Aktivitas Antioksidan Senyawa Benzophenon dan Biflavonoid dari Kulit Batang Garcinia nigrolineata (Kandis Keling)

Aminah, Sitti (2009) Aktivitas Antioksidan Senyawa Benzophenon dan Biflavonoid dari Kulit Batang Garcinia nigrolineata (Kandis Keling). Other thesis, Institut Teknologi Sepuluh Nopember.

Text 1407201758-Undergraduate_thesis.pdf Restricted to Repository staff only Download (24MB)

Abstract

Dua senyawa fenolat telah diisolasi dari kulit batang Garcinia nigrolineata (kandis keling), yaitu Aristofenon B (1) dan 3", 4', 4'", 5, 5", 7, 7",heptahidroksi-3,8" -bitlavanon (2), Kedua senyawa tersebut didapatkan dengan maserasi menggunakan pelarut etil asetat, dilanjutkan dengan fraksinasi menggunakan metode kromatografi. Penentuan struktur senyawa dilakukan berdasarkan data spektroskopi UV, IR,1H-NMR dan13C-NMR. Penentuan bioaktivitas antioksidan senyawa ini dengan metode DPPH yang diukur absorbansinya pada A. 517 nm. Kedua senyawa tersebut menunjukkan aktivitas antioksidan dengan IC50 berturut-turut 71,69 dan 50,99 ppm.
======================================================================================================================================
Two phenolic compounds have been isolated from stem bark of garcinia nigrolineata (kandis keeling), Aristofenon B (1) dan 3", 4', 4'", 5, 5", 7,T', -heptahidroksi-3,8" -biflavano (2) . Both of them were obtained by maseration using ethyl acetate followed by fractionated using chromatography method. Elucidation structures were estabhilised on the basis spectroscophic data UV, IR, 1H-NMR dan 13C-NMR. They were evaluated for their antioxidant activities based on DPPH assay measured in A. 517 nm. Both of them exhibited radical scavenging activity with IC50 for (1) and (2) are 71,69 ppm and 50,99 ppm.

Item Type:	Thesis (Other)
Additional Information:	RSKi 613.286 Ami a
Uncontrolled Keywords:	Garcinia nigrolineata , senyawa fenolat, antioksidan, DPPH,Garcinia nigrolineata, phenolic compounds, antioxidant, DPPH.
Subjects:	Q Science > QD Chemistry > QD481 Chemical structure.
Divisions:	Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	magang .
Date Deposited:	16 Oct 2026 06:30
Last Modified:	16 Oct 2026 06:30
URI:	http://repository.its.ac.id/id/eprint/145648

Actions (login required)

View Item