Different fractions of SA for free radicals of 1, 1-diphenyl 1-2-picryl-hydrazyl (DPPH) showed remarkable scavenging activities (Figure 1 ) and Table 2 . (biomedcentral.com)
The qualitative and quantitative antioxidant tests were performed using the DPPH method (2.2 diphenyl-1-picryl hydrazil) and ferric reducing antioxidant power (FRAP). (bvsalud.org)
The ethanolic extract of the leaves of C. argyrophylloides manifested antioxidant action in the quantitative DPPH test with a significant bioactivity of 84.70 AAO% in 500 µg/mL, with an EC50 of 236.79. (bvsalud.org)
Scavenge2
The free radical-housing potential was analyzed by testing these coumarins' ability to scavenge DDPT and hydroxyl harmful radicals. (jmchemsci.com)
The SA extracts presented a remarkable capacity to scavenge all the tested reactive species with IC 50 values being found at the μg ⁄ ml level. (biomedcentral.com)
Chemicals2
DTH responses in the skin can also occur as contact hypersensitivity (CH) to certain chemicals, including nickel, dinitrochlorobenzene (DNCB), and picryl chloride. (medscape.com)
Keywords Allergy Æ Hypersensitivity Æ Screening tests Æ many chemicals can produce irritant contact dermatitis. (cdc.gov)
Antioxidant2
The objectives of this work were to investigate the antioxidant and antiproliferation property of crude extracts from different tissues of water spinach in comparison with chemical compounds such as butylate hydroxyltoluene or reduced glutathione and the level of inhibition of the growth of cancer cells in a series of in vitro tests. (sinica.edu.tw)
Antioxidant activity was assessed using the 2,2-diphenyl-1-picryl-hydrazyl assay and phytochemical screening was carried out using standard procedures. (biomedcentral.com)
Extract3
Three concentrations (25 µl, 50 µl, and 100 µl) of the extract were tested. (bvsalud.org)
Results The identification and assessment of the antimicrobial activity of lycopene extract, vitamin E extract, and their combination revealed the greatest efficacy at the highest concentration (100 µl) against all tested microbial strains. (bvsalud.org)
This cream is then examined and stability test is performed, physicochemical reactions are done to determine chemical constituents present in the extract. (ajrconline.org)
Skin2
Positive responses require the subject's exposure to the Ag at least 4-6 weeks prior to skin testing. (medscape.com)
Detection of immunologically sensitized isocyanate workers by RAST and intracutaneous skin tests. (cdc.gov)
Type1
CMI manifests as delayed type cellular immune responses as typically seen in Mantaux test. (medscape.com)
Salmonella1
Genetic Toxicity Evaluation of Picryl Chloride in Salmonella/E.coli Mutagenicity Test or Ames Test. (nih.gov)
Sensitivity3
IL-2 influences the balance between immunity and unresponsiveness in the picryl (TNP) contact sensitivity system by blocking the development or action of an Lyt-2+, I-J+ T suppressor cell. (krakow.pl)
T suppressor efferent circuit which affects contact sensitivity to picryl chloride: the late-acting, second nonspecific T suppressor factor bears I-A determinants which are responsible for the I-A genetic restriction in its interaction with its target cell. (krakow.pl)
Control of suppressor cell activity: autoanti-idiotype B cells produced by painting with picryl chloride inhibit the T-suppressor cell which blocks the efferent stage of contact sensitivity. (krakow.pl)
Activity3
Using the Diphenyl Picryl Hydrazyl (DPPH) assay, antioxidant activity of extracts was determined. (ac.ir)
Disc diffusion method was employed for antimicrobial activity testing. (ac.mw)
Among all tested compounds the highest activity was detected for scutalpin A, with IC50 values of 21.35 and 23.9. (bas.bg)
Cellular1
CMI manifests as delayed type cellular immune responses as typically seen in Mantaux test. (medscape.com)
Methods1
These methods were tested and validated for various parameters according to ICH guidelines. (ajrconline.org)
Animal2
Two serum-derived human monoclonal IgMs (sHIgM) were isolated and tested in animal models mimicking distinctive neurological diseases. (medscape.com)
Current concepts and approaches on animal test alternatives. (cdc.gov)
Human1
Twelve natural neo-clerodane diterpenes, isolated from three Scutellaria (Labiatae) species, were tested for cytotoxicity on two cell lines, from human tumors of the lung designated as H1299 and normal cells from a navel string (HUVEC), using the MTT (3-/4,5-dimethylthiazol-2-yl/-2,5-diphenyltetrazolium bromide) method. (bas.bg)