6. 6
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6
Frying
is very
complex
The amounts depend on different physical and chemical parameters :
such as temperature,
warm up time,
oil type, food,
and finally, the equipment used.
1.Frying mechanism
7. 7
chemical reactions in the
frying food
gelatinization
of
starch
Maillard
denaturation
Of
protein
decrease
Of
moisture
ِدّیذساتهحلَل ػطح آة ؿذى
ِپَػت تـىیل
ثخبس خشٍج
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1.Frying mechanism
8. 8
One of the advantages of frying in comparison
with the other processes :
fast
heating
Uniformity
of the
product
1.Frying mechanism
9. 9
Types of
deep-fat frying
processes :
vacuum frying
Atmospheric
frying
(Traditional)
deep-fat frying
convection
(in the oil mass)
conduction
(inside the food)
ػشخوشدىػویكٍس ِغَط ػٌَاى تحتوشدىُهبدغزاییدسیهسٍغيخَساویدسدهبییًِمط اص ثبالتش
آة جَؽتؼشیفهیـَد.
1.Frying mechanism
10. 10
When a
product is
cooking in the
fryer, it is
covered with a
fine oil layer:
ثب هحلَل دهبی وبّؾوٌَوؼیَىطجیؼی
هحلَل ّبی ُحفش دس ثخبس فـبس وبّؾ
هحلَل فشج ٍ خلل داخل هَاد ِداًؼت وبّؾ
تغییشخبكیتتشهَفیضیىیهحلَل
، حشاستی ّذایت وبّؾتخلخل افضایؾ
ٍُیظ گشهبی ٍ سطَثتی هحتَای وبّؾ
وشدى ػشخ طی سٍغٌی هحتَای افضایؾ
1.Frying mechanism