【摘要】 绿芦笋经不同浓度的Ｎａ２ＣＯ３处理后，在ｐＨ６．５～８．５的条件下，用Ｃｕ２＋、Ｚｎ２＋和Ｃｕ２＋＋Ｚｎ２＋溶液护绿，并检测其护绿效果。结果表明，０．１５０ｍｏｌ／ＬＮａ２ＣＯ３处理后，在ｐＨ８．０的条件下，以５０ｍｇ／ｋｇＣｕ２＋＋１５０ｍｇ／ｋｇ的Ｚｎ２＋溶液护绿处理２４ｈ，其护绿效果为最佳，产品经检测，铜、锌残留量符合国家允许标准。更多还原

【Abstract】 To keep the fresh colour of green asparagus, Cu 2+ , Zn 2+ and Cu 2+ +Zn 2+ were used under the conditions of pH 6 5-8 5 after treated with Na 2CO 3 in various concertrations The results indicated that a typical green keeping method was applying 50 mg/kg Cu 2+ and 150 mg/kg Zn 2+ solution of pH 8 0 to green asparagus for 24 hours after being treated with 0 150 mol/L of Na 2CO 3 The remaining Cu 2+ and Zn 2+ in the finished products accorded with the relevant national standards更多还原