bạn có thể vào đêy tham khảo nè ^^ mình đọc cũng thấy hay ^^
http://vi.scribd.com/doc/46640331/Enzyme-Amylase-Ph%C6%B0%C6%A1ng-Phap-S%E1%BA%A3n-Xu%E1%BA%A5t-Va-%E1%BB%A8ng-D%E1%BB%A5ng
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