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Determination of carotene, tocopherols and tocotrienols in residue oil from palm pressed fiber using pressurized liquid extraction-normal phase liquid ... [An article from: Analytica Chimica Acta]
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This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2005. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
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Pressurized liquid extraction (PLE) along with normal phase liquid chromatography (NPLC) is evaluated as a new approach for the determination of @b-carotene and Vitamin E isomers in residue oil obtained from palm pressed fiber (PPF). The relative extraction recoveries obtained by optimized PLE were found to be equivalent (~100%) to conventional Soxhlet extraction. Optimized PLE was obtained (5g of sample, 80^oC, 1500psi, 2x 10min static extractions with flush volume 50%) combined with NPLC system. Typical extractions give 3.7-4.0mgml^-^1 of Vitamin E isomers and @b-carotene of 3.3-3.5mgml^-^1, which is similar to or greater than classical Soxhlet extraction with n-hexane or chloroform. The new developed method demonstrated an acceptable performance with good efficiency in terms of total extraction time, total solvent usage, total @b-carotene and Vitamin E isomers contents as well as exceptional method repeatability.
Description:
Pressurized liquid extraction (PLE) along with normal phase liquid chromatography (NPLC) is evaluated as a new approach for the determination of @b-carotene and Vitamin E isomers in residue oil obtained from palm pressed fiber (PPF). The relative extraction recoveries obtained by optimized PLE were found to be equivalent (~100%) to conventional Soxhlet extraction. Optimized PLE was obtained (5g of sample, 80^oC, 1500psi, 2x 10min static extractions with flush volume 50%) combined with NPLC system. Typical extractions give 3.7-4.0mgml^-^1 of Vitamin E isomers and @b-carotene of 3.3-3.5mgml^-^1, which is similar to or greater than classical Soxhlet extraction with n-hexane or chloroform. The new developed method demonstrated an acceptable performance with good efficiency in terms of total extraction time, total solvent usage, total @b-carotene and Vitamin E isomers contents as well as exceptional method repeatability.
