T/SDAHA 005-2024 Veterinary Traditional Chinese Medicine Materials - Poria Cocos

Scope

Main Technical Content: 1. **Morphological Characteristics**: Based on the quality standards for Poria cocos in the Second Edition of the Veterinary Pharmacopoeia of the People's Republic of China and the actual morphological characteristics of seven batches of Poria cocos from different production regions such as Hubei, Hunan, Henan, Anhui, Guizhou, Yunnan, Guangxi, and Zhejiang, the characteristics were determined as follows: - **Poria cocos pieces**: Shaped like spheres, ovals, or flattened masses, with varying sizes. The outer skin is thick and rough, brownish-brown to blackish-brown, with visible wrinkles. The flesh is firm and solid, with a granular section when cut, and some have cracks. The outer layer is pale brown, while the inner part is white or slightly reddish. Some contain pine roots. - **Poria cocos slices**: Sliced Poria cocos, with varying sizes and thicknesses. They are white, pale red, or pale brown. - **Poria cocos flakes**: Sliced Poria cocos, with varying thicknesses. They are white, pale red, or pale brown. 2. **Microscopic Identification of Hyphae**: Determined according to the "Identification" section (1) of the Second Edition of the Veterinary Pharmacopoeia of the People's Republic of China. Three batches of Poria cocos from different production regions all showed colorless irregular granular masses and branching masses, which gradually dissolved when mixed with water-chloral hydrate solution. The hyphae were colorless or pale brown, slender, slightly curved, and branched, with a diameter of 3–8 μm (some up to 16 μm). See Figure 1 for microscopic features. 3. **Polysaccharide Identification**: Determined according to the "Identification" section (2) of the Second Edition of the Veterinary Pharmacopoeia of the People's Republic of China. Three batches of Poria cocos powder were each mixed with 1 drop of potassium iodide iodine solution, all showing deep red staining. 4. **Identification of Poria cocos**: Determined

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