Linking chemical reactivity and protein precipitation to structural characteristics of foliar tannins

Journal of Chemical Ecology
T E C KrausR J Zasoski

Abstract

Tannins influence ecosystem function by affecting decomposition rates, nutrient cycling, and herbivory. To determine the role of tannins in ecological processes, it is important to quantify their abundance and understand how structural properties affect reactivity. In this study, purified tannins from the foliage of nine species growing in the pygmy forest of the northern California coast were examined for chemical reactivity, protein precipitation capacity (PPC), and structural characteristics (13C NMR). Reactivity of purified tannins varied among species 1.5-fold for the Folin total phenol assay, and 7-fold and 3-fold, respectively, for the acid butanol and vanillin condensed tannin assays. There was about a 5-fold difference in PPC. Variation in chemical reactivity and PPC can be largely explained by differences in structural characteristics of the tannins determined by 13C NMR. In particular, the condensed versus hydrolyzable tannin content, as well as the hydroxylation pattern of the B-ring and stereochemistry at the C-2-C-3 position appear to influence reactivity. Due to the large differences in chemical reactivity among species, it is necessary to use a well-characterized purified tannin from the species of interest to c...Continue Reading

Citations

Jul 11, 2007·Bulletin of Environmental Contamination and Toxicology·Q GuangqiuL Haoliang
Jul 25, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Josh L HixsonEric N Wilkes
Aug 30, 2005·Journal of Chemical Ecology·Marja-Leena LaitinenMatti Rousi
Dec 1, 2017·Food Science & Nutrition·Jason LevyKatheryn M Goodrich
Jun 6, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Susana SoaresVictor de Freitas
Jan 15, 2009·Journal of Environmental Quality·K H VennerC M Preston
Dec 1, 2010·Journal of Chemical Ecology·Ashley N ScioneauxAnn E Hagerman
Jan 30, 2015·Magnetic Resonance in Chemistry : MRC·Caroline M Preston
Jun 4, 2016·Journal of Chemical Ecology·Hannah R WindleyKaren J Marsh
Nov 18, 2006·Journal of Chemical Ecology·Klaas G J Nierop, Jacobus M Verstraten
Oct 18, 2008·American Journal of Primatology·Jessica M RothmanAlice N Pell
May 1, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xin LiZongsuo Liang
Jun 3, 2021·International Journal of Environmental Research and Public Health·Zygmunt Mariusz GusiatinMaja Radziemska

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.