T/TFHT C028-2019 Glycyrrhizin Product Standards

Scope

Main Technical Content: 3.1 Licorice root is cylindrical, 25–100 cm long, and 0.6–3.5 cm in diameter. The outer bark is unevenly firm. The surface is reddish-brown or gray-brown, with prominent longitudinal wrinkles, grooves, lenticels, and sparse fine root marks. The texture is firm, and the cross-section shows slight fibrousness, yellowish-white, and powdery, with distinct cambium rings and radial striations, some with cracks. The rhizome is cylindrical, with bud marks on the surface and a central pith in the cross-section. It has a faint odor and a sweet, distinctive taste. 3.2 Licorice tablets are thick slices of an oval or round shape. The outer bark is reddish-brown or gray-brown, with longitudinal wrinkles. The cross-section shows slight fibrousness, with a yellowish-white center and distinct radial striations and cambium rings. The texture is firm and powdery. It has a faint odor and a sweet, distinctive taste. 4. Technical Requirements 4.1 Raw Material Requirements - The raw materials must meet the specifications in Table 1. - Table 1: Quality Indicators for Licorice Raw Materials - Moisture: ≤12.0% - Total ash: ≤7.0% - Acid-insoluble ash: ≤2.0% - Heavy metals and harmful elements: - Lead: ≤5 mg/kg - Cadmium: ≤0.3 mg/kg - Arsenic: ≤2 mg/kg - Mercury: ≤0.2 mg/kg - Copper: ≤20 mg/kg - Organochlorine pesticide residues: - Total hexachlorobenzene (sum of α-BHC, β-BHC, γ-BHC, and δ-BHC): ≤0.2 mg/kg - Total DDT (sum of pp'-DDE, pp'-DDD, op'-DDT, and pp'-DDT): ≤0.2 mg/kg - Pentachloronitrobenzene: ≤0.1 mg/kg - Content determination: - Licorice glycoside (C21H22O9): ≥0.50% - Glycyrrhizic acid (C42H62O16): ≥2.0% - Sensory evaluation: - The root is cylindrical, 25–100 cm long, and 0.6–3.5 cm in diameter. The outer bark is unevenly firm. The surface is reddish-brown or gray-brown, with prominent longitudinal wrinkles, grooves, lenticels, and sparse fine root marks

Development Information

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