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-  2015 

冷冻预处理及负压微波喷动干燥对脱水牛蒡品质的影响

DOI: 10.3969/j.issn.1673-1689.2015.12.005

Keywords: 牛蒡 负压微波喷动 预处理 冷冻
burdock
,pulse-spouted microwave vacuum,pretreat,frozen

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Abstract:

以牛蒡为主要原料,在干燥腔内真空压力波动范围为12~21 kPa的条件下,研究喷动频率、微波功率,以及预处理方式,对负压微波喷动干燥(PSMVD)牛蒡片的干燥特性及质构、收缩率、复水比、感官评分、色泽等品质的影响。结果表明:喷动频率、微波功率,以及预处理方式对其影响较大,当喷动频率为3.3 r/min,微波功率为19.8 W/g,采用冷冻预处理(-18 ℃,12 h)的方式,所得到的牛蒡产品色泽佳、质地松脆、风味浓郁、保质期长。
This paper investigated the effects of pulse frequency,microwave power and pre-treatment on the texture,shrinkage percentage,re-hydration rate,sensory score and total color difference of burdock slices dried by pulse-spouted microwave vacuum drying(PSMVD) at the pressure range of 12~21.0 KPa. Results showed that with the pulse frequency 3.3 times/min,microwave power 19.8 w/g and frozen pretreatment at -18 ℃ for 12 h,burdock slices possessed good color,crispiness,rich flavor and long shelf life

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