Abstract Existence of lactose in ice cream induces lactose
intolerance and α-lactose crystals. These issues can be overcome
by complete or partial elimination of lactose in milk.
Therefore, in this research pasteurized milk was hydrolyzed
(LH=0, 25, 50, 75, and >75 %) and its effects along with
sugar reduction (SR=0, 25, 50 %) were investigated on
some properties of mix and frozen ice cream. The hydrolysis
level was determined by freezing point, chloramine T, and
HPLC. Results showed that with increasing LH, the apparent
viscosity increased, freezing point decreased, while surface
tension and density were constant in mixes. In contrast,
in frozen ice creams the hardness, and resistance to melting
decreased but stickiness increased (p<0.05). Moreover, in
low sugar and low lactose ice creams the hardness and
sweetness decreased but resistance to melting increased. In
general, the ice creams with SR=25 % and LH=75 %
showed the highest similarity to control in terms of physicochemical
as well as sensory properties
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