Kesan penambahan kalsium karbonat dan sukrosa ke atas ciri ekstrak roselle menggunakan kaedah respon permukaan

Translated title of the contribution: 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

Research output: Contribution to journalArticle

Abstract

This study was conducted to determine the effect of calcium carbonate (CaCO 3) 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+0.39x 1-8.20x 2-0. 05x 1 2-4.16x 2 2-0.02x 1x 2 where x 1 is calcium carbonate and x 2 is sucrose. The positive coefficient for calcium carbonate showed addition of calcium increased pH of the roselle extract. Model for Brix is 8.91 + 0.23x 1 + 2.20x 2. 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.

Original languageUndefined/Unknown
Pages (from-to)411-418
Number of pages8
JournalSains Malaysiana
Volume41
Issue number4
Publication statusPublished - Apr 2012

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Hibiscus sabdariffa
calcium carbonate
response surface methodology
sucrose
extracts
brix
sensory evaluation
calcium

Keywords

  • Calcium carbonate
  • Response Surface Methodology
  • Roselle
  • Sucrose

ASJC Scopus subject areas

  • General

Cite this

Kesan penambahan kalsium karbonat dan sukrosa ke atas ciri ekstrak roselle menggunakan kaedah respon permukaan. / Abdullah, Wan Zawiah Wan; Yahaya, Md Zaidi; Maskat, Mohamad Yusof.

In: Sains Malaysiana, Vol. 41, No. 4, 04.2012, p. 411-418.

Research output: Contribution to journalArticle

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