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