LY/T 1699-2023 Ginkgo biloba leaf extract

scope
This document specifies the extract of Ginkgo biloba leaves（Ginkgo bilobaThe technical requirements, sampling, testing methods, identification methods, inspection rules, labeling, packaging, storage, transportation, and shelf life of leaves extract (GEE).
This document applies to extracts obtained from dried Ginkgo biloba leaves through processes such as crushing, dilute ethanol extraction, concentration, macroporous resin adsorption and desorption, re concentration, and drying.

Terms and definitions
The following terms and definitions apply to this document.
Ginkgo biloba total flavonol glycosides from GBE
Ginkgo total flavonoids
Flavonoids contained in Ginkgo biloba leaf extract.
Note: It mainly refers to the total amount of flavonol cinnamoyl glycosides based on quercetin, kaempferol, and isorhamnetin.
Example 1
The chemical structure is shown in Figure 1.


Total terpene lactones from GBE in Ginkgo biloba
The total amount of shiitake lactone and sesquiterpene lactone in Ginkgo biloba leaf extract.
Note: Diterpenoid lactones include ginkgolide A, ginkgolide B, and ginkgolide C; sesquiterpene lactones mainly refer to bilobalide.
Example 2
The chemical structure is shown in Figure 2.


Ginkgolic acids
Ginkgolic acid is a general term for a mixture composed of a series of 6-alkyl salicylic acid derivatives.
Note: The alkyl side chain is mainly composed of C_13:0、C_15:0、C_15:1、C_17:1、C_17:2Wait.
Example 3
The chemical structure is shown in Figure 3.


Technical Requirements
sensory index
Light yellow to yellow brown powder, slightly bitter taste, no visible foreign matter to the naked eye.
technical indicators
The technical indicators should meet the requirements of Table 1.


sampling
According to the requirements of Table 2, the sampling personnel shall inspect the packaging from the batch. Quantity of extracted packaging（n）Depends on the size of the batch（N）.


Use a sampling shovel to extract basic samples from different packaging locations, mix all the extracted basic samples evenly, and obtain a mixed sample.
The number of samples shall be taken from the mixed sample at three times the required sample quantity for the inspection item: one for inspection, one for retesting, and one for future reference. Place them separately in clean and dry brown glass containers, and seal the bottle caps. The bottle label should indicate the manufacturer's name, product name, batch number, quantity, and sampling date.

Test Method
Determination of moisture content
According to the provisions of GB/T 5009.3.
GB 5009.3-2016 National Food Safety Standard Determination of Moisture in Food


Kyoto Electronics KEM Karl Fischer Moisture Analyzer MKV-710S