概述了黑曲霉单宁酶酶法转化五倍子单宁酸生产没食子酸的原理和方法、酶源菌种的分离和选育、工艺技术的特点、产品质量规格及在国内食品、医药行业相关部门的应用等。该酶法生产工艺具有原辅料来源易得、菌种单宁酶活力高、生产性能较稳定、生产成本低廉、工艺操作方便、产品质量优等特点。 The principle and method of enzymatic conversion of gallnut tannin to gallic acid by enzymatic conversion of gallnut tannin were summarized. The isolation and breeding of enzyme source strains, the characteristics of process technology, product quality specifications and the quality control of gallic acid in the domestic food and pharmaceutical industry Application and so on. The enzymatic production process has the advantages of easy access to raw and auxiliary materials, high activity of tannase strains, stable production performance, low production cost, convenient process operation and excellent product quality.