Abstract:

Astragalus membranaceus-Fagopyrum tataricum composite chewable tablets were prepared using Astragalus membranaceus and Fagopyrum tataricum as main raw materials, supplemented with microcrystalline cellulose, maltodextrin, and erythritol. Based on single-factor experiments, an orthogonal optimization test was conducted with key factors of the ratio of Astragalus membranaceus-Fagopyrum tataricum composite superfine powder, sweetener (erythritol) addition, composite filler (microcrystalline cellulose and maltodextrin) addition and volume fraction of moistening agent (ethanol). Palatability, flavor, appearance, and color were used as sensory evaluation indicators, and fuzzy mathematics method was used for comprehensive evaluation. The optimal process for determining the product was a 4∶5 ratio of Astragalus membranaceus-Fagopyrum tataricum composite superfine powder, 17% erythritol addition, 38% composite filler addition, and 75% ethanol volume fraction. The resulting tablets exhibited optimal quality with a fuzzy comprehensive score of 88.80, containing 96.88% dry matter, Pb and As contents below 0.20 mg·kg^-1, undetectable sulfur dioxide, Salmonella, Staphylococcus aureus, and coliforms, along with 590 CFU·g^-1 lactic bacteria. The chewable tablets demonstrated delicate and smooth texture with moderate crispness, distinct herbal aroma of Astragalus membranaceus and characteristic fragrance of Fagopyrum tataricum in harmonious flavor profile, uniform and dense microstructure, intact smooth surface, even color distribution without chromatic aberration, confirming their comprehensive superior quality.

Key words: Astragalus membranaceus, Fagopyrum tataricum, chewable tablets, fuzzy mathematics