ALEXANDRIA, Va., June 18 -- United States Patent no. 12,324,448, issued on June 10, was assigned to China Agricultural University (Beijing).
"Tofu with long shelf life and preparation method thereof" was invented by Shuntang Guo (Beijing), Xinran Liu (Beijing), Yue Li (Beijing) and Jingting Xu (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "This invention provides a tofu with long shelf life and preparation method thereof, comprising soaking soybean to make soy milk, filtering to remove bean dregs, boiling, primary cooling, homogenizing, deaerating, UHT sterilization, secondary cooling, inline mixing soy milk with sterilized composite coagulant, aseptic filling, microwave heating, solidification, coo...