Results 11 to 20 of about 14,230 (253)

The effects of irradiance on the production of phenolic compounds and condensed tannins in Larix gmelinii needles [PDF]

open access: yesBiologia Plantarum, 2014
Needles of Larix gmelinii seedlings grown under different irradiances (100, 52, and 26 % of natural sunlight) were collected from June to August 2009. The content of phenolic compounds and condensed tannins in needles were strongly affected by different ...
J. X. Yan, Y. F. Lu, S. C. Yan
doaj   +2 more sources

Digestibility of canola seeds treated by autoclaving and/or condensed tannins [PDF]

open access: yesRevista Colombiana de Ciencias Pecuarias, 2014
Background: plant proteins are susceptible to rapid degradation in the rumen therefore it is important to explore the best way to improve protein utilization.
Geraldo T Dos Santos   +7 more
doaj   +1 more source

Perspectives on Tannins [PDF]

open access: yes, 2021
Tannins are a family of versatile, natural phenolic biomolecules whose key role is to protect plants against insects and fungi. They are also valuable in use for humans.

core   +1 more source

The synthesis of condensed tannins [PDF]

open access: yes, 1994
A literature review with 110 references is presented which examines the history of the chemistry of condensed tannins and the development of this chemistry in parallel with the development of modern analytical techniques. The role which these compounds play in the wine and brewing industries is discussed.
Moran, Declan
openaire   +3 more sources

Geographical and within-population variation of constitutive chemical defences in a Mediterranean oak (Quercus ilex)

open access: yesForest Systems, 2020
Aim of study: to assess whether constitutive levels of total phenols and condensed tannins acting as chemical defences in Quercus ilex vary across regions, populations and genotypes.
Manuela Rodríguez-Romero   +2 more
doaj   +1 more source

Chemical Derivatization of Commercially Available Condensed and Hydrolyzable Tannins [PDF]

open access: yes, 2021
Novel valorization routes for tannins were opened by the development of a simple, straightforward, robust, and flexible approach to the selective functionalization of condensed and hydrolyzable tannins.
Zhen L., Zongo L., Crestini C., Lange H.
core   +1 more source

Chemical profile of Tetraclinis articulata (Vahl) Masters, and Juglans regia L. and Olea europaea L. var. Sylvestris used against oral diseases: in vitro analysis between polyphenolic content and aqueous extraction optimization

open access: yesHeliyon, 2021
Objective: Optimization of aqueous extraction to extract the maximum amount of polyphenolic compounds that are used to treat oral disorders. Methods: Using revelation tests for phytochemical screening, Folin-Ciocalteu reagent for total phenols, catechin ...
Hazim Harouak   +2 more
doaj   +1 more source

An improved butanol-HCl assay for quantification of water-soluble, acetone:methanol-soluble, and insoluble proanthocyanidins (condensed tannins)

open access: yesPlant Methods, 2017
Background Condensed tannins (CT) are the most abundant secondary metabolite of land plants and can vary in abundance and structure according to tissue type, species, genotype, age, and environmental conditions.
Philip-Edouard Shay   +2 more
doaj   +1 more source

Characterization of tannin extracts derived from the bark of four tree species by HPLC and FTIR

open access: yesForest Science and Technology, 2023
The objective of this work was the extraction and quantification of tannins obtained from the bark of four tree species from the forests of Ixtlán de Juárez, Oaxaca, Mexico (Arbutus xalapensis Kunth., Prunus serotina Ehrh., Quercus crassifolia Humb.
Faustino Ruiz-Aquino   +4 more
doaj   +1 more source

MALDI-TOF MS Analysis of Condensed Tannins with Potent Antioxidant Activity from the Leaf, Stem Bark and Root Bark of Acacia confusa

open access: yesMolecules, 2010
The structures of the condensed tannins from leaf, stem bark and root bark of Acacia confusa were characterized by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) analysis, and their antioxidant activities were
Shu-Dong Wei   +4 more
doaj   +1 more source

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