脱乙酰壳多糖是存在于蟹壳中的一种天然化合物。一般人认为蟹壳是一种废料,但美国却把这种废料搬上了市场作为商品进行买卖。从蟹壳中提取的脱乙酰壳多糖可以提高小麦的产量,这是美国华盛顿大学最近的一项重大科技成果,它是在植物病理学家李·亨德威格博士的实验室里研究发现的。美国环境保护机构已将这种物质列入“增产剂”的名录。 Chitosan is a natural compound found in crab shells. Most people think crab shell is a waste, but the United States put this waste on the market for sale as a commodity. Chitosan, extracted from crab shells, can increase wheat yield, a major scientific and technological achievement at the University of Washington in the United States. It was discovered in the laboratory of the plant pathologist Dr. Lee Hendweig . The U.S. Environmental Protection Agency has placed this substance on the list of “stimulants.”