2007
DOI: 10.1590/s1516-89132007000300020
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Partitioning optimization of proteins from Zea mays malt in ATPS PEG 6000/CaCl2

Abstract: This work aimed to establish the relationship between the compositions and pH of ATPS PEG 6000/CaCl

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Cited by 27 publications
(31 citation statements)
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“…The ATPS with sulphate as the phase-forming salt shown higher partition since the sulphate anion has the ability to promote hydrophobic difference between the phases through saltingout phenomena (Chia-Kai and Been 2006). Similar behaviour was observed in the literature for other systems (Patil and Raghavara 2007;Ferreira et al 2007;Yucekan and Onal 2011;Perumalsamy and Batcha 2011). The partitioning coefficient of proteins from Shrimp waste increases when the pH increases from 6 to 8 and maximum partition coefficient of 2.96 was achieved at pH 8 (Ramyadevi et al 2012).…”
Section: Effect Of Ph On Protein Partitioningsupporting
confidence: 76%
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“…The ATPS with sulphate as the phase-forming salt shown higher partition since the sulphate anion has the ability to promote hydrophobic difference between the phases through saltingout phenomena (Chia-Kai and Been 2006). Similar behaviour was observed in the literature for other systems (Patil and Raghavara 2007;Ferreira et al 2007;Yucekan and Onal 2011;Perumalsamy and Batcha 2011). The partitioning coefficient of proteins from Shrimp waste increases when the pH increases from 6 to 8 and maximum partition coefficient of 2.96 was achieved at pH 8 (Ramyadevi et al 2012).…”
Section: Effect Of Ph On Protein Partitioningsupporting
confidence: 76%
“…Silva et al (2007) ) were calculated for PEG1500 and sodium citrate ATPS at different PEG concentrations. The crude proteins (Zea mays malt) were partitioned from maize malt using PEG 6000/CaCl 2 system and the influence of phase composition and pH on the partition coefficient were studied and optimized through statistical method (Ferreira et al 2007). Further the α-and β-amylase enzymes from Zea mays malt were purified 130-fold in the salt rich phase by continuous extraction in a PEG/CaCl 2 ATPS (Biazus et al 2007).…”
Section: Introductionmentioning
confidence: 99%
“…Na sequência, a eluição das enzimas é feita com o NaCl 0,25M, fazendo com que estas se desprendam das resinas (o que faz aparecerem os pequenos picos), sendo assim purificadas. e guardado a 5 °C (BIAZUS et al, 2005a(BIAZUS et al, , 2005b(BIAZUS et al, , 2006a(BIAZUS et al, , 2006b(BIAZUS et al, , 2006c(BIAZUS et al, , 2007CURVELO-SANTANA, 2003;FERREIRA et al, 2007;SEVERO Jr. et al, 2007;TOLEDO et al, 2007).…”
Section: Adsorção Em Leito Expandidounclassified
“…Os resultados obtidos neste trabalho foram superiores aos obtidos por Curvelo-Santana (2003) e por Ferreira et al (2007), que purificaram as amilases de malte de milho com sistema bifásico aquoso PEG/CaCl 2 ; por Biazus et al (2007) e por Severo Jr. et al (2007), que purificaram as amilases de malte de milho usando extração líquido-líquido e processos de separação por membranas, respectivamente. O Fator de purificação na condição ótima da precipitação também foi superior aos obtidos por Aguilar et al (2000), que purificaram amilases de Lactobacillus manihotivorans por cromatografia em gel; que Blasquez et al (1998) e Furuya et al (1995 A Figura 5 apresenta a análise via eletroforese por SDS-PAGE com as amostras do malte de milho bruto e purificada por ALE combinada com a precipitação com álcool na condição de fracionamento a 50-80% a 20 °C, após passarem por microfiltração com membrana de 10 µm de diâmetro de poros, para eliminação da interferência salina.…”
Section: Conclusõesunclassified
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