1.
Biotechnol Lett
; 32(2): 249-53, 2010 Feb.
Artículo
en Inglés
| MEDLINE
| ID: mdl-19821076
RESUMEN
Ultrasonic resonator technology (URT) was compared with the well established UV-Vis/ninhydrin assay to estimate protease activities in defined buffer systems. Hydrolysis of casein was measured using subtilisin, trypsin, halophilic protease from Haloferax mediterranei and Bacillus lentus alkaline protease. Sensitivity, reproducibility, working range as well as the limit of detection and the limit of quantification were comparable for both methods. Salt concentrations (0.5 M NaCl) interfered with the URT method. The quantification of protease activity by URT was possible when the product concentration measured by the UV-Vis/ninhydrin assay was correlated to the corresponding ultrasonic velocity signals.
Asunto(s)
Algoritmos , Caseínas/química , Técnicas de Química Analítica/métodos , Péptido Hidrolasas/análisis , Péptido Hidrolasas/química , Sonicación/métodos , Activación Enzimática
2.
Chembiochem
; 5(1): 132-5, 2004 Jan 03.
Artículo
en Inglés
| MEDLINE
| ID: mdl-14695524