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Comparison of light microscopy and polymerase chain reaction for the detection of haemoparasites in cattle in Nigeria

100%
Happi A. N., Osifade O., Oluniyi P. E., Ogunro B. N.
Acta Parasitologica
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2020
|
tom 65
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nr 1
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Comparative evaluation of the antioxidant potential of Hericium erinaceus, Hericium americanum and Hericium coralloides

84%
Atila F.
Acta Scientiarum Polonorum. Hortorum Cultus
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2019
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tom 18
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nr 6
The aim of this work was to determine the total phenolic content (TPC) and the antioxidant activity of methanol extracts of Hericium erinaceus, Hericium americanum and Hericium coralloides, including free radical scavenging method (DPPH), ferric reducing antioxidant power (FRAP) and radical cation scavenging method (ABTS). Hericium spp exhibited moderate to high antioxidant activity. The highest TPC (3.27 ±0.01 mg GAE g–1) and antioxidant activity values (17.0 ±0.68 mmol TE g–1 in FRAP; EC 50 = 4.12 ±0.12 mg mL –1 in DPPH •; EC 50= 2.83 ± 0.10 mg mL–1in ABTS•+ ) were found for methanol extracts of H. coralloides. The TPC and antioxidant activity of H. erinaceus isolates varied from strain to strain. H. americanum possessed considerably lower total phenolic content (2.31 ±0.01 mg GAE g–1) and antioxidant activity (10.5 ±0.59 mmol TE g–1 in FRAP; EC 50 = 7.82 ±0.09 mg mL –1 in DPPH•; EC 50 = 6.36 ± 0.12 mg mL–1 in ABTS •+) than H. coralloides and H. erinaceus. A high correlation was determined between TPC and ABTS •+( r2= 0.855), DPPH•(r2= 0.969) and FRAP (r2 = 0.942). According to results obtained in the present study, Hericium spp., especially H. coralloides and some of H. erinaceus isolates, might be promising natural source of antioxidants for food and pharmaceutical industry.
3
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Comparative evaluation of preservation and growth of spruce climatypes based on long-term provenance trials in Russia

67%
Nikolaeva M. A., Faizulin D. K., Potokin A. P., Jamaleev O. A.
Folia Forestalia Polonica. Series A . Forestry
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2014
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tom 56
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nr 1
The article presents the results of provenance trials carried on the Norway spruce (Picea abies (L.) Karst.), the Siberian spruce (Picea obovata Ledeb.) and hybrid forms of these two species. The trails were laid in 1977–1978 according to wide-scale All-Union program of 1972 year (Prokazin 1972) in the Arkhangelsk, Vologda, Leningrad regions and the Republic of Bashkortostan. The results of the most recent inventory of provenance trials as well as analyses of preservation and growth of spruce progenies with different geographical origin are presented. One of the main factors affecting spruce progeny survival was north-south distance between seed collection locality and test locality. At the time of the study (2010–2012), in the Vologda and Arkhangelsk regions, spruce progeny preservation was higher in the case of mother stands distant to the north. On the contrary, in the Leningrad region and the Republic of Bashkortostan, preservation of northern climatypes’ progenies was lower during the whole period of plantations’ growth. With the change of seed collection locality towards west-east direction, a correlation between progeny preservation and geographical origin factors was non-existent (Vologda, Arkhangelsk regions) or weak (Leningrad region, Republic of Bashkortostan). The most successful growth and the lowest preservation were observed under the conditions of sharp-continental climate, in provenance trials carried out in the Bashkortostan Republic. In the north of Russia, in provenance trials in the Arkhangelsk region there was observed the slowest spruce growth. On the whole, at all the objects under investigation, Norway spruce progenies and hybrid forms with Norway spruce properties showed better growth parameters when compared to those of the Siberian spruce.
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