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| Effects of different drying methods on Phyllanthusemblica pomace and modeling of relationshipbetween moisture and water activity |
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| Abstract: |
| Phyllanthus emblica pomace，which was rich in fiber，was beneficial raw material for the production
of dietary fiber. Fresh P. emblica pomace with high moisture content was suitable for the bacteria breeding and would
be corrupted. In order to decrease resources waste，the appropriate drying method was selected to reduce water content
of P. emblica pomace. Under safety moisture content，the pomace storage time would be delayed to apply to dietary
fiber processing. Model establishment exhibited the relationship between moisture content and water activity. The model
could determine the maximum moisture content at safety water activity. The results showed that the relationship between
moisture and water activity was Y=Exp（0.920-12.312/x+8.194/x2-0.03x）. The safety water activity was 0.6 and its
correspondence moisture was 10.25%. Under 10.25%，microbe was hard to parasitism. Fluidized bed drying method had
the shortest time with 5 min. The sample，which was porosity，showed the smallest hardness（21 N），followed by 105℃
vacuum drying sample. Polymerization was significantly affected by the method of 50℃ hot-air drying |
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