کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1190228 963527 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Antioxidant activity of Spirulina platensis extracts by supercritical carbon dioxide extraction
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Antioxidant activity of Spirulina platensis extracts by supercritical carbon dioxide extraction
چکیده انگلیسی

Supercritical CO2 extraction of antioxidants from Spirulina platensis was optimized using response surface methodology. About 10.26 g/kg of extracts from S. platensis could be obtained under the optimum conditions of 48 °C at 20 MPa over a 4 h period. The antioxidant activity of the extracts prepared under the optimized condition, determined by linoleic acid peroxidation inhibition method, was lower compared with BHT and Trolox, but significantly higher than α-tocopherol in 300 min and became similar to α-tocopherol after that. The components of the extracts were further analyzed, and the results showed that the extracts contained 85.1 g/kg of flavonoids, 77.8 g/kg of β-carotene, 113.2 g/kg of vitamin A and 3.4 g/kg of α-tocopherol, which may contribute greatly to their high antioxidant activity. The main fatty acids in the extracts were palmitic acid (35.32%), linolenic acid (21.66%) and linoleic acid (20.58%).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 105, Issue 1, 2007, Pages 36–41
نویسندگان
, , , , ,