Drying Behavior of Moringa Oleifera Leaves using Tray Dryer

Authors

  • Nabilah Abdul Samad Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
  • Yanti Maslina Mohd Jusoh Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
  • Nor Alafiza Yunus Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
  • Ida Idayu Muhamad Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
  • Daniel Joe Dailin Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
  • Noorazwani Zainol Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
  • Dayang Norulfairuz Abang Zaidel Department of Chemical and Environmental Engineering, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur, Malaysia

DOI:

https://doi.org/10.37934/arfmts.105.2.182191

Keywords:

Moringa oleifera, drying, tray dryer, color, protein, iron, total phenolic content analysis

Abstract

Moringa oleifera leaves have been dried in a tray drier to investigate the drying behaviors of Moringa oleifera leaves at three different temperatures for their moisture content, color, iron and protein content, as well as total phenolic content. Three levels of temperatures were chosen varying from 50, 60 and 70 °C in this study. Drying time reduced significantly with the rise in temperature. The final moisture content of dried leaves at 50, 60 and 70 °C was 4.89, 4.79, and 4.59 % and reached equilibrium moisture content at 4, 2, and 1.5 hours. For the water activity, all the dried leaves give a low amount of water activity from 0.0912 to 0.1838 at 70 - 50 °C where the higher the temperature the lower the water activity. This indicates that the lower the temperature, the slower the drying time required to decrease moisture content to below 5 % and a smaller amount of water activity. This ability to preserve its taste and nourishment. For the color changes, the value for greenness (-a) has no significant difference but notable differences were detected between the color parameters of fresh and dried leaves for whiteness L value and yellowness b. This shows that drying under a tray dryer has the same color as the fresh M. oleifera leaves. There was no notable difference in the value for protein but a significant difference (P<0.05) in the value for iron contents of the fresh and dried leaves. The total phenolic content (TPC) obtained from this study was 46.97 - 55.78 mg GAE/g FW for drying at 50 to 70 °C. Results from this study discover a great option for large-scale drying using method.

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Author Biographies

Nabilah Abdul Samad, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia

nabilah.asahi@gmail.com

Yanti Maslina Mohd Jusoh, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia

yantimaslina@utm.my

Nor Alafiza Yunus, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia

alafiza@utm.my

Ida Idayu Muhamad, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia

idaidayu@utm.my

Daniel Joe Dailin, Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia

jddaniel@utm.my

Noorazwani Zainol, Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia

noorazwani@utm.my

Dayang Norulfairuz Abang Zaidel, Department of Chemical and Environmental Engineering, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur, Malaysia

dnorulfairuz@utm.my

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Published

2023-06-12

How to Cite

Nabilah Abdul Samad, Yanti Maslina Mohd Jusoh, Nor Alafiza Yunus, Ida Idayu Muhamad, Daniel Joe Dailin, Noorazwani Zainol, & Dayang Norulfairuz Abang Zaidel. (2023). Drying Behavior of Moringa Oleifera Leaves using Tray Dryer. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 105(2), 182–191. https://doi.org/10.37934/arfmts.105.2.182191

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