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基于电子鼻和气质联用技术的浓香型白酒分类 总被引:1,自引:0,他引:1
该研究分别利用电子鼻和气质联用(gas chromatography-mass spectrometry,GC-MS)分析7种不同品牌浓香型白酒的差异。结果表明,电子鼻的S2、S6、S7和S9 4个传感器对不同品牌浓香型白酒具有较好的响应信号,经主成分分析(principal component analysis,PCA)筛选后可以作为浓香型白酒差异的特征指标来衡量。基于传感器信号,比较了PCA和线性判别对不同各品牌浓香型白酒的分类效果,PCA分析能够对不同品牌白酒进行较好区分。GC-MS分析表明,不同品牌浓香型白酒风味物质含量存在明显差异,而PCA分析中关系密切的样品在风味成分层面存在相似性。该研究提供了一种基于电子鼻、GC-MS技术和数理统计分析相结合的浓香型白酒分类方法,为浓香型白酒的快速质量分类方法的开发提供了理论和数据支撑。 相似文献
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一种浓香型白酒模糊综合评判方法 总被引:2,自引:2,他引:2
通过对浓香型白酒的色、香、味、格的定性描述.根据粗集理论,定义了色泽、香味、口味、风格在白酒评价中的重要性因子.运用模糊综合评判方法进行数学模糊推理,提出了一种模糊综合评判方法,在白酒的评价中避免了对白酒色谱骨架成分和微量成分的复杂分析.根据浓香型白酒的典型代表泸型白酒的模糊综合评判,证实了该方法的可行性和有效性. 相似文献
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为了探究更加高效科学的原酒质量等级评价方法,本文以浓香型白酒原酒为研究对象,首先对原酒进行感官定级以及通过气相色谱-四极杆飞行时间质谱(GC-QTOF MS)定性和定量分析样品中的43种挥发性风味成分。然后对方法的精密度、重复性和稳定性进行考察,并对测定的结果进行因子分析和回归分析。结果表明:三个质量等级等体积混合酒样中43种挥发性风味成分的相对保留时间和含量的RSD均≤2.98%,该方法具有较好的精密度、重复性和60 h以内的稳定性;10个浓香型白酒原酒通过感官品评可以分为3个等级,通过因子分析剔除掉特征值小于1的主成分中最大特征向量对应的变量,结果保留的23种挥发性风味成分也能够将该批次3个等级原酒进行有效分类,并进一步分析建立了浓香型原酒等级数学评判模型Y(感官品评综合得分)=8.2329F(主成分综合得分)+86.4,R2=0.9801,准确率验证为85.71%,可以对此类浓香型原酒样品的3个等级进行初步评价。 相似文献
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以不同等级的浓香型白酒为研究对象,利用气相色谱-质谱联用(GC-MS)技术建立浓香型白酒微量成分的指纹图谱,采用稀疏主成分分析(SPCA)提取GC-MS图谱前7个稀疏主成分构建白酒成分特性的综合指标,进而采用回归分析建立浓香型白酒质量评价的客观模型。验证实验结果表明,建立的白酒质量评价模型与感官评价的评分绝对误差<3,在实现特级、优级、一级、二级四个等级的评价中,正确率达到94%。研究表明,不同等级的白酒的GC-MS图谱的稀疏主成分存在较明显差异,该研究建立的白酒质量评价模型能有效地实现白酒等级的评判,为白酒质量控制及等级鉴定提供了一种客观方法。 相似文献
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从浓香型白酒中的微量成分—酸、酯、醇类、醛酮类化合物的风味特征及含量对酒质的作用入手,分析其与浓香型白酒酒质的关系,指出同样是浓香型白酒,由于不同地区所产酒中的微量成分具有差异性,所以其风味各有不同,且个性化明显. 相似文献
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《Journal of the Institute of Brewing》2017,123(1):5-12
Chinese Baijiu (Chinese spirit or Chinese liquor) is one of the six major distilled spirits in the world, and is renowned overseas. Chinese Baijiu has a long history of more than 1000 years when people first begin to brew liquor using distillation. So far, Chinese Baijius have formed 12 types according to their flavour characteristics. The strong flavour Chinese spirit is regarded as one of the typical representatives, and occupies a > 70% market share in China. The liquor brewing process is under an open environment, with grains as the fermentation substrates, as well as Daqu as the saccharifying ferment. The brewing process is complex and impacted by multiple factors. Among the factors, the microorganisms have important influences on the brewing process and product quality of liquors. In the past decades, a series of research achievements have been made with strong flavour Chinese spirits. However, reviews related to this field are relatively few. In this paper, we have reviewed strong flavour Chinese spirits including the introduction, brewing process, microorganism diversity of Daqus , fermented grains and pit muds, and the application of microbes. Copyright © 2017 The Institute of Brewing & Distilling 相似文献
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Diqiang Wang Liangqiang Chen Fan Yang Heyu Wang Li Wang 《Journal of the Institute of Brewing》2019,125(2):214-221
