为高效地提取桑叶黄酮,采用正交试验法和响应面法就提取时间、提取温度、乙醇浓度和液料比4个因素进行桑叶黄酮提取工艺的优化.正交优化法所得最佳提取工艺为:提取温度60℃、提取时间60 min、乙醇浓度50%和料液比100 m L/g,此条件下桑...为高效地提取桑叶黄酮,采用正交试验法和响应面法就提取时间、提取温度、乙醇浓度和液料比4个因素进行桑叶黄酮提取工艺的优化.正交优化法所得最佳提取工艺为:提取温度60℃、提取时间60 min、乙醇浓度50%和料液比100 m L/g,此条件下桑叶黄酮的得率为4.53%.响应面优化法所得最佳提取工艺为:提取温度68℃、提取时间40 min、乙醇浓度52%和液料比86 m L/g,此条件下桑叶黄酮得率为4.71%,而理论预测值为4.64%.结果表明:响应面法优化的工艺条件下得到的桑叶黄酮量高于正交试验法,生产能耗也低于后者;并且响应面法建立的优化模型也能较好地预测桑叶黄酮的提取率.展开更多
In order to cultivate high yield with good quality Ginkgo biloba leaf-producing plantation, coppice management of 1,2,3-year-old Dafuzhi seedling at different stump heights (or top bud pruning) were taken and some phy...In order to cultivate high yield with good quality Ginkgo biloba leaf-producing plantation, coppice management of 1,2,3-year-old Dafuzhi seedling at different stump heights (or top bud pruning) were taken and some physiological and biochemical indexes and yield of Ginkgo biloba leaves were determined on May 15 and September 11. The results showed that the chlorophyll content, net photosynthetic rate, transpiration rate and water contents of all treatments and the total flavonoid concentration of some treatments were higher than those of CK; Leaf yield and total flavonoid yield per plant of some treatments were higher than those of CK at the later stage of the year.展开更多
按照江苏省中药材种植基地的平均施肥水平,选用当地常用的猪粪、鸡粪、菜籽饼、无机肥为供试肥料,进行菊花盆栽试验,研究不同肥料对菊花(Chrysanthemum m orifoliumRam at.)产量及有效成分含量的影响。结果表明:施肥可改善菊花的植物学...按照江苏省中药材种植基地的平均施肥水平,选用当地常用的猪粪、鸡粪、菜籽饼、无机肥为供试肥料,进行菊花盆栽试验,研究不同肥料对菊花(Chrysanthemum m orifoliumRam at.)产量及有效成分含量的影响。结果表明:施肥可改善菊花的植物学性状,使菊花生物量显著增加;施用猪粪、鸡粪、菜籽饼等有机肥能显著提高菊花的总黄酮含量和绿原酸含量,有效改善菊花品质,其中以菜籽饼的效果最好,猪粪次之。展开更多
文摘为高效地提取桑叶黄酮,采用正交试验法和响应面法就提取时间、提取温度、乙醇浓度和液料比4个因素进行桑叶黄酮提取工艺的优化.正交优化法所得最佳提取工艺为:提取温度60℃、提取时间60 min、乙醇浓度50%和料液比100 m L/g,此条件下桑叶黄酮的得率为4.53%.响应面优化法所得最佳提取工艺为:提取温度68℃、提取时间40 min、乙醇浓度52%和液料比86 m L/g,此条件下桑叶黄酮得率为4.71%,而理论预测值为4.64%.结果表明:响应面法优化的工艺条件下得到的桑叶黄酮量高于正交试验法,生产能耗也低于后者;并且响应面法建立的优化模型也能较好地预测桑叶黄酮的提取率.
文摘In order to cultivate high yield with good quality Ginkgo biloba leaf-producing plantation, coppice management of 1,2,3-year-old Dafuzhi seedling at different stump heights (or top bud pruning) were taken and some physiological and biochemical indexes and yield of Ginkgo biloba leaves were determined on May 15 and September 11. The results showed that the chlorophyll content, net photosynthetic rate, transpiration rate and water contents of all treatments and the total flavonoid concentration of some treatments were higher than those of CK; Leaf yield and total flavonoid yield per plant of some treatments were higher than those of CK at the later stage of the year.
文摘按照江苏省中药材种植基地的平均施肥水平,选用当地常用的猪粪、鸡粪、菜籽饼、无机肥为供试肥料,进行菊花盆栽试验,研究不同肥料对菊花(Chrysanthemum m orifoliumRam at.)产量及有效成分含量的影响。结果表明:施肥可改善菊花的植物学性状,使菊花生物量显著增加;施用猪粪、鸡粪、菜籽饼等有机肥能显著提高菊花的总黄酮含量和绿原酸含量,有效改善菊花品质,其中以菜籽饼的效果最好,猪粪次之。
