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Anthocyanin Stability Studies in Tibouchina semidecandra

Janna Ong Abdullah, and Khairul Anuar Khairoji, and Maziah Mahmood, (2006) Anthocyanin Stability Studies in Tibouchina semidecandra. Malaysian Journal of Biochemistry and Molecular Biology, 13 (1). pp. 22-26. ISSN ISSN 1511-2616

Full text not available from this repository.

Official URL: http://ejum.fsktm.um.edu.my/ArticleInformation.aspx?ArticleID=589

Affiliations

Universiti Putra Malaysia. Faculty of Science & Environmental Studies. Dept. of Biochemistry & Microbiology
Universiti Putra Malaysia. Faculty of Science & Environmental Studies. Dept. of Biochemistry & Microbiology
Universiti Putra Malaysia. Faculty of Science & Environmental Studies. Dept. of Biochemistry & Microbiology

Abstract

The effects of pH, number of storage days, temperature, light and dark conditions on the stability of anthocyanin extracted from Tibouchina semidecandra flowers of different developmental stages were evaluated. Fully formed but unopened flower bud exhibited the highest amount of total anthocyanin extracted from per gram fresh weight of petals. The anthocyanin contents for all flower developmental stages were stable at pH 0.5 to 3.0 but the colour of the extracts faded at higher pH values. Degradation percentages of total anthocyanin in the extracts kept at 25ºC were 7 to 20% lower than that maintained at 31°C. Extracts stored in darkness at 25ºC maintained their purple colour for 16 days while light exposure reduced it to an average of 10 days.

Item Type:Journal
Additional Information:The project was supported by the IRPA Grant (09-02-04-0548) from the Ministry of Science, Technology and Environment, Malaysia
Keywords:anthocyanin, colourant, pigment, Melastomataceae, Tibouchina semidecandra
Subjects:Q Science, Computer Science
R Medicine, Dentistry, Pharmacy, Nursing
ID Code:2244

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