Study on the feasibility of a natural food colorant from strobilanthe cusia ( nees ) kuntze leaf .
利用马蓝叶部开发天然食用色素可行性之探讨。
Ability to assist our customers in the proper use of colorant and resolve quality problems .
能帮助顾客恰当使用色粉,并且及时解决质量问题。
The hemoglobin colorant was prepared from fresh pig blood , through separating blood serum , acting with antiseptic agents , color producing reagents and antioxidants , without any nitric or nitrous matters .