Effect of calcium carbonate and sucrose addition on the properties of roselle extract using response surface methodology

This study was conducted to determine the effect of calcium carbonate (CaCO3) and sucrose addition on roselle extract using Response Surface Methodology. A total of 21 treatments were used based on a Central Composite Rotatable Design (CCRD). Determination of pH and Brix were carried out. For pH, th...

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Main Authors:	Wan Zawiah Wan Abdullah, Md Zaidi Yahaya, Mohamad Yusof Maskat
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2012
Online Access:	http://journalarticle.ukm.my/3929/ http://journalarticle.ukm.my/3929/ http://journalarticle.ukm.my/3929/1/04%2520Wan.pdf

id	ukm-3929
recordtype	eprints
spelling	ukm-39292016-12-14T06:35:20Z http://journalarticle.ukm.my/3929/ Effect of calcium carbonate and sucrose addition on the properties of roselle extract using response surface methodology Wan Zawiah Wan Abdullah, Md Zaidi Yahaya, Mohamad Yusof Maskat, This study was conducted to determine the effect of calcium carbonate (CaCO3) and sucrose addition on roselle extract using Response Surface Methodology. A total of 21 treatments were used based on a Central Composite Rotatable Design (CCRD). Determination of pH and Brix were carried out. For pH, the model used was 4.03+0.39x1-8.20x2-0.05x12-4.16x22-0.02x1x2 where x1 is calcium carbonate and x2 is sucrose. The positive coefficient for calcium carbonate showed addition of calcium increased pH of the roselle extract. Model for Brix is 8.91 + 0.23x1 + 2.20x2. The positive coefficient for calcium carbonate and sucrose showed the addition of calcium carbonate and sucrose increased the degree of Brix of the roselle extract. Sensory evaluation using trained panelists (n=8) showed addition of sucrose increased overall acceptance for roselle extract. Addition of calcium carbonate reduced the overall acceptance due to the lowering of the sour taste. Universiti Kebangsaan Malaysia 2012-04 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/3929/1/04%2520Wan.pdf Wan Zawiah Wan Abdullah, and Md Zaidi Yahaya, and Mohamad Yusof Maskat, (2012) Effect of calcium carbonate and sucrose addition on the properties of roselle extract using response surface methodology. Sains Malaysiana, 41 (4). pp. 411-418. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	This study was conducted to determine the effect of calcium carbonate (CaCO3) and sucrose addition on roselle extract using Response Surface Methodology. A total of 21 treatments were used based on a Central Composite Rotatable Design (CCRD). Determination of pH and Brix were carried out. For pH, the model used was 4.03+0.39x1-8.20x2-0.05x12-4.16x22-0.02x1x2 where x1 is calcium carbonate and x2 is sucrose. The positive coefficient for calcium carbonate showed addition of calcium increased pH of the roselle extract. Model for Brix is 8.91 + 0.23x1 + 2.20x2. The positive coefficient for calcium carbonate and sucrose showed the addition of calcium carbonate and sucrose increased the degree of Brix of the roselle extract. Sensory evaluation using trained panelists (n=8) showed addition of sucrose increased overall acceptance for roselle extract. Addition of calcium carbonate reduced the overall acceptance due to the lowering of the sour taste.
format	Article
author	Wan Zawiah Wan Abdullah, Md Zaidi Yahaya, Mohamad Yusof Maskat,
spellingShingle	Wan Zawiah Wan Abdullah, Md Zaidi Yahaya, Mohamad Yusof Maskat, Effect of calcium carbonate and sucrose addition on the properties of roselle extract using response surface methodology
author_facet	Wan Zawiah Wan Abdullah, Md Zaidi Yahaya, Mohamad Yusof Maskat,
author_sort	Wan Zawiah Wan Abdullah,
title	Effect of calcium carbonate and sucrose addition on the properties of roselle extract using response surface methodology
title_short	Effect of calcium carbonate and sucrose addition on the properties of roselle extract using response surface methodology
title_full	Effect of calcium carbonate and sucrose addition on the properties of roselle extract using response surface methodology
title_fullStr	Effect of calcium carbonate and sucrose addition on the properties of roselle extract using response surface methodology
title_full_unstemmed	Effect of calcium carbonate and sucrose addition on the properties of roselle extract using response surface methodology
title_sort	effect of calcium carbonate and sucrose addition on the properties of roselle extract using response surface methodology
publisher	Universiti Kebangsaan Malaysia
publishDate	2012
url	http://journalarticle.ukm.my/3929/ http://journalarticle.ukm.my/3929/ http://journalarticle.ukm.my/3929/1/04%2520Wan.pdf
first_indexed	2023-09-18T19:40:08Z
last_indexed	2023-09-18T19:40:08Z
_version_	1777405535431163904

Effect of calcium carbonate and sucrose addition on the properties of roselle extract using response surface methodology

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