In order to explore the geographical indication product Gangu pepper production area and quality advantages, the soil, moisture, and pepper products of 4 townships in Gangu county were used for the evaluation.The national standards and GC-MS method were used to determine the environment, product safety, product quality, and flavor substances.The results showed that the production environment and product safety of Gangu pepper could meet the standards of green food.In terms of product quality, Gangu pepper contained a large amount of soluble sugar, vitamin C, total capsaicin, trans-capsaicin, carotene, crude fat, Se, Fe, and Ca nutrients.There were certain differences in the quality of pepper products in different towns. Among them, the content of vitamin C, trans-capsanthin, iron, non-volatile ether extract, and carotene in the pepper products of Lixin Town were the highest, which reached 772.7 mg/kg and 19.53 g/kg ,70.4 mg/kg, 8.33%, 364.0 mg/kg respectively.In addition, Gangu pepper contained 45 flavors which with strong beeswax and spicy fruit aromas. This research scientifically analyzed and evaluated the good ecological environment and product quality of Gangu pepper.These scientific data proved that Gangu pepper has the characteristics of good environment, good taste and high nutrition.
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