Thermal stability and thermal decomposition kinetics of Ginkgo biloba leaves waste residue
نویسندگان
چکیده
منابع مشابه
Thermal stability and thermal decomposition of sucralose
Several papers have been described on the thermal stability of the sweetener, C12H19Cl3O8 (Sucralose). Nevertheless no study using thermoanalytical techniques was found in the literature. Simultaneous thermogravimetry and differential thermal analysis (TG-DTA), differential scanning calorimetry (DSC) and infrared spectroscopy, have been used to study the thermal stability and thermal decomposit...
متن کاملChemical analysis of Ginkgo biloba leaves and extracts.
The chemical analysis and quality control of Ginkgo leaves and extracts is reviewed. Important constituents present in the medicinally used leaves are the terpene trilactones, i.e., ginkgolides A, B, C, J and bilobalide, many flavonol glycosides, biflavones, proanthocyanidins, alkylphenols, simple phenolic acids, 6-hydroxykynurenic acid, 4-O-methylpyridoxine and polyprenols. In the commercially...
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These studies were undertaken to characterise resorcinolic lipids (5-n-alk(en)ylresorcinols) composition and to determine their seasonal fluctuations in fruit pulp and leaves of Ginkgo biloba L. Resorcinolic lipid concentrations were consistently higher in fruit pulp than in leaves. In pulp, several mono- and di-unsaturated homologs of alkylresorcinols were the predominant group of analysed lip...
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An efficient and rapid protocol has been developed for extracting ginkgolides and bilobalide (terpene trilactones) from Ginkgo biloba leaves. The procedure takes advantage of the extraordinary stability of the terpene trilactone structure to a variety of chemical treatments, especially oxidation, despite the presence of multiple oxygen functions. The protocol involves boiling the aqueous extrac...
متن کاملQuantitative Analysis of Bilobalide and Ginkgolides from Ginkgo biloba Leaves and Ginkgo Products Using H-NMR
than 2000 years, making it one of the oldest known medicinal plants. It is of great interest because its leaves possess pharmacological properties that include radical scavenging, improved blood flow, vasoprotection, and anti-PAF (platelet aggregating factor) activity. In numerous experimental models, a ginkgo extract was found to affect vascular and metabolic disturbances as well as neurologic...
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ژورنال
عنوان ژورنال: Thermal Science
سال: 2018
ISSN: 0354-9836,2334-7163
DOI: 10.2298/tsci170117154z