高药用价值多倍体苦荞麦诱导及特性研究

利用秋水仙素溶液配以二甲亚砜对苦荞麦幼苗茎尖进行处理.比较了不同处理时间、浓度和处理方法对植株处理效果的影响.对处理植株与对照植株进行宏观和微观方面的比较,以确定通过此方法获得苦荞麦多倍体的最佳的处理组合.所获得的同源多倍体苦荞具有发达的根系、较大的籽粒和高大的植株等物点,另外其生物黄酮、蛋白质等营养及药用成分含量也有明显提高.     

Antioxidant effects of green tea polyphenols

The unprecedented interest in the antioxidant activity of green tea polyphenols (GTP) is due to the apparent health benefits of tea drinking and the experimental results with the polyphenols,The results suggest that the galloylated catechins show stronger antioxidant effect than that of nongalloylated catechins and the double bond in C ring also plays an important role in this effect,There are synergin effects between different catechins and the antioxidant effect of ( )-epimers is stronger than that of (-)-epimers,The active site to scavenge free radicals mainly locates in p-hydroxyl of phenol in gallic acid and hydroxyl of phenolo in the pyrane also show activity .The large π bond in chromane and benzene ring of catechin is the structure base for their antioxidant effects.The prevent effect of GTP against diseases and their redox regulation in cell signal patheway are very important to be studied in the future.