Results 1 to 10 of about 1,308,659 (240)

By-Products of Agri-Food Industry as Tannin-Rich Sources: A Review of Tannins’ Biological Activities and Their Potential for Valorization

open access: yesFoods, 2021
During recent decades, consumers have been continuously moving towards the substitution of synthetic ingredients of the food industry by natural products, obtained from vegetal, animal or microbial sources.
María Fraga-Corral   +8 more
doaj   +2 more sources

Isolation, Characterization, Antioxidant Activity, Metal-Chelating Activity, and Protein-Precipitating Capacity of Condensed Tannins from Plum (Prunus salicina) Fruit

open access: yesAntioxidants, 2022
The type of polymeric condensed tannins from plum fruit (Prunus salicina) (PCT), the degree of polymerization and the distribution of polymers were characterized by MALDI-TOF MS and NMR spectroscopy. The metal-binding capacity of PCT with five metal ions
Liangliang Zhang   +4 more
doaj   +2 more sources

Comparative study of the effectiveness of synthetic tannins and aniline dyes in patients with primary or secondary superficial pyoderma

open access: yesImmunopathology, Allergology, Infectology, 2021
The pharmacological effects of tannins are mainly related to their astringent action. Several medical studies in recent decades have shown additional antimicrobial and anti- inflammatory properties of tannins. Purpose of the study. To evaluate the efficacy and safety of fixed tannin combinations, including spray / lotion (suspension) and cream ...
D. Zaslavsky   +4 more
openaire   +2 more sources

Heterogeneous Photodegradation for the Abatement of Recalcitrant COD in Synthetic Tanning Wastewater

open access: yesChemEngineering, 2022
Tannery wastewater is considered one of the most contaminated and problematic wastes since it consists of considerable amounts of organic and inorganic compounds.
Maria Toscanesi   +6 more
doaj   +2 more sources

Impact of Bio-Based (Tannins) and Nano-Scale (CNC) Additives on Bonding Properties of Synthetic Adhesives (PVAc and MUF) Using Chestnut Wood from Young Coppice Stands [PDF]

open access: yesNanomaterials, 2020
Sustainability and ecotoxicity issues call for innovations regarding eco-friendly adhesives in the production of biocomposite wood materials, and solutions involving nano-scale and bio-based compounds represent a valid and promising target. One possible approach is to increase the performance of adhesives such as polyvinyl acetate (PVAc) or melamine ...
Francesco Marini   +7 more
openaire   +4 more sources

Comparison of the Effect of Synthetic (Tannic Acid) or Natural (Oak Bark Extract) Hydrolysable Tannins Addition on Fatty Acid Profile in the Rumen of Sheep

open access: yesAnimals, 2022
The aim of the study was to compare two sources of tannins on fatty acids (FA) composition in rumen. Treatments were (g tannins/kg diet as-feed-basis) as follows: (1) no supplemental tannin addition (CON), (2) addition of 13 g of oak bark extract (OAK), and (3) 4 g of tannic acid (TAN). The basal diet contained 55:45 forage to concentrate ratio.
Małgorzata P. Majewska   +4 more
openaire   +4 more sources

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

open access: yesJurnal 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   +3 more
doaj   +2 more sources

Application of the Gold-Beater's Skin Test to Some Synthetic Tannins

open access: yesNature, 1932
IN several communications1 we have shown that the generally accepted reactions for the tannins are quite unreliable, with the result that the above-named test was evolved.2 The gold-beater's skin test demonstrates the tanning properties of a substance, and is given only by true tannins.
M. Nierenstein
openaire   +2 more sources

Direct anthelmintic effects of condensed tannins from diverse plant sources against Ascaris suum. [PDF]

open access: yesPLoS ONE, 2014
Ascaris suum is one of the most prevalent nematode parasites in pigs and causes significant economic losses, and also serves as a good model for A.
Andrew R Williams   +4 more
doaj   +9 more sources

Ozonation of synthetic versus natural textile tannins: recalcitrance and toxicity towards Phaeodactylum tricornutum

open access: yesWater Science and Technology, 2007
A sound in-plant pollution control strategy can only be defined by paying due attention to bio-recalcitrance and toxicity. In this context the levels of toxicity and inert COD introduced to textile dyebath discharges by two alternative auxiliary chemicals, namely natural tannin (NT) and synthetic tannin (ST), were investigated. The effect of 40 minutes
F, Germirli Babuna   +4 more
openaire   +3 more sources

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