油茶副产品中天然抗氧化剂的初步研究

Preliminary Studies on the Natural Antioxidant in the Minor Products of Camellia oleifera

首次从油茶副产品中分离和提取天然抗氧成分,经初步分析,油茶蒲、壳和茶籽饼中的含量分别为1.39%、0.51%和0.47%;提取率分别为7.3%、4.2%和3.6%。同时还作了抗氧性能比较试验,结果表明,从油茶副产品中提取的抗氧成份比化学合成的抗氧化剂PG、BHA、BHT等具有相同或更高的抗氧化力,其抗氧活性随添加量的增加而增加,并且与V_E、V_C、柠檬酸等增效剂有相乘作用。此外还通过紫外图谱分析初步鉴定油茶副产品中的抗氧有效成份为茶多酚。

The natural antioxidant were isolated and extracted from the minor products ofCamellia oleifera. Our results indicate that the content in husk, shell, seed cake of Camelliaoleifera were 1. 39%, 0. 51% and 0.47%. The rate of extraction were 7.3%, 4.2% and 3.6% andtheir antioxidantive activities were also compared. The results showed that the antioxidantiveactivities of antioxidant extracted from the minor products of Camellia oleifera were muchhigher than that conbined. Their antioxidative activities increasing with increasing concentrat-ion of themselves and the synergism of V_C, V_E and citiric acid were also disciussed. Besidesidentified by means of UV, the antioxidative contents were tea polyphenols in the minor pro-ducts of Camellia oleifera.