Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 42, Issue 1, Pages 233-238Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.lwt.2008.03.015
Keywords
Turmeric leaves; Oleoresin; Pressurised liquid extraction; Hydrodistillation and Soxhlet extraction
Categories
Funding
- Universiti Teknologi MARA (UiTM)
- Universiti Kebangsaan Malaysia (UKM)
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Pressurised liquid extraction (PLE) was used to obtain an oleoresin from aromatic turmeric leaves. Four major compounds, which constituted 72% oleoresin, were monitored during the optimisation study. Components in the extract were identified using GC/MS and retention indices. Based on maximum extraction of 1,8-cineole, the optimised operating conditions for PLE, were heating at 147 degrees C, a pressure of 7150 kPa and a static time of 17 min. The results obtained were compared with conventional isolation procedures, hydrodistillation and Soxhlet extraction, whereby the proposed method was found to be better in term of quantity of the targeted oleoresin compounds, namely, alpha-phellandrene, p-cymene, 1,8-cineole and terpinolene. (C) 2008 Swiss Society of Food Science and Technology. Published by Elsevier Ltd. All rights reserved.
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