ANALISIS VITAMIN C PADA DAUN KENIKIR SEGAR (Cosmos caudatus Kunth.) SECARA SPEKTROFOTOMETRI UV-VIS

Astuti, Mariya (2018) ANALISIS VITAMIN C PADA DAUN KENIKIR SEGAR (Cosmos caudatus Kunth.) SECARA SPEKTROFOTOMETRI UV-VIS. Karya Tulis Ilmiah thesis, Universitas Setia Budi Surakarta.

	Text INTISARI.pdf Download (89kB)
	Text KTI.pdf Restricted to Repository staff only Download (2MB) | Request a copy

Abstract

Vitamin C called also of ascorbic acid, that changes readily to oxidation, but very profitable for the people. The main source of vitamin C much found in of fresh fruits and vegetables. This research is a purpose to analysis of vitamin C on fresh kenikir leaves in UV-Vis spectrophotometry. This research begins with determination of kenikir plant. A qualitative analysis continued quantitative analysis in UV-Vis spectrophotometry. With a curve standard raw to produce equation y = a + bx. Variation concentration of vitamin C the raw 3,54 ppm; 4,72 ppm; 5,9 ppm; 7,08 ppm; and 8,26 ppm. Then will be operating time during 15 minutes and determination of the maximum length wave on 240-280 nm. Fresh kenikir leaves crushed then centrifuge and then analysis in UV-Vis spectrophotometry. The results of the research qualitative analysis shows that there has been the moisture content of vitamin C on fresh kenikir leaves and by quantitative analysis obtained levels of vitamin C of 0,23 % b/b ± 0,028. Keywords: vitamin C, fresh kenikir leaves, UV-VIS spectrophot

Item Type:	Thesis (Karya Tulis Ilmiah)
Uncontrolled Keywords:	vitamin C, fresh kenikir leaves, UV-VIS spectrophot
Subjects:	R Medicine > RS Pharmacy and materia medica
Divisions:	Fakultas Farmasi > Prodi D3 Farmasi
Depositing User:	B Supri Yadi
Date Deposited:	20 Feb 2020 03:24
Last Modified:	20 Feb 2020 03:24
URI:	http://repo.setiabudi.ac.id/id/eprint/2457

Actions (login required)

View Item