[Evaluation and analysis of inorganic elements in Ginkgo biloba leaves by microwave digestion-ICP-AES]. 2013

Xin Yao, and Gui-Sheng Zhou, and Yu-Ping Tang, and Er-Xin Shang, and Shu-Lan Su, and Da-Wei Qian, and Jin-Ao Duan
Nanjing University of Chinese Medicine, Nanjing, China. yaobest@163.com

Abstract Inorganic elements were determined by ICP-AES using microwave digestion, and principal components analysis(PCA) was used for analysis. The result showed that ginkgo biloba leaves contained more than 22 inorganic elements, Fe, Zn, Cu, Mn, Cr, Co, Ni, Sr, B, Si and Ni were essential trace elements, and Ca, P, K% Na and Mg were essential macro elements. PCA with seven factors (F1, F2, F3, F4, F5, F6, F7) selected could be used to evaluate the quality of ginkgo biloba leaves. The function was following F=0.230 17F1+0.122 39F2+0.079 67F3+0.078 97F4+0.065 25F5+0.062 03F6+0.056 71F7. The samples from Taixing, Shijiazhuang and Taian was the top three which indicated the quality in those cultivation sources was better based on inorganic elements. All the results will provide good basis for comprehensive utilization of ginkgo biloba leaves, especially the leaves from fruit cultivars.

UI MeSH Term Description Entries
D007287 Inorganic Chemicals A broad class of substances encompassing all those that do not include carbon and its derivatives as their principal elements. However, carbides, carbonates, cyanides, cyanates, and carbon disulfide are included in this class. Chemicals, Inorganic
D008872 Microwaves That portion of the electromagnetic spectrum from the UHF (ultrahigh frequency) radio waves and extending into the INFRARED RAYS frequencies. EHF Waves,Extremely High Frequency Radio Waves,Micro Wave,Micro Waves,Ultrahigh Frequency Waves,Microwave Radiation,EHF Wave,Micro Waves,Microwave,Microwave Radiations,Radiation, Microwave,Ultrahigh Frequency Wave,Wave, EHF,Wave, Micro,Wave, Ultrahigh Frequency,Waves, Micro
D013054 Spectrophotometry, Atomic Spectrophotometric techniques by which the absorption or emmision spectra of radiation from atoms are produced and analyzed. Spectrophotometry, Atomic Absorption,AA Spectrophotometry,AE Spectrophotometry,Atomic Absorption Spectrophotometry,Atomic Emission Spectrophotometry,Atomic Spectrophotometry,Inductively Coupled Plasma Atomic Emission Spectrophotometry,Inductively Coupled Plasma Atomic Emission Spectroscopy,Spectrophotometry, Atomic Emission,AA Spectrophotometries,AE Spectrophotometries,Absorption Spectrophotometry, Atomic,Emission Spectrophotometry, Atomic,Spectrophotometries, AA,Spectrophotometries, AE,Spectrophotometry, AA,Spectrophotometry, AE
D014131 Trace Elements A group of chemical elements that are needed in minute quantities for the proper growth, development, and physiology of an organism. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Biometal,Biometals,Trace Element,Trace Mineral,Trace Minerals,Element, Trace,Elements, Trace,Mineral, Trace,Minerals, Trace
D018515 Plant Leaves Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed) Plant Leaf,Leaf, Plant,Leave, Plant,Leaves, Plant,Plant Leave
D020441 Ginkgo biloba The only specie of the genus Ginkgo, family Ginkgoacea. It is the source of extracts of medicinal interest, especially Egb 761. Ginkgo may refer to the genus or species. Gingko,Gingko biloba,Ginkgo,Ginkgophyta,Maidenhair Tree,Ginko,Gingko bilobas,Gingkos,Ginkgo bilobas,Ginkgophytas,Ginkgos,Ginkos,Maidenhair Trees,Tree, Maidenhair,Trees, Maidenhair,bilobas, Gingko,bilobas, Ginkgo
D025341 Principal Component Analysis Mathematical procedure that transforms a number of possibly correlated variables into a smaller number of uncorrelated variables called principal components. Analyses, Principal Component,Analysis, Principal Component,Principal Component Analyses

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