1995 Fiscal Year Final Research Report Summary
Basic Study on the Storage and Processing of Beans
| Project/Area Number |
06660320
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
農業機械学
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| Research Institution | Tokyo University of Agriculture |
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Principal Investigator |
TAGAWA Akio Tokyo University of Agriculture, Faculty of Bioindustry, Associate Professor, 生物産業学部, 助教授 (90216804)
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| Project Period (FY) |
1994 – 1995
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| Keywords | beans / drying / equilibrium moisture content / thin layr / thermophysical property / transient heat probe method / water absorption / volume change |
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| Research Abstract |
In this study, four main themes, which were thin layr drying characteristic, equilibrium moisture content (EMC), thermophysical property and water absorption characteristics for several beans, were investigated for supplying basic data conceming the safe storage and the processing of several beans. In thin later drying characteristics of beans, that of adzuki beans is published in Transctions of the ASAE (39 (2), 1996). Thin layr drying characteristics of some another beans (soy beans, tobo beans, kintoki beans etc.) were also investigated under drying conditions between 25 and 45ﾟC.Equilibrium moisture content of adzuki beans were meaured by a new method. This method was confirmed as a method of the EMC measurement because it was very accurate and demanded only short period for equilibrium. Thermophysical properties of three kinds of beans (adzuki, kintoki, tebo) were determined by transient heat flow method using a probe that approximates a line heat source at five different moisture contents and five temperatures, respectively. The effective thermal conductivity and thermal diffusivity of beans were determined simultaneously. Using these results and bulk density, the specific heat of beans were estimated. Water absorption characteristics and volume change of soy beans were measured. The mathematical model evaluated to fit the obtained data was the exponential model, which was suitable to describe the water absorption characteristics of soy bean. Moreover, volume change during water absorption were determined.
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