Results 71 to 80 of about 4,664 (206)
Emission of reactive oxygen species during degradation of iron gall ink [PDF]
, 2010 Iron gall inks are characterised by high contents of acids and transition metals, promoting degradation of cellulose due to hydrolysis and oxidation, respectively. Their chemical interaction with the environment is not well understood, especially in view
Cassar, M. +5 more
core
Secondary metabolites of alchemilla persica growing in Iran (East Azarbaijan) [PDF]
, 2015 Phytochemical investigations of Alchemilla persica Rothm. growing in Iran were performed taking into account both the volatile and polar constituents. The hydrodistilled essential oil was analysed by GC-MS that revealed the presence of diterpenoids (19.6
Afshar, Fariba Heshmati +4 more
core +1 more source
BMC Complementary and Alternative Medicine, 2012 Background Enhancement of tumor cell sensitivity may help facilitate a reduction in drug dosage using conventional chemotherapies. Consequently, it is worthwhile to search for adjuvants with the potential of increasing chemotherapeutic drug effectiveness
Castañeda Diana M +4 more
doaj +1 more source
Spectrophotometric Determination of Gallotannins in Beer
Journal of AOAC INTERNATIONAL, 1973 Abstract A method for the determination of traces of gallotannins in beer, in the presence of other natural tannins, has been developed. The procedure is based on the formation of a deep blue iron-tannin complex which is evaluated spectrophotometrically at 530 nm.
Howard W Ziegler +2 more
openaire +1 more source
Drivers of plant phenolic concentration across global drylands
Journal of Ecology, Volume 114, Issue 1, January 2026.This study advances the understanding of how biotic and abiotic stressors shape plant defence strategies in global drylands. The findings shed novel insights about how plant secondary metabolites and their associated functions shift in response to changes in climate and grazing pressure, two key global change drivers with significant implications for ...
Kaarina N. Shilula +18 more
wiley +1 more source
Metabolism of soluble proteins by rumen microorganisms and the influence of condensed tannins on nitrogen solubility and degradation [PDF]
, 2004 The amino acid requirements of ruminants are met by two sources; microbes leaving the rumen and dietary protein escaping fermentation in the rumen. Much ruminant research has therefore focused on improving amino acid supply to the duodenum by increasing ...
Hedqvist, Helena
core
Tannins and Their Complex Interaction with Different Organic Nitrogen Compounds and Enzymes : Old Paradigms versus Recent Advances [PDF]
, 2017 Tannins, an abundant group of plant secondary compounds, raise interest in different fields of science, owing to their unique chemical characteristics. In chemical ecology, tannins play a crucial role in plant defense against pathogens, herbivores, and ...
Adamczyk, Bartosz +4 more
core +1 more source
Rapid Communications in Mass Spectrometry, Volume 39, Issue 24, 30 December 2025.ABSTRACT Rationale Classifying specialized metabolites in untargeted metabolomics remains a major challenge, particularly when relying solely on high‐resolution mass spectrometry (HRMS) data at the MS1 level. Traditional approaches using Van Krevelen diagrams often lack sufficient resolution to distinguish structurally similar metabolite classes ...
Nerilson M. Lima +7 more
wiley +1 more source
Evaluation Of Tannin From Rhizophora Apiculata As Rust Converter [PDF]
, 2005 The main objective of this research is to formulate rust ...
SANTOSO, HENNY SUMILO
core
How gamma-rays and electron-beam irradiation would affect the antimicrobial activity of differently processed wild mushroom extracts? [PDF]
, 2015 Aims: The effects of irradiation (gamma-rays and electron-beams), up to 10 kGy, in the antimicrobial activity of mushroom species (Boletus edulis, Hydnum repandum, Macrolepiota procera and Russula delica) differently processed (fresh, dried, freeze ...
Alves, Maria José +9 more
core +1 more source