【摘要】 利用光度法对固态发酵酒和新型白酒的显色现象进行了研究,建立了定量测定白酒中固态发酵酒含量的新方法。研究表明,固态发酵酒在碱性条件下,70℃恒温4h显色后,在363nm处吸光度值与其在白酒中的体积百分含量有良好的线性关系,其线性范围为25%～100%(v/v),相关系数r=0.991,回收率95.91%～100.8%,相对标准偏差(RSD)为1.14%,该法可用于市售白酒中固态发酵酒与新型白酒的鉴别及白酒中固态发酵酒所占体积百分含量的测定,具有快速、准确、可靠的优点。更多还原

【Abstract】 Spectrophotometry was applied to study coloration in new type liquor an d in liquor by solid fermentation method. Furthermore, a new method for quantifi cational measurement of the content of liquor by solid fermentation in liquor wa s described by UV-Vis spectra. The experimental results showed that liquor by so lid fermentation could occur color reaction when laid in thermostat water bath f or four hours at 70 ℃ on the alkali condition. After color reaction, the absorb ency of liquor by solid fermentation was proportional to its content in liquor a t 363 nm.The linear range was 25 %～100 %(v/v) with a correlation coefficient of 0.991,the recoveries and RSD were 95.91 %～100.8 % and 1.14 % respectively. Th e method could distinguish liquor by solid fermentation from new type liquor and determine the content of liquor by solid fermentation in liquor. This method ha d the advantages of rapidity, accuracy and reliability. (Tran. by YUE Yang)更多还原