pieris/antioksidantas

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Pieris brassicae inhibits xanthine oxidase.

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The antioxidant potential of an aqueous extract obtained from Pieris brassicae larvae reared on Brassica oleracea L. var. costata DC was evaluated against 2,2-diphenyl-1-picrylhydrazyl radical and several reactive oxygen species. The results revealed an effective concentration-dependent protective

Antioxidant phenolic glycoside and flavonoids from Pieris japonica.

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A new phenolic glycoside, benzyl 2-hydroxy-4-O-β-D-glucopyranosyl-benzoate (1), along with nine known flavonoids, epicatechin-(2 → O → 7,4 → 8)-ent-epicatechin (2), bis-8,8'-catechinylmethane (3), quercetin (4), quercetin-3-O-α-L-arabinfuranoside (5), quercetin-3-O-α-L-rhamnopyranoside (6), astilbin

Targeted metabolite analysis and biological activity of Pieris brassicae fed with Brassica rapa var. rapa.

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For the first time, an insect-plant system, Pieris brassicae fed with Brassica rapa var. rapa, was tested for its biological capacity, namely, antioxidant (DPPH*, *NO, and O(2)*- radicals) and antimicrobial (bacteria and fungi) activities. Samples from the insect's life cycle (larvae, excrements,

Clinal variation in investment into reproduction versus maintenance suggests a 'pace-of-life' syndrome in a widespread butterfly

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Extreme weather events such as heat waves are predicted to increase in the course of anthropogenic climate change. Widespread species are exposed to a variety of environmental conditions throughout their distribution range, often resulting in local adaptation. Consequently, populations from

Metabolic and bioactivity insights into Brassica oleracea var. acephala.

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Seeds of Brassica oleracea var. acephala (kale) were analyzed by HPLC/UV-PAD/MSn-ESI. Several phenolic acids and flavonol derivatives were identified. The seeds of this B. oleracea variety exhibited more flavonol derivatives than those of tronchuda cabbage (Brassica oleracea var. costata), also

Kale extract increases glutathione levels in V79 cells, but does not protect them against acute toxicity induced by hydrogen peroxide.

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This study aims to evaluate the antioxidant potential of extracts of Brassica oleracea L. var. acephala DC. (kale) and several materials of Pieris brassicae L., a common pest of Brassica cultures using a cellular model with hamster lung fibroblast (V79 cells) under quiescent conditions and subjected

Tolerance of Novel Toxins through Generalized Mechanisms: Simulating Gradual Host Shifts of Butterflies.

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Organisms encounter a wide range of toxic compounds in their environments, from chemicals that serve anticonsumption or anticompetition functions to pollutants and pesticides. Although we understand many detoxification mechanisms that allow organisms to consume toxins typical of their diet, we know

Conserved chemosensory proteins in the proboscis and eyes of Lepidoptera.

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Odorant-binding proteins (OBPs) and chemosensory proteins (CSPs) are endowed with several different functions besides being carriers for pheromones and odorants. Based on a previous report of a CSP acting as surfactant in the proboscis of the moth Helicoverpa armigera, we revealed the presence of

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