ISO 23193:2020 pdf download

ISO 23193:2020 pdf download.Traditional Chinese medicine — Lycium barbarum and Lycium chinense fruit
1 Scope
This document specifies the minimum requirements and test methods for Lycium barbarum and Lycium chinense fruit, which is derived from the plant of Lycium barbarum L. or Lycium chinense Mill.
It is applicable to Lycium barbarum and Lycium chinense fruit that is sold and used as herbal raw materials in the international trade, including unprocessed and traditionally processed materials.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1575, Tea — Determination of total ash
ISO 1577, Tea — Determination of acid-insoluble ash
ISO 18664, Traditional Chinese Medicine — Determination of heavy metals in herbal medicines used in Traditional Chinese Medicine
ISO 20409, Traditional Chinese medicine — Panax notoginseng root and rhizome
ISO 21371, Traditional Chinese medicine — Labelling requirements of products intended for oral or topical use
ISO 22258, Traditional Chinese medicine — Determination of pesticide residues in natural products by gas chromatography
ISO 22590, Traditional Chinese medicine — Determination of sulfur dioxide in natural products by titration World Health Organization Quality control methods for herbal materials, 2011
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1 Lycium barbarum fruit
dried ripe fruit of Lycium barbarum L. (Fam. Solanaceae)
3.2 Lycium chinense fruit
dried ripe fruit of Lycium chinense Mill. (Fam. Solanaceae)
3.3 batch
samples collected from the same particular place at the same time, of no more than 1 000 kg
3.4 final sample
samples for the test required in this document
Note 1 to entry: Final samples may be packed in different materials meeting conditions for specific tests (e.g.moisture or total ash).
4 Descriptions
The structure of Lycium barbarum L., Lycium chinense Mill. and the dried ripe fruit are shown in Figure 1.Different features such as leaves, flowers and fruits in Lycium barbarum L. and Lycium chinense Mill.,and methods for differentiating these two species, are given in Annex F.
5.2 Microscopic characteristics See Figure 2.
The powder is yellowish-orange or reddish-brown. Epidermal cells of outer pericarp (1) are polygonal or elongated-polygonal, about 60 μm in diameter, with straight or slightly wavy walls, covered with a thick cuticle, with distinct, more-or-less parallel striations. Parenchymatous cells of mesocarp (2) are thin-walled subpolygonal, containing reddish-orange or brownish-red spherical aleurone granules (3). Fragments of starchy endosperm cells (4) contain oil droplets. Stone cells of testa (5) are irregular polygonal, with distinct striations, thickened or slightly wavy walls.