机械化生产工艺对窖泥理化指标影响的初探

以机械化生产程度较高的川南某名优浓香型白酒厂的窖泥为研究对象,对其理化指标在窖池不同部位的分布规律进行研究。结果表明,有效磷、腐殖质和总酸等指标的分布规律与传统生产工艺基本相近;水分含量、pH值、氨基酸态氮以及总氮等指标与传统生产工艺则存在较大的差异。水分含量随着窖池部位的降低呈下降趋势,与传统生产工艺窖泥含水量的分布规律完全相反;pH值在3.5～4.0左右,窖池整体呈酸性,与传统生产工艺窖泥pH值呈中性不同;氨基酸态氮含量随着窖泥部位的降低呈下降趋势,与传统生产工艺窖泥氨基酸态氮含量的分布完全相反;中部窖泥总氮含量最高,下部窖泥总氮含量高于上部窖泥,不同于传统生产工艺窖泥随着窖泥部位下降呈现递增的趋势。

Preliminary investigation on the effect of mechanized production process on physicochemical indexes of pit mud

Using the pit mud of a famous strong