scholarly journals EFFECTIVENESS OF SOME PLANT POWDERS AND BIOINSECTICIDES AGAINST Phthorimaea operculella (ZELLER.) (LEPIDOPTERA : GELECHIIDAE) ON SOME POTATO CULTIVARS

2011 ◽  
Vol 2 (4) ◽  
pp. 475-480
Author(s):  
Neama Abd El-Hamed ◽  
H. Shaalan ◽  
Farha Fargalla
Keyword(s):  
Potato Cultivars ◽  
Phthorimaea Operculella ◽  
Plant Powders

scholarly journals Comparative Life Tables of the Potato Tuberworm,Phthorimaea operculella, on Leaves and Tubers of Different Potato Cultivars

2014 ◽  
Vol 14 (42) ◽  
pp. 1-11 ◽  
Author(s):  
Ali Golizadeh ◽  
Nader Esmaeili ◽  
Jabraeil Razmjou ◽  
Hooshang Rafiee-Dastjerdi
Keyword(s):  
Life Tables ◽  
Potato Cultivars ◽  
Phthorimaea Operculella ◽  
Potato Tuberworm

Improvement of cytoprotective and antioxidant activity of Rosa canina L. and Salix alba L. by controlled differential sieving process against H2O2-induced oxidative stress in mouse primary splenocytes

2017 ◽  
Vol 87 (3-4) ◽  
pp. 191-200 ◽  
Author(s):  
Nidhal Soualeh ◽  
Aliçia Stiévenard ◽  
Elie Baudelaire ◽  
Rachid Soulimani ◽  
Jaouad Bouayed
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Biological Activities ◽  
Good Alternative ◽  
Activity Levels ◽  
Salix Alba ◽  
Rosa Canina ◽  
Free Process ◽  
Plant Powders ◽  
Sieving Process

Abstract. In this study, cytoprotective and antioxidant activities of Rosa canina (RC) and Salix alba (SA), medicinal plants, were studied on mouse primary splenocytes by comparing Controlled Differential Sieving process (CDSp), which is a novel green solvent-free process, versus a conventional technique, employing hydroethanolic extraction (HEE). Thus, preventive antioxidant activity of three plant powders of homogeneous particle sizes, 50–100 µm, 100–180 µm and 180–315 µm, dissolved directly in the cellular buffer, were compared to those of hydroethanolic (HE) extract, at 2 concentrations (250 and 500 µg/mL) in H2O2-treated spleen cells. Overall, compared to HE extract, the superfine powders, i. e., fractions < 180 µm, at the lowest concentration, resulted in greater reactive oxygen species (ROS) elimination, increased glutathione peroxidase (GPx) activity and lower malondialdehyde (MDA) production. Better antioxidant and preventive effects in pre-treated cells were found with the superfine powders for SA (i. e., 50–100 µm and 100–180 µm, both p < 0.001), and with the intermediate powder for RC (i. e., 100–180 µm, p < 0.05) versus HE extract. The activity levels of catalase (CAT) and superoxide dismutase (SOD) in pretreated splenocytes exposed to H2O2, albeit reduced, were near to those in unexposed cells, suggesting that pretreatment with the fine powders has relatively restored the normal levels of antioxidant-related enzymes. These findings supported that CDSp improved the biological activities of plants, avoiding the use of organic solvents and thus it could be a good alternative to conventional extraction techniques.

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