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A carbohydrate that occurs as discrete, partially crystalline granules in the seeds, roots (tubers), stems (pith), leaves, fruits, and pollen grains...
Starch (in 'Sugar' article)
Starches can be hydrolyzed either by dilute acid or by enzymes. The product of acid hydrolysis varies with time and conditions but contains glucose,



= Encyclopedia Article; = Research Update
Figure 1.Cornstarch as seen by (a) scanning electron microscope, (b) light microscope, and (c) polarized light. (From R. L. Whistler, E. F. Paschall, and J. N. BeMiller, eds., Starch: Chemistry and Technology, 2d ed., Academic, 1984)
From Encyclopedia article 'Starch'
Figure 2.Structures involved in starch. (a) Linear chain of alpha-1,4-glucan. (b) Alpha-1,6 branch point. (After Y. Pomerzanz, ed., Wheat: Chemistry and Technology, 2d ed., American Association of Cereal Chemists, 1971)
From Encyclopedia article 'Starch'