Results and discussion
Physical parameters, such as moisture content, °Brix, water
activity and pH, are often measured in confectionary factories
to control the degree of hydration and the rheological properties
of products at different manufacturing stages. The effect
(P≤0.05) of drying time on moisture content, total soluble
solids, water activity and pH, of gummy jellies is shown in
Figure 2. The average moisture content decreased from 21.7 at
12 h to 21.0 at 20 h and then stabilized. In contrast, the average
total soluble solids content increased from 76.9 °Brix at 12 h to
77.7 °Brix at 20 h and then also stabilized. Similarly, the average
values of water activity remained constant at 0.72 from 12 to
16 h and then slightly fell to 0.71 from 20 h onwards. The
evolution of moisture, soluble solids and water activity values
confirmed that no relevant further dehydration occurred after
20 h of drying. However, average pH remained constant at
3.07 from 12 to 16 h and then increased to 3.10 and 3.12 at 20
and 24 h of drying, respectively.
Results and discussionPhysical parameters, such as moisture content, °Brix, wateractivity and pH, are often measured in confectionary factoriesto control the degree of hydration and the rheological propertiesof products at different manufacturing stages. The effect(P≤0.05) of drying time on moisture content, total solublesolids, water activity and pH, of gummy jellies is shown inFigure 2. The average moisture content decreased from 21.7 at12 h to 21.0 at 20 h and then stabilized. In contrast, the averagetotal soluble solids content increased from 76.9 °Brix at 12 h to77.7 °Brix at 20 h and then also stabilized. Similarly, the averagevalues of water activity remained constant at 0.72 from 12 to16 h and then slightly fell to 0.71 from 20 h onwards. Theevolution of moisture, soluble solids and water activity valuesconfirmed that no relevant further dehydration occurred after20 h of drying. However, average pH remained constant at3.07 from 12 to 16 h and then increased to 3.10 and 3.12 at 20and 24 h of drying, respectively.
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