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| ALVES,CARLA; COSTA,EDUARDA; SOFIATTI,JESSICA R.; FORTE,CESAR T.; WINTER,FÁBIO L.; HOLZ,CINTHIA M.; KAIZER,ROSILENE R.; GALON,LEANDRO. |
| ABSTRACT Most herbicides applied in crop field, stay in the soil for a period, affecting next crop or even the plants using as green manure. Nowadays, the use of herbicides grow to increase productivity, mainly in the grain producing region north of Rio Grande do Sul state. The objective of this study was to evaluate the effects of herbicides fomesafen and sulfentrazone on antioxidant system in Avena sativa1, Vicia sativa2, Raphanus sativus and Lupinus albus. The plants were exposed to varying concentrations of fomesafen3 (0, 0.125, 0.25 and 0.5 kg ha -1) and sulfentrazone (0, 0.3, 0.6 and 1.2 kg ha-1). For this, the activities of, ascorbat peroxidase, catalase and guaiacol enzymes were analyzed, and the levels of MDA were quantificated. Fomesafen and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Catalase; Enzymes; Agricultural plants; PROTOX system. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401533 |
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| GOLUNSKI,SIMONE; SILVA,MARCELI F.; MARQUES,CAMILA T.; ROSSETO,VANUSA; KAIZER,ROSILENE R.; MOSSI,ALTEMIR J.; RIGO,DIANE; DALLAGO,ROGÉRIO M.; DI LUCCIO,MARCO; TREICHEL,HELEN. |
| ABSTRACT The present study evaluated the purification of inulinase by changing the ionic strength of the medium by addition of NaCl and CaCl2 followed by precipitation with n-propyl alcohol or iso-propyl alcohol. The effects of the concentration of alcohols and the rate of addition of alcohols in the crude extract on the purification yield and purification factor were evaluated. Precipitation caused an activation of enzyme and allowed purification factors up to 2.4-fold for both alcohols. The purification factor was affected positively by the modification of the ionic strength of the medium to 0.5 mol.L-1 NaCl before precipitation with the alcohol (n-propyl or iso-propyl). A purification factor of 4.8-fold and an enzyme yield of 78.1 % could be achieved by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inulinases; Ionic strength; Precipitation; Low cost.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100057 |
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