Herbal Extract Decolourization Device Using Activated Carbon

Authors

  • Teh Liam Chee Department of Bioprocess Engineering, Faculty of Chemical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
  • Rozilawati Abdul Gaffar Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
  • Fadzilah Adibah Abdul Majid Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
  • Mohammad Roji Sarmidi Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia

DOI:

https://doi.org/10.11113/jt.v61.1626

Keywords:

Activated carbon, adsorption, herbal extract, Langmuir Isotherm, decolourization

Abstract

Herbal extracts are known for their antioxidant, antimicrobial, and anti–inflammatory properties. However, the intense colour caused by their phenolic content and dark–coloured compounds may spoil the final product’s appearance. To remedy that, this study was undertaken to design a decolourization device to eliminate the intense colour of herbal extracts while retaining their beneficial properties. Batch experiments have been conducted to study decolourization and its effect on extract quality. From there, a decolourization device has been devised using activated carbon. Operating at optimum conditions, the device was able reduce 81 % of the total phenolic content of cashew leaf extracts while retaining 88 % of its radical scavenging capacity. Furthermore, the device is able to re–design the extract’s colour to fulfill the end–user’s needs by manipulating the contact period. The design of this device best fits Langmuir isotherm which demonstrates monolayer coverage of adsorbate at the outer surface of activated carbon.

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Published

2013-02-15

Issue

Section

Science and Engineering

How to Cite

Herbal Extract Decolourization Device Using Activated Carbon. (2013). Jurnal Teknologi (Sciences & Engineering), 61(1). https://doi.org/10.11113/jt.v61.1626