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真空冷冻干燥绿叶菜的护绿方法研究
Study on the method of green-preservation of vaccum freezing-drying green vegetable
【摘要】 研究了不同护绿液及不同处理方法( 烫漂、常温浸泡、真空渗透) 对真空冷冻干燥空心菜的护绿效果.结果表明,用ρ( Cu2+ ) ,150 mg· L- 1 + ρ( Na2 S O3) ,200 mg· L- 1或ρ( Zn2 +) ,200 mg· L- 1 + ρ( Na2 S O3) ,200 mg· L-1 作抽空母液,抽至真空度009 Mpa ,浸泡20 min ,对真空冷冻干燥绿叶菜的护绿效果最好.
【Abstract】 This paper deals with the strdy on the gveen preserving effect of vaccum freezing-drying green vegetable treated with different green-preserring liquid by various treating method (Scalding Soaking at the normal tempreture and vaccum penetration). The result shows that the best mithod is:the green-preserving liquied for ρ(Cu 2+ ),150 mg·L -1 +ρ(Na 2SO 3),200 mg·L -1 or ρ(Zn 2+ ),200 mg·L -1 +ρ(Na 2SO 3),200 mg·L -1 , the vacuum at 0.09 M pa for 20 minutes.
【基金】 河南省科委攻关项目
- 【文献出处】 河南农业大学学报 ,JOURNAL OF HENAN AGRICULTURAL UNIVERSITY , 编辑部邮箱 ,1999年03期
- 【分类号】S636.09
- 【被引频次】6
- 【下载频次】178