Results 21 to 30 of about 6,593 (215)

Anti-COVID-19 Potential of Ellagic Acid and Polyphenols of Punica granatum L.

Molecules, 2023
Pomegranate (Punica granatum L.) is a rich source of polyphenols, including ellagitannins and ellagic acid. The plant is used in traditional medicine, and its purified components can provide anti-inflammatory and antioxidant activity and support of host ...
Ralitza Alexova, Simona Alexandrova, Stela Dragomanova, Reni Kalfin, Ayten Solak, Sidharth Mehan, Maria Cristina Petralia, Paolo Fagone, Katia Mangano, Ferdinando Nicoletti, Lyubka Tancheva   +10 more
doaj   +1 more source

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

Antioxidants, 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, Maciej Włodarczyk, Dominika Kunachowicz, Andrzej Dryś, Marta Kepinska, Izabela Fecka   +5 more
doaj   +1 more source

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

Molecules, 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, Yosuke Matsuo, Yoshinori Saito, Yong-Lin Huang, Dian-Peng Li, Takashi Tanaka   +5 more
doaj   +1 more source

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

Journal 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, Knez Željko, Škerget Mojca   +2 more
doaj   +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

Foods, 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, Mincy Chakkalakal, Adrianne Pan, Dawnica Nadora, Mildred Min, Ashley Dumont, Waqas A. Burney, Cindy J. Chambers   +7 more
doaj   +1 more source

Conformationally Flexible Ellagitannins: Conformational Analysis of Davidiin and Punicafolin via DFT Calculation of 1H NMR Coupling Constants

, 2023
Many ellagitannins with various conformations of their glucose moiety have been isolated from natural sources. Here, a conformational analysis was performed via the density functional theory calculation of 1H NMR coupling constants. It was observed that,
Takashi, Tanaka, Chiho, Okubo, Yoshinori, Saito, Yosuke, Matsuo, Misato, Iki   +4 more
core   +1 more source

Partition Coefficients (logP) of Hydrolysable Tannins

Molecules, 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

Ellagitannins from the Onagraceae Decrease the Performance of Generalist and Specialist Herbivores [PDF]

, 2022
Phenolics have a role in defenses against herbivores, but the defensive functions of specific groups of phenolics are still poorly understood. For example, ellagitannins (a type of hydrolyzable tannin) are predicted to decrease insect herbivore ...
Marc T. J. Johnson, Juha-Pekka Salminen, Iris Cheval, Daniel N. Anstett, Caitlyn D’Souza   +4 more
core   +1 more source

Antioxidant and Anti-Inflammatory Properties of Walnut Constituents: Focus on Personalized Cancer Prevention and the Microbiome

Antioxidants, 2023
Walnuts have been lauded as a ‘superfood’, containing a remarkable array of natural constituents that may have additive and/or synergistic properties that contribute to reduced cancer risk. Walnuts are a rich source of polyunsaturated fatty acids (PUFAs:
Nuoxi Fan, Jennifer L. Fusco, Daniel W. Rosenberg   +2 more
doaj   +1 more source

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

Polish 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, Król Bogusław, Kosmala Monika, Milala Joanna, Zduńczyk Zenon, Żary-Sikorska Ewa   +5 more
doaj   +1 more source