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grindelia pulchella/phenolic
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HPLC-DAD-ESI/MS(n) analysis of phenolic compounds for quality control of Grindelia robusta Nutt. and bioactivities.
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The phenolic composition of herbal tea (HT) and hydromethanolic extract (HME) obtained from Grindelia robusta Nutt. was studied by HPLC-DAD-ESI/MS(n). Thirty six flavonoids and hydroxycinnamic acids were detected, from which thirty are described for the first time in this species. Quantification by
Phenolic acids in the flowers and leaves of Grindelia robusta Nutt. and Grindelia squarrosa Dun. (Asteraceae).
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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,
[Phenolic components from some species of Grindelia (author's transl)].
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Allocation of biomass and photoassimilates in juvenile plants of six Patagonian species in response to five water supply regimes.
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OBJECTIVE
The growth-differentiation balance hypothesis (GDBH) states that there is a physiological trade-off between growth and secondary metabolism and predicts a parabolic effect of resource availability (such as water or nutrients) on secondary metabolite production. To test this hypothesis, the
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