勿需冷藏的疫苗能有助于多保护数百万生活在贫穷国家的孩子免遭重大疾病的困扰。这种“稳液”技术也能用来生产为预防大面积传染病发生而储备的疫苗。这一技术的关键在于将疫苗活性成分包裹于糖衣之中,从而能在高达60摄氏度的温度下保护这些活性成分。这种糖衣由纯天然的糖类物质比如棉子糖与某种氨基酸比如有代表性的谷酰胺组成。它们形成了一 Vaccinations that do not need to be refrigerated can help protect millions of children living in poor countries from major diseases. This “liquid” technology can also be used to produce vaccines that are stockpiled to prevent the spread of large-scale infections. The key to this technology lies in encapsulating the active ingredients of the vaccine in the sugar coating to protect these active ingredients up to 60 degrees Celsius. This sugar coating consists of purely natural sugars such as raffinose and some amino acids such as the representative glutamine. They formed one