As one of the three major distilled spirits in the world, traditional Chinese liquor has a distinctive aroma and taste. The brewing process typically involves two stages: the Daqu‐making process and the liquor‐making process. Further, it commonly adopts solid state fermentation in an open environment, which involves diverse microorganisms such as bacteria and fungi. Yeasts, as an integral brewing microorganism, are not only a dominant force in the fermentation process but also play a key role in the quality and character of different flavour liquors. Studies on yeasts associated with Chinese liquor have rarely compared them with those associated with other alcoholic beverages (wine, sake, etc.), especially in the microbiome‐related flavour of the alcoholic beverage. Here, we review the Chinese liquor brewing process, the yeast community in the brewing process, the yeast derived flavour compounds, the interaction between yeasts and other microorganisms and gene level modifications. © 2019 The Institute of Brewing & Distilling 相似文献
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中国白酒生产中所特有的制曲技术、复式糖化发酵工艺、甑桶蒸馏技术、勾调技术和微量成分等在世界各种蒸馏酒中独具一格,而威士忌酒以其特有的液态单菌种发酵、壶式蒸馏技术和橡木桶贮存在世界蒸馏酒中闻名.论述了中国白酒与威士忌酒的起源,并从原料、糖化发酵剂、发酵工艺等方面阐述了中国白酒与威士忌酒的特征和典型性区别.对进一步较全面、系统地了解中国白酒与威士忌酒有一定的借鉴作用. 相似文献
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Performance of indigenous yeasts in the processing of Chinese strong‐flavoured liquor during spontaneous mixed solid‐state or submerged fermentation
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To explore the in situ metabolic characteristics of yeasts involved in the spontaneous fermentation process of Chinese strong‐flavoured liquor, a comparison was conducted between solid‐state fermentation (SSF) and submerged fermentation (SmF) when supplemented with 24 indigenous yeast strains, with a focus on the production of ethanol and a broad range of volatile compounds responsible for the characteristics of Chinese strong‐flavoured liquor. Under the various experimental conditions, the 24 indigenous yeast strains showed different influences on the mixed fermentation system. The fluctuations caused by different yeast strains in the mixed system were less than those caused by the different fermentation modes relative to the formation of flavour compounds. SSF was found to be more suitable for the production of ethanol, methanol and ethyl lactate, whereas SmF was more suitable for the production of 10 higher alcohols, four esters and four acids. This study revealed the relationships amongst the indigenous yeasts, SSF, and the distinctive flavour profiles of Chinese strong‐flavoured liquor. This work provides evidence of the existence of internal stability in spontaneous SSF, thereby facilitating a better understanding of the fermentative mechanism in the SSF process for Chinese strong‐flavoured liquor production Copyright © 2015 The Institute of Brewing & Distilling 相似文献
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该研究针对不同香型、品牌的白酒,利用斑马鱼饮后行为变化结合各酒样中高级醇、醛类物质主成分分析(PCA)推测影响饮后不适的相关成分,从而表征饮后舒适度。结果表明,通过比较斑马鱼行为参数比发现同一香型白酒饮后舒适度相似,不同香型间差异较大。馥郁香型白酒的饮后舒适度前期与酱香型白酒相近,后期与浓香型白酒相近。馥郁香型白酒与酱香型、清香型白酒组在停止暴露白酒后20 min时斑马鱼平均速率比接近于1,三者醒酒时间接近。导致斑马鱼饮后不适感最强的酒样中仲丁醇、2-戊醇、正丁醇、正戊醇、正己醇、2,3-丁二醇和异戊醛含量较高,推断其中起主要作用的正丁醇、正戊醇和正己醇是引起饮后不适的关键物质。该研究为建立白酒质量控制体系提供参考。 相似文献