changes in the FA composition of triacylglycerols were noticed as early as by the 7th day; these changes consisted in an increase in the content of oleic acid, and its high content (28.4-38.4%) was maintained up to the end of culturing. In the control culture, triacylglycerols with a high content of oleic acid were found by the 13th day, although, by this time, the content of total lipids and triacylglycerols did not change. В© 2005 MAIK "Nauka/Interperiodica".
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhila N.O., Kalacheva G.S., Volova T.G.
Заглавие : Influence of nitrogen deficiency on biochemical composition of the green alga Botryococcus
Место публикации : Journal of Applied Phycology. - 2005. - Vol. 17, Is. 4. - С. 309-315. - ISSN 09218971 (ISSN) , DOI 10.1007/s10811-005-7212-x
Ключевые слова (''Своб.индексиров.''): botryococcus--fatty acids--lipids--nitrogen deficiency--biochemical composition--green alga--algae--botryococcus--botryococcus braunii--chlorophyta
Аннотация: A study has been carried out to investigate the influence of nitrogen deficiency on intracellular lipid composition, including total fatty acid composition of lipids, polar lipids, and triacylglycerols, of the alga Botryococcus braunii Kutz IPPAS H-252 in batch culture. Under nitrogen limitation, the alga accumulates lipids as triacylglycerols and the total fatty acid (FA) composition changes: trienoic acids decrease (from 52.8-57.2 to 19.5-24.7% of the total FAs) and the oleic acid increases (from 1.1-1.2 to 17.1-24.4%) as does the saturated acids (from 23.7-26 to 32.9-46.1%). A similar rearrangement in the FA spectrum occurs at later times in the control culture, but it is less pronounced. Under nitrogen limitation, considerable changes in the polar lipid FAs are registered at day 13: saturated acids increase (from 28.6-35.5 to 76.8%) and all polyenoic acids markedly decrease (from 56.9-64.1 to 6.8%). Changes in the triacylglycerol fatty acid spectrum are seen on day 7: the oleic acid increases (from 14.7 to 34.2%) and remains at a high level till the end of the culture. In the control, triacylglycerols with large contents of oleic acid are detected at day 13, the total lipids and triacylglycerols still remaining unchanged. В© Springer 2005.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kalacheva G.S., Zhila N.O., Volova T.G.
Заглавие : Lipid and hydrocarbon compositions of a collection strain and a wild sample of the green microalga Botryococcus
Место публикации : Aquatic Ecology. - 2002. - Vol. 36, Is. 2. - С. 317-330. - ISSN 13862588 (ISSN) , DOI 10.1023/A:1015615618420
Ключевые слова (''Своб.индексиров.''): batch culture--botoryococcus braunii--fatty acids--hydrocarbons--lipids--chemical composition--fatty acid--green alga--hydrocarbon--lipid--saline lake--russian federation--algae--bacteria (microorganisms)--botryococcus--botryococcus braunii--chlorophyta
Аннотация: Lipid composition and hydrocarbon structure of two colonial green algae of the genus Botryococcus, i.e., a mu seum strain and a field sample collected for the first time from Lake Shira (Khakasia, Siberia), have been compared. Polar lipids, diacylglycerols, alcohols, triacylglycerols, sterols, sterol esters, free fatty acids and hydrocarbons have been identified among lipids in the laboratory culture. The dominant fraction in the museum strain was formed by polar lipids (up to 50% of the lipids) made up of fatty acids from C12 to C24. Palmitic, oleic, C16 - C18 dienoic and trienoic acids were the main fatty acids of the museum strain. Aliphatic hydrocarbons were found in the lipid of the museum strain. However, these amounted maximally to about 1% of the dry biomass at the end of exponential growth phase. The qualitative and quantitative compositions of FAs and hydrocarbons of the museum strain of Botryococcus, (registered at the Cambridge collection as Botryococcus braunii Kutz No LB 807/1 Droop 1950 H-252) differed from those of the Botryococcus strain described in the literature as Botryococcus braunii. The Botryococcus sp. found in Lake Shira is characterized by a higher lipid content (< 40% of the dry weight). Polar lipids, sterols, triacylglycerols, free fatty acids and hydrocarbons have been identified among lipids in the field sample. The main lipids in this sample were dienes and trienes (hydrocarbons < 60% of total lipid). Monounsaturated and very long chain monounsaturated fatty acids, including C28:1 and C32:1 acids, were identified in the Botryococcus found in Lake Shira. The chemo-taxonomic criteria allow us to unequivocally characterize the organism collected from Lake Shira as Botryococcus braunii race A.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kalacheva G.S., Zhila N.O., Volova T.G.
