Instant Access to the Journals You Need

for just $40 per month.

Start Your Free Trial




Receive: RSS Feeds, eTOCs, free email alerts (when new articles cite this article), more» Information about commercial reprint orders: To subscribe to to another ASM Journal go to: DON SCOTT1 AND L. R. HEDRICK Biology Department, Illinois Institute of Technology, Chicago, Illinois Received for publication November 27, 1951 The hydrolysis of soluble starch by the amylase of Clostridium acetobutylicum was first reported by Johnston and Wynne (1935). These investigators followed the action of the amylase by determining the changes in viscosity and in the total reducing value of the digest. Unfortunately, Johnston and Wynne did not present their experimental results, but only various "factors" calculated from these results plus a mention of the analytical methods used. Since they did not recognize the existence of a maltase in their preparations and since the ratio of amylase to maltase is not a constant from one preparation to another, the quantitative conclusions reached by these authors must be held subject to confirmation. The presence of the maltase in cell free filtrates was recognized and the maltase and amylase studied by Hockenhull and Herbert (1945). These authors described a method for purifying amylase but failed to obtain it free of
Loading next page...

You're reading a free preview. Subscribe to read the entire article.

And millions more from thousands of peer-reviewed journals, for only $40/month.

Start Your Free Trial

What content is in DeepDyve?

  • Read and share from thousands of the leading scholarly journals from Springer, Elsevier, Nature, IEEE, Wiley-Blackwell and more.
  • All the latest content is available, no embargo periods.

Rent Scholarly Articles?

  • Read the full article in your browser.
  • Access all of your rentals from the cloud anywhere you have an internet connection.
  • Beautiful reading experience – Full charts and figures, just like the PDF.
  • Read as much as you'd like - whenever you'd like.

Happy Users

“In one word renting from DeepDyve is FANTASTIC!!! ... 99% of the time I only need access to an article for a month or so, so renting the articles is perfect for me.”

Adam S.

“Thanks for a great service! For an unaffiliated science blogger like myself this is like a dream come true.”

Seppo P.

“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”

Daniel C.

“Let me seize this opportunity and congratulate you on the service you are rendering to the scientific community.”

Joao B.