Sies H. Antioxidant activity of carotenoids - Stahl () Citation Context ...nation relies on the well known function of carotenoids in photoprotection, either as reactive-oxygen species (ROS) scavengers or as ultra-violet (UV)-screening compounds (Cockell and Knowland, 1999; =-=Stahl and Sies...
carotenoidsdidnotshowanyDPPH Å scavengingactivity.Tostandardisetherelativecontributionof theassaysused,weightedmeansofthevaluesobtainedinaTEAC,FRAP,DPPHandLPSCassaywerecal- culated.Thisstrategywasusedtoassesstheantioxidantcapacityofseveraljuicesandoilsamples.The highestlipophilicantioxidantcapacityinallassayswas...
Carotenoids are a family of effective active oxygen scavengers, which can reduce the danger of occurrence of chronic diseases such as cardiovascular disease, cataract, cancer, and so on. The quantitative structure-activity relationship (QSAR) equation between carotenoids and antioxidant activity was estab...
Use of Photochemiluminescence for the Determination of Antioxidant Activities of Carotenoids and Antioxidant Capacities of Selected Tomato Products The purpose of this study was to compare the antioxidant activity of carotenoids to that of α-tocopherol by using a photochemiluminescence method (PCL). C....
When BODIPY 665/676 was replaced by 4,4-difluoro-5-(4-phenyl-1,3-butadienyl)-4-bora-3a, 4a-diaza-s-indacene-3-undecanoic acid (BODIPY 581/591 C(11)) as an indicator, astaxanthin showed the highest antioxidant activity toward peroxyl radicals. The relative reactivities of Trolox, ...
Organic residue and Conventional Residue showed higher levels of total carotenoids, provitamin A, and antioxidant activity by one method. Conventional Residue exhibited higher antioxidant activity, as determined quantitatively and qualitatively by another method, and higher levels of carotenoids in the ...
The evaluation of the antioxidant activity is a common way of accessing the functionality of foodstuffs. This activity is conferred by the different bioactive nutrients (including ascorbic acid, tocopherols, carotenoids, Zn, and Fe) and nonnutrients (such as phenolic acids, flavonoids, and isothiocyan...
Deinoxanthin (DX) is a unique carotenoid synthesized by Deinococcus radiodurans, one of the most radioresistant organisms known. In comparison with other carotenoids, DX was proven to exhibit significantly stronger reactive oxygen species (ROS)-scavenging activity, which plays an important role in the...
. The antioxidant activity of lutein was examined by using the photochemiluminescence (PCL) assay and the β-carotene–linoleic acid model system (β-CLAMS). Lutein showed a greater antioxidant activity than the other two common carotenoids, β-carotene and lycopene. The mutagenicity and anti-...
The contents of bioactive compounds (Vitamin C (Vc), carotenoids, total phenolics, phenolic profiles and capsaicinoids) and antioxidant activities (reducing power, DPPH-scavenging activity and lipid peroxidation inhibition ability) of nine peppers from Yunnan province China, belonging to seven cultivars,...