干燥方式对半干面保鲜和品质影响的研究

Effects of Different Drying Methods on the Preservation and Quality Characteristic of Semi-Dried Noodle

DOI：10.3969/j.issn.1673-1689.2013.01.008

中文关键词: 半干面 电热干燥 紫外-微波干燥 含菌量 质构 蒸煮品质

英文关键词: semi-dried noodle electric drying ultraviolet-microwave drying number of bacteria texture cooking quality

基金项目:国家“十二五”科技支撑计划项目(2012BAD37B04)

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中文摘要:

半干面是一种新型的方便面制食品,具有较好的开发前景。干燥是半干面生产工艺中最重要的环节之一,对其品质和保鲜影响较大。作者采用紫外-微波干燥和电热干燥对鲜湿面条进行干燥,对比分析干燥方式对半干面的含菌量和品质的影响。实验结果表明,电热干燥效率较低,干燥的后期杀菌效果不明显;紫外-微波干燥效率高,干燥后期面条的含菌量持续下降,两种干燥均能使半干面的初始含菌量明显降低。对于电热干燥,125℃为较合适的干燥温度,半干面的菌落总数显著下降,对其质构和蒸煮品质影响较小;对于紫外-微波干燥,在不同功率下半干面的初始含菌量均显著低于电热干燥,当微波功率为2 000 W时,半干面的品质较好,是较为合适的微波干燥功率。

英文摘要:

Semi-dried noodle is a new type of instant food,and has a good development prospect.Drying is one of the most important processes in the production of semi-dried noodle,and has a great impact on its quality and preservation.In this work,ultraviolet-microwave drying and electric drying were used to dry the fresh noodle and to comparatively investigate their effects on the preservation and quality of semi-dried noodle.The experimental results show that the efficiency of electric drying is lower than that of ultraviolet-microwave drying,in the later stage of drying,the sterilizing effect of electric drying is not obvious while the number of bacteria of noodle dried by ultraviolet-microwave drying continue to decline.Both of the drying means can make the initial number of bacteria of semi-dried noodle reduce obviously.For electric drying,125 ℃ is the suitable drying temperature.At this temperature,the number of bacteria decreased significantly,but the texture and cooking quality of semi-dried noodle is not notably deteriorated.For noodle dried by ultraviolet-microwave,its number of bacteria is distinctly lower than that of electric drying.When microwave power is set at 2 000 W,semi-dried noodle can keep relatively high quality,hence 2 000 W is the suitable drying power.

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