Results 61 to 70 of about 2,484 (194)

Tannin Structural Elucidation and Quantitative ³¹P NMR Analysis. 2. Hydrolyzable Tannins and Proanthocyanidins [PDF]

Journal of Agricultural and Food Chemistry, 2013
An unprecedented analytical method that allows simultaneous structural and quantitative characterization of all functional groups present in tannins is reported. In situ labeling of all labile H groups (aliphatic and phenolic hydroxyls and carboxylic acids) with a phosphorus-containing reagent (Cl-TMDP) followed by quantitative 31P NMR acquisition ...
Melone F, Saladino R, Lange H, Crestini C   +3 more
openaire   +5 more sources

Development and characterization of novel tannin-modified konjac glucomannan hydrogels with optimized crosslinking features

Carbohydrate Polymer Technologies and Applications
Konjac glucomannan (KGM) is a non-toxic, biodegradable polysaccharide known for its excellent gel-forming properties and high water retention. This study presents a novel tannin-enhanced KGM hydrogel, tailored for controlled solvent release and improved ...
Eleonora Verni, Francesca Sabatini, Chaehoon Lee, Giacomo Fiocco, Maduka Lankani Weththimuni, Barbara Vigani, Heiko Lange, Marco Malagodi, Francesca Volpi   +8 more
doaj   +1 more source

Interface Engineering of Boron Nitride–Polymer Composites for High Thermal Conductivity

Information &Functional Materials, EarlyView.
This review comprehensively discusses the impacts of interfacial design and fabrication strategies on boron nitride–polymer composites, and systematically classifies and summarizes recent advances in interfacial engineering based on the interaction modes between boron nitride fillers and polymer matrices.
Zhao Chen, Yuhang Meng, Chenyu Zhao, Xiangfen Jiang, Xuebin Wang   +4 more
wiley   +1 more source

Polyphenols from Trapa bispinosa Roxb. pericarp extract with inhibitory activities against amyloid-β aggregation and acetylcholinesterase

Results in Chemistry
This study focused on the isolation and structural characterization of three known galloyl glucoses (1, 3, and 4) and a new monomeric ellagitannin, trabisnin (16), from the Trapa bispinosa Roxb. pericarp extract (TBPE).
Yuji Iwaoka, Miharu Matsuura, Chisa Hayakawa, Yoshiaki Amakura, Morio Yoshimura, Tomohiro Uemura, Hideyuki Ito   +6 more
doaj   +1 more source

Perspectives for gallotannins neuroprotective potential - current experimental evidences

Journal of Medical Science, 2016
Gallotannins are class of hydrolyzable tannins consisting of gallic acid and a sugar moiety. Currently, there is growing interest around a possible neuroprotective effect of this class of phytochemicals, which is suggested to be a result of their active ...
Radosław Kujawski, Małgorzata Kujawska, Marcin Ożarowski, Justyna Baraniak, Halina Laskowska, Tamara Nowocień, Magdalena Borowska, Michał Szulc, Agnieszka Sobczak, Przemysław Mikołajczak   +9 more
doaj   +1 more source

Optimization of bioactive compounds extraction from Rosa canina L. pseudofruit through the action of two hydrolytic enzyme preparations

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKROUND The pseudo‐fruit of Rosa canina L. is a rich source of bioactive compounds with antioxidant, anti‐inflammatory, anti‐cancer, anti‐diabetic, anti‐aging, and antimicrobial activities. The aim of the present study is the optimization of a green process based on the action of two hydrolytic enzyme preparations, namely Pectinex® Ultra ...
Zafeiria Lemoni, Styliani Kalantzi, Theopisti Lymperopoulou, Andromachi Tzani, Georgios Stavropoulos, Anastasia Detsi, Diomi Mamma   +6 more
wiley   +1 more source

Utilization of Tannins with Various Polymers for Green-Based Active Packaging: A Review

Jurnal Sylva Lestari
Tannin is a major polyphenolic secondary metabolite widely distributed in the forestry sector and can be added to polymer matrices to manufacture bioactive films for food packaging.
Fidela Devina Agrippina, Maya Ismayati, Sri Hidayati, Bima Putra Pratama   +3 more
doaj   +1 more source

Nutritional and sensory characteristics of local and hybrid East African Highland cooking bananas: Implications for breeding programs

JSFA reports, EarlyView.
Abstract Background Bananas (Musa species) are an important staple food and cash crop in many parts of the world. The East African Highland cooking bananas form the backbone of food security for millions of Ugandans. The demand for high quality cooking bananas is thus closely linked to their sensory characteristics (which drive consumer preference) and
Willy Nelson Kisenyi, Pricilla Marimo, Moses Matovu, Kephas Nowakunda, Ediriisa Mugampoza, Samuel Gafuma, Timothy Omara, Ivan Kiganda   +7 more
wiley   +1 more source

Effects of mixed microbial fermentation on the quality and metabolite profile of cassava leaf feed based on untargeted metabolomics

JSFA reports, EarlyView.
Abstract Background Cassava leaves are a major byproduct of cassava processing and have a low utilization rate. In this study, Lactiplantibacillus plantarum, Saccharomyces cerevisiae, and Bacillus subtilis were used for solid‐state fermentation of cassava leaves to improve their feed quality. Results After 48 h of fermentation, the feed pH decreased to
Mengjun Zhou, Dongxiu Wang, jie Zhang, Jian Chen, Xuding Wen   +4 more
wiley   +1 more source

Tannin Fingerprinting in Vegetable Tanned Leather by Solid State NMR Spectroscopy and Comparison with Leathers Tanned by Other Processes

Molecules, 2011
Solid state 13C-NMR spectra of pure tannin powders from four different sources – mimosa, quebracho, chestnut and tara – are readily distinguishable from each other, both in pure commercial powder form, and in leather which they have been used to tan ...
Jan H. van der Westhuizen, David G. Reid, Melinda J. Duer, Susan L. Bonnet, Frederik H. Romer, Andrew P. Underwood, Nadine D. Senekal   +6 more
doaj   +1 more source