[Study on processing for Rhizoma Pinelliae Praeparatum by comprehensive evaluation of multiple mark]

Area of Science:

• Traditional Chinese Medicine
• Pharmacology
• Chemical Engineering

Context:

• Rhizoma Pinelliae Praeparatum (Banxia) is a commonly used herb in Traditional Chinese Medicine.
• Its preparation involves processing to reduce toxicity and enhance efficacy.
• Existing processing methods lack optimization for efficiency and safety.

Purpose:

• To determine the optimal processing technology for Rhizoma Pinelliae Praeparatum.
• To reduce the toxicity of the processed herb.
• To shorten the processing time compared to conventional methods.

Summary:

• An L9(3(4)) orthogonal design was employed to investigate processing parameters including quick lime and Glycyrrhiza uralensis quantities, processing time, and temperature.
• Key chemical components (Calcium oxalate crystals, Guanosine, Glycyrrhizic acid) were quantified using RP-HPLC.
• Irritation tests on rabbit eyes assessed the safety of the processed products.

Impact:

• The optimized processing method significantly reduces toxicity.
• Optimal conditions identified: 48 hours processing time, 30°C temperature, 10g quick lime, and 15g Glycyrrhiza uralensis.
• This optimized method substantially shortens processing time compared to the Pharmacopoeia standard, improving efficiency in medicinal herb preparation.