نتایج جستجو برای: lecithin organogels

تعداد نتایج: 3682  

Journal: :poultry science journal 2015
khosravinia h chethen ps umakantha b nourmohammadi r

in a 42-d experiment, 576 one-day-old vencobb 308 broiler chicks were used to investigate the effects of lecithin extract (0.5 g/kg), choline chloride 60% (1 g/kg) and bio choline (1 g/kg) in diets of moderate and high energy in a 4 × 2 factorial arrangement on performance and certain physiological traits in broiler chickens. the inclusion of bio choline and lecithin extract in the diet signifi...

Journal: :Journal of the American Chemical Society 1921

2005
C. W. Price

THE most recent work on the decomposition of lecithin is due to Fischgold and Chain [1934], who have obtained evidence that lecithin, even in the absence of air, undergoes a spontaneous change. This change was found to be due to separation of free fatty acid from the lecithin molecule. C. W. Price and Lewis [1933, 1] noted a change in the electrophoretic properties of lecithin as it became aged...

Journal: :علوم و تکنولوژی پلیمر 0
غلام باقری مرندی آزاده عزیزی کوروش کبیری محمدجلال الدین ظهوریان مهر حسین بوهندی

cross-linked polymeric organogels have attracted much attention in recent years. most synthesized organogels are based on low molecular weight or denderitic materials. the study focuses on the preparation of an alcohol absorbent organogel based on 2-acrylamido-2-methylpropane sulphonic acid (amps) through cross-linking polymerization. polyethylene glycol diacrylate-400 and ammonium persulphate ...

Journal: :تولیدات دامی 0
معصومه منطقی دانشجوی کارشناسی ارشد فیزیولوژی دام، گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان، اهواز - ایران مرتضی مموئی استاد گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان، اهواز - ایران صالح طباطبائی وکیلی دانشیار گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان، اهواز - ایران جمال فیاضی دانشیار گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان، اهواز - ایران خلیل میرزاده استادیار گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان، اهواز - ایران

the effect of various amount of soybean lecithin replaced with egg yolk to protect the ram semen in times of one hour after semen collection, as well as 24 and 48 hours after the semen store at 5°c was evaluated. semen was collected weekly for 8 weeks from 10 rams with 2-3 years old and average body weights of 64 kg. semen samples were pooled and divided into 4 parts. each part was diluted with...

Journal: :The Journal of biological chemistry 1979
Y A Isaacson P W Deroo A F Rosenthal R Bittman J O McIntyre H G Bock P Gazzotti S Fleischer

n-/3-Hydroxybutyrate dehydrogenase is a lipid-requiring enzyme which has an absolute requirement for lecithin for enzymic activity. We have studied the activation of the purified apodehydrogenase by a number of lecithin analogues with modifications in either the hydrophobic or polar regions of the molecule in order to map the structural specificity for the lecithin molecule. The apodehydrogenas...

Journal: :Chemical communications 2013
Suman K Samanta Santanu Bhattacharya

Organogels made of pyridine-end oligo-p-phenylenevinylenes with tartaric acid exhibit remarkable J-aggregation induced red-shifts (Δλ = 55 nm) and notable chirality transcription. Induction of liquid-crystalline behavior is also tuned in the supramolecular assembly.

Journal: :Journal of lipid research 1966
P Bjørnstad J Bremer

The in vivo biosynthesis of lecithin in rats has been studied with the precursors choline-1,2-(14)C, ethanolamine-1,2-(14)C and methionine-CH(3)-(14)C or -CH(3)-(3)H. Lecithin synthesis from choline is rapid in all organs. No sex difference was observed in this pathway. The biosynthesis of lecithin by methylation of phosphatidyl ethanolamine is of quantitative significance in the liver, but not...

Journal: :The British journal of venereal diseases 1957
D B TONKS R H ALLEN

When pure individual synthetic lecithins became available for study (Baer and Kates, 1949, 1950), there was immediate interest in their possible use in cardiolipin antigens as substitutes for Pangborn lecithin. Rosenberg (1949) reported briefly on synthetic L-c-(dipalmitoyl)-lecithin in antigens for the Hinton, Kline, Rein-Bossack, VDRL, and Kolmer tests. He found that replacement of Pangborn's...

2015
Wei-Wei Zhang Jun-Qi Jia Na Wang Cheng-Li Hu Sheng-Yong Yang Xiao-Qi Yu

Microemulsion-based organogels (MBGs) were effectively employed for the immobilization of four commonly used lipases. During the asymmetric hydrolysis of ketoprofen vinyl ester at 30 °C for 24 h, lipase from Rhizomucor miehei and Mucor javanicus immobilized in microemulsion-based organogels (RML MBGs and MJL MBGs) maintained good enantioselectivities (eep were 86.2% and 99.2%, respectively), an...

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