Objective To evaluate the effect of oral administration of Kombucha tea (K-tea) on lead induced oxidative stress. Methods Sprague Dawley rats were administered 1 mL of 3.8% lead acetate solution daily alone or in comb...Objective To evaluate the effect of oral administration of Kombucha tea (K-tea) on lead induced oxidative stress. Methods Sprague Dawley rats were administered 1 mL of 3.8% lead acetate solution daily alone or in combination with K-tea orally for 45 d, and the antioxidant status and lipid peroxidation were evaluated. Results Oral administration of lead acetate to rats enhanced lipid peroxidation and release of creatine phosphokinase and decreased levels of reduced glutathione (GSH) and antioxidant enzymes (superoxide dismutase, SOD and glutathione peroxidase, GPx). Lead treatment did not alter humoral immunity, but inhibited DTH response when compared to the control. Lead administration also increased DNA fragmentation in liver. Oral administration of Kombucha tea to rats exposed to lead decreased lipid peroxidation and DNA damage with a concomitant increase in the reduced glutathione level and GPx activity. Kombucha tea supplementation relieved the lead induced immunosuppression to appreciable levels. Conclusion The results suggest that K-tea has potent antioxidant and immunomodulating properties.展开更多
采用红茶菌发酵结合乙醇提取的方式精制茶籽饼粕中的茶皂素。设计正交实验,考察培养方式、发酵时间、种子液量和发酵液浓度等四个因素对茶皂素沉淀量的影响。结果表明,影响茶皂素沉淀量的顺序为发酵液浓度>发酵时间>种子液量>...采用红茶菌发酵结合乙醇提取的方式精制茶籽饼粕中的茶皂素。设计正交实验,考察培养方式、发酵时间、种子液量和发酵液浓度等四个因素对茶皂素沉淀量的影响。结果表明,影响茶皂素沉淀量的顺序为发酵液浓度>发酵时间>种子液量>培养方式。在本研究中,A1(摇床培养)、B2(发酵48h)、C3(种子液量30 m L)和D3(发酵液浓度12%)的条件下可以获得最多的茶皂素絮凝沉淀。精制后的茶皂素与茶皂素粗品经定性和品质比较后发现,红茶菌发酵不会改变茶皂素的性质。结合正交获得的最佳发酵条件和80%乙醇提取,可获得纯度为85%左右的茶皂素。展开更多
文摘Objective To evaluate the effect of oral administration of Kombucha tea (K-tea) on lead induced oxidative stress. Methods Sprague Dawley rats were administered 1 mL of 3.8% lead acetate solution daily alone or in combination with K-tea orally for 45 d, and the antioxidant status and lipid peroxidation were evaluated. Results Oral administration of lead acetate to rats enhanced lipid peroxidation and release of creatine phosphokinase and decreased levels of reduced glutathione (GSH) and antioxidant enzymes (superoxide dismutase, SOD and glutathione peroxidase, GPx). Lead treatment did not alter humoral immunity, but inhibited DTH response when compared to the control. Lead administration also increased DNA fragmentation in liver. Oral administration of Kombucha tea to rats exposed to lead decreased lipid peroxidation and DNA damage with a concomitant increase in the reduced glutathione level and GPx activity. Kombucha tea supplementation relieved the lead induced immunosuppression to appreciable levels. Conclusion The results suggest that K-tea has potent antioxidant and immunomodulating properties.
文摘采用红茶菌发酵结合乙醇提取的方式精制茶籽饼粕中的茶皂素。设计正交实验,考察培养方式、发酵时间、种子液量和发酵液浓度等四个因素对茶皂素沉淀量的影响。结果表明,影响茶皂素沉淀量的顺序为发酵液浓度>发酵时间>种子液量>培养方式。在本研究中,A1(摇床培养)、B2(发酵48h)、C3(种子液量30 m L)和D3(发酵液浓度12%)的条件下可以获得最多的茶皂素絮凝沉淀。精制后的茶皂素与茶皂素粗品经定性和品质比较后发现,红茶菌发酵不会改变茶皂素的性质。结合正交获得的最佳发酵条件和80%乙醇提取,可获得纯度为85%左右的茶皂素。