紫糯‘滇香紫1号’稻米香气成分和矢车菊色素含量分析

Analysis of Grain Fragrant Components and Cyanidin Content of Purple Glutinous Variety ’Dianxiangzi1’ in Rice

云南墨江紫米产业对当地经济发展具有重要意义。墨江紫米长期生产主要依靠地方品种‘癸能紫米’,其植株偏高、易倒伏。结合当地紫米发展需求,育成了综合性状优良的优质紫糯米新品种‘滇香紫1号’,但其稻米矢车菊色素含量和香气物质成分尚不清楚。本研究分析了‘滇香紫1号’稻米的矢车菊色素含量和香味物质成分,结果表明其矢车菊素含量为65.24μg/g,携带香味基因badh2,鉴定出挥发性物质成分46种,其中戊醛、己醛、庚醛、辛醛、壬醛、十一醛、1-辛烯-3-醇和2-戊基-呋喃8种稻米香味物质含量达62.07%,但没有鉴定出特征化合物2-乙酰基-1-吡咯啉。该品种稻米花青素和香味物质含量丰富,全生育期全株表现紫色,适宜作为紫米生产和稻田观赏的品种推广应用。

It is of great significance for purple rice industry to develop local economy at Mojiang county,Yunan Province.For a long time,the production of the Mojiang purple rice has mainly relied on a local landrace’Guinengzimi’,which is high and seriously lodging.To meet the development demand of the local purple rice,a superior purple glutinous variety ’Dianxiangzi1’ was released.Its grain cyaniding content and fragrant components are still unknown.In this research,these compounds were analyzed.The results indicated that about of 65.24 μg/g cyaniding and 46 volatile compositions were detected in the variety.It possessed the gene badh2 which involved in aroma trait,and also detected about of 62.07% eight key aromatic components of pentanal,hexanal,heptanal,octanal,nonanal,undecanal,1-octen-3-ol and 2-pentyl-furan.However,2-acetyl-1-pyrroline of the aromatic compound was not identified.In general,there are rich for anthocyanins and aromatic compounds in the variety,and which is purple for the whole plant during the growth period,and suitable for the application for purple rice production and ornamental variety.