Ekstraksi Zat Pewarna Tekstil Alami dari Kulit Buah Alpukat (Percea Americana Mill)

Kusumawati, Agustina and , Dr. Ir. Ahmad M. Fuadi, M.T. (2018) Ekstraksi Zat Pewarna Tekstil Alami dari Kulit Buah Alpukat (Percea Americana Mill). Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

The dyestuff is a natural and synthetic material can provide a color. Natural dyes are better used because natural dye waste does not pollute the environment. Some materials can be made manufacture of natural dyes one of them is avocado peel because it contains a tannin substance that produces a brown color. The methode used is extraction. Extraction is done by heating the dried of avocado peel and sieved using a 60 mesh sieve. Five grams of dried avocado peel was inserted into the beaker glass and 100 mL solvent was added (aquades, 70% ethanol, and 96% ethanol), and then heated using hot plate for 15, 30, and 45 minutes at 50, 60, and 70 oC. After the extraction is subsequently extruded overnight and filter using filter paper. The extract analyzed by spectrophotometer to determine the absorbance of natural dye. The analysis was performed at a wavelength of 450 nm. The result of this research, the maximum time for extraction resulting in the highest absorbance was 45 minutes. The temperature variations, the maximum temperature to obtain the highest absorbance is 70 oC. As for the variation of type of solvent used to extract the dye from them avocado peel that the highest absorbance is produced from 96% ethanol with absorbance of 2,983.

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	zat pewarna alami, kulit buah alpukat, spektrofotometer, absorbansi
Subjects:	Q Science > QD Chemistry
Divisions:	Fakultas Teknik > Teknik Kimia
Depositing User:	AGUSTINA KUSUMAWATI
Date Deposited:	24 Jan 2018 01:41
Last Modified:	24 Jan 2018 01:41
URI:	http://eprints.ums.ac.id/id/eprint/58484

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