电场催陈米酒核磁共振分析

以自行研制的设备对新产广东玉冰烧米酒进行催陈 (处理条件 :4 0kV·m- 1 的电场强度处理 180min ,5 0Hz) ;然后采用1 HNMR对新酒、电场催陈酒及成品酒进行了分析 ,研究发现新酒中甲基和亚甲基峰出现了 4个杂峰而其他样品没有 ,说明新酒中单分子与各种状态的缔合结构共存 ,其他各主要有机物质亦参与成峰 ;而关于羟基质子峰 ,新酒为平头峰 ,推断出溶液中有 2种羟基质子存在 ,一种参与形成缔合 ,另一种未参与缔合 ;成品酒为单一峰 ,说明溶液中形成了单一稳定的大分子缔合结构 ;电场处理酒样为不规则峰 ,反映出多种缔合状态共存 ,其主要缔合结构接近成品酒缔合结构

1H NMR Analysis of Rice Wine Treated by Electric Field

This paper studied the 1H NMR spectrum change of Guangdong rice wine. Three kinds of rice wine were studied: raw wine, finished product wine and electric-field-treated wine (40 kV x m(-1), 50 Hz, 180 min). Results showed that many weak peaks appeared in raw wine's CH3- and -CH2- peaks in contrast to the other two samples, reflecting that single molecules and various kinds of hydrogen-bonded clusters coexisted in the raw wine, and many kinds of organic compounds also contributed to forming peaks. As to the peaks of hydroxide H, the peak forms of the three samples were level, single sharp and irregular, respectively (raw, finished product and electric-field-treated wine). The level peak of raw wine inferved that there were two kinds of hydroxide H existed, one was involved in forming hydrogen bonds, while the other was not. The single sharp peak of finished product wine showed that single stable large hydrogen-bonded clusters were formed in the wine, and the irregular peak of electric-field-treated wine illustrated that there might exist various kinds of hydrogen-bonded clusters, whose main structure was similar to that of the finished product wine.