Extraction and Identification of Water-Soluble Compounds in Palm-Pressed Fiber by SC-CO2 and GC-MS
Harrison Lau Lik Nang, Choo Yuen May, Ma Ah Ngan and Chuah Cheng Hock
DOI : 10.3844/ajessp.2007.54.59
American Journal of Environmental Sciences
Volume 3, Issue 2
The residual oil recovered from palm-pressed fiber is known to contain high level of carotenes (4,000 mg kgˉ1 to 6,000 mg kgˉ1) and vitamin E such as tocopherols and tocotrienols (2,000 mg kgˉ1 to 3,000 mg kgˉ1). In this study, the water-soluble compounds in fresh palm-pressed fiber were recovered by supercritical carbon dioxide (SC-CO2) extraction. The concentration of these compounds in palm-pressed fiber oil recovered was determined in the range of 1,000 mg kgˉ1 to 2,000 mg kgˉ1. A total of 12 compounds have been identified from this water-soluble extract with molecular weights ranging from 126 amu. to 208 amu.. Preliminary results showed that these water-soluble compounds possess superior antioxidant properties screening using FRAP (Ferric Reducing Ability of Plasma) and TEAC (Trolox Equivalent Antioxidant Capacity) assays.
© 2007 Harrison Lau Lik Nang, Choo Yuen May, Ma Ah Ngan and Chuah Cheng Hock. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.