The peeling process of fresh ginger during factory production causes not only waste but also pollution to the environment. Now, by fermenting whole pieces of fresh ginger into black ginger, people are able to further enhance the nutritional value of ginger while lowering the burden on the environment. In this experiment, fresh ginger was fermented into black ginger, and superoxide dismutase (SOD) crudely extracted from both fresh ginger and black ginger were gavaged separately in type 2 diabetic rats to compare the SOD activity and effect in rat liver during the treatment of type 2 diabetes. It was found that the SOD activity of extracts from fermented black ginger was much higher than that of extracts from fresh ginger. In addition, the activity of SOD in the liver of rats gavaged with black ginger extract is higher than that in the liver of rats gavaged with fresh ginger extract, which shows that black ginger extract has certain protective effects on the liver.
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