CAJ | 학술논문

进行了α-生育酚在玉米油、大豆油和茶油中的抗氧化动力学研究。添加不同量的α-生育酚到纯化玉米油、大豆油和茶油中，进行Schaal 烘箱氧化实验，定期测定过氧化值和茴香胺值，并计算总氧化值。根据一阶动力学反应或零阶动力学反应所得回归系数可以得出，过氧化值、茴香胺值、总氧化值与氧化时间的拟合方程是成立的，且生成氢过氧化物的速率常数可代替油脂的氧化速率常数，从而得到在不同α-生育酚添加量下的油脂氧化速率常数。结果表明：当α-生育酚添加量低于最适添加量时，随着α-生育酚添加量升高，氧化速率常数会逐渐变小，表明α-生育酚的抗氧化效能不断增强。当α-生育酚添加量高于最适添加量后，随着α-生育酚添加量升高，氧化速率常数会逐渐增大直至大于空白样的氧化速率常数，表明α-生育酚的抗氧化效能不断减弱直至出现促氧化现象。因此，通过油脂氧化速率常数探究不同添加量的α-生育酚在玉米油、大豆油和茶油中的抗氧化效能是可行的。
진행료α-생육분재옥미유、대두유화다유중적항양화동역학연구。첨가불동량적α-생육분도순화옥미유、대두유화다유중，진행Schaal 홍상양화실험，정기측정과양화치화회향알치，병계산총양화치。근거일계동역학반응혹령계동역학반응소득회귀계수가이득출，과양화치、회향알치、총양화치여양화시간적의합방정시성립적，차생성경과양화물적속솔상수가대체유지적양화속솔상수，종이득도재불동α-생육분첨가량하적유지양화속솔상수。결과표명：당α-생육분첨가량저우최괄첨가량시，수착α-생육분첨가량승고，양화속솔상수회축점변소，표명α-생육분적항양화효능불단증강。당α-생육분첨가량고우최괄첨가량후，수착α-생육분첨가량승고，양화속솔상수회축점증대직지대우공백양적양화속솔상수，표명α-생육분적항양화효능불단감약직지출현촉양화현상。인차，통과유지양화속솔상수탐구불동첨가량적α-생육분재옥미유、대두유화다유중적항양화효능시가행적。
The antioxidation kinetics ofα-tocopherol in corn oil, soybean oil an d oil-tea camellia seed oil were studied. Different dosages of α -tocopherol were added into pure corn oil, soybean oil and oil-tea camellia seed oil, then Schaal oven oxidation experiment was conducted,and the peroxide values and p-anisidne values were determined regularly and total oxidation values were calculated. The regres-sion coefficient from first-order kinetics reaction or zero-order kinetics reaction indicated that the fitting equations of peroxide values, p-anisidne values and total oxidation values with oxidation time were es-tablished , and the rate constant of hydroperoxides compounds formation could substitute the oxidation rate constant of oil, thus the oxidation rate constants of oil added with different dosages ofα-tocopherol were obtained . The results indicated that the oxidation rate constant decreased gradually with the dosage ofα-tocopherol increasing when the dosage ofα-tocopherol was lower than the optimal dosage, which indica-ted that the antioxidant efficiency ofα-tocopherol was growing. On the contrary, the oxidation rate con-stant increased gradually until exceeding that of the blank with the dosage of α-tocopherol improving when the dosage of α-tocopherol was higher than the optimal dosage, which indicated that the antioxi-dant efficiency of α - tocopherol was weakening until prooxidation appeared. Therefore, it was feasible to explore the antioxidant efficiency of dif-ferent dosages of α-tocopherol in corn oil, soy-bean oil and oil-tea camellia seed oil through the oxidation rate constant.