Temperature used for frying is determined mostly by
economic considerations & the requirements of the
product.
• At high temperatures (180–200ºC),
processing times are reduced & production rates are
increased.
cause accelerated deterioration of the oil
formation of free fatty acids
alter the viscosity,
flavour & colour of the oil and promote foaming.
• Acrelein is a breakdown product of oil, produced at high
temperatures, which forms a blue haze above the oil and
is a source of atmospheric pollution.