کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7606508 | 1492949 | 2017 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quantification of triglyceride content in oleaginous materials using thermo-gravimetry
ترجمه فارسی عنوان
محاسبه مقدار تری گلیسیرید در مواد نفتی با استفاده از ترموگرومتری
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Laboratory analytical methods for quantification of triglyceride content in oleaginous biomass samples, especially microalgae, require toxic chemicals and/or organic solvents and involve multiple steps. In this paper, a simple triglyceride quantification method that uses thermo-gravimetry is described. This method is based on the observation that triglycerides undergo near-complete volatilization/degradation over a narrow temperature interval with a derivative weight loss peak at 420 °C when heated in an inert atmosphere. Degradation of the other constituents of oleaginous biomass (protein and carbohydrates) is largely complete after prolonged exposure of samples at 320 °C. Based on these observations, the triglyceride content of oleaginous biomass was estimated by using the following two-step process. In Step 1, samples were heated to 320 °C and kept isothermal at this temperature for 15 min. In Step 2, samples were heated from 320 °C to 420 °C and then kept isothermal at 420 °C for 15 min. Our results show that mass loss in step 2 correlated well with triglyceride content estimates obtained from conventional techniques for diverse microalgae and oilseed samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Analytical and Applied Pyrolysis - Volume 128, November 2017, Pages 232-237
Journal: Journal of Analytical and Applied Pyrolysis - Volume 128, November 2017, Pages 232-237
نویسندگان
Balakrishna Maddi, Agasteswar Vadlamani, Sridhar Viamajala, Sasidhar Varanasi,