US Patent Issued to Jiangsu Dehe BBiological Technology on Jan. 27 for "Preparation of black tea extract with high theaflavin content and use thereof" (Chinese, American Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,386, issued on Jan. 27, was assigned to Jiangsu Dehe BBiological Technology Co. Ltd. (Jiangyin, China).

"Preparation of black tea extract with high theaflavin content and use thereof" was invented by Shiming Li (Glastonbury, Conn.), Dehe Liu (Jiangyin, China) and Jianhong Liu (Jiangyin, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method of preparing black tea extract with high theaflavin content, which utilizes an enzyme solution prepared by extracting polyphenol oxidase and laccase from bergamot yam (Dioscorea opposita foshou) or Chinese yam (Dioscoreae Rhizoma). Also disclosed is a method of treating liver fibrosis or kidne...