Liha töötlemine
exceed 20 minutes. to stainless steel, are usually used to remove
To be effective, detergents should be able heavy scale deposits found on steam-produc-
to wet and penetrate soil, emulsify fat, dis- ing equipment or boilers. Organic acids, such
perse and suspend soil, and counteract water as citric and hydroxyacetic acid, are less
hardness. In addition, they should prevent corrosive and are used in manual cleaning
soil from redepositing on clean surfaces and formulations.
be noncorrosive to equipment. No single In practice, alkaline and acid cleaning
detergent combines all these traits, so formu- substances should be used alternatively. The
lations of compounds are tailored for each alkaline agent should be the substance used
type of cleaning operation. Commercially for routine cleaning, but every few days an
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