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1

Microfungi in the soil beneath common oak and their effect on Armillaria occurrence

100%
Kwasna H.
Acta Mycologica
|
2003
|
tom 38
|
nr 1-2
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Antioxidant and DNA repair stimulating effect of extracts from Leonurus sibiricus against an induced oxidative stress and DNA damage in CHO cells

67%
Sitarek P., Skala E., Wysokinska H., Wielanek M., Szemraj J., Sliwinski T.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
|
2015
|
tom 96
|
nr 1
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effect of elicitors as stimulating substances on sensory quality traits in color sweet bell pepper (Capsicum annuum L. cv. Fascinato and Orangela) grown under greenhouse conditions

67%
Jimenez-Garcia S. N., Vazquez-Cruz M. A., Miranda-Lopez R., Garcia-Mier L., Guevara-Gonzalez R. G., Feregrino-Perez A. A.
Polish Journal of Food and Nutrition Sciences
|
2018
|
tom 68
|
nr 4
The effect of the application of salicylic acid (SA) and hydrogen peroxide (H2 O2 ) was evaluated on sensory quality traits of two commercial sweet bell pepper varieties, Fascinato and Orangela, by descriptive sensory evaluation, principal component analysis (PCA), and Multivariate Analysis of Variance (MANOVA). A sensory descriptive lexicon was established for the sweet pepper and an intensity score was assigned for 25 sensory attributes in all the samples. Such intensity score was performed by twelve trained panelists. Among the results it was shown that foliar application of elicitors to pepper crop produced signifi cant differences in sensory traits of the harvested fruits. MANOVA allowed detecting differences in aroma profi le among treatments and varieties, showing important changes depending on the combination of elicitors applied on each variety. The principal component analysis (PCA), showed that the PC1 explained 81.02%, while PC2 explained 9.24% of the variance in the results. A strong correlation between varieties and treatments 2 (36 mM H2 O2 ) and 4 (0.1 mM SA and 36 mM H2 O2 ) with PC1 was observed. Treatments 2 and 4 were related to changes in aroma and flavor traits. Fascinato was more susceptible to the effect of elicitor than Orangela. Therefore, elicitor combinations used in this experiment were capable to improve sensory quality of peppers, and not only promote an increase in shelf life as previous studies have shown.
4

The stimulative effect of hydrocortisone on photosynthetic pigments in the green alga Chlorella vulgaris Beijerinck

67%
Czerpak R., Bajguz A., Kalinowska J.
International Journal of Ecohydrology and Hydrobiology
|
2001
|
tom 01
|
nr 4
Studies carried out on the alga Chlorella vulgaris (Chlorophyceae) showed that hydrocortisone applied in a concentration range of 10-4 - 10-5 M has a stimulating effect on its growth, i.e. the content of fresh and dry mass, and on the chlorophyll and carotenoid contents. Hydrocortisone was found to have its greatest stimulative effect on the biochemical parameters analysed in a concentration of 5x10-5 M between the 15th and 20th day of the alga culture (with the exception of monoxy-xanthophylls). The strongest stimulation was noted in the content of: chlorophylls (a+b), from 184 % - 200 %, the total carotenoid pool, 170% - 190%, including carotenes stimulated from 193 % to 208 %, xanthophylls with 2 oxygen atoms in he molecule 171 % - 191 %, and richly oxidated xanthophylls 146 % -187 %. Maximum stimulation of the dry mass content was within the range of 138 % -151 % whereas the weakest stimulation was noted in the monoxy-xanthophylls 121 % - 125 % as compared with the control (100 %).The studies showed that hydrocortisone, as a typical representative of animal glucocorticoids, also occurring in some species of vascular plants and probably in thallophytes, when applied in the optimum concentration range 10-4 - 10-6 has a fairly intensive stimulative effect on the growth of C. vulgaris cells and their content of photosynthetic pigments, i.e. chlorophylls (a+b) and carotenoids especially carotenes and xanthophylls moderately rich in oxygen.
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