Fig. 2From: Improved Mäule color reaction provides more detailed information on syringyl lignin distribution in hardwoodThe visible light absorbance of colored reagents after the traditional Mäule treatment (red line aqueous ammonia) and the new Mäule treatment (black line Tris–HCl buffer); 520 nm is the maximum adsorption of lignin after Mäule treatmentBack to article page