Results 1 to 10 of about 435,425 (306)

Investigation on the mechanism of structural reconstruction of biochars derived from lignin and cellulose during graphitization under high temperature

open access: yesBiochar, 2023
The structural reconstruction mechanism of lignin and cellulose-derived biochars during direct graphitization under ultra-high temperatures was intensively investigated.
Chao Chen   +10 more
doaj   +1 more source

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   +1 more source

Construction of the hierarchical porous biochar with an ultrahigh specific surface area for application in high-performance lithium-ion capacitor cathode

open access: yesBiochar, 2023
Biochar with a highly accessible specific surface area can display a higher performance when it is used as the cathode of lithium-ion capacitors. Facing the complex composition and diversity of biomass precursors, there is a lack of a universally ...
Haotian Zhu   +6 more
doaj   +1 more source

Effect of olive leaf (Olea europaea L.) extract addition to broiler diets on the growth performance, breast meat quality, antioxidant capacity and caecal bacterial populations

open access: yesItalian Journal of Animal Science, 2022
This study aims to evaluate the effect of olive leaf extract (OLE) on growth performance, breast meat quality, antioxidant capacity and caecal microbiota regulation.
Pujun Xie   +3 more
doaj   +1 more source

Synthesis, structure analysis and antibacterial activity of N-[5-dehydroabietyl-[1,3,4]thiadiazol-2-yl]-aromatic amide derivatives

open access: yesJournal of Saudi Chemical Society, 2017
A series of N-[5-dehydroabietyl-[1,3,4]thiadiazol-2-yl]-aromatic amide derivatives were synthesized from dehydroabietic acid. Their structures were characterized by IR, 1H NMR, MS, elemental analysis and single crystal X-ray diffraction.
YanJie Cui   +5 more
doaj   +1 more source

Isolation of Sulfuretin and Butin from Rhus verniciflua Stokes Using Medium-pressure Liquid Chromatography and their Tyrosinase Inhibitory Effects

open access: yesBioResources, 2015
The aim of this study was to separate antityrosinase compounds of the ethyl acetate fraction from Rhus verniciflua Stokes using medium pressure liquid chromatography.
Hongxia Chen   +4 more
doaj   +1 more source

Preparation and Characterization of Urushiol Methylene Acetal Derivatives with Various Degrees of Unsaturation in Alkyl Side Chain

open access: yesInternational Journal of Polymer Science, 2015
Preparation of urushiol derivatives was carried out in response to the drug industry’s increasing demand for new synthetic anticancer agents. Urushiol methylene acetal derivatives were synthesized in high yields by reaction of urushiol with methylene ...
Chengzhang Wang   +6 more
doaj   +1 more source

Enzymatic Hydrolysis of Oleuropein from Olea europea (Olive) Leaf Extract and Antioxidant Activities

open access: yesMolecules, 2015
Oleuropein (OE), the main polyphenol in olive leaf extract, is likely to decompose into hydroxytyrosol (HT) and elenolic acid under the action of light, acid, base, high temperature.
Jiao-Jiao Yuan   +4 more
doaj   +1 more source

Effect of Variety and Maturity Index on the Physicochemical Parameters Related to Virgin Olive Oil from Wudu (China)

open access: yesFoods, 2022
Physical parameters (i.e., extraction yield, oil content), chemicals (i.e., fatty acids, phenolics) and oxidative stability associated with virgin olive oil (VOO) from ten varieties in Wudu, China, were analyzed as a function of maturity index and ...
Fengxia Tang   +6 more
doaj   +1 more source

The Pretreatment of Lignocelluloses With Green Solvent as Biorefinery Preprocess: A Minor Review

open access: yesFrontiers in Plant Science, 2021
Converting agriculture and forestry lignocellulosic residues into high value-added liquid fuels (ethanol, butanol, etc.), chemicals (levulinic acid, furfural, etc.), and materials (aerogel, bioresin, etc.) via a bio-refinery process is an important way ...
Xiaoyan Yin   +7 more
doaj   +1 more source

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