Ginkgo biloba (leaf)
(new template) |
|||
Line 54: | Line 54: | ||
|caption2=Calcium oxalate crystal, polarized, 200X in glycerin:dionized water solution. Epidermis has irregularly sinuous walls, often with palisade parenchmya, stomata deeply sunken surrounded by 6-8 subsidiary cells, various sizes of calcium oxalate cluster crystals abundant. | |caption2=Calcium oxalate crystal, polarized, 200X in glycerin:dionized water solution. Epidermis has irregularly sinuous walls, often with palisade parenchmya, stomata deeply sunken surrounded by 6-8 subsidiary cells, various sizes of calcium oxalate cluster crystals abundant. | ||
|source2= Amy Brush, Traditional Medicinals http://www.traditionalmedicinals.com}} | |source2= Amy Brush, Traditional Medicinals http://www.traditionalmedicinals.com}} | ||
− | |||
=High Performance Thin Layer Chromatographic Identification= | =High Performance Thin Layer Chromatographic Identification= |
Revision as of 16:00, 18 March 2014
Contents |
Nomenclature
Ginkgo biloba L. Ginkgoaceae
Standardized common name (English): ginkgo
Pinyin name(s): yin xing; bai guo (seed); yin xing ye (leaf)
Botanical Voucher Specimen
|
|
|
Organoleptic Characteristics
|
Macroscopic Characteristics
|
Microscopic Characteristics
|
|
High Performance Thin Layer Chromatographic Identification
Ginkgo (leaf) Ginkgo biloba Lane Assignments Lane 1(3μl) Ginkgo biloba (leaf) (Vouchered Sample); Lane 2(3μl) Sophora japonica (fruit); Lane 3(3μl) Ginkgo biloba (leaf); Lane 4(3μl) Ginkgo biloba (leaf); Lane 5(3μl) Ginkgo biloba (leaf); Lane 6(3μl) Ginkgo biloba (leaf) (USA); Lane 7(3μl) Ginkgo biloba (leaf) (China) authenticated by macroscopic, microscopic &/or TLC studies according to the reference sources cited below held at Alkemists Pharmaceuticals, Costa Mesa, CA. Stationary Phase Silica gel 60, F254, 10 x 10 cm HPTLC plates Mobile Phase ethyl acetate: glacial acetic acid: formic acid: water [10/1.1/1.1/2.4] Sample Preparation Method 0.3 g + 3 ml 100% grain EtOH sonicated + heated @ 50° C ~ 1 hr. Detection Method Natural Product Reagent + PEG -> UV 365 nm Reference see British Pharmacopoeia, 2003
|
Supplementary Information
Ginkgo (leaf extract) (Ginkgo biloba) standardized to flavonol glycosides and terpenes.
General Characteristics AHPA recommends in its Known Adulterants list that appropriate steps be taken to assure that this raw material is free of the noted adulterant. Contact AHPA for additional information regarding relevant analytical methods or follow this link for more information.
Reported Adulterants Ginkgo (Ginkgo biloba) leaf extract with added flavonol glycosides or aglycones (e.g., rutin, quercetin, etc.).
Source: AHPA Known Adulterants [9]
Sources
- ↑ Botanical Voucher Specimen Library, Alkemists Laboratories http://www.alkemist.com
- ↑ Botanical Voucher Specimen Library, Alkemists Laboratories http://www.alkemist.com
- ↑ Botanical Voucher Specimen Library, Alkemists Laboratories http://www.alkemist.com
- ↑ Steven Yeager, Mountain Rose Herbs http://www.MountainRoseHerbs.com
- ↑ Steven Yeager, Mountain Rose Herbs http://www.MountainRoseHerbs.com
- ↑ Elan M. Sudberg, Alkemist Laboratories http://www.alkemist.com
- ↑ Amy Brush, Traditional Medicinals http://www.traditionalmedicinals.com http://www.traditionalmedicinals.com
- ↑ Elan M. Sudberg, Alkemist Laboratories http://www.alkemist.com
- ↑ AHPA Known Adulterants http://www.ahpa.org/