2024年7月18日 星期一 19:43:55

淀粉浆工艺在糖衣片包衣中的应用

    在中西药片剂生产过程中,包衣是一道十分关键的工序。过去一般按照传统的胶糖层、粉衣层、糖衣层、有色糖衣层、打光等顺序来完成。在包糖粉层时,过去方法为在糖衣锅内滚动的药片中加入适量的温热糖浆,再撒入适量滑石粉,反复多次,使之附着于片剂表面。这种方法一旦糖浆和滑石粉比例不适当,易发生片剂表面附着不匀,使之凹凸不平,如果片芯硬度较差的情况下,由于片剂互相撞击掉下的碎药渣与干滑石粉附着于片剂表面,出现黑点造成质量下降。尤其是使用干滑石粉,形成大量粉尘(尽管有排尘设备,但并不能完全排除)因而造成环境污染,影响卫生条件,并给操作人员健康带来危害。 
    为此,我们经过反复实验,在包粉衣层中应用了液粉浆工艺。其方法为将温度适宜的糖浆与滑石粉置于同一容器中高速搅拌均匀,装入保温桶内备用(液粉浆),糖浆浓度为75%,糖浆与滑石粉比例为(5:2),以1000mm糖衣锅为例,投入片芯50kg开始每次加入2000ml液粉浆,以后逐渐递减,至完成本道工序。 
    该项工艺的优点是:①控制了糖浆和滑石粉的比例,用量合理。②增加了对片剂的附着力,提高了产品质量,使片剂表面光洁,平滑。③粉尘污染比原工艺降低了80%,操作人员健康得到保护。④缩短了操作时间,原工艺需12小时完成全过程包衣,新工艺只需8—9小时。⑤节约了大量辅助材料,降低了生产成本。因此该项工艺值得推广和利用。 
 
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