Starch Gelatinization Explained DSC Analysis & Properties

Added: 2026-05-05

[00:00:01]Our next application is on starch gelatinization.

[00:00:06]Food cooking and food processing conditions depends strongly upon the gelatinization property of starches.

[00:00:14]Starch gelatinization is the disruption of molecular order within the starch granule.

[00:00:21]It results in a granular swelling, crystallite melting, loss of birefringence, viscosity development, and solubilization.

[00:00:31]A variety of analytical techniques have been applied to study starch gelatinization.

[00:00:37]DSC is the easiest way of evaluating the temperature and enthalpy of the gelatinization reaction by observing the endothermic reaction.

[00:00:52]In general, starch composition influences its gelatinization behavior, and it differs depending on the botanical origin of the starch granule.

[00:01:03]The gelatinization onset temperature and the enthalpy increase as the length of the amylopectin chain increases, which is related to the crystallinity of the starch granule.

[00:01:16]On the other hand, the gelatinization end temperature increases as the amount of amylose increases, which is related to the amorphous content of the starch granule.

[00:01:29]The DSC gelatinization data provides essential parameters, which are related to the end-use properties of the starches.

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