每日英语词汇

starch or amylum is a polymeric carbohydrate consisting of numerousglucose units joined by glycosidic bonds called polymers. thispolysaccharide is produced by most green plants as energy storage. it isthe most common carbohydrate in human diets and is contained in largeamounts in staple foods like potatoes, maize (corn), rice, wheat andcassava (manioc).
pure starch is a white, tasteless and odorless powder that is insoluble incold water or alcohol. it consists of two types of molecules: the linear andhelical amylose and the branched amylopectin. depending on the plant,starch generally contains 20 to 25% amylose and 75 to 80% amylopectinby weight.[4] glycogen, the glucose store of animals, is a more highlybranched version of amylopectin.
in industry, starch is converted into sugars, for example by malting, andfermented to produce ethanol in the manufacture of beer, whisky

andbiofuel. it is processed to produce many of the sugars used in processedfoods. mixing most starches in warm water produces a paste, such aswheatpaste, which can be used as a thickening, stiffening or gluing agent.the biggest industrial non-food use of starch is as an adhesive in thepapermaking process. starch can be applied to parts of some garmentsbefore ironing, to stiffen them.
淀粉或淀粉是一种聚合碳水化合物，由称为聚合物的糖苷键连接的许多葡萄糖单元组成。 大多数绿色植物产生这种多糖作为能量储存。 它是人类饮食中最常见的碳水化合物，在马铃薯、玉米（玉米）、大米、小麦和木薯（木薯）等主食中大量含有。

纯淀粉是一种白色、无味、无臭的粉末，不溶于冷水或酒精。 它由两种类型的分子组成：线性和螺旋直链淀粉以及支链支链淀粉。 根据植物的不同，淀粉通常含有 20% 至 25% 的直链淀粉和 75% 至 80% 的支链淀粉（按重量计）。 [4] 糖原，动物的葡萄糖储存库，是支链淀粉的高度分支版本。