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60Co γ輻照對(duì)胡蘿卜干燥特性的影響
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Effect of 60Co γ-irradiation Pre-treatment on Drying Characters of Carrot
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    摘要:

    采用60Co γ射線對(duì)胡蘿卜進(jìn)行輻照預(yù)處理，研究了輻照劑量、干燥溫度、切片厚度三因素對(duì)干燥和溫度特性的影響。結(jié)果表明：干燥速率和表面溫度隨著輻照劑量的升高而升高。對(duì)胡蘿卜顯微結(jié)構(gòu)以及水分活度進(jìn)行研究，發(fā)現(xiàn)經(jīng)γ射線輻照處理后的胡蘿卜細(xì)胞壁變薄出現(xiàn)斷裂，液泡破裂，水分活度也隨輻照劑量的增大而升高。這些變化是導(dǎo)致失水速率加快和溫度特性變化的主要原因。另外，熱風(fēng)溫度和切片厚度對(duì)干燥特性也有影響。熱風(fēng)溫度越高，切片越薄，輻照后胡蘿卜失水速率越快。

    Abstract:

    The influence of different dosages of irradiation, temperatures of hot air, thicknesses of the slice carrot on the characters of dehydration and surface temperature for the irradiated carrot were studied. The results showed that three factors affected the characters of dehydration: irradiation dosage, temperature of hot air, and thickness of the slice carrot. With the increase of the dosage, both the rate of dehydration and the surface temperature for carrot increased. Then, the microstructure and water activity were also studied. The results showed that the membrane of the cell wall and vacuole of the irradiated samples were broken. The great dosage brought on the high water activity. These changes were the main cause for the characters of dehydration and surface temperature irradiated carrot. 

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廖文艷,王俊,于勇,傅俊杰.60Co γ輻照對(duì)胡蘿卜干燥特性的影響[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(6):123-127.Effect of 60Co γ-irradiation Pre-treatment on Drying Characters of Carrot[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(6):123-127.

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