نتایج جستجو برای: قارچ mortierella alpina

تعداد نتایج: 7933  

Journal: :Applied and environmental microbiology 2005
Seiki Takeno Eiji Sakuradani Akiko Tomi Misa Inohara-Ochiai Hiroshi Kawashima Toshihiko Ashikari Sakayu Shimizu

An oleaginous fungus, Mortierella alpina 1S-4, is used commercially for arachidonic acid production. Delta12-Desaturase, which desaturates oleic acid (18:1n-9) to linoleic acid (18:2n-6), is a key enzyme in the arachidonic acid biosynthetic pathway. To determine if RNA interference (RNAi) by double-stranded RNA occurs in M. alpina 1S-4, we silenced the Delta12-desaturase gene. The silenced stra...

2014
Ganesan Vadivelan Govindarajulu Venkateswaran

Mortierella sp. has been known to produce polyunsaturated fatty acids (PUFAs) such as GLA and AA under normal growth medium conditions. Similarly, under the stress condition, this fungus produces EPA and DHA in their mycelial biomass. Among the 67 soil samples screened from the Western Ghats of India, 11 Mortierella isolates showed the presence of omega-6 and omega-3 fatty acid, mainly GLA, AA,...

ژورنال: :علوم غذایی و تغذیه 0
سیده زینب اسدی دانش آموخته کارشناسی ارشد دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، گروه علوم و صنایع غذایی،تهران، ایران هوشنگ نیکوپور دانشیار دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، گروه علوم و صنایع غذایی،تهران، ایران کیانوش خسروی دارانی دانشیار دانشگاه علوم پزشکی و خدمات درمانی شهید بهشتی، انستیتو تحقیقات تغذیه ای و صنایع غذایی کشور، گروه تحقیقات صنایع غذایی، تهران، ایران حسین باخدا استادیار دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، گروه مکانیزاسیون کشاورزی، تهران، ایران

مقدمه: آراشیدونیک اسیداز اسیدهای چرب ضروری چند غیر اشباع می­باشد که نقش مهمی در سلامت انسان ایفا می­کند. گونه ­هایی از قارچ جنس mortierellaقادر به تولید گستره­ی وسیعی از اسیدهای چرب چند غیراشباع به ویژه آراشیدونیک اسید بوده و تحقیقات نشان داده­اند عوامل متعددی بر تولید آنها موثر می­باشند. امروزه تولید میکروبی آراشیدونیک اسید توسط قارچ­m. alpina با بکارگیری تخمیر حالت جامد مورد توجه قرار گرفته ا...

Arachidonic acid is an essential fatty acid in human nutrition. In the present study, production of arachidonicacid by Mortierella alpina CBS 754.68 was evaluated in submerged fermentation. The fermentation variableswere selected in accordance with the Plackett-Burman (PB) design and further optimized via response surface methodology (RSM). Five significant variables, namely glucose...

Journal: :Biocatalysis and Agricultural Biotechnology 2016

2011
Lei Wang Wei Chen Yun Feng Yan Ren Zhennan Gu Haiqin Chen Hongchao Wang Michael J. Thomas Baixi Zhang Isabelle M. Berquin Yang Li Jiansheng Wu Huanxin Zhang Yuanda Song Xiang Liu James S. Norris Suriguga Wang Peng Du Junguo Shen Na Wang Yanlin Yang Wei Wang Lu Feng Colin Ratledge Hao Zhang Yong Q. Chen

Mortierella alpina is an oleaginous fungus which can produce lipids accounting for up to 50% of its dry weight in the form of triacylglycerols. It is used commercially for the production of arachidonic acid. Using a combination of high throughput sequencing and lipid profiling, we have assembled the M. alpina genome, mapped its lipogenesis pathway and determined its major lipid species. The 38....

2017
Ganesan Vadivelan Pamidighantam Prabhakara Rao Govindarajulu Venkateswaran

Objectives of this study were designed for improved production of mycelial omega-3 fatty acids with particular reference to EPA and DHA from the oleaginous fungus Mortierella alpina CFR-GV15 under submerged low temperatures fermentation supplemented with linseed oil and garden cress oil as an additional energy source. The fungus was grown at 20°C temperature for four days initially followed by ...

2017
Roman J. Jędrzejczyk Katarzyna Turnau Przemysław J. Jodłowski Damian K. Chlebda Tomasz Łojewski Joanna Łojewska

A goal of our study was to find an alternative to nano-silver-based antimicrobial materials which would contain active silver immobilized in a solid matrix that prevents its migration into the surrounding environment. In this study, we investigated whether silver cations dispersed in an atomic form and trapped in an ion-exchanged zeolite show comparable antimicrobial activity to silver nanopart...

Journal: :Acta scientiarum polonorum. Technologia alimentaria 2015
Ganggang Cao Zhengbing Guan Feixian G Liu Xiangru Liao Yujie Cai

BACKGROUND Arachidonic acid (ARA) is one of the three essential fatty acids, and it is important for human body to keep healthy and is widely used. At present, expensive materials such as glucose and yeast extract are generally reported to be optimal for ARA production. A new cost-effective fermentation process including cheaper material for ARA production is of great significance. METHODS Fe...

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