Allocation of biomass and photoassimilates in juvenile plants of six Patagonian species in response to five water supply regimes. (1/2)
(+info)Phenolic acids in the flowers and leaves of Grindelia robusta Nutt. and Grindelia squarrosa Dun. (Asteraceae). (2/2)
2D-TLC and RP-HPLC methods were applied to qualitatively determinate free phenolic acids and those liberated by acid and alkaline hydrolysis in the flowers and leaves of G. robusta and G. squarrosa. The presence of eleven phenolic acids, namely: caffeic, chlorogenic, p-coumaric, p-hydroxybenzoic, ferulic, gallic, protocatechuic, vanillic salicylic, p-hydroxyphenylacetic and ellagic acids was determined. Quantitative estimate of phenolic acids, expressed as caffeic acid, has been analyzed by the method described in the Polish Pharmacopoeia VIII. The content of phenolic acids in G. robusta reached 7.33 mg/g and 6.23 mg/g for flowers and leaves, respectively. The flowers and leaves of G. squarrosa were characterized by similar level of phenolic acids, namely 6.81 mg/g and 6.59 mg/g, respectively. (+info)"Grindelia" is a botanical term that refers to a genus of flowering plants in the daisy family, also known as "gumweed" or "tarweeds." These plants are native to North and South America. While some species of Grindelia have been used in traditional medicine, there is limited scientific evidence supporting their effectiveness for specific medical conditions.
In a medical context, the term "Grindelia" may be used to refer to herbal remedies or extracts made from these plants. However, it's important to note that the use of such remedies carries potential risks and should only be done under the guidance of a qualified healthcare professional. Some species of Grindelia contain compounds that can be toxic in high doses, and there is a lack of rigorous clinical trials evaluating their safety and efficacy. Therefore, it's crucial to exercise caution when considering the use of Grindelia or any other herbal remedy for medicinal purposes.