检索结果-南通市图书馆

Chinese Journal of Oceanology and Limnology 2013年第6期31卷 1306-1314页

作者：李涛万凌琳李爱芬张成武 Institute of Hydrobiology Jinan University

Nitrogen deficiency is an effective strategy for enhancing lipid production in microalgae. Close relationships exist among lipid production, microalgal species, and nitrogen sources. We report growth, lipid accumulation, and fatty acid composition in four microalgae （Chloroeoccum ellipsoideum UTEX972, Chlorococcum nivale LB2225, Chlorococcum tatrense UTEX2227, and Scenedesmus deserticola JNU19） under nitrate- and urea-nitrogen deficiencies. We found three patterns of response to nitrogen deficiency： Type-A （decrease in biomass and increase in lipid content）, Type-B （reduction in both biomass and lipid content）, and Type-C （enhancement of both biomass and lipid content）. Type-C microalgae are potential candidates for large-scale oil production. Chlorococcum ellipsoideum, for example, exhibited a neutral lipid production of up to 239.6 mg/（L＇d） under urea-nitrogen deficiency. In addition, nitrogen deficiency showed only a slight influence on lipid fractions and fatty acid composition. Our study provides useful information for further screening hyper-lipid microalgal strains for biofuel production.

关键词： oleaginous microalgae nitrogen deficiency biomass total lipids fatty acid composition lipid classification

Factors aff ecting lipid and fatty acid composition of Calanus sinicus in the Yellow Sea and the East China Sea in spring

在线全文

学校读者我要写书评

暂无评论

Journal of Oceanology and Limnology 2022年第1期40卷 173-182页

作者： Yanqing WANG Zhencheng TAO Chaolun LI Mengtan LIU Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Ecology and Environmental Science Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Engineering and Technology Department Institute of OceanologyChinese Academy of SciencesQingdao 266071China Jiaozhou Bay National Marine Ecosystem Research Station Chinese Academy of SciencesQingdao 266071China Center of Deep Sea Research Institute of OceanologyChinese Academy of SciencesQingdao 266071China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China

The factors aff ecting lipid and fatty acid composition of copepod Calanus sinicus in the Yellow Sea(YS)and the East China Sea(ECS)were examined in this *** spring,there were signifi cant diff erences between these two regions for both environmental conditions and food *** regional diff erence signifi cantly infl uenced the lipid and fatty acid profi les of *** results show that *** has a higher lipids content in ECS,especially for wax ester and triglyceride lipids,indicating a more active and effi cient *** to BIO-ENV analysis,the variation of lipids profi les may be infl uenced majorly by water ***,the fatty acids(FAs)profi les of *** were also diff erent between YS and ECS,especially in the four major contributors,C22꞉1ω11,eicosapentaenoic acid(EPA),docosahexenoic acid(DHA),and C20꞉1ω*** considerable amounts of self-biosynthesized FAs of herbivorous copepod(C22꞉1ω11 and C20꞉1ω9)and low DHA/EPA ratio may indicate that *** in ECS feed mainly on phytoplankton comparing to those in *** fatty acid profi les of *** were aff ected by the diff erences in food availability.

关键词： Calanus sinicus lipid storage wax ester fatty acid composition Yellow Sea and East China Sea

The effects of season on fatty acid composition and ω3/ω6 ratios of northern pike(Esox lucius L.,1758) muscle lipids

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Oceanology and Limnology 2015年第1期33卷 70-76页

作者： MERT Ramazan BULUT Sait KONUK Muhsin Neveshir Haci Bektas Veli University Department of BiologyNevsehir 50300Turkey Akdeniz University Department of Science EducationAntalya 07058Turkey Uskiidar University Department of Molecular Biology and GeneticsIstanbul 34662Turkey

In the present study, the effects of season on fatty acid composition, total lipids, and ω3/ω6 ratios of northern pike muscle lipids in Klzlhrmak River （Klrlkkale, Turkey） were investigated. A total of 35 different fatty acids were determined in gas chromatography. Among these, palmitic, oleic, and palmitoleic acids had the highest proportion. The main polyunsaturated fatty acids （PUFAs） were found to be docosahexaenoic acid, eicosapentaenoic acid, and arachidonic acid. There were more PUFAs than monounsaturated fatty acids （MUFA） in all seasons. Similarly, the percentages of ω3 fatty acids were higher than those of total ω6 fatty acids in the fatty acid composition. ω3/ω6 ratios were calculated as 1.53, 1.32, 1.97, and 1.71 in spring, summer, autumn and winter, respectively. Overall, we found that the fatty acid composition and ω3/ω6 fatty acid ratio in the muscle of northern pike were significantly influenced by season.

