An aqueous enzymatic extraction method was used to extract oil from oil-tea camellia seed(Camellia oleifera).The factors influencing the yield rate such as enzyme kind,addition methods,concentration of enzyme,enzymati...An aqueous enzymatic extraction method was used to extract oil from oil-tea camellia seed(Camellia oleifera).The factors influencing the yield rate such as enzyme kind,addition methods,concentration of enzyme,enzymatic hydrolysis time and temperature,and ration of solid to liquid were investigated.The results are as following: The acid protease and cellulase have higher oil yield rate than the other treatments,but there is no significant difference between acid protease and cellulase(P<0.05).By directly adding acid protease to seed slurry of oil-tea camellia seed,more oil yield rate can be gotten than those treatments which added acid protease to ground slurry or filtered ground slurry.By single factor experiment,the optimum conditions of enzymolysis are: the concentration of acid protease,0.1 %(w/w);the enzymolysis temperature and time,55 ℃ and 3 h,respectively;and the ratio of solid to liquid,1∶10.展开更多
研究了西方蜜蜂Apismellifera 6亚种———浙农大 1号意蜂 (ZND A .m .ligustica)、东北黑蜂 (A .m .ssp .)、卡尼鄂拉蜂 (A .m .carnica)、喀尔巴阡蜂 (A .m .carpatica)、高加索蜂 (A .m .caucasica)和乌克兰蜂 (A .m .acervorum)苹...研究了西方蜜蜂Apismellifera 6亚种———浙农大 1号意蜂 (ZND A .m .ligustica)、东北黑蜂 (A .m .ssp .)、卡尼鄂拉蜂 (A .m .carnica)、喀尔巴阡蜂 (A .m .carpatica)、高加索蜂 (A .m .caucasica)和乌克兰蜂 (A .m .acervorum)苹果酸脱氢酶Ⅱ的基因型频率、基因频率和杂合纯合度。浙农大 1号意蜂、喀尔巴阡蜂和高加索蜂的纯合度较高 ,但浙农大 1号意蜂等位基因c频率最高 ,喀尔巴阡蜂等位基因b频率最高 ,高加索蜂等位基因a频率最高 ;东北黑蜂、卡尼鄂拉蜂和乌克兰蜂是高度杂合的亚种 ,但东北黑蜂等位基因a、b、c的频率差异较小 ,卡尼鄂拉蜂和乌克兰蜂主要存在a、c两个等位基因 ,b出现频率很小 ;6亚种的基因型频率、基因频率和杂合纯合度都有极显著差异。这些差异将从遗传和生化角度为西方蜜蜂 6个亚种的鉴别提供依据。展开更多
文摘An aqueous enzymatic extraction method was used to extract oil from oil-tea camellia seed(Camellia oleifera).The factors influencing the yield rate such as enzyme kind,addition methods,concentration of enzyme,enzymatic hydrolysis time and temperature,and ration of solid to liquid were investigated.The results are as following: The acid protease and cellulase have higher oil yield rate than the other treatments,but there is no significant difference between acid protease and cellulase(P<0.05).By directly adding acid protease to seed slurry of oil-tea camellia seed,more oil yield rate can be gotten than those treatments which added acid protease to ground slurry or filtered ground slurry.By single factor experiment,the optimum conditions of enzymolysis are: the concentration of acid protease,0.1 %(w/w);the enzymolysis temperature and time,55 ℃ and 3 h,respectively;and the ratio of solid to liquid,1∶10.
