玉米芯降解物抗氧化能力的研究

Antioxidant activity of degradation products from corn cob

摘要: 以经过碱解、酶解反应后剩余的玉米芯残渣为原料,采用酸降解残渣,研究降解物的抗氧化能力。通过测定其清除DPPH自由基、羟自由基、超氧阴离子自由基的能力,及还原能力和油脂氧化稳定性的能力,探讨其抗氧化能力。结果表明,玉米芯降解物的抗氧化活性优于对香豆酸。

Abstract: The corn cob residue, which was obtained after successively treated with alkali solution and xylanase, was degraded using hydriodic acid.The antioxidant activity of the degradation products were estimated based on the scavenging capacity for DPPH, hydroxyl radicals (·OH) , superoxide anion radicals (O-2·) , reducing power and antioxidant capacity in lard and peanut oil.The results showed that the degradation products had higher antioxidant activity than p-coumaric acid.