富锌嫩麦芽培植最佳锌浓度的筛选

The best zinc concentration to cultivate the zinc-rich tender malt

目的:利用生物转化技术,培植富锌嫩麦芽。方法:采用不同的富锌浓度进行梯度培植,利用火焰原子吸收分光光度法测定嫩麦芽的锌含量,根据嫩麦苗中心的含量和收率,来判断和评价富锌效果。结果:在锌浓度为400mg/L时,嫩麦芽长势最好,收率88%,锌含量144.7mg/kg;锌浓度小于400mg/L收率和锌含量均降低;大于600mg/L时,锌含量升高但是收率降低。结论:根据嫩麦芽的收率和锌含量综合评价,在锌浓度为400mg/L时,可有效的促进嫩麦芽的生长,其收率最高,锌含量较高,总体评价富锌效果最好,利用锌溶液培植富锌嫩麦芽,条件可控简便易行,生产周期短,易于试现规模化生产,是生产富锌嫩麦芽的最佳方法。

Objective：The biological conversion technology was used to cultivate the zinc-rich tender malt.The effect of different zinc concentration gradient on the content and the yield of tender wheat malt were investigated by flame atomic absorption spectrophotometry.The results show that tender malt achieved the best yield（88%） and the proper zinc content（144.7 mg/kg） with 400 mg/L of zinc.The yield and zinc content of tender malt were decreased when zinc concentration was less than 400 mg/L.The increased zinc content and the decreased yield of tender malt were found when exposed to the more than 600 mg/L of zinc.In conclusion,the effect of zinc solution on the cultivation of zinc-rich tender malt is significant and the best zinc con-centration is 400 mg/L.The tender malt shows the enhanced growth,the largest yield and the proper zinc content with 400 mg/L of zinc.This controllable and simple method is convenient to large-scale production,and it is the best way to cultivate the zinc-rich tender malt.