Preliminary study on the analysis of coconut oil methyl ester by capillary gas chromatography | การศึกษาในเบื้องต้นถึงวิธีการวิเคราะห์คุณสมบัติของเมทิลเอสเทอร์จากน้ำมันมะพร้าวโดยเทคนิคแก๊สโครมาโทกราฟี
2002
Lalita Attanatho(Thailand Institute of Scientific and Technological Research, Bangkok (Thailand). Environment, Ecological and Energy Department) | Orapen Nuesuwan(Thailand Institute of Scientific and Technological Research, Bangkok (Thailand). Industrial Metrology and Testing Service Centre. Analytical Chemistry Laboratory) | Peesamai Jenvanitpanjakul(Thailand Institute of Scientific and Technological Research, Bangkok (Thailand). Environment, Ecological and Energy Department)
Analysis of coconut oil methyl ester by capillary gas chromatography was studied. Methyl esters were prepared from coconut oil through transesterification in batch reactor, using potassium hydroxide as a catalyst. Prior to analysis, the samples were derivatized to be volatile substances with N-methyl-N-trimethysilyltrifluoroacetamide (MSTFA)Qualitative and quantitative analysis of coconut oil methyl ester were performed with gas chromatograph equipped with a FID and 15 m*0.32 mm DB-5ht capillary column. It was found that separation of methyl ester, mono-,di- and triglyceride was obtained by temperature programming from 50-350 deg C. This analytical method gave good results for analysis of methyl ester content in coconut oil methyl ester product.
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