Glycemic Response to Corn Starch Modified with Cyclodextrin Glycosyltransferase and its Relationship to Physical Properties.
Corn starch was modified with cyclodextrin glycosyltransferase (CGTase) below the gelatinization temperature. The porous granules with or without CGTase hydrolysis products may be used as an alternative to modified corn starches in foods applications. The amount and type of hydrolysis products were determined, containing mainly β-cyclodextrin (CD), which will influence pasting behavior and glycemic response in mice. Irregular surface and small holes were observed by microscopic analysis and differences in pasting properties were observed in the presence of hydrolysis products. Postprandial blood glucose in mice fed gelatinized enzymatically modified starch peaked earlier than their ungelatinized counterparts. However, in ungelatinized enzymatically modified starches, the presence of β- CD may inhibit the orientation of amylases slowing hydrolysis, which may help to maintain lower blood glucose levels. Significant correlations were found between glycemic curves and viscosity pattern of starches.
Institute of Agrochemistry and Food Technology (IATA-CSIC), Avenida Agustin Escardino, 7, 46980, Paterna, Valencia, Spain.|Healthy Processed Foods Research, Agricultural Research Service, U.S. Department of Agriculture, Albany, California, 94710, USA.
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Healthy Processed Foods Research, Agricultural Research Service, U.S. Department of Agriculture, Albany, California, 94710, USA.
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Institute of Agrochemistry and Food Technology (IATA-CSIC), Avenida Agustin Escardino, 7, 46980, Paterna, Valencia, Spain. crosell@iata.csic.es.
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Rosell
D000681:Amylases / Q000037:antagonists & inhibitors / Q000378:metabolism; D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D005951:Glucose Tolerance Test; D005964:Glucosyltransferases / Q000378:metabolism*; D038321:Glycemic Index; D006868:Hydrolysis; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D008855:Microscopy, Electron, Scanning; D019518:Postprandial Period; D013213:Starch / Q000737:chemistry*; D013696:Temperature; D014783:Viscosity; D047392:beta-Cyclodextrins / Q000737:chemistry
D001786:Blood Glucose; D047392:beta-Cyclodextrins; D013213:Starch; D005964:Glucosyltransferases; C019963:cyclomaltodextrin glucanotransferase; D000681:Amylases
CGTase; Corn starch; Cyclodextrins; Enzymatic modification; Glucose response