کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7583934 | 1492022 | 2019 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Production of stearidonic acid-rich triacylglycerol via a two-step enzymatic esterification
ترجمه فارسی عنوان
تولید تریاسیل گلیسرول غنی از اسید استایریدون از طریق استریاسیون دو مرحله ای آنزیمی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
The aim of this study was to synthesize stearidonic acid (SDA)-rich triacylglycerol (TAG) via a two-step lipase-catalyzed esterification under vacuum. SDA-rich fatty acid, which was prepared from echium oil via Candida rugosa lipase-catalyzed selective esterification, was used as the substrate. Two different immobilized lipases, Novozym 435 from Candida antarctica and Lipozyme TL IM from Thermomyces lanuginosus, were employed for the synthesis of SDA-rich TAG. In the first step, Novozym 435-catalyzed esterification of the SDA-rich fatty acid with glycerol was carried out for 2â¯h. In the second step, Lipozyme TL IM-catalyzed esterification of the reaction mixture from the first step was performed for an additional 10â¯h. The optimal reaction conditions for the second step were a temperature of 65â¯Â°C, an enzyme loading of 20%, and a vacuum of 0.7â¯kPa. Consequently, the maximum TAG conversion of ca. 86.4â¯wt% was obtained after 12â¯h via a two-step lipase-catalyzed esterification.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 270, 1 January 2019, Pages 332-337
Journal: Food Chemistry - Volume 270, 1 January 2019, Pages 332-337
نویسندگان
Nam Ho Kim, Heejin Kim, Nakyung Choi, Yangha Kim, Byung Hee Kim, In-Hwan Kim,