 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Effectiveness of Household Chemicals in Residue Removal of Methomyl and Carbaryl Pesticides on Chinese-Kale) ผู้เขียน: พงศ์ชัย กลิ่นหอม, Anek Halee, Sasithorn Methawiwat สื่อสิ่งพิมพ์:pdf AbstractLeafy Chinese-Kale treated with methomyl and carbaryl was subjected to various chemical aqueous washes to determine the reduction of pesticides. All washing solutions, prepared from chemical stuffs available in household, consisted of 0.9% NaCl, 0.1% NaHCO3, 0.001% KMnO4 and 0.1% acetic acid. Filtrated water was used as control. After 15 min of washing procedure, the reduction of pesticide residues were determined by high-pressure liquid chromatography analysis and shown to have a lesser extent in methomyl compared to carbaryl. Methomyl also showed lower level of degradation in the washing solutions (2.6 to 21%) compared to carbaryl (20 to 62%). These may due to the difference of behavior and physiochemical properties between the pesticides. Variations in the degree of reduction in each pesticide were observed with the washing solution treatments. Among the washing solutions, the 0.001% KMnO4 performed the most effective in residue reduction (48 and 93 % in methomyl and carbaryl, respectively). This may due to the oxidative property of this material. In 0.9% NaCl, 0.1% NaHCO3 and 0.1% acetic acid washing solutions, the residue reductions were 39, 43 and 43% for methomyl; 91, 91 and 90% for carbaryl, respectively. In water, the reduction of methomyl and carbaryl were 38 and 88%, respectively. The results showed vegetable wash with solutions prepared from the chemical stuffs to be more effective in reducing pesticides than water alone. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effect of Refeeding on Lipid Metabolism in Kamphaengsaen Beef Heifers) ผู้เขียน:พงศ์ชัย กลิ่นหอม,  ดร.กัญจนะ มากวิจิตร์, ศาสตราจารย์ , ดร.ประวีร์ วิชชุลตา, รองศาสตราจารย์ , ดร.ศรเทพ ธัมวาสร, ศาสตราจารย์ , ดร.ชัยภูมิ บัญชาศักดิ์, ศาสตราจารย์ , ดร.อาภัสสรา ชูเทศะ, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractFive Kamphaengsaen (Charolais Crossbred) beef heifers were used to study lipid utilization during a 30-day controlled-feed realimentation period. Dry matter intake was adjusted according to individual metabolic body weight to provide the same energy intake as in the full feeding period. At the end of refeeding period the heifers showed better feed conversion ratio. Back fat thickness increased and returned to the same level as before restriction (0.284 vs. 0.262 cm.). The loin eye area exhibited slight accretion (less than 1% of the loin eye area at the onset of realimentation). Adipose tissue lipolytic rate remained elevated and the heifers also exhibited high rate of lipoprotein export as in the previous restriction period. Plasma albumin concentration was higher than the base-line concentration. NEFA concentration declined and tended to be less than the base line concentration level (86vs.127? mol/l). Because the high lipolytic rate occurred at this period, less circulating NEFA concentration was suggested for the high NEFA uptake by the peripheral tissue. BHBA and glucose concentrations were rebounded toward the base-line concentrations. PUN concentration markedly declined with the level lower P<0.05 than the base-line concentration (9.2 vs.10.8 mg/dl).This might result from the decreasing rate of catabolism of labile protein reserved. In conclusion, it was found that during repletion, the heifers utilized fat as the essential source of fuel and decreased proteolysis in the body. |
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