Using rutin as the standard sample, total flavonoid content in purple sweet potato for food packaging paper dying was determined by Vis-and UV-spectrophotometry.
以芦丁为标准样品，比较了可见光及紫外光分光光度法测定食品包装纸用色素紫甘薯总黄酮的方法。
We participated in constituting the national standard of check and accept for food packaging machine in 2003.
2003年参加国家技术监督局液体食品包装设备验收规范国家标准制定。
We participated in constituting the national standard of check and accept for food packaging machine in 2003.
2003年参加国家技术监督局液体食品包装设备验收规范国家标准制定。
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