大米是中国人的主粮之一,按稻种分,有籼米、粳米、糯米、香米、紫米、黑米等品种。随着市场的活跃,各种米在市场上已不鲜见,但以次充好的现象时有发生,购买大米时,可从以下4方面检验其质量:1、检验硬度。大米的硬度主要是由蛋白质含量决定的,硬度越强,蛋白质含量越高,透明度越高。反之,蛋白质含量较低的米含水量高,或是用不成熟的稻制的米,透明度差,米的腹部不透明,白斑 Rice is one of the staple foods of the Chinese people. According to rice seeds, there are varieties of rice, glutinous rice, glutinous rice, fragrant rice, purple rice and black rice. With the active market, various kinds of rice are not uncommon in the market, but the phenomena of inferior packaging often occur. When buying rice, the quality can be tested from the following four aspects: 1. Testing hardness. The hardness of rice is mainly determined by the protein content. The stronger the hardness, the higher the protein content and the higher the transparency. Conversely, rice with a low protein content has a high moisture content, or rice with immature rice, has poor transparency, and its belly is opaque with white spots.