Search results for "Antioxidant properties"

showing 2 items of 12 documents

Antioxidant properties of water-soluble gum from flaxseed hulls

2016

International audience; Soluble flaxseed gum (SFG) was extracted from flax (Linum usitatissimum) hulls using hot water, and its functional groups and antioxidant properties were investigated using infrared spectroscopy and different antioxidant assays (2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid (ABTS), reducing power capacity, and β-carotene bleaching inhibition assay), respectively. The antioxidant capacity of SFG showed interesting DPPH radical-scavenging capacity (IC50 SFG = 2.5 mg·mL(-1)), strong ABTS radical scavenging activity (% inhibition ABTS = 75.6% ± 2.6% at 40 mg·mL(-1)), high reducing power capacity (RPSFG = 5 mg·mL(-1)), and po…

Linum[SDV.BIO]Life Sciences [q-bio]/BiotechnologyProperties of waterAntioxidantPhysiologyDPPH[SDV]Life Sciences [q-bio]medicine.medical_treatmentClinical BiochemistryInfrared spectroscopy02 engineering and technologyflax hullBiochemistryArticlechemistry.chemical_compoundAigua Anàlisi0404 agricultural biotechnologymedicineOrganic chemistry[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process EngineeringFood scienceMolecular BiologyABTSbiologyPower capacity04 agricultural and veterinary sciencesCell Biology021001 nanoscience & nanotechnologybiology.organism_classification040401 food scienceantioxidant propertiesAntioxidant capacityflaxseed gumchemistryflax hull; flaxseed gum; antioxidant properties0210 nano-technology[SDV.AEN]Life Sciences [q-bio]/Food and Nutrition
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Characterization of softwood and hardwood lignoboost kraft lignins with emphasis on their antioxidant activity

2014

Fractionation of softwood and hardwood LignoBoost kraft lignins, using sequential extraction with organic solvents of increasing hydrogen-bonding ability (dichloromethane, n-propanol, and methanol), was carried out. Using SEC, analytical pyrolysis, FTIR and UV/VIS spectroscopy, and chemical analytical methods, four fractions were obtained and characterized in terms of their yield, composition, functionality, lignin structural features, and antioxidant properties. In tests with free radicals (ABTS●+, DPPH●, O2●-) and the ORAC (oxygen radical absorbance capacity) assay, the high radical scavenging capacity of the lignin’s soluble fractions was demonstrated. The antioxidant activity of the fra…

ORAC assayEnvironmental EngineeringSoftwoodABTSOxygen radical absorbance capacityLignoBoost kraft ligninDPPHAntioxidant propertieslcsh:Biotechnologytechnology industry and agricultureBioengineeringmacromolecular substancesFractionationDPPH●chemistry.chemical_compoundchemistryABTS●+lcsh:TP248.13-248.65HardwoodOrganic chemistryLigninSolvent fractionationWaste Management and DisposalKraft paperO2●- assays
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