5/21/2023 0 Comments Make histogram in excel xlstatTo produce Baijiu, raw materials need to go through complex solid-state fermentation under the influence of the microorganisms in Jiuqu, and then base liquor is produced following the Zeng distillation process. The unique manufacturing process produces a unique flavor of Baijiu. Quality determines the value of Baijiu, and the flavor is the core element of quality. In 2021, 7.156 billion liters of Baijiu were produced, with a sales revenue of USD 89.409 billion. It has a broad market and a large number of consumers and constitutes the largest segment of the Chinese alcoholic beverage industry. There were 15 compounds with variable importance in projection (VIP) values >1, and they were considered potential aroma markers for quality prediction.īaijiu is a traditional fermented and distilled Chinese alcoholic beverage. Partial least squares regression (PLSR) analysis effectively distinguished four kinds of FJ and revealed associations between the orthonasal aroma attributes and the aroma compounds with OAVs >1. The results suggested that high-grade FJ had a rich, pleasant and lasting retronasal aroma perception and exhibited pleasant orthonasal aroma of floral, fruity, sweet and grassy. Temporal dominance of sensation (TDS) and quantitative descriptive analysis (QDA) were used to characterize the sensory differences. Among these compounds, there were 28 compounds with odor activity values (OAVs) greater than one in all four wines, which indicated that they might contribute to the characteristic aroma of FJ. The results showed that a majority of aroma compounds in high-grade FJ had higher aroma intensities and concentrations. A total of 88 aroma-active compounds were identified, and 70 of them were quantified. Aroma-active compounds were analyzed by liquid-liquid extraction (LLE) coupled with gas chromatography-olfactometry-mass spectrometry (GC-O-MS). This study comprehensively characterized and compared the aroma differences between four different grades of Fenjiu (FJ, the most representative light-flavor Baijiu).
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