Figure 1

Concentration and size distribution of Luhua soybean sauce (A,a), vinegar (B,b), Haitian soy sauce (C,c), Zilin mature vinegar (D,d), Qiaoxifu sauce (E,e), vinegar (F,f), and melanoidin (G,g), respectively.

Concentration and size distribution of Luhua soybean sauce (A,a), vinegar (B,b), Haitian soy sauce (C,c), Zilin mature vinegar (D,d), Qiaoxifu sauce (E,e), vinegar (F,f), and melanoidin (G,g), respectively.