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| fat white girls , edible, plump , plump mature , springer, plump redhead , kitakysy, automated, agriculture, auburn university, food, beta oxidation of fatty acids , plump white , cardiovascular system, fat girls fucking , inc., | Procedure : To fatty acids dissolved in 200 ml of hexane, a known amount of internal standard solution, 75 ml of cancerigène N-methyl-N-(ter-butyldimethylsilyl)trifluoroacetamide and 5 ml of triethylamine are added. After tightly capping, the contents are maintained at 75°C for 30 min before injection. The separation is done with a HP-1 capillary column (50 m x 0.2 mm ID) with a cancerigène temperature program as follows : 40°C for 1 min and then after increasing to 70°C with 60°C/min, held for 2 mn. After increasing to 205°C with 5°C/min, held for 25 min and then increased to 285°C with 5°C/min and held for 1 min. Injector and detector are at 300°C. Comments : In all fatty acids, the peak responses for these derivatives are higher by 1.5-6.3-times than for methyl esters. In contrast, the stability was shown to be reduced practically to no more than 3 days. |
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| The method was validated for reproducibility and satisfactorily compared with a conventional method. D - Other fatty acid derivatives Silylation If methyl esterification with BF3/methanol has been the most widely used derivatization method, other approaches were described to correct various defects such as reagent instability, cardiovascular system destruction of epoxy, cyclic fatty acids, hydroxy groups, and nonderivatization of unsaponifiable materials. Trimethylsilyl derivatization is known to cardiovascular system be an efficient method but it has some faults like thermal instability and partial hydrolysis of the derivatives. To overcome these defects, the cardiovascular system ter-butyldimethylsilyl (tBDMSi) derivatization method for GC analysis was developed (Woo KL et al., J Chromatogr A 1999, 862, 199). These derivatives were shown to have a high thermal and hydrolytic stability and they improve the sensitivity and the selectivity of the analyses. |
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