現(xian)在市(shi)場基本(ben)有兩種(zhong)(zhong)包(bao)(bao)裝形式,一種(zhong)(zhong)為普(pu)通的(de)包(bao)(bao)裝,利用(yong)(yong)聚丙稀塑(su)料(liao)編(bian)織袋對大(da)米(mi)(mi)進行(xing)包(bao)(bao)裝,包(bao)(bao)裝過程中不施加任何的(de)保鮮技術,這(zhe)種(zhong)(zhong)包(bao)(bao)裝對于(yu)大(da)米(mi)(mi)的(de)防蟲及防霉等方面的(de)效果差。還有一種(zhong)(zhong)是用(yong)(yong)真(zhen)空(kong)(kong)包(bao)(bao)裝技術對包(bao)(bao)裝袋進行(xing)抽真(zhen)空(kong)(kong),真(zhen)空(kong)(kong)鈄技術對大(da)米(mi)(mi)的(de)儲存(cun)有較好(hao)的(de)保鮮作用(yong)(yong),但(dan)用(yong)(yong)于(yu)大(da)米(mi)(mi)自身的(de)形狀及真(zhen)空(kong)(kong)度的(de)選擇并不合適,目前大(da)米(mi)(mi)真(zhen)空(kong)(kong)包(bao)(bao)裝選用(yong)(yong)的(de)真(zhen)空(kong)(kong)度一般在-0.07~-0.09kPa之(zhi)間(jian),只要真(zhen)空(kong)(kong)度在范圍內(nei),所出廠的(de)就是合格產品(pin)。
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