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Título: | Three-phase partitioning and proteins hydrolysis patterns of alkaline proteases derived from fish viscera |
Autor: | Ketnawa, Sunantha; Benjakul, Soottawat; Martínez Álvarez, Óscar CSIC ORCID CVN ; Rawdkuen, Saroat | Palabras clave: | Three-phase partitioning Trypsin Protein hydrolysates Fish viscera Alkaline proteases |
Fecha de publicación: | 2014 | Editor: | Elsevier | Citación: | Separation and Purification Technology 132: 174- 181 (2014) | Resumen: | In this study, the recovery alkaline proteases from farmed giant catfish viscera were isolated by using three-phase partitioning (TPP). Factors affecting partitioning efficiency such as salts, solvent types, pH, and incubation temperatures were studied. Furthermore, the application of extracted alkaline proteases on proteins hydrolysis was also determined. The system consisted of crude enzyme extract:t-butanol 1:0.5 (w/v), 50% sodium citrate, pH 8.0 with incubation temperature of 25 °C provided the highest enzyme recovery (220%). The smear protein bands with molecular weight of 20, 24, and 215 kDa of TPP fractions appeared on the protein stained gel. Two major clear zones (24 and 130 kDa) in the interphase were observed on casein-substrate gel electrophoresis. Extracted alkaline proteases showed relatively high effective in protein hydrolysis. As a result, TPP provided high enzyme recovery and could be applied to other enzymes. The obtained alkaline proteases can be further applied in preparation of protein hydrolysates. © 2014 Elsevier B.V. All rights reserved. | URI: | http://hdl.handle.net/10261/102246 | DOI: | 10.1016/j.seppur.2014.05.006 | Identificadores: | doi: 10.1016/j.seppur.2014.05.006 issn: 1383-5866 |
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Three-phase partitioning and proteins.pdf | 735,75 kB | Adobe PDF | Visualizar/Abrir |
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