Hence, a brief overview of issues about starch cannot be out of place. Starch is a very important polymer composed mainly of branched-chain, larger molecular-weight amylopectin and straight-chain, smaller molecular-weight amylose. The two forms are homoglucans. They are composed of only -D-glucose moieties linked by an -1, 4 glycosidic bond in all kinds of glucan, while the amylopectin has an -1, 6-glycosidic bond at the branch points. Starch composed of -glycosidic bonds is subject to the endoglycolytic activity of - -glucan glucanohydrolases such as -amylase. It is obvious that the short-term supply of energy and ultimately the long-term molecular energy needs of humans are met by the various sources of natural starch. Beyond the need for food, starch has applications in the pharmaceutical industry for the production of encapsulating agents, laundry, and biofuel production, in addition to its applications in electronics, drug delivery, antimicrobials, and structural materials . Whatever the interest in starch, the most important factor that can satisfy such an interest is the degree of polymerization of starch; this is a major determinant of the molar mass of starch.