A edible red pigment was extracted from the fruit of Hylocereus Costaricensis (Weber) Britt for the first time.A study was conducted to exam technological conditions of extracting the red pigment,including selection o...A edible red pigment was extracted from the fruit of Hylocereus Costaricensis (Weber) Britt for the first time.A study was conducted to exam technological conditions of extracting the red pigment,including selection of soaker and soaking dose,the effect of soaking temperature,pH and soaing time on extracting rate.The results showed that the pigment is soluble in water and the suitable soaker is the ethanol aqueous solution of 70%,and that the extraction should be undertaken by two time of solvent at room temperature for five hours.展开更多
文摘A edible red pigment was extracted from the fruit of Hylocereus Costaricensis (Weber) Britt for the first time.A study was conducted to exam technological conditions of extracting the red pigment,including selection of soaker and soaking dose,the effect of soaking temperature,pH and soaing time on extracting rate.The results showed that the pigment is soluble in water and the suitable soaker is the ethanol aqueous solution of 70%,and that the extraction should be undertaken by two time of solvent at room temperature for five hours.
文摘探讨水性涂料用氧化铁红色浆体系中颜料含量、预分散转速、研磨次数、分散剂及增稠剂等对其分散稳定性的影响,确定了该体系的颜料含量、制备工艺以及相关助剂的种类和用量。当颜料含量为60%、颜料分散转速为3000 r/min时,选用分散剂SN-Dispersant 5034和增稠剂SMP-HV2与DSX AS 1130,研磨4次后,所制得的色浆具有良好的贮存稳定性,以此色浆制备的铁红色漆具有良好的分散性能和贮存稳定性。
