五水硫酸铜溶液对4种压花叶材保绿效果的影响

Effects of CuSO_4·5H_2O Solution on the Color-keeping of 4 Kinds of Embossed Leaf Materials

[目的]研究五水硫酸铜溶液对4种压花叶材保绿效果的影响。[方法]以杜英、小叶蚊母、金森女贞、大叶黄杨4种植物的叶片为试验材料,采用2%、5%、10%和15%浓度的五水硫酸铜(Cu SO4·5H2O)溶液对所有叶材进行80~90℃的热处理,研究了不同浓度的铜盐溶液对压花叶材的保绿效果。[结果]杜英叶片随着铜盐浓度的升高,微波压制后易脆,保色效果不佳。小叶蚊母、金森女贞、大叶黄杨在15%Cu SO4·5H2O溶液浸煮后微波压制可达到理想的保绿效果;铜盐浓度越高,叶片复绿时间越短。4种材料铜盐处理微波压制后保绿效果由强到弱顺序依次为大叶黄杨、金森女贞、小叶蚊母、杜英。[结论]该研究为为压花制作提供技术支持。

[Objective] To research the effects of Cu SO4·5 H2 O solution on the color-keeping of 4 kinds of embossed leaf materials.[Method]Leaves of Elaeocarpus sylvestris,Distylium buxifolium,Ligustrum japonicum' Howardii' and Euonvmus japonlcus were taken as test materials. They were heat treated at 80-90 ℃ by 2%,5%,10% and 15% Cu SO4·5 H2 O to study the effects of color-keeping. [Result] Elaeocarpus sylvestris leaves were easier to brittle after microwave pressing with the increase of the concentration of copper salt,and the color keeping was not good. Distylium buxifolium,Ligustrum japonicum 'Howardii ' and Euonvmus japonlcus leaves could get the ideal green effect by microwave pressing after soaked in 15% Cu SO4·5 H2 O solution. The higher the concentration of copper salt,the shorter the leaf green time. Effects of microwave pressing treatment on green retention of 4 kinds of materials from strong to weak were in the order of Euonvmus japonlcus,Ligustrum japonicum 'Howardii',Distylium buxifolium and Elaeocarpus sylvestris.[Conclusion]This research provides technical support for the making of dried pressed flowers.