熱泵變溫干燥對竹莢魚干燥特性及色澤的影響

doi:10.3969/j.issn.1000-1298.[year].[issue].[sequence]

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熱泵變溫干燥對竹莢魚干燥特性及色澤的影響
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                        10.3969/j.issn.1000-1298.[year].4.[sequence]
                    
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摘要:

采用恒溫、升溫和降溫3種溫度模式對熱泵干燥竹莢魚的干燥特性及色澤變化進行了研究,。結(jié)果表明：采用適宜的初始溫度和循環(huán)時間,，熱泵變溫干燥能夠縮短干燥時間，顯著提高半干竹莢魚片的色澤,。竹莢魚最適合熱泵變溫干燥的條件為

Abstract:

20℃(3.5 h)→25℃(3.5 h)→30℃(3.5 h)→35℃(3.5 h),。Horse mackerels were dried in a heat pump dehumidifier (HPD) which is capable of producing stepwise control of drying air temperature. Two stepwise air temperature profiles were tested. The drying characteristics and total color difference (ΔE) of the products dried under these stepwise variation of temperature were measured and compared with constant air temperature drying. It was observed that by employing stepwise change in drying air temperature with the appropriate starting temperature and cycle time, it was possible to reduce drying time to reach the desired moisture content with significantly improved product color. The optimum condition for time-varying temperature drying of horse mackerel was step-up profile with initial temperature of 20℃ and cycle time of 3.5 h. 

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石啟龍,薛長湖,趙亞,王相友,李兆杰.熱泵變溫干燥對竹莢魚干燥特性及色澤的影響[J].農(nóng)業(yè)機械學(xué)報,2008,39(4):83-86.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(4):83-86.

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