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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Kgs Ahmadi1, Sri Kumalaningsih2, Susinggsih Wijana2 and Imam Santoso2
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DOI:10.17265/2159-5828/2012.10.003
Affiliation(s)
1. Agroindustry Technology, Agriculture Postgraduate Program, Brawijaya University, Malang, Indonesia
2. Departement of Agroindustry Technology, Brawijaya University, Malang, Indonesia
ABSTRACT
Palm fatty acid distillate
(PFAD), a by-product of deodorization in palm oil refining, contains about 0.7%-1% vitamin E. The
advantage of PFAD over other vitamin E sources is higher amount of tocotrienols
than that of tocopherols. Vitamin E purification of unsaponiable matter of PFAD
was aimed to remove other impurities to obtain high vitamin E concentration,
mainly tocotrienols. This research used low temperature solvent crystallization
to purify vitamin E. To optimize response of vitamin concentration, a response surface method
was applied with three factors, i.e., the ratio between
solvent and unsaponifiable matter (A), crystallization
temperature (B), and crystallization time (C). The relation of three factors
was quadratic with equation Y = -128.54361 + 41.33904A – 0.87995B + 1.58941C +
0.00290AB – 0.044324AC + 0.00120BC – 3.33113A2 – 0.039535B2 –
0.02710C2. The optimum crystallization condition was obtained at
ratio of solventto unsaponifiable matter of 6.04:1, crystallization temperature
of -10.54 °C, and crystallization time of 24.16 hours. Vitamin E
enriched fraction from optimum crystallization conditions contained vitamin E
of 20.13% (w/w).
KEYWORDS
Low tempareture solvent crystallization, palm fatty acid distillate, vitamin E enriched fraction, unsaponifiable matter.
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