关键词： freshwater fish fatty acid composition omega-3 PUFA lipid content season

A comparative analysis of fatty acid composition and fucoxanthin content in six Phaeodactylum tricornutum strains from diff erent origins

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Oceanology and Limnology 2016年第2期34卷 391-398页

作者：吴华莲李涛王广华戴世鲲何慧向文洲 Key Laboratory of Tropical Marine Bio - Resources and Ecology Guangdong Key Laboratory of Marine Materia Medica South China Sea Institute of Oceanology Chinese Academy of Sciences

Phaeodactylum tricornutum is a potential livestock for the combined production of eicosapentaenoic acid(EPA) and fucoxanthin. In this study, six marine diatom strains identified as P. tricornutum were cultured and their total lipid, fatty acid composition and major photosynthetic pigments determined. It was found that the cell dry weight concentration and mean growth rate ranged between 0.24–0.36 g/L and 0.31–0.33/d, respectively. Among the strains, SCSIO771 presented the highest total lipid content, followed by SCSIO828, and the prominent fatty acids in all strains were C16:0, C16:1, C18:1, and C20:5(EPA). Polyunsaturated fatty acids, including C16:2, C18:2, and EPA, comprised a significant proportion of the total fatty acids. EPA was markedly high in all strains, with the highest in SCSIO828 at 25.65% of total fatty acids. Fucoxanthin was the most abundant pigment in all strains, with the highest in SCSIO828 as well, at 5.50 mg/g. The collective results suggested that strain SCSIO828 could be considered a good candidate for the concurrent production of EPA and fucoxanthin.

关键词： Phaeodactylum tricornutum fatty acid composition polyunsaturated fatty acids eicosapentaenoic acid fucoxanthin

Comparison of fatty acid composition in total lipid of diapause and non-diapause larvae of Cydia pomonella （Lepidoptera： Tortricidae）

在线全文

学校读者我要写书评

暂无评论

Insect Science 2007年第2期14卷 125-131页

作者： ABBAS KHANI SAEID MOHARRAMIPOUR MOHSEN BARZEGAR HOSSEIN NADERI-MANESH Department of Entomology College of Agriculture Tarbiat Modares UniversityTarbiat Modares University Tehran Iran Department of Food Science and Technology College of Agriculture Tarbiat Modares University Tarbiat Modares University Tehran Iran Department of Biophysics College of Basic Sciences Tarbiat Modares University Tehran Iran

Seasonal changes in the fatty acid composition of the total lipid extracted from the whole body of Cydia pomonella L. larvae were determined by gas chromatography. The six most abundant fatty acids in both non-diapause and diapause larvae of codling moth were oleic （35%-39%）, palmitic （23%-33%）, linoleic （16%-30%）, palmitoleic （5%-10%）, stearic （1.5%-3.0%） and linolenic acids （1.0%-2.5%）. This represents a typical complement of Lepidopteran fatty acids. The fatty acid composition of total lipid of C. pomonella larvae was related to diapause. In similarity to most other reports, the proportion of unsaturated fatty acids increased in diapause initiation state. The total lipid of diapause larvae contained more linoleic acid （25.8% vs. 16.1%） and less palmitic acid （24.7% vs. 33.4%）, than that of non-diapause larvae. The weight percentage of linoleic acid （C 18：2） increased from 16% to 26% from early-August through early-September during transition to diapause, while palmitic acid （C16：0） decreased from 33% to 25% at the same time. These changes resulted in an increase in the ratio of unsaturated to saturated fatty acids （UFA/SFA） from 1.72 in non-diapause larvae to 2.63 in diapause larvae.

