nitrogen-free extract

例句：

1. 1. Thisplant extract is rich in vitamins and minerals, making it a popular choice for skin care.
   这种植物提取物富含维生素和矿物质，因此是护肤的热门选择。
2. 2.The company uses this nitrogen-free extract to improve the quality of its products.
   该公司使用这种无氮提取物来提高其产品的质量。
3. 3.The researcher found that this nitrogen-free extract could help reduce inflammation in the body.
   研究者发现这种无氮提取物可以帮助减少体内的炎症。