کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8879952 1624791 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extraction of lipids from spent coffee grounds with non-polar renewable solvents as alternative
ترجمه فارسی عنوان
استخراج لیپیدها از محلول قهوه مصرف شده با حلال های قابل تجدید غیر قطبی به عنوان
کلمات کلیدی
زمینه های قهوه مصرفی، حلال های غیر قطبی، مرحله شستشو، عملکرد لیپید، توکوفرول،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Spent coffee grounds (SCG) contain significant amounts of lipids (∼16%w/w), which could potentially be utilized as feedstock in biodiesel production. Together with other lipids are tocopherols, which can be taken advantage of to improve the oxidation stability of the biodiesel. Lipids from SCG are preferably extracted with the aid of a solvent (n-hexane). Alternative non-polar solvents have been explored, but discrepancies exist between the yield and recovery values reported. In this study, a washing step, with saline solution as wash agent, after lipid extraction is introduced to determine the actual amount of available crude lipid extracted. The effects of extraction time on lipid yield from spent coffee grounds using different solvents (ethyl acetate, ethanol, isopropanol, and n-propanol) as an alternative were investigated. The use of ethyl acetate and n-propanol as extracting solvents enabled the complete recovery of the available lipids from the SCG. Moreover, the washing step introduced allowed a more objective assessment of the crude lipid extracted by alternative solvents. Furthermore, the tocopherol content in SCG (19.35 mg/100 g dry SCG) found in the lipid extracts was also determined. It was found that ethyl acetate and n-propanol were able to simultaneously extract about 93 and 87% of the available tocopherol in SCG, respectively, after an extraction time of 6 h.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 119, 1 September 2018, Pages 152-161
نویسندگان
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