关键词： codling moth Cydia pomonella diapause fatty acid composition lipid

Effects of different dietary lipid sources on growth performance and tissue fatty acid composition of juvenile swimming crab Portunus trituberculatus

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Oceanology and Limnology 2015年第4期33卷 957-965页

作者：韩涛王骥腾胡水鑫李新宇姜宇栋王春琳 School of Marine Sciences Ningbo University School of Fishery Zhejiang Ocean University

This study was conducted to evaluate the effects of dietary lipid sources on the growth performance and fatty acid composition of the swimming crab, P ortunus trituberculatus. Four isonitrogenous and isoenergetic experimental diets were formulated to contain four separate lipid sources, including fish, soybean, rapeseed, and linseed oils(FO, SO, RO, and LO, respectively). With three replicates of 18 crabs each for each diet, crabs(initial body weight, 17.00 ±0.09 g) were fed twice daily for 8 weeks. There were no significant differences among these groups in terms of weight gain, specific growth rate, and hepatosomatic index. However, the RO groups' survival rate was significantly lower than FO groups. The feed conversion and protein efficiency ratios of RO groups were poorer than other groups. The proximate compositions of whole body and hepatopancreas were significantly affected by these dietary treatments. Tissue fatty acid composition mainly reflected dietary fatty acid compositions. Crabs fed FO diets exhibited significantly higher arachidonic, eicosapentaenoic, and docosahexaenoic acid contents in muscle and hepatopancreas compared with VO crabs. Linoleic, oleic, and linolenic acids in muscle and hepatopancreas were the highest in the SO, RO, and LO groups, respectively. The present study suggested that SO and LO could substitute for FO in fishmeal-based diets for swimming crabs, without affecting growth performance and survival.

关键词： swimming crab Portunus trituberculatus lipid source growth performance fatty acid composition

Maternal butyrate supplementation affects the lipid metabolism and fatty acid composition in the skeletal muscle of offspring piglets

在线全文

学校读者我要写书评

暂无评论

Animal Nutrition 2021年第4期7卷 959-966页

作者： Yongsen Zhao Danping Wang Yanping Huang Dangdang Wu Xiaoming Ji Xiaobing Zhou Dong Xia Xiaojing Yang Key Laboratory of Animal Physiology&Biochemistry Nanjing Agricultural UniversityNanjing210095China Jiangsu Meilin Animal Husbandry Co.Ltd. China Institute of Animal Husbandry&Veterinary Sciences Shanghai Academy of Agricultural SciencesShanghai201106China

Maternal sodium butyrate(SB)intake has important effects on offspring growth and *** study aimed to investigate the impacts of maternal SB supplementation during gestation and lactation on fatty acid composition and lipid metabolism in the offspring skeletal muscle of *** sows(Yorkshire,parity 2 to 3)were assigned to the control group(diets without SB,n=10)and SB group(diets with 0.1%SB,n=10).The results showed maternal SB supplementation throughout gestation and lactation increased(Pfatty acid(PUFA),n-6 PUFA and n-3 PUFA decreased(Pfatty acid composition of the skeletal muscle.

关键词： Maternal butyrate Intramuscular fat fatty acid composition Pig

Effects of dietary ratio of n-6 to n-3 polyunsaturated fatty acids on immunoglobulins, cytokines, fatty acid composition, and performance of lactating sows and suckling piglets

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2013年第2期4卷 137-144页

作者： Wei Yao Jie Li Jun jun Wang Weiliang Zhou Qingbo Wang Rongchang Zhu Fenglai Wang Phil Thacker Ministry of Agriculture Feed Industry Centre State Key Laboratory of Animal Nutrition China Agricultural University Tianjin National Breeding Pig Farm Ninghe Livestock & Fisheries Bureau Department of Science University of Saskatchewan

