木质素是植物提取物，经过浓缩改性反应并喷雾干燥而成。为浅黄色（棕色）自由流动性粉末，易溶于水，化学性质稳定，长期密封储存不分解。是世界上第二位最丰富的有机物（纤维素是第一位）。经化学分析法测定，油茶壳中含有大量的木质素、纤维素、半纤维素等化学成分，其中木质素占31.35%。木质素是一种良好的化业原料，被广泛应用于各个行业。
Lignin is a plant extract that is concentrated and modified by spray drying. It is a light yellow (brown) free flowing powder, easy to dissolve in water, stable chemical properties, long-term sealed storage does not decompose. It is the second most abundant organic matter in the world (cellulose is the first). The results of chemical analysis showed that there were a lot of lignin, cellulose and hemicellulose in Camellia oleifera shell, of which 31.35% was lignin. Lignin is a good chemical raw material, which is widely used in various industries.