The technic of rose otto production from Qinwei rose（Rosa damascena Mill cv. “Kazanluk”） was studied. The reflux distillation technic with two different distillation velocities in was a superior method to produce ...The technic of rose otto production from Qinwei rose（Rosa damascena Mill cv. “Kazanluk”） was studied. The reflux distillation technic with two different distillation velocities in was a superior method to produce otto. The quality of the otto was high in conformity with ISO 9842 and БДС 653. The optimum process was as follows: fresh flower, salting, distillation, segregation and product finally. The principal technic parameters were as follows∶salting （flower∶salt=4∶1,w/w） 1～25 d; 1∶4 of flower to water during distillation; distillation at 100 L·h-1 for 3 h first, and 125 L·h-1 for 1 h subsequently.展开更多
目的:探讨响应面法优化苦水玫瑰精油提取后废弃物中总黄酮的分离纯化工艺及抗氧化活性,为回收利用苦水玫瑰精油提取后废弃物中的总黄酮提供依据。方法:通过静态实验研究D101型树脂对苦水玫瑰精油提取后废弃物中黄酮类化合物的吸附和解...目的:探讨响应面法优化苦水玫瑰精油提取后废弃物中总黄酮的分离纯化工艺及抗氧化活性,为回收利用苦水玫瑰精油提取后废弃物中的总黄酮提供依据。方法:通过静态实验研究D101型树脂对苦水玫瑰精油提取后废弃物中黄酮类化合物的吸附和解析能力,之后在单因素动态实验的基础上,采用响应面法优化苦水玫瑰精油提取后废弃物中总黄酮分离纯化工艺参数。在此基础上,以维生素C(VC)为对照,研究纯化后总黄酮对ABTS+·、DPPH·、·OH的清除能力。结果:静态实验吸附量1.83 mg/g,吸附率86.10%,洗脱率88.07%,说明D101型树脂对苦水玫瑰精油提取后废弃物中黄酮类化合物有较好的吸附和解析能力;响应面法优化的动态吸附工艺参数为上样液p H2.12、上样液质量浓度10.4 mg/L、上样液流速1.72 m L/min,吸附率为95.06%;用60 m L无水乙醇溶液洗脱,解析率达到98.30%;分离纯化后的总黄酮纯度可达5.651%;纯化后的总黄酮对ABTS+·、DPPH·、·OH清除作用的IC50分别为:0.03、0.1、8μg/m L,最大清除率分别为:98.96%、89.76%、65.45%,可以看出废弃物中总黄酮具有较好的抗氧化活性。展开更多
采用超声波萃取法提取红玫瑰精油。在单因素试验基础上,运用正交试验设计对红玫瑰精油的提取工艺进行优化,考察了超声频率、料液比、原料粒度、超声萃取时间对红玫瑰精油提取率的影响。结果表明,影响红玫瑰精油提取率的因素从大到小依...采用超声波萃取法提取红玫瑰精油。在单因素试验基础上,运用正交试验设计对红玫瑰精油的提取工艺进行优化,考察了超声频率、料液比、原料粒度、超声萃取时间对红玫瑰精油提取率的影响。结果表明,影响红玫瑰精油提取率的因素从大到小依次为超声频率、原料粒度、超声波萃取时间、料液比;最佳优化工艺条件为超声频率60 k Hz、料液比1 g∶50 m L、原料粒度80目、超声波萃取时间30 min,该条件下玫瑰精油得率可达0.61%。展开更多
文摘The technic of rose otto production from Qinwei rose（Rosa damascena Mill cv. “Kazanluk”） was studied. The reflux distillation technic with two different distillation velocities in was a superior method to produce otto. The quality of the otto was high in conformity with ISO 9842 and БДС 653. The optimum process was as follows: fresh flower, salting, distillation, segregation and product finally. The principal technic parameters were as follows∶salting （flower∶salt=4∶1,w/w） 1～25 d; 1∶4 of flower to water during distillation; distillation at 100 L·h-1 for 3 h first, and 125 L·h-1 for 1 h subsequently.
文摘目的:探讨响应面法优化苦水玫瑰精油提取后废弃物中总黄酮的分离纯化工艺及抗氧化活性,为回收利用苦水玫瑰精油提取后废弃物中的总黄酮提供依据。方法:通过静态实验研究D101型树脂对苦水玫瑰精油提取后废弃物中黄酮类化合物的吸附和解析能力,之后在单因素动态实验的基础上,采用响应面法优化苦水玫瑰精油提取后废弃物中总黄酮分离纯化工艺参数。在此基础上,以维生素C(VC)为对照,研究纯化后总黄酮对ABTS+·、DPPH·、·OH的清除能力。结果:静态实验吸附量1.83 mg/g,吸附率86.10%,洗脱率88.07%,说明D101型树脂对苦水玫瑰精油提取后废弃物中黄酮类化合物有较好的吸附和解析能力;响应面法优化的动态吸附工艺参数为上样液p H2.12、上样液质量浓度10.4 mg/L、上样液流速1.72 m L/min,吸附率为95.06%;用60 m L无水乙醇溶液洗脱,解析率达到98.30%;分离纯化后的总黄酮纯度可达5.651%;纯化后的总黄酮对ABTS+·、DPPH·、·OH清除作用的IC50分别为:0.03、0.1、8μg/m L,最大清除率分别为:98.96%、89.76%、65.45%,可以看出废弃物中总黄酮具有较好的抗氧化活性。
文摘采用超声波萃取法提取红玫瑰精油。在单因素试验基础上,运用正交试验设计对红玫瑰精油的提取工艺进行优化,考察了超声频率、料液比、原料粒度、超声萃取时间对红玫瑰精油提取率的影响。结果表明,影响红玫瑰精油提取率的因素从大到小依次为超声频率、原料粒度、超声波萃取时间、料液比;最佳优化工艺条件为超声频率60 k Hz、料液比1 g∶50 m L、原料粒度80目、超声波萃取时间30 min,该条件下玫瑰精油得率可达0.61%。
