主要研究降低中药萃余液粘度和乳酸细菌发酵制备饲料添加剂工艺方法。比较3种预处理剂(预处理剂A、B和C)对萃余液粘度降低效果,在35℃保温条件下,预处理剂B和C效果最好,等比例混合处理后粘度下降到1000 m Pa·s左右,流动性好。处理...主要研究降低中药萃余液粘度和乳酸细菌发酵制备饲料添加剂工艺方法。比较3种预处理剂(预处理剂A、B和C)对萃余液粘度降低效果,在35℃保温条件下,预处理剂B和C效果最好,等比例混合处理后粘度下降到1000 m Pa·s左右,流动性好。处理后的萃余液经植物乳杆菌发酵产生大量酸类物质,乳酸含量达到111 mmol/g以上,作为饲料添加剂具有中药和微生物制剂双重特性。展开更多
Synergistic extraction has been proven to enhance extractability and selectivity for the separation of cadmium and zinc from magnesium and calcium in the sulfuric acid medium with Mextral V10 and Mextral 622H(aromatic...Synergistic extraction has been proven to enhance extractability and selectivity for the separation of cadmium and zinc from magnesium and calcium in the sulfuric acid medium with Mextral V10 and Mextral 622H(aromatic hydroxamic)mixtures diluted in DT100.Mixtures of Mextral V10 and 622H are highly selective for Zn and Cd over Mg and Ca compared with the single Mextral V10,resulting in larger synergistic shifts for zinc and cadmium with theΔpH_(50(Zn–Ca))values increasing substantially from0.83 to 1.73 pH units andΔpH_(50(Cd–Ca))values increasing from 0.63 to 2.13 p H units.The aqueous to organic ratio(A/O ratio),the saponification ratio of Mextral V10 and extracting agent concentration were studied on the effect of metal ions extraction,which helped to increase the organic capacity of metal extraction.The Mc Cabe-Thiele plot for Cd and Zn extraction with 5%(volume fraction)Mextral V10 and 5%Mextral 622H extractants mixture indicate the necessity of only one theoretical stages at an A/O ratio of 1.5:1.One stage extraction simulation test conducted at pH 6.50 shows that Cd and Zn reach the extraction of 99.6%and 97.9%,respectively,and only low levels of magnesium and calcium are extracted in the organic phase.The extracted Zn^(2+)or Cd^(2+)-organic species are Zn(A_1)(A_2)or Cd(A_1)(A_2)with the mixture system by slope analysis.展开更多
文摘主要研究降低中药萃余液粘度和乳酸细菌发酵制备饲料添加剂工艺方法。比较3种预处理剂(预处理剂A、B和C)对萃余液粘度降低效果,在35℃保温条件下,预处理剂B和C效果最好,等比例混合处理后粘度下降到1000 m Pa·s左右,流动性好。处理后的萃余液经植物乳杆菌发酵产生大量酸类物质,乳酸含量达到111 mmol/g以上,作为饲料添加剂具有中药和微生物制剂双重特性。
基金Projects(20151BBG70009,20151BBE50115)supported by Jiangxi Science and Technology Projects,ChinaProjects(2014-YYB-06,2014-YYB-11)supported by Scientific Research and Development Project of Jiangxi Academy of Sciences,China
文摘Synergistic extraction has been proven to enhance extractability and selectivity for the separation of cadmium and zinc from magnesium and calcium in the sulfuric acid medium with Mextral V10 and Mextral 622H(aromatic hydroxamic)mixtures diluted in DT100.Mixtures of Mextral V10 and 622H are highly selective for Zn and Cd over Mg and Ca compared with the single Mextral V10,resulting in larger synergistic shifts for zinc and cadmium with theΔpH_(50(Zn–Ca))values increasing substantially from0.83 to 1.73 pH units andΔpH_(50(Cd–Ca))values increasing from 0.63 to 2.13 p H units.The aqueous to organic ratio(A/O ratio),the saponification ratio of Mextral V10 and extracting agent concentration were studied on the effect of metal ions extraction,which helped to increase the organic capacity of metal extraction.The Mc Cabe-Thiele plot for Cd and Zn extraction with 5%(volume fraction)Mextral V10 and 5%Mextral 622H extractants mixture indicate the necessity of only one theoretical stages at an A/O ratio of 1.5:1.One stage extraction simulation test conducted at pH 6.50 shows that Cd and Zn reach the extraction of 99.6%and 97.9%,respectively,and only low levels of magnesium and calcium are extracted in the organic phase.The extracted Zn^(2+)or Cd^(2+)-organic species are Zn(A_1)(A_2)or Cd(A_1)(A_2)with the mixture system by slope analysis.
