Results 21 to 30 of about 6,619 (213)

Polyphenol Profile of Cistus × incanus L. and Its Relevance to Antioxidant Effect and α-Glucosidase Inhibition

open access: yesAntioxidants, 2023
The European Food Safety Authority recommends C. incanus as a natural source of antioxidants. Its activity is essentially determined by polyphenols, although specific compounds are not finally indicated.
Aneta Starzec   +5 more
doaj   +1 more source

Identification of Unstable Ellagitannin Metabolites in the Leaves of Quercus dentata by Chemical Derivatization

open access: yesMolecules, 2023
The identification of unstable metabolites of ellagitannins having ortho-quinone structures or reactive carbonyl groups is important to clarify the biosynthesis and degradation of ellagitannins.
Zhang-Bin Liu   +5 more
doaj   +1 more source

Innovative microwave-assisted hydrolysis of ellagitannins and quantification as ellagic acid equivalents [PDF]

open access: yes, 2021
The health-promoting effects of ellagic acid and its intestinal degradation products are well-known. In plants, ellagic acid mainly appears in the form of its precursors, the so-called ellagitannins. Therefore, determination of total ellagic acid content
Andlauer, Wilfried   +1 more
core   +1 more source

Hydrothermal hydrolysis of sweet chestnut (Castanea sativa) tannins [PDF]

open access: yesJournal of the Serbian Chemical Society, 2020
Sweet chestnut tannins were treated with subcritical water at temperatures from 120 to 300 °C for reaction times of 15, 30 and 60 min. A great influence of temperature and reaction time on the product yield was noticed.
Gagić Tanja   +2 more
doaj   +1 more source

Ellagitannins with Glucopyranose Cores Have Higher Affinities to Proteins than Acyclic Ellagitannins by Isothermal Titration Calorimetry [PDF]

open access: yes, 2019
The thermodynamics of the interactions of different ellagitannins with two proteins, namely, bovine serum albumin (BSA) and gelatin, were studied by isothermal titration calorimetry.
Juha-Pekka Salminen   +9 more
core   +1 more source

Prospective Randomized, Double-Blind, Placebo-Controlled Study of a Standardized Oral Pomegranate Extract on the Gut Microbiome and Short-Chain Fatty Acids

open access: yesFoods, 2023
Punica granatum L., commonly known as the pomegranate, is an abundant source of polyphenols, including hydrolyzable ellagitannins, ellagic acid, anthocyanins, and other bioactive phytochemicals shown to be effective in defending against oxidative stress,
Raja K. Sivamani   +7 more
doaj   +1 more source

Fundamental Methods in Ellagitannin Synthesis

open access: yesNatural Product Communications, 2017
This account describes methods for synthesizing natural ellagitannins. The ellagitannins, a class of polyphenols, has a wide variety of chemical structures and biological activities.
Hidetoshi Yamada   +3 more
doaj   +1 more source

Partition Coefficients (logP) of Hydrolysable Tannins

open access: yesMolecules, 2020
The partition coefficients (logP) between n-octanol and water of 47 purified and characterized hydrolysable tannins were measured with the shake flask method utilizing UPLC and HPLC with UV detection.
Valtteri Virtanen, Maarit Karonen
doaj   +1 more source

L.) and bioavailability of ellagitannins. A review [PDF]

open access: yes, 2020
Fireweed (Epilobium angustifolium L.) is a well-known medicinal plant traditionally used in the treatment of urogenital diseases, stomach and liver disorders, skin problems, etc. E. angustifolium extracts show antiandrogenic, antiproliferative, cytotoxic,
Artur Adamczak   +7 more
core   +1 more source

Physiological Properties of Dietary Ellagitannin-Rich Preparations Obtained from Strawberry Pomace Using Different Extraction Methods

open access: yesPolish Journal of Food and Nutrition Sciences, 2015
The objective of this study was to establish the composition of strawberry preparations rich in ellagitannins obtained using water or acetone extraction (EF and EP preparation, respectively). Then, biological effect of these extracts was assessed in 4-wk
Juśkiewicz Jerzy   +5 more
doaj   +1 more source

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