In this study, the effects of different germination time on the main nutrients, polyphenol con-tents, and antioxidant activities of hulless barley were studied using Walan, 14-946, and Kunlun No. 15 hulless barley as materials. The results showed that the contents of total starch, β-glucan, free phenol, bound phenol, total phenol, and free flavonoids decreased in the hulless barley, and the contents of fat, protein, fiber, bound flavonoids, and total flavonoids increased. The germination treatment significantly improved the DPPH radical scavenging capacity of the free extracts and reduced the iron ion reducing ability and the ABTS radical scavenging capacity of the conjugated extracts. The free extracts of germina-ted blue hulless barley ( Walan) had strong antioxidant activities while the conjugated extracts of germina-ted black granules (14-946) had strong antioxidant activities. Correlation analysis showed that the con-tents of main nutrients (fat, total starch, fiber, β-glucan) in hulless barley was significantly correlated with contents and antioxidant activities. Therefore, the main nutrients contents could be used to evaluate phenolic contents and antioxidant activities. The antioxidant capacities were positively correlated with the contents of free and bound polyphenols, which could provide a simple method to select the special type of hulless barley varieties. The results showed that germination could change the nutrient, polyphenols con-tents and antioxidant activities of hulless barley. Therefore, the appropriate color of hulless barley seeds and suitable germination time were important to preserve the bioactive substances of hulless barley and is beneficial to development and utilization of hulless barley resources.

萌发青稞是一种新型的功能性食品,正逐渐成为国内外食品行业的研究热点.通过比较青稞萌发前后营养成分、生理活性的变化,以及萌发青稞产品的研究现状,综述了国内外萌发青稞的研究进展,为我国萌发青稞的开发与利用提供参考.