The gelatinization peak properties of controland oil added flour samples are as presented inTable 2. Results showed that addition of oil didnot significantly affect the onset (To), peak (Tp)and end temperatures (Te) of gelatinization peakfor wheat flour. However, oil-added rice flourproduced a significantly (p<0.05) lower peak (Tp)and end temperatures (Te) compared to itscontrol. The end temperature (Te) of sago flouralso decreased significantly (p<0.05) for oil addedsamples from 78.04 to 77.07°C. However,gelatinization enthalpy (ΔH) did not differsignificantly (p>0.05) between control and oiladded samples for all types of flour. As discussedfor defatted rice flour, the observed differences inTp and/or Te values were small and did not resultin any significant change in the gelatinizationenthalpy (ΔH).Thus, these results suggest that addition of oilas performed in this study had a minor influenceon wheat, rice and sago flour gelatinizationproperties as observed using DSC. However, inthe actual frying system, there are many otherfactors involved such as frying temperature andpressure, which may contribute to a varyingamount of oil absorption which may not becovered in this study. In addition, lipids from thefood itself may also increase the fat content in thefried coating.
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