ABSTRACT
OBJECTIVE:To evaluate the quality of Bombyx batryticatus medicinal materials in the market by multi-index,and provide reference for clinical rational drug use. METHODS:Referring to the Chinese Pharmacopoeia (2015 edition,part 1),the appearance characters of samples were observed,moisture and the total ash were detected,Fourier transform infrared spectroscopy was adopted to identify the medicinal materials,UV-Visible spectrophotometry and potassium permanganate titration were respec-tively used to determine the contents of active ingredient protein and ammonium oxalate. RESULTS:The moisture ranged in 2.84%-4.07%(RSD<5%,n=3),total ash in 7.79%-34.32%(RSD<5%,n=3),UV and FTIR spectra were basically similar, and both can reflect the characteristic peaks of protein peptides. Protein content ranged in 29.87%-57.19%(RSD<0.5%,n=3), ammonium oxalate content in 0.27%-4.77%(RSD<5%,n=3). CONCLUSIONS:The 10 batches of samples are authentic and processed products,moisture fits the requirement in pharmacopoeia while total ash does not;and the main ingredient is protein pep-tides. However,effective protein polypeptide content shows great differences as well as ammonium oxalate.