大豆的质量 ,决定于其工艺特性和物理化学状态。大豆的物理状态 ,按其气味、水分、杂质含量、损伤粒、未成熟粒、破碎粒及色泽混杂等指标来评价。对大豆的质量要求 ,决定于大豆生产国的国家标准 ,各个国家对这些要求很不一样。大豆在国际市场上的贸易标准也因进出口国家和地区 The quality of soy depends on its process characteristics and physico-chemical status. Soybean physical state, according to their smell, moisture, impurity content, damage grains, immature grains, broken grains and color mixed with other indicators to evaluate. The quality requirements for soybeans depend on the national standards of the soybean producing countries, which vary greatly from country to country. Soybean trade standards in the international market because of import and export countries and regions