Results 71 to 80 of about 3,648 (192)

Tannins of Constant Structure in Medicinal and Food Plants—Hydrolyzable Tannins and Polyphenols Related to Tannins

open access: yesMolecules, 2011
In addition to the commonly used classification as hydrolyzable tannins and condensed tannins, tannins can also be categorized into two other types: polyphenols of constant chemical structure (Type A) and polyphenols of variable composition (Type B ...
Takuo Okuda, Hideyuki Ito
doaj   +1 more source

Coupling of Physical Protection and Molecular Composition Drives Carbon Sequestration Divergence in Soils Planted With Different Tea Varieties

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Tea plantations represent significant carbon (C) sinks in agricultural landscapes, yet how variety‐specific organic inputs are associated with the molecular composition and stability of soil organic carbon (SOC) within aggregate hierarchies remains unclear.
Jingchao Zhou   +9 more
wiley   +1 more source

Antioxidant Potential of Polyphenols and Tannins from Burs of Castanea mollissima Blume

open access: yesMolecules, 2011
Spiny burs of Castanea mollissima Blume (Chinese chestnut) are usually discarded as industrial waste during post-harvesting processing. The objective of this study was to establish an extraction and isolation procedure for tannins from chestnut burs, and
Chao Ma   +5 more
doaj   +1 more source

From mainland to islands: the evolution of resistance and tolerance to herbivory in long‐lived oaks

open access: yesOikos, EarlyView.
Island biogeography theory predicts that island plants should exhibit reduced defences compared with their mainland relatives due to relaxed herbivory pressure. However, growing empirical evidence challenges this prediction, revealing substantial variation among systems, plant lineages and defence types.
Irene Virseda   +16 more
wiley   +1 more source

Electrospun fibrous sorbents for the removal of uranium and americium from aqueous media

open access: yesPolymer International, EarlyView.
Polymethacrylate‐based electrospun microfibers with tertiary amino functionalities are evaluated as adsorbents for U‐232 and Am‐241 in both simplified and complex (seawater) water matrices, highlighting their ability for efficient actinide removal. Abstract Polymethacrylate‐based electrospun microfibers containing tertiary amino functionalities were ...
Andreas Hadjianastasi   +4 more
wiley   +1 more source

Tissue-specific regulation of CYP3A by hydrolysable tannins in male pigs

open access: yesXenobiotica, 2015
1. Little is known about the activities and regulation of cytochrome P4503A (CYP3A) enzymes in porcine colon in response to specific feeding components. 2. We added hydrolyzable tannins to the diet of fattening boars and studied its effect on the expression of hepatic and intestinal CYP3A. 3.
Zamaratskaia, Galia   +5 more
openaire   +3 more sources

A Bio‐Based Crosslinkable Schiff Base for Enhancing Anti‐Dripping, UV Resistance, and Mechanical Properties of PLA Composites and Fiber

open access: yesSafety Science and Technology, EarlyView.
Tannic acid‐derived Schiff base (TBFe) designed with catalytic carbonization performance creates multifunctional flame‐retardant intumescent PLA with superior anti‐dripping performance, enhancement in strength, good spinnability and UV resistance reaches > 99.9% in UVA/UVB ranges.
Xu Jin   +6 more
wiley   +1 more source

A Comprehensive Analysis of Diversity, Structure, Biosynthesis and Extraction of Biologically Active Tannins from Various Plant-Based Materials Using Deep Eutectic Solvents

open access: yesMolecules
This paper explores the emerging subject of extracting tannins from various plant sources using deep eutectic solvents (DESs). Tannins are widely used in the food and feed industries as they have outstanding antioxidant qualities and greatly enhance the ...
Maja Molnar   +2 more
doaj   +1 more source

Tannin vacuoles and starch in the development of Scots pine (Pinus sihestris) vegetative buds

open access: yesActa Societatis Botanicorum Poloniae, 2015
Tannin cells occur throughout the bud except the distal and peripheral meristem zones of the apical meristem, and the youngest cataphyll primordia. Starch is absent in winter buds.
Alina Hejnowicz
doaj   +1 more source

Plant‐derived nanovesicles as potential drug delivery systems for topical use: Emerging applications in dermatology and cosmetology

open access: yesVIEW, EarlyView.
Plant‐derived nanovesicles (PDNVs) are naturally secreted by fruit, vegetables, seeds, leaves and other natural sources. Used as drug delivery systems, they can combine intrinsic therapeutic activity, enhanced skin permeation and cargo‐carrying capacity, suitable for dermatological and cosmetic applications including hydration, antioxidant/anti ...
Dorotea Fiore   +5 more
wiley   +1 more source

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