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탈지유의 Maillard 반응에 관한 연구 - 1 . 제 요인이 Casein 과 당(糖)의 Maillard 반응에 미치는 영향
문점동,임종우,이을희 경상대학교 축산진흥연구소 1989 畜産振興硏究所報 Vol.16 No.1
This experiment was carried out to study the characteristics of the Maillard reaction in skim milk by heat treatment. The mixture of casein and sugars(lactose, glucose, galactose, and fructose) were used as substrates. The effects of salts, pH, concentrations of sugars and casein, and reaction temperature and time upon the color development of melanoidins in reaction solution were investigated. The results obtained were as follows : 1. The color intensities of melanoidins were found to have considerable differences in caseinsugar mixture according to the kinds of salts used in this experiment. NaOH showed the highest reaction. 2. As the pH values of reaction solutions increased the color intensities of melanoidins increased in casein-sugar mixtures, expecially mixtures at above pH 8.5. 3. As the concentration of sugar increased, the color intensities of melanoidins in reaction increased. Whereas in above O.1M concentration of sugars were not found to have and differences. 4. As the concentrations of casein increased, the color intensities of melanoidins in reaction solution increased. 5. In casein-sugar mixture the color intensities of melanoidins showed significant dependence on reaction temperature and time. The activation energies and glucose, fructose, galactose and lactose were 10.75, 13.94, 15.91 and 16.89Kcal / M, respectively. 6. The color intensities of melanoidins for sugars test decreased in the order of fructose$gt;galactose$gt;lactose$gt;glucose in casein-sugar mixture. Generally the pH values in casein-sugar mixtures showed the tendencies to decrease by heat treatment.
Methyl Thiouracil의 投與가 돼지의 肥育에 미치는 影響에 關한 硏究
文点東,林鍾佑 진주산업대학교 1970 論文集 Vol.5 No.-
This experiment was conducted to study the effects of Methyl thiouracil on fattening of 6 barrows at a litter Berkshire. Further the study was also made to investigate the possibility of practical use Methyl thiouracil in our farm village. The results obtained are summarized as follows: - (1) In daily gain the treatment 0.39 ㎏ has shown more high value than the control 0.25 ㎏ and a significant difference (P<0.05) was observed between the treatment and the control. In rate of gain the treatment 39.2% has also shown more high value than the control 27.4%. There are differences of the growth of body length and chest girth each other around 20 days, 10 days after beginning experiment. (2) In feed consumption the treatment and the control required each other 1. 64㎏, 1.81 ㎏ per head per day. In feed conversion the treatment and the control required 4.25 ㎏, 7.12 ㎏ per increasing 1 ㎏ body weight each other. (3) The treatment has shown more high net income with 45.62 won than the control 12.92 won daily. (4) The above mentioned results of this experiment show that Methyl thiouracil has the practical effect on fattening of swine. In accordance it, it is possible that a farm-house may use Methyl thiouracil.