1·To study the optimal process of the extraction of tannic acid from Chinese gallnut.
从五倍子中提取单宁酸，通过正交实验优化筛选出最佳工艺。
2·The material of brewing tannin is natural gallnut, it can be directly used in food and medicine by physical purifying and it has brought into the catalogue of Chinese food additives(No. 2201).
酿造单宁是以天然五倍子为原料，用物理方法提纯可直接用于食物和入药，已纳入我国食品添加剂目录（ 编号为2201） 。
3·The experiments showed that the gallnut extract had the significant dose-dependent inhibitory effect on the activity of collagenase.
实验显示五倍子水提取物能显著抑制胶原酶的活性，其作用呈浓度依赖性。
4·The effects of gallnut water extract on the activities of ALP inhibited by LPS;
目的研究金黄色葡萄球菌生物膜对五倍子提取物的抵抗力。
5·The L16(44)orthogonal design experiments were used to research gallnut antibacterial substances on extraction process.
采用L16（44）正交设计实验，对五倍子抑菌物质的提取工艺进行研究。