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甘薯是世界上重要的粮食、饲料、工业原料及新型能源用块根作物,在我国乃至世界再生能源开发中起到重大作用,其分布地域广,适应性强,沙荒地、岗坡地均可种植。生物产量高,而且种植栽培容易。甘薯含淀粉15%~30%,晒干率20%~35%,世界各国以薯干或淀粉为原料生产乙醇有着悠久的历史。随着全球能源的日趋紧张,乙醇作为一种可再生的环保燃料将快速步入全球成品油市场,在替代汽油供应方面起到越来越大的作用。各国正在推行或制定燃料乙醇计划,并着眼于生物燃料乙醇应用方案,认为甘薯可能是摆脱将来粮食和能源危机的“最后一张王牌”。
Sweet potato is an important root crop in the world for food, feedstuff, industrial raw materials and new energy. It plays a significant role in the development of renewable energy in China and even in the world. It has a wide geographical distribution and strong adaptability. Bio-yield, and cultivation is easy. Sweet potato starch 15% to 30%, drying rate of 20% to 35%, all countries in the world to dry or starch as raw materials to produce ethanol has a long history. As global energy becomes more and more tense, ethanol, as a renewable and environmentally friendly fuel, will rapidly enter the global refined oil market and play an increasingly greater role in alternative gasoline supply. Countries are pursuing or developing fuel ethanol programs and looking at biofuel ethanol programs, believing that sweet potatoes may be “the last trump card” to emerge from future food and energy crises.