Starch gelatinization and pasting gelation and uglification
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Starch Gelatinization and Pasting, Gelation, and Uglification. Go to Slide Show mode and click to begin. Starch granules contain both linear amylose and branched amylopectin . You are here Turn heat on. Timeline. Raw, uncooked starch granules heated in water. Swelling is evident.

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Starch gelatinization and pasting gelation and uglification l.jpg
Starch Gelatinization and Pasting, Gelation, and Uglification

Go to Slide Show mode and click to begin


Slide2 l.jpg

Starch granules contain both Uglificationlinear amylose

and branched amylopectin.


Timeline l.jpg

You are here Uglification

Turn heat on

Timeline


Slide4 l.jpg

Raw, uncooked starch granules Uglification

heated in water


Slide5 l.jpg

Swelling is evident Uglification


Slide6 l.jpg

Notice loss of Uglificationamylose from the granules


Slide7 l.jpg

Some granules have collapsed. Uglification

Gelatinization and pasting are complete


Timeline8 l.jpg

You are here Uglification

Turn heat off

Start to cool

Timeline

gelatinization


Gelation l.jpg
Gelation Uglification


Slide10 l.jpg

Now we start to cool. Uglification


Slide11 l.jpg

Notice areas of association. These are Uglification

called junction zones.


Slide12 l.jpg

This picture is not yet complete as we haven’t Uglification

accounted for the water in the system.


Slide13 l.jpg

water Uglification

water

water

water

water

water

This is a starch gel


Timeline14 l.jpg

gelatinization Uglification

You are here

Ideal texture

Timeline

gelation


Uglification l.jpg
Uglification Uglification


Slide16 l.jpg

WATER Uglification

This picture ignores swollen and collapsed

granules.

Junction zones will naturally enlarge over time or

in response to processes such as freezing.


Slide17 l.jpg

WATER Uglification

+ WATER of SYNERESIS that has been

squeezed out of the gel structure

The texture gets very ugly when this happens.


Timeline18 l.jpg

gelatinization Uglification

gelation

You are here

Ugly texture

Syneresis

Timeline

Retrogradation

uglification


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