Pemanfaatan Ekstrak Daun Rhoeo discolor sebagai Indikator Asam Basa Alternatif Berupa Kertas dengan Variasi Jenis Pelarut dan Jenis Kertas

Wulandari, Tri and , Dra. Aminah Asngad, M.Si (2018) Pemanfaatan Ekstrak Daun Rhoeo discolor sebagai Indikator Asam Basa Alternatif Berupa Kertas dengan Variasi Jenis Pelarut dan Jenis Kertas. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

The pH indicator is very important in its existence to support the preoccupation of certain material concepts that require practicum, especially on Classification of Substance materials in science teaching in secondary schools. Some plant species can be used as alternative acid-base indicators because they contain anthocyanins. Rho-discolor leaves contain pigment which is a flavonoid compound that is anthocyanin. This study aims to determine the effect of discoloration and pH of Rhoeo discolor leaf extract as a natural base acid indicator with variation of solvent type and paper type. This research used experimental method with Randomized Complete Random (RAL) using two treatment factors that are variation of solvent type (96% ethanol and 96% ethanol + 1% HCl) and paper type (strainer, opaque, HVS). Based on the results of the research that has been done, it can be concluded that the best quality is indicated by acid-base indicator paper with 96% ethanol + 1% HCl solvent using filter paper, because it is able to show more contrast color degradation after being tested in strong acidic, acidic solutions weak, strong base and weak base.

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	anthocyanin,indicator, Rhoeo discolor ,solvent.
Subjects:	Q Science > Q Science (General)
Divisions:	Fakultas Keguruan dan Ilmu Pendidikan > Pendidikan Biologi
Depositing User:	TRI WULANDARI
Date Deposited:	09 Aug 2018 02:50
Last Modified:	09 Aug 2018 02:50
URI:	http://eprints.ums.ac.id/id/eprint/65607

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