铁皮%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF的速冻保鲜方法
速冻保鲜技术常被用下铁皮%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF保鲜,效果较好。此技术需先将铁皮%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF清洗干净,然后将其表面的水分晾干。为方便贮藏,可将其切片或切段,然后放入包装袋里,抽真空后封口,置于-30℃下速冻,随后放人-18℃冰箱内贮藏。速冻保鲜技术是使铁皮%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF中的水分快速结晶,迅速降低铁皮%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF温度的一利加工技术,它能保证铁皮%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF的原有成分和性质不变,而且该法成本较低,保鲜效果较好。
袋装冷冻法是在冷藏保鲜法的基础上发展起来的一种保鲜方法,主要区别在于冷藏温度,有研究采用速冻保鲜结合聚乙烯袋装技术,对铁皮%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF分别进行了保鲜方法的实验和保鲜前后的化学成分测定和药效学比较。结果显示,使用聚乙烯包装袋直接封口,-30℃速冻,-18℃保藏,可以在保持基本成分和药效的基础上,使铁皮%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF保鲜贮存期达6个月至1年。
上一篇:霍山%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF鲜条的保质期是多久?
下一篇:正宗霍山铁皮%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF是什么颜色?
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