Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Medicine and Health Sciences
Skrining Fitokimia Dan Aktivitas Antioksidan Fraksi Etanol Alga Merah Eucheuma Spinosum, Bina Lohita Sari, Nurulia Susanti, Sutanto Sutanto
Skrining Fitokimia Dan Aktivitas Antioksidan Fraksi Etanol Alga Merah Eucheuma Spinosum, Bina Lohita Sari, Nurulia Susanti, Sutanto Sutanto
Pharmaceutical Sciences and Research
The red alga, Eucheuma spinosum from South Bangka Waters was shown to contain antioxidant activity. Natural antioxidants from algae are known to play an important role against various diseases and aging processes. The study objective was to investigate phytochemical screenings and antioxidant activity of ethanol fractions Euchema spinosum from south Bangka waters. Antioxidant activities of fresh algae (FA), dry algae (DA), and algae product (AP) were determined with DPPH (1,1-diphenyl-2-picrylhydrazyl) assay. Extraction was conducted using 70% ethanol in acidic environment for 24 hours. Then, the extract was evaporated using rotary evaporator. Dry extract was fractionated with ethanol - n - …
Pengaruh Kandungan Komponen Minor Dari Minyak Kelapa Sawit (Elaeis Guineensis Jacq.) Terhadap Aktivitas Antioksidan Pada Proses Pemurnian Karotenoid, Ahmad Gazali Sofwan Sinaga, Donald Siahaan
Pengaruh Kandungan Komponen Minor Dari Minyak Kelapa Sawit (Elaeis Guineensis Jacq.) Terhadap Aktivitas Antioksidan Pada Proses Pemurnian Karotenoid, Ahmad Gazali Sofwan Sinaga, Donald Siahaan
Pharmaceutical Sciences and Research
Palm oil contains carotenoid and vitamin E which possess antioxidant properties. A long exposure of heat and chemical substances during the purification process may lower antioxidant activity. This research was conducted to compare antioxidant activity of carotenoid and vitamin E obtained from each stage of three continuous purification process (transesterification, solvolytic micellization, and saponification). Total carotenoid concentration was analyzed by UV-visible spectrophotometer at λ 446 nm and total vitamin E concentration was analyzed by high-performance liquid chromatography, while ester and triglyceride concentration were analyzed by gas chromatography. Antioxidant activity was measured by DPPH assay with incubation time in 60 minutes. …