添加中药材对绿衣观音土曲品质影响及相关性分析

Effects of Chinese medicinal materials addition on quality of Green-covering Guanyin Tuqu and correlation analysis

为探究中药材的加入对清香型白酒酒曲品质的影响,在绿衣观音土曲制备中加入不同添加量的10种中药材。对不同添加量中药材制备绿衣观音土曲的品质指标及存放时间进行分析,并探讨中药材添加量与绿衣观音土曲品质指标的相关性。结果表明,中药材添加量5.0%制作的土曲泡度较好,曲心红色,有少量黑心,药材味适宜。绿衣观音土曲存放时间1月质量较佳,其水分为4.56%、酸度为0.41 mmol/10 g、氨基酸态氮为0.27 g/kg、糖化率为31.2 g/100 g、发酵率为35.9%,乳酸菌、酵母和霉菌数量分别为163.5×10^(6)CFU/g、280.5×10^(6)CFU/g、2.0×10^(6)CFU/g,糖化酶、淀粉酶、酸性蛋白酶酶活分别为1217.7 U/m L、50.6 U/m L、44.0 U/m L。相关性分析表明,中药材添加量、水分、酸度和发酵率之间呈显著正相关(P<0.05),且这四个指标与淀粉酶活呈现显著负相关(P<0.05);霉菌数量与中药材添加量和水分呈显著负相关(P<0.05)。

In order to investigate the effect of adding Chinese medicinal materials on the quality of light-flavor(Qingxiangxing)Baijiu Jiuqu,10 Chinese medicinal materials with different addition were added into the Green-covering Guanyin Tuqu during preparation process.The quality indexes and storage time of Green-covering Guanyin Tuqu prepared with different addition of Chinese medicinal materials were analyzed,and the correlation between Chinese medicinal materials addition and quality indexes of the Green-covering Guanyin Tuqu was explored.The results showed that the Tuqu prepared with 5.0%Chinese medicinal materials addition had a better bubble degree,red color of Qu heart,a small amount of black heart,and suitable medicinal taste.The quality of the Tuqu was better when stored for one month,the moisture,acidity,amino acid nitrogen,saccharification rate and fermentation rate were 4.56%,0.41 mmol/10 g,0.27 g/kg,31.2 g/100 g,and 35.9%,respectively.The number of lactic acid bacteria,yeast,and mold was 163.5×10^(6) CFU/g,280.5×10^(6) CFU/g,and 2.0×10^(6) CFU/g,respectively.The enzyme activities of saccharase,amylase,and acid protease were 1217.7 U/ml,50.6 U/ml and 44.0 U/ml,respectively.The correlation analysis showed that there were significant positive correlations among Chinese medicinal materials addition,moisture,acidity and fermentation rate(P<0.05),and there were significant negative correlations between these four indexes and amylase activity(P<0.05).There was a significant negative correlation between the mold number and Chinese medicinal materials addition and water(P<0.05).