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Determination of the stability of anthocyanins extracts from Plumeria rubra / Nadia Mohamed Yusoff

Nowadays, natural dyes have been used widely in many sectors such as food industry. An intensive research also have been conducted to replace synthetic dyes with natural dyes as sensitizer for dye-sensitized solar cell (DSSC) as it is more economical and environmental friendly than synthetic dyes. H...

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Main Author: Mohamed Yusoff, Nadia
Format: Student Project
Language:English
Published: 2015
Subjects:
Temperature
Extraction (Chemistry)
Online Access:https://ir.uitm.edu.my/id/eprint/83485/1/83485.PDF
https://ir.uitm.edu.my/id/eprint/83485/
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spelling my.uitm.ir.834852024-01-04T06:52:07Z https://ir.uitm.edu.my/id/eprint/83485/ Determination of the stability of anthocyanins extracts from Plumeria rubra / Nadia Mohamed Yusoff Mohamed Yusoff, Nadia Temperature Extraction (Chemistry) Nowadays, natural dyes have been used widely in many sectors such as food industry. An intensive research also have been conducted to replace synthetic dyes with natural dyes as sensitizer for dye-sensitized solar cell (DSSC) as it is more economical and environmental friendly than synthetic dyes. However, it becomes a problem as natural dyes are less stable than synthetic dyes. This study was carried out to determine the optimal conditions for anthocyanins extraction from Plumeria rubra flower by using different extraction solvents, time and extraction temperatures. The light stability of Plumeria rubra flower extract was also investigated. The anthocyanin in Plumeria rubra was extracted by using simple extraction method. At various temperatures of 30, 35, 40, 45 and 50°C, the anthocyanins concentration were found to be in the range of 0.5360 to 0.6178 mg L- 1 in 95% ethanol solvent and 0.3044 to 0.6587 mg L- t in water solvent. The total content of anthocyanins extracted at 40°C using 95% ethanol solvent increased from 0.09086 to 0.79952 mg L- l in the range of 2 to 24 hours extraction time. The optimum extraction condition of anthocyanins from Plumeria rubra was in 95% ethanol at 40°C for 24 hours for extraction solvent, temperature and time respectively. The extraction efficiency under the optimum conditions was 0.79952 mg L- t. The degradation of anthocyanins pigment increased up to 72.65% as the exposure time increased from 0 to 24 hours. The stability of anthocyanins extract was significantly affected by the presence of UV light. 2015 Student Project NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/83485/1/83485.PDF Determination of the stability of anthocyanins extracts from Plumeria rubra / Nadia Mohamed Yusoff. (2015) [Student Project] <http://terminalib.uitm.edu.my/83485.pdf> (Unpublished)
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Temperature
Extraction (Chemistry)
spellingShingle Temperature
Extraction (Chemistry)
Mohamed Yusoff, Nadia
Determination of the stability of anthocyanins extracts from Plumeria rubra / Nadia Mohamed Yusoff
description Nowadays, natural dyes have been used widely in many sectors such as food industry. An intensive research also have been conducted to replace synthetic dyes with natural dyes as sensitizer for dye-sensitized solar cell (DSSC) as it is more economical and environmental friendly than synthetic dyes. However, it becomes a problem as natural dyes are less stable than synthetic dyes. This study was carried out to determine the optimal conditions for anthocyanins extraction from Plumeria rubra flower by using different extraction solvents, time and extraction temperatures. The light stability of Plumeria rubra flower extract was also investigated. The anthocyanin in Plumeria rubra was extracted by using simple extraction method. At various temperatures of 30, 35, 40, 45 and 50°C, the anthocyanins concentration were found to be in the range of 0.5360 to 0.6178 mg L- 1 in 95% ethanol solvent and 0.3044 to 0.6587 mg L- t in water solvent. The total content of anthocyanins extracted at 40°C using 95% ethanol solvent increased from 0.09086 to 0.79952 mg L- l in the range of 2 to 24 hours extraction time. The optimum extraction condition of anthocyanins from Plumeria rubra was in 95% ethanol at 40°C for 24 hours for extraction solvent, temperature and time respectively. The extraction efficiency under the optimum conditions was 0.79952 mg L- t. The degradation of anthocyanins pigment increased up to 72.65% as the exposure time increased from 0 to 24 hours. The stability of anthocyanins extract was significantly affected by the presence of UV light.
format Student Project
author Mohamed Yusoff, Nadia
author_facet Mohamed Yusoff, Nadia
author_sort Mohamed Yusoff, Nadia
title Determination of the stability of anthocyanins extracts from Plumeria rubra / Nadia Mohamed Yusoff
title_short Determination of the stability of anthocyanins extracts from Plumeria rubra / Nadia Mohamed Yusoff
title_full Determination of the stability of anthocyanins extracts from Plumeria rubra / Nadia Mohamed Yusoff
title_fullStr Determination of the stability of anthocyanins extracts from Plumeria rubra / Nadia Mohamed Yusoff
title_full_unstemmed Determination of the stability of anthocyanins extracts from Plumeria rubra / Nadia Mohamed Yusoff
title_sort determination of the stability of anthocyanins extracts from plumeria rubra / nadia mohamed yusoff
publishDate 2015
url https://ir.uitm.edu.my/id/eprint/83485/1/83485.PDF
https://ir.uitm.edu.my/id/eprint/83485/
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score 13.211869

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