【文献标题】Enhanced hydrolysis/acidogenesis and potential mechanism in thermal-alkali-biofilm synergistic pretreatment of high-solid and low-organic-content sludge
【产品原文引用】The protease activities were analyzed by the ELISA kit as per the manufacturer’s instructions (Hengyuan Biotech. Co. ltd., Shanghai, China) (Zheng et al., 2019)