摘要
在用国产中空纤维膜超滤山楂汁的试验研究中,重点考察了平均操作压力、操作温度、主流液速度、加工时间等参数对透过液流量的影响,并建立了相应的拟合数学方程。结果表明,提高平均操作压力和操作温度,可使透过液流量增大,但都应有限制。超滤能除去山楂汁中大部分易引起沉淀、混浊的物质,超滤后山楂汁中的营养成分和原有风味能基本保留下来。
A study on hawthorn juice clarification by ultrafiltration(UF)with do- mestic hollow fibers is presented.The experiment mainly inspects the effect of op- eration pressure,operation temperature,processing time and juice recirculation speed on permeate flux.The regression equations are developed accordingly.It indi- cates that the permeate flux increases with increasing operation pressure and opera- tion temperature,but the pressure and temperature are restricted within certain lim- its.The effect of UF on hawthorn juice is evaluated,that is UF can obtain a stable clearing hawthorn juice,remove sediment and microbes,and retain hawthorn juice nutrition elements and flavor basically.
关键词
超滤
山楂汁
澄清
中空纤维膜
ultrafiltration
hawthorn juice
clarification
hollow fiber
