利用红高粱壳生产天然红色素，其成本只有辣椒生产红色素的1／4，且工艺简单，产品提取率可达6％左右，产品呈颗粒状，粒度小于100目，含量高达95％以上，紫红色，色调柔和、纯正，其理化指标优异，对酸、碱、热、光稳定，为脂溶性，既可直接使用，也能以乳化、粉末的形式使用 The use of red sorghum shell production of natural red pigment, the cost of red pepper production is only 1/4, and the process is simple, the product extraction rate of up to 6%, the product was granular, particle size less than 100 mesh, the content of up to 95% Mauve, soft colors, pure, excellent physical and chemical indicators, acid, alkali, heat, light, soluble, can be used directly, can also be used in the form of emulsification, powder