@article {10.3844/ajassp.2007.374.377,
article_type = {journal},
title = {The Effect of Physical Refining on Palm Vitamin E (Tocopherol, Tocotrienol and Tocomonoenol) },
author = {Puah, Chiew Wei and Choo, Yuen May and Ma, Ah Ngan and Chuah, Cheng Hock},
volume = {4},
year = {2007},
month = {Jun},
pages = {374-377},
doi = {10.3844/ajassp.2007.374.377},
url = {https://thescipub.com/abstract/ajassp.2007.374.377},
abstract = {This study reports the effect of physical refining on palm vitamin E including α- tocopherol, α-, γ and α-tocotrienols as well as α- tocomonoenol. A method using HPLC with fluorescence detector using normal phase silica column is described. An isocratic elution with n-hexane/THF/2-propanol (1000:60:4, by vol.) as mobile phase was used. The structure of the α- tocomonoenol was determined using gas chromatography coupled with mass spectrometry. The composition of the vitamers were α-tocopherol (14-17%), α-tocotrienol (22-24%), γ- tocotrienol (49-53%), α- tocotrienol (6-7%) and α- tocomonoenol (3%) throughout the physical refining. The concentration of all vitamers in crude palm oil was 1273±18 ppm. The concentrations of all vitamers in degummed palm oil, bleached palm oil and deodorized palm oil were 1134±20 ppm, 1095±18 ppm and 1029±18 ppm, respectively. This method provides fast and valuable information with minimal analysis time and no sample pre-treatment. },
journal = {American Journal of Applied Sciences},
publisher = {Science Publications}
}