Ditemukan 2 dokumen yang sesuai dengan query
Vanida Chairgulprasert, author
ABSTRAK
Reduction of free fatty acid (FFA) in used palm oil was determined after treatment of waste cooking oil with an adsorbent derived from coffee bean husk ash. Coffee husks were burned at 600 ºC for 12 hrs to obtain the adsorbent ash. Free fatty acid removal efficiency was optimized with...
Pathum Thani: Thammasat University, 2018
607 STA 23:3 (2018)
Artikel Jurnal Universitas Indonesia Library
Vanida Chairgulprasert, author
The Robusta coffee flowers were analyzed for phytochemical composition and antioxidant activity. Flower powders at three different stages were extracted successively with hexane, dichloromethane and methanol, resulting in the extracts of varying yields (1.61-16.01%). All crude extracts were constituted of flavonoids, terpenoids and alkaloids. The methanol crude extracts exhibited the...
Prince of Songkla University. Faculty of Science and Technology, 2017
500 TIJST 22:1 (2017)
Artikel Jurnal Universitas Indonesia Library