This experiment was conducted to investigate the effects of dietary ratios of n-6：n-3 polyunsaturated fatty acids （PUFA） on the performance of lactating sows and their piglets. Thirty pregnant Landrace sows were assigned to one of three treatments from d 108 of gestation until weaning （26-29 d） and were fed diets containing different ratios of n-6：n-3 PUFA including 3：1,9：1 and 13：1. The effects on sow and litter production traits were examined together with an assessment of sow body condition. No differences were detected among the treatments for the daily feed intake of sows or changes in sow weight and back-fat levels during lactation （P 〉 0.05）. Litter size at d 14 and d 21 were tended to increase in 3：1 treatment compared with 9：1 and 13：1 treatments （P 〈 0.10）. Litter weight gain （1.77 kg/d） from d 0 to d 14 was tended to increase in 9：1 groups compared with the other two treatments （P 〈 0.10）. A significant difference was observed for the content of a -linolenic acid, total n-3 PUFA, and the ratio of n-6：n-3 PUFA in the colostrum, milk, and piglets plasma （P 〈 0.01）. The effects of different ratios of n-6：n-3 PUFA in sow diets on colostrum, milk and piglet plasma immunoglobulin concentrations are studied. No difference was observed among treatments in the concentrations of IgM, and IgA in colostrum （P 〉 0.05）. A great significant difference for IgG concentration was observed among 3 group in colostrum. A great significant difference for IgA, and IgM （P〈 0.01） concentrations in piglet plasma at d14 and a significant difference for IgG（P 〈 0.05） was observed at d14. Furthermore, at d 21 of lactation, piglet plasma IgG and IgA concentration were greater in 3：1 compared with 13：1 group （P 〈 0.01）. In summary, the current study demonstrated that altering the ratio of n-6：n-3 PUFA in lactating sow diet had an effect on the immune component including immunoglobulin and cytokines, and it tended to increase the litter average daily gain and improve the immune status o

关键词： n-6:n-3 polyunsaturated fatty acids Performance fatty acid composition Immunoglobulin Cytokines

Effect of Lycopus lucidus *** on gut microflora and short chain fatty acid composition in Crj:CD-1 mice

在线全文

学校读者我要写书评

暂无评论

BIOCELL 2022年第9期46卷 2101-2109页

作者： EUN NA SUN YOUNG LIM Ocean Science and Technology School Korea Maritime&Ocean UniversityBusanKorea2 Division of Convergence on Marine ScienceKorea Maritime&Ocean UniversityBusanKorea

We investigated the diversity and composition of microflora in feces of Lycopus lucidus Turcz.-fed *** addition,we evaluated the production of major cytokines(Interleukin-6 and-10)which are related to inflammation and fatty acid composition of several tissues.16S ribosomal DNA sequencing-based microbiome taxonomic profiling analysis was performed utilizing the EzBioCloud data *** mice fed on *** showed a significantly reduced number of lactic acid bacteria and coliform in the feces compared with the control group(pfatty acid composition in the *** group had percentages of 4:0,6:0,8:0 and 10:0 in the intestine but those short chain fatty acids were not detected in the control *** results showed that *** supplementation influenced gut environment by decreasing harmful microflora and increased the percentages of several short fatty acids.

关键词： Lycopus lucidus Turcz fatty acid composition Intestinal microflora 16S rDNA sequencing Cytokines

Optimization of hot air drying process for tiger nut and analysis of fatty acid composition of tiger nut oil

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2021年第6期14卷 228-236页

作者： He Li Xiaoxiao Niu Jiajun Chai Changle Guo Yihao Sun Jianhua Li Chunying Li College of Mechanical&Electrical Engineering Henan Agricultural UniversityZhengzhou 450002China College of Food Science and Technology Henan Agricultural UniversityZhengzhou 450002China Xuchang City Branch of Henan Tobacco Company Xuchang 461000HenanChina

Hot air temperature,hot air humidity,and hot wind speed were selected as independent variables of quadratic orthogonal rotation combination test design through single factor *** time,energy consumption,chromatism value,luminosity value,hardness,rehydration ratio,and other indexes of the product were used as the response value of the *** surface methodology(RSM)was used to analyze the effects of independent variables on the quality of tiger nut(Cyperus esculentus L.),and the process parameters were combined and *** results show that the suitable technological conditions for hot air drying of tiger nut are as follows:hot air temperature of 63.15°C,hot air humidity of 44.92%,hot air wind speed of 2.48 m/*** these conditions,the product has the advantages of the short drying cycle,low energy consumption,good color and luster,low hardness and good rehydration *** fatty acid composition and content of tiger nut oil were determined by gas *** fatty acid composition and content of tiger nut oil were compared with those of soybean oil,olive oil,rapeseed oil and sesame oil,the results show that among the saturated fatty acids in tiger nut oil,palm oil had the highest content of 11.172%,which was between soybean oil and olive *** main composition of unsaturated fatty acids in tiger nut oil is oleic acid,with a content of 77.605%,which is 3.6 times higher than that of soybean oil,and even higher than that of olive oil.

关键词： process optimization tiger nut hot air drying fatty acid composition oil response surface method