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Official thesis title: Research method for determining the fatty acids in some kinds of plant oil and animal fat in Vietnam by chromatographic techniques
1. Full name: Vo Thi Viet Dung
2. Sex: Famale
3. Date of birth: 25/02/1983
4. Place of birth: Thua Thien Hue, Viet Nam
5. Admission decision number: 5429/QĐ-SĐH dated 30/10/2008 of Vietnam National University
6. Changes in academic process: The decision to adjust the name doctoral thesis and the collective staff of 738/QD-SDH-TN of VNU University of Science, Vietnam National University, Hanoi.
7. Official thesis title: Research method for determining the fatty acids in some kinds of plant oil and animal fat in Vietnam by chromatographic techniques.
8. Major: Analytical Chemistry
9. Code: 62 44 29 01
10. Supervisors: 1. Assoc.Prof.Dr. Nguyen Xuan Trung
2. Assoc.Prof.DrSc. Luu Van Boi
11. Summary of the new findings of the thesis:
Research has examined the machine parameters, modeling and optimization of factors affecting the ability of the system analysis device GC/FID. Optimal conditions of GC/FID for separation and simultaneous determination of 37 fatty acids methyl ester in the mixture with the ability to separate over 95% (R = 1.08) and good repeatability (RSD = 2.12%) is: Column separation: capillary column with strong polarization SPTM –2560 (100 m × 0.25 mm × 0.2 mm), column oven temperature program: start temperature: 1400C, hold for 5 minutes, up 2,40C/min to 2400C, hold for 8 minutes; carrying gas: He, speed 20.5 cm/s; pump flow rate divided by 30:1; detector FID at 2600C, H2 auxiliary gas: 40 ml/min, not air: 400 ml/min, the make up He: 40 ml/min.
Tested concentration of free fatty acids in oil plants and animals in order to apply appropriate procedures for oil and fat metabolism, plant into methyl esters of fatty acids for analysis by GC/FID: application of the conversion of an alkaline catalyst phase for catfish fat, lard, soybean oil, sesame oil, peanut oil, coconut oil and metabolic processes in two stages, first stage acid catalyst used and the period after use alkaline catalysts for rubber seed oil and Jatropha oil.
Having studied and examined in a single and system modeling using quadratic regression model of factors affecting the efficiency of conversion of methyl ester fatty acid metabolism through a phase and two grease stage, plants, find the optimal conditions and metabolic performance of each process.
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