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Title: HIGH YIELDS OF CYCLODEXTRIN FROM CONVERSION OF STARCH IN THE PRESENCE OF A DEBRANCHING ENZYME

Author
item Rendleman Jr, Jacob

Submitted to: American Chemical Society Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 8/25/1996
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: In the presence of pullulanase and a suitable complexant, starch can be converted by cyclodextrin (CD) glucanotransferase into CD in yields considerably higher than those obtained in the absence of pullulanase. Extent of yield enhancement is dependent upon temperature, type of starch, and kind of complexant. Highest yields are generally attained by use of low temperature (15-25 deg C) and highly branched starches. At 25 deg C and pH 7, with cyclodecanone as complexant, 91-92% yields of beta-CD are obtainable from amylopectin, waxy maize starch, and tapioca starch. Yields of beta-CD from potato, rice, wheat, oat, and ordinary corn starch are in the range of 81-87%. At 15 deg C with 1-decanol as complexant, amylopectin can be converted into alpha-CD in 84% yield. At 40 deg C with cyclotridecanone, a 71% conversion of amylopectin into gamma-CD is attainable.