Effect of Ethanol Addition as Extraction Solvent on The Content of Bioactive Materials in Dragon Fruit Skin Extract and Powder
-
Department of Food Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Indonesia 
Copyright (c) 2020 Reaktor
License URL: http://creativecommons.org/licenses/by-nc-sa/4.0
This study aims to produce natural pigments for food prepared from dragon fruit skin by extraction and freeze-drying and to assess the effect of additional ethanol as extraction solvent on the process yield. During extraction stage, the effect of solvent (pure water and additional ethanol) on the yield of bioactive materials was assessed. Furthermore, during freeze-drying, the effect of maltodextrin addition as carrier agent on the quality of powder has also been evaluated. It has been found that the addition of ethanol as extraction co-solvent may give a positive effect on the yield of bioactive materials in the dragon fruit skin extracts, including the contents of anthocyanin, betacyanin, and total phenolic compounds. Regarding freeze drying, it was found that high recoveries of bioactive materials (84-92%) had been achieved, which indicates that freeze-drying may be suitable for drying such heat-sensitive materials. In addition, it was found that the addition of 10% maltodextrin as carrier agent may decrease the moisture content of the powder significantly, up to 8.162.12%, which is beneficial for its storage stability.
Keywords: betacyanin; food additives; dragon fruit; extraction; anthocyanin.
Article Metrics:
Last update: 2021-02-25 14:11:19
Last update: 2021-02-25 14:11:20
License URL: http://creativecommons.org/licenses/by-nc-sa/4.0
The Authors submitting a manuscript do so on the understanding that if accepted for publication, copyright of the article shall be assigned to Reaktor journal and Department of Chemical Engineering Diponegoro University as the journal publisher. Copyright encompasses exclusive rights to reproduce and deliver the article in all form and media, including reprints, photographs, microfilms and any other similar reproductions, as well as translations. The reproduction of any part of this journal, its storage in databases and its transmission by any form or media, such as electronic, electrostatic and mechanical copies, photocopies, recordings, magnetic media, etc., will be allowed only with a written permission from Reaktor journal and Department of Chemical Engineering Diponegoro University.