Influences of methods of drying on total anthraquinones in Radix et Rhizoma Rhei Dispensing Granules / 中成药

ABSTRACT

AIM: To compare the influences of drying methods on Radix et Rhizoma Rhei in Dispensing Granu- les . METHODS: The vaccum and spray methods were studied by determination of total anthraquinones and the sum of aloe-emodin, rhein, emodin, chrysophanol and physcion. RESULTS: When in spray drying conditions re- lative density of extract was 1.06 - 1.10 (60 ?C) and entering wind temperature was at 140-150 ?C, outlet wind temperature was at 85-90 ?C. Radix et Rhizoma Rhei dispensing granules appearance was good, the total anthraquinones was destroyed least. CONCLUSION: Spray drying method for dispensinp granules has superiorily ever vaccum one.