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Description: Moisture sorp tion isotherms ofboth ambient-air dried (25?C) and heated-air dried (50?C) canola Brassica napus L. 'Westar' were measured up to the fifth adsorption-desorption cycle at the equilibration temperatures of 3.5, 25, and 40?C. Successive adsorption-desorption cycles and a raised drying temperature affected the hygroscopic equilibrium of canola in such a way that the isotherms were shifted downward, especially at relative humidities below 60%. Compared with those on higher-numbered cycles, the isotherms of ambient-air dried canola appeared irregular on the first and second adsorption-desorption cycles at relative humidities around 30%. The EMC data of canola exposed to successive adsorption-desorption cycles were fitted to the Halsey equation. The Halsey equation was statistically shown to describe marginally well the successively cyclic isotherms of canola. Constant Bin the Halsey equation was found to vary little, while constantCchanged considerably with increased numbers ofadsorp tion-desorption cycles.
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Citation: W.H.YangandS. Cenkowski 1993. EFFECT OFSUCCESSIVE ADSORPTION-DESORPTION CYCLES ANDDRYING TEMPERATURE ON HYGROSCOPIC EQUILIBRIUM OF CANOLA. Canadian Agricultural Engineering 35(2):119-126.
Volume: 35
Issue: 2
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Date: 1993
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Type: Text.Article
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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