Заглавие : Lipids of the green alga Botryococcus cultured in a batch mode
Место публикации : Microbiology. - 2001. - Vol. 70, Is. 3. - С. 256-262. - ISSN 00262617 (ISSN)
Ключевые слова (''Своб.индексиров.''): batch culture--botryococcus braunii--fatty acids--lipids
Аннотация: The lipid fraction of the green alga Botryococcus cultured in a batch mode was found to contain polar lipids (more than 50% of the total lipids), di- and triacylglycerols, sterols and their esters, free fatty acids, and hydrocarbons. In aging culture, the content of polar lipids somewhat decreased and that of triacylglycerols increased by more than four times. The content of hydrocarbons in the algal biomass did not exceed 0.9% and depended little on the culture age. Intracellular lipids contained saturated and unsaturated (mono-, di-, and trienoic) fatty acids. The maximum content of C16:3 and ?-C18:3 fatty acids (up to 35% of the total fatty acids) was detected in the phase of active growth. The extracellular and intracellular lipids of the alga differed in the proportion of particular lipids and in the fatty acid pattern. В© 2001 MAIK "Nauka/Interperiodica".
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Yurchenko Y.A., Gladyshev M.I., Belevich O.E., Kalachova G.S., Kolmakova A.A.
Заглавие : Comparison of fatty acid contents and composition in major lipid classes of larvae and adults of mosquitoes (Diptera: Culicidae) from a steppe region
Место публикации : Insect Science. - 2013. - Vol. 20, Is. 5. - С. 585-600. - ISSN 16729609 (ISSN) , DOI 10.1111/j.1744-7917.2012.01582.x
Ключевые слова (''Своб.индексиров.''): amphibiotic insects--essential fatty acids--metamorphosis--mosquitoes--short-chain polyunsaturated fatty acids
Аннотация: Emerging aquatic insects, including mosquitoes, are known to transfer to terrestrial ecosystems specific essential biochemicals, such as polyunsaturated fatty acids (PUFA). We studied fatty acid (FA) composition and contents of dominant mosquito populations (Diptera: Culicidae), that is, Anopheles messeae, Ochlerotatus caspius, Oc. flavescens, Oc. euedes, Oc. subdiversus, Oc. cataphylla, and Aedes cinereus, inhabited a steppe wetland of a temperate climate zone to fill up the gap in their lipid knowledge. The polar lipid and triacylglycerol fractions of larvae and adults were compared. In most studied mosquito species, we first found and identified a number of short-chain PUFA, for example, prominent 14:2n-6 and 14:3n-3, which were not earlier documented in living organisms. These PUFA, although occurred in low levels in adult mosquitoes, can be potentially used as markers of mosquito biomass in terrestrial food webs. We hypothesize that these acids might be synthesized (or retroconverted) by the mosquitoes. Using FA trophic markers accumulated in triacylglycerols, trophic relations of the mosquitoes were accessed. The larval diet comprised green algae, cryptophytes, and dinoflagellates and provided the mosquitoes with essential n-3 PUFA, linolenic, and eicosapentaenoic acids. As a result, both larvae and adults of the studied mosquitoes had comparatively high content of the essential PUFA. Comparison of FA proportions in polar lipids versus storage lipids shown that during mosquito metamorphosis transfer of essential eicosapentaenoic and arachidonic acids from the reserve in storage lipids of larvae to functional polar lipids in adults occurred. В© 2012 Institute of Zoology, Chinese Academy of Sciences.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Makhutova O.N., Sushchik N.N., Kalacheva G.S.
Заглавие : The information value of fatty acid composition of triacylglycerols and polar lipids of seston in assaying the food spectrum of microzooplankton in the bugach reservoir.
Место публикации : Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections / translated from Russian. - 2004. - Vol. 395. - С. 143-145. - ISSN 00124966 (ISSN)
Ключевые слова (''Своб.индексиров.''): fatty acid--fresh water--lipid--triacylglycerol--article--bacterium--biomass--chemistry--cyanobacterium--diatom--ecosystem--metabolism--physiology--phytoplankton--russian federation--season--bacteria--biomass--cyanobacteria--diatoms--ecosystem--fatty acids--fresh water--lipids--phytoplankton--russia--seasons--triglycerides
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tolomeev A.P., Sushchik N.N., Gulati R.D., Makhutova O.N., Kalacheva G.S., Zotina T.A.
Заглавие : Feeding spectra of Arctodiaptomus salinus (Calanoida, Copepoda) using fatty acid trophic markers in seston food in two salt lakes in South Siberia (Khakasia, Russia)
Место публикации : Aquatic Ecology. - 2010. - Vol. 44, Is. 3. - С. 513-530. - ISSN 13862588 (ISSN) , DOI 10.1007/s10452-010-9331-y
Ключевые слова (''Своб.индексиров.''): arctodiaptomus salinus--brackish lakes--fatty acids--feeding spectra--salinity adaptation--adaptation--bacterium--brackish water--ciliate--comparative study--crustacean--cyanobacterium--fatty acid--feeding behavior--flagellate--food selection--green alga--lipid--physicochemical property--picoplankton--saline lake--salinity--seasonality--seston--khakassia--russian federation--siberia--animalia--arctodiaptomus salinus--bacillariophyta--bacteria (microorganisms)--calanoida--chlorophyta--ciliophora--copepoda--cryptomonas--cryptophyta--cyanobacteria--mastigophora (flagellates)--proteobacteria
Аннотация: During two vegetation seasons (2004-2005), we compared feeding spectra of Arctodiaptomus salinus (Calanoida, Copepoda) populations inhabiting two neighboring salt lakes, Shira and Shunet, Khakasia, Russia, using fatty acid (FA) trophic markers. Sestonic FA composition in two lakes moderately differed, whereas levels of diatom FA markers were higher in Lake Shunet and of Cyanobacteria and green algae markers in Lake Shira. In general, markers in storage lipids-triacylglycerols (TAG) of A. salinus-reflected the differences in sestonic composition of the two lakes. Nevertheless, TAG fraction was also enriched by FA trophic markers of the minor components of seston, which were selectively ingested by the animals. In Lake Shira, A. salinus had significantly higher concentrations of bacterial FA markers in TAG. In Lake Shunet, TAG of A. salinus contained significantly higher relative amounts of 18:4?3, 18:5?3 and C22 polyunsaturated fatty acids (PUFA), which indicated marked contribution of cryptophytes or (and) flagellates into the diet. Laboratory experiments showed feeding on Cryptomonas and sulfur purple bacteria in Lake Shunet and ciliates and colonial picoplankton in both lakes, and generally confirmed the differences in FA trophic markers in A. salinus between the lakes. The two populations of A. salinus markedly differed in levels of essential long-chain PUFA, eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids, although the levels of these FA in seston were quite similar between the two lakes. The higher levels of the essential ?3 PUFA in A. salinus in Lake Shunet may be an adaptive response of the animals to a vertical stratification of physico-chemical conditions and significantly higher salinity levels at the boundary of adjacent bottom layer in this lake. В© 2010 Springer Science+Business Media B.V.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kalacheva G.S., Zhila N.O., Volova T.G.
Заглавие : Lipids of the green alga Botryococcus cultured in a batch mode
Колич.характеристики :7 с
Место публикации : Microbiology: MAIK NAUKA/INTERPERIODICA, 2001. - Vol. 70, Is. 3. - P256-262. - ISSN 0026-2617, DOI 10.1023/A:1010438908047
Примечания : Cited References: 17
Предметные рубрики: BRAUNII
HYDROCARBON
METABOLISM
RACE
Ключевые слова (''Своб.индексиров.''): botryococcus braunii--batch culture--lipids--fatty acids
Аннотация: The lipid fraction of the green alga Botryococcus cultured in a batch mode was found to contain polar lipids (more than 50% of the total lipids), di- and triacylglycerols, sterols and their eaters, free fatty acids, and hydrocarbons. In aging culture, the content of polar lipids somewhat decreased and that of triacylglycerols increased by more than four times. The content of hydrocarbons in the algal biomass did not exceed 0.9% and depended little on the culture age. Intracellular lipids contained saturated and unsaturated (mono-, di-, and trienoic) fatty acids. The maximum content of C-16:3 and alpha -C-18 :3 fatty acids (up to 35% of the total fatty acids) was detected in the phase of active growth. The extracellular and intracellular lipids of the al,oa differed in the proportion of particular lipids and in the fatty acid pattern.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Gladyshev M.I., Moskvichova A.V., Makhutova O.N., Kalachova G.S.
Заглавие : Comparison of fatty acid composition in major lipid classes of the dominant benthic invertebrates of the Yenisei river
Колич.характеристики :12 с
Место публикации : Comp. Biochem. Physiol. B-Biochem. Mol. Biol.: ELSEVIER SCIENCE INC, 2003. - Vol. 134, Is. 1. - P111-122. - ISSN 1096-4959, DOI 10.1016/S1096-4959(02)00191-4
Примечания : Cited References: 30
Предметные рубрики: LAKE-ERKEN
BIOMARKERS
BACTERIA
MARKERS
DIET
FISH
N-3
Ключевые слова (''Своб.индексиров.''): fatty acids--triacylglycerols--polar lipids--gammarids--aquatic larvae of insects
Аннотация: The composition and content of fatty acids (FAs) in total lipids, triacylglycerols (TAG) and polar lipids (PL) in dominant groups of benthic invertebrates: gammarids (Gammaridae, Amphipoda), chironomid larvae (Chironomidae, Diptera), caddisfly larvae (Trichoptera) and mayfly larvae (Ephemeroptera) were studied in the Yenisei river. For the first time data on the FA composition of species belonging to Trichoptera (Insecta) are presented. The groups of aquatic insect larvae and gammarids weakly differed in total content of essential polyunsaturated fatty acids (PUFAs). Hence, the strong invasion of gammarids which occurred in the last decades in the Yenisei river should not result in a decrease in potential yield of essential PUFA in the ecosystem and corresponding decrease in food resource quality for fish in respect to PUFA content. Significant differences in biomarker FAs in TAG were found which correlated to specific food sources. Different levels of long-chain PUFA in PL of the invertebrates are discussed in relation to the genetic ability of particular taxa to form these FAs. (C) 2002 Elsevier Science Inc. All rights reserved.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik, Nadezhda N., Makhutova, Olesia N., Rudchenko, Anastasia E., Glushchenko, Larisa A., Shulepina, Svetlana P., Kolmakova, Anzhelika A., Gladyshev, Michail I.
Заглавие : Comparison of Fatty Acid Contents in Major Lipid Classes of Seven Salmonid Species from Siberian Arctic Lakes
Колич.характеристики :18 с
Коллективы : Russian Science FoundationRussian Science Foundation (RSF) [16-14-10001]
Место публикации : Biomolecules: MDPI, 2020. - Vol. 10, Is. 3. - Ст.419. - ISSN 2218-273X(eISSN), DOI 10.3390/biom10030419
Примечания : Cited References:60. - This research was funded by the Russian Science Foundation, grant number 16-14-10001.
Предметные рубрики: LONG-CHAIN
FISH
QUALITY
OMEGA-3
MARINE
WILD
TISSUE
FOOD
Аннотация: Long-chain omega-3 polyunsaturated fatty acids (LC-PUFA) essential for human nutrition are mostly obtained from wild-caught fish. To sustain the LC-PUFA supply from natural populations, one needs to know how environmental and intrinsic factors affect fish fatty acid (FA) profiles and contents. We studied seven Salmoniformes species from two arctic lakes. We aimed to estimate differences in the FA composition of total lipids and two major lipid classes, polar lipids (PL) and triacylglycerols (TAG), among the species and to evaluate LC-PUFA contents corresponding to PL and TAG in muscles. Fatty acid profiles of PL and TAG in all species were characterized by the prevalence of omega-3 LC-PUFA and C16-C18 monoenoic FA, respectively. Fish with similar feeding spectra were identified similarly in multivariate analyses of total lipids, TAG and PL, due to differences in levels of mostly the same FA. Thus, the suitability of both TAG and total lipids for the identification of the feeding spectra of fish was confirmed. All species had similar content of LC-PUFA esterified as PL, 1.9-3.5 mg g(-1), while the content of the TAG form strongly varied, from 0.9 to 9.8 mg g(-1). The LC-PUFA-rich fish species accumulated these valuable compounds predominately in the TAG form.
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