expressão da alfa e beta amilase durante a ... - Deag.ufcg.edu.br
expressão da alfa e beta amilase durante a ... - Deag.ufcg.edu.br
expressão da alfa e beta amilase durante a ... - Deag.ufcg.edu.br
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72 Expressão <strong>da</strong> <strong>alfa</strong> e <strong>beta</strong> <strong>amilase</strong> <strong>durante</strong> a germinação de ceva<strong>da</strong> Santos et al.<<strong>br</strong> />
<strong>beta</strong> <strong>amilase</strong> e encerrar a germinação é<<strong>br</strong> />
fun<strong>da</strong>mental para atingir bons resultados na<<strong>br</strong> />
maltagem. Para Georg-kramer et al. (2000)<<strong>br</strong> />
muitas empresas produtoras de malte vêm<<strong>br</strong> />
tentando r<strong>edu</strong>zir o período de germinação no<<strong>br</strong> />
processo de maltagem, o que permitiriam a<<strong>br</strong> />
r<strong>edu</strong>ção de despesas e a maltagem de uma<<strong>br</strong> />
quanti<strong>da</strong>de de grãos em menos tempo. O<<strong>br</strong> />
processo de maltagem induz a germinação e<<strong>br</strong> />
assegura o crescimento <strong>da</strong> semente com<<strong>br</strong> />
produção de <strong>beta</strong> <strong>amilase</strong> de relevante<<strong>br</strong> />
influência no poder diastático.<<strong>br</strong> />
CONCLUSÃO<<strong>br</strong> />
Existe sempre uma tendência de aumento<<strong>br</strong> />
na ativi<strong>da</strong>de <strong>da</strong>s duas enzimas.<<strong>br</strong> />
A <strong>beta</strong> <strong>amilase</strong> apresenta maiores<<strong>br</strong> />
ativi<strong>da</strong>des que a <strong>alfa</strong> <strong>amilase</strong> nas condições<<strong>br</strong> />
testa<strong>da</strong>s<<strong>br</strong> />
Os maiores aumentos de ativi<strong>da</strong>de <strong>da</strong> <strong>alfa</strong><<strong>br</strong> />
<strong>amilase</strong> acontecem após 24 e 72 horas de<<strong>br</strong> />
germinação. Já para <strong>beta</strong> <strong>amilase</strong> os maiores<<strong>br</strong> />
incrementos <strong>da</strong> ativi<strong>da</strong>de específica ocorrem<<strong>br</strong> />
após 24, 32, e 64 horas de germinação.<<strong>br</strong> />
O estudo dos maiores aumentos dessa<<strong>br</strong> />
enzima em função do faixa de tempo de<<strong>br</strong> />
germinação forneceu informações necessária<<strong>br</strong> />
para produção de malte com teores enzimáticos<<strong>br</strong> />
variados, podendo ser utilizado na hidrólise de<<strong>br</strong> />
amidos de varias origens.<<strong>br</strong> />
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