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Start Over Subject anthokyany

1. Different responses of young and expanded lettuce leaves to fungicide Mancozeb: chlorophyll fluorescence, lipid peroxidation, pigments and proline content

Creator:
Dias, M. C., Figueiredo, P., Duarte, I. F., Gil, A. M., and Santos, C.
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
fotosyntéza, toxicita, anthokyany, dithiokarbamáty, photosynthesis, toxicity, anthocyanins, dithiocarbamates, photosynthetic efficiency, Mancozeb, fungicide toxicity, 2, and 581
Language:
Multiple languages
Description:
This work aimed to study the effects of commercial doses of the fungicide, Mancozeb, on the photosynthetic apparatus of lettuce young leaves (YL) and expanded leaves (EL). Seven days after Mancozeb application, chlorophyll a fluorescence, pigment contents, lipid peroxidation, and proline content were evaluated. Independently of leaf age, Mancozeb treatment reduced the efficiency of photosystem II photochemistry, increased the nonphotochemical quenching and proline content, decreased pigment contents, and induced lipid peroxidation. Moreover, EL showed a more stable photosynthetic apparatus, less prone to oxidative damages compared with YL. The parameters measured proved to be good markers for the rapid and preliminary diagnosis of fungicide toxicity., M. C. Dias, P. Figueiredo, I. F. Duarte, A. M. Gil, C. Santos., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Effect of the daily ingestion of a purified anthocyanin extract from grape skin on rat serum antioxidant capacity

Creator:
Lionetto, M. G., Gordano, M. E., Calisi, A., Erroi, E., Nuccio, F. de, and Schettino, T.
Format:
print
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, anthokyany, anthocyanins, antioxidant capacity, ORAC, grape skin, serum, 14, and 612
Language:
English
Description:
The aim of this work was to study the effect of the daily ingestion of a purified anthocyanin extract from red grape skin on rat serum antioxidant capacity (ORAC) and its safety for the intestinal epithelium. The study was carried out in rats orally administered with the extract for 10 days in either normal physiological conditions or exposed to a pro-oxidant chemical (CCl4). The oral administration of the extract significantly (P<0.05) enhanced the ORAC va lue of the deproteinised serum of about 50 % after 10 days of ingestion. Anthocyanin administration was also able to reverse completely the decrease in the serum ORAC activity induced by the CCl4 treatment. Experiments with Ussing chamber mounted intestine allowed to exclude any toxicity of the extract for the intestinal epithelium. In conclusion, our results demonstrate that the purified anthocyanin extract from red grape skin e nhances the total antioxidant capacity of the serum in either normal physiological condition or during oxidative stress induction, revealing a protective role against the decrease in the serum antioxidant capacity induced by a pro-oxidant compound., M. G. Lionetto ... [et al.]., and Obsahuje bibliografii a bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public