掺假黑米家庭中简易鉴别方法

目的设计一种在家庭中利用简单易得的材料对掺假黑米进行鉴别的方法。方法根据黑米在酸碱性条件下显不同颜色的性质,在黑米经简单提取溶解后加入白醋,黑米显红色;加入小苏打后显蓝色,而此反应可逆。结果应用该种方法可以在家庭中对假黑米进行鉴别。结论此法简单可靠,适合家庭中对真假黑米的鉴别。

Identification of black rice adulteration by an easy method at home

Objective To identify black rice adulteration by a kind of easy method at home. Methods The method was developed based on the structure and physicochemical properties of black rice anthocyanidins. Because of black rice presented different colors under different alkali circumstance, the adulterated black rice could be identified by qualitative analysis of black rice anthocyanidins. The vinegar and NaHCO3 was added to the treated black rice, respectively. Results The color of black rice presented red in vinegar and blue in NaHCO3, and the reaction is reversible. Conclusion The adulterated black rice could be identified by an easy method at home.