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    • 9. 发明授权
    • Process for preparing a sugar and starch free spray-dried vitamin C
powder containing 90 percent ascorbic acid
    • 制备含有90%抗坏血酸的不含糖和淀粉的喷雾干燥维生素C粉末的方法
    • US4533674A
    • 1985-08-06
    • US544608
    • 1983-10-24
    • Douglass N. SchmidtJeffrey L. FinnanRudolph E. Lisa
    • Douglass N. SchmidtJeffrey L. FinnanRudolph E. Lisa
    • A61K9/20A61K31/375A61K31/365
    • A61K31/375A61K9/2009A61K9/2054
    • The subject invention relates to a vitamin C powder prepared by (a) spray drying an aqueous slurry of ascorbic acid and binder in the presence of an absorbent in amounts such that the resulting powder will contain at least 90 percent by weight of ascorbic acid, no more than 9 percent by weight of binder, from 0.2 to 2 percent by weight of absorbent; and blending from 0.2 to 5 percent by weight of a lubricant into the powder prepared by step (a). Preferably microcrystalline cellulose and mixtures of microcrystalline cellulose and hydroxypropylmethycellulose are used as the binder.The resulting sugar and starch free vitamin C powder prepared by this process will be free flowing, have an ascorbic acid content of at least 90 percent by weight, be color stable under use conditions, will contain a lubricant, and is directly compressible into tablets which have acceptable hardness, friability, color stability, and disintegration times.
    • 本发明涉及通过以下方法制备的维生素C粉末:(a)在吸收剂存在下将抗坏血酸和粘合剂的水性浆料喷雾干燥,使得所得粉末将含有至少90重量%的抗坏血酸,否 约9重量%的粘合剂,0.2-2重量%的吸收剂; 并将0.2至5重量%的润滑剂混合到由步骤(a)制备的粉末中。 优选使用微晶纤维素和微晶纤维素和羟丙基甲基纤维素的混合物作为粘合剂。 通过该方法制备的所得糖和无淀粉的维生素C粉末将是自由流动的,抗坏血酸含量至少为90重量%,在使用条件下颜色稳定,将含有润滑剂,并且可直接压片成片 具有可接受的硬度,脆性,颜色稳定性和崩解时间。