MSG contains many elements. According to the data of Douding. Com, monosodium glutamate itself is white when it is made. Made of wheat, soybean and other raw materials containing more protein by hydrolysis, it is white. Delicious fresh monosodium glutamate contains glutamic acid, which is made from starch such as corn by sugar, fermentation and extraction. Glutamate is a semi-finished product of monosodium glutamate, and glutamic acid is yellow.