35: 1。 According to the data of Camellia oleifera shell, the ratio of carbon to nitrogen in Camellia oleifera shell is 35: 1. The C/N ratio of Camellia oleifera shell is 35: 1 Ph 6.5, and the water content is 57%. Camellia oleifera shell generally refers to the shell of Camellia oleifera fruit, which contains tea saponin, tea seed protein, tea seed polysaccharide and other nutrients. In addition, it was found that it contained superoxide dismutase (SOD).