【摘要】 目的利用茶溶液对黄瓜进行浸泡处理,根据其对硝酸盐、亚硝酸盐的去除率,探讨最佳浸泡方式。方法利用热水浸提法制备茶叶水溶液,在恒温水浴锅中用茶叶水溶液对黄瓜样品进行浸泡处理,通过改变茶叶水溶液的浓度、浸泡时间、浸泡温度等实验条件,测定黄瓜中硝酸盐、亚硝酸盐的含量变化。结果在温度为30℃时,用浓度为5%的茶溶液对黄瓜浸泡10 min,对其硝酸盐和亚硝酸盐的去除效果较好。结论利用茶溶液做浸泡液对黄瓜中的硝酸盐、亚硝酸盐具有一定的清除效果,但清除率与浸泡条件有关。更多还原

【Abstract】 Objective: To discuss the best soaking methods using tea extracting solution according to the change of nitrate and nitrite content in cucumber.Methods: Tea extracting solution was prepared using boiling water extraction.Tea solution and cucumber samples were placed in constant temperature water basin,and then the content of nitrate and nitrite of cucumber were measured in different conditions with regard to the changes of the concentration of tea solution,soaking temperature and soaking time.Results: The best nitrate and nitrite removing rate was obtained when the temperature was 30 ℃,the concentration of tea solution was 5% and the soaked time was 10min.Conclusion: In using tea as soaking solution,there is a certain removal of nitrate and nitrite from cucumber,but the removing rate changes with different conditions.更多还原