83 23rd 25th june 2010 3rd icyc 2010 universiti sains

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: y In the present work, hollow fibre liquid-phase microextraction (LPME) followed by gas-chromatographyflame ionization detector (GC-FID) determination of the fatty acids (FAs), namely methyl laurate, methyl tridecanoate, methyl myristate, methyl palmitate, methyl palmitolate, methyl stearate, methyl oleate, methyl linoleate, methyl linolenate and methyl arachidate in vegetable oils parameters such as type of extraction solvent, temperature, extraction time, stirring speed and salt addition were studied and optimized. For the best conditions (extraction solvent, n-tridecane; extraction time, 35 min; extraction temperature ambient; without addition of salt), enrichment factors varying from 37.0 to 115 were achieved. The method was successfully applied to mainly crude palm, palm olein, palm kernel and other vegetable oil (soybean, olive, coconut, rice bran and pumpkin ), offering an interesting alternative to liquid–liquid extraction and solid phase extraction for the analysis of FAs in palm and other vegetable oils samples. ANA-P17 PRELIMINARY REPORT ON SEPARATION OF MONILIFORMIN BY HPLC USING HILIC COLUMN 1 Gazala-Ben hander, 1 2 1,* Muhammad Idiris Seeh, Baharuddin Salleh and Bahruddin Saad 2 1 School of Chemical Sciences, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia School of Biological Sciences, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia E-mail: midiris@usm.my In this project a detection method of Moniliformin (MON) by HPLC using hydrophilic interaction chromatography (HILIC) column was developed. The mobile phase composition, of (MeCN: water) was studied and the best composition was found at 85:15 v/v with HETP equal to 0.12. The retention time of about 3.9 min is the reasonable time for multisample analysis in the application in biological sample in future application. The sharp peak was obtained with UV detector at 5 ppm without having buffer in the mobile phase. 84 3rd ICYC 2010 Universiti Sains Malaysia ANA-P18 23rd-25th June 2010 POTENTIOMETRIC BIOSENSOR FOR UREA CONSTRUCTED FROM CARBON NANOTUBE AND...
View Full Document

This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.

Ask a homework question - tutors are online