Study on the Content and in Vitro Activity of Active Components in Different Grain Color Quinoa
In this paper,white,red and black quinoa in Qinghai Haixi Mongolian and Tibetan Autonomous Prefecture were selected to determine the content of total flavonoids and anthocyanins,and their antioxidant activity and antibacterial activity were investigated.The results showed that the contents of total flavonoids and anthocyanins in quinoa with different grain colors were significantly different.The contents of total flavonoids and anthocyanins in black quinoa were significantly higher than those in red quinoa and white quinoa,reaching 2.811 mg·g-1 and 57.88 μg·g-1,respectively.There was a significant positive correlation between anthocyanin content and total flavonoid content.The inhibitory effect of total flavonoids from quinoa seeds on bacteria was in the order of Escherichia coli＞Bacillus subtilis＞Staphylococcus aureus.The minimum inhibitory concentrations of Escherichia coli,Bacillus subtilis and Staphylococcus aureus were respectively 16 mg·mL-1,32 mg·mL-1 and 256 mg·mL-1.The total flavonoids of three-color quinoa have strong antioxidant and antibacterial activities,and black quinoa is the strongest.
NETL
NSTL
万方数据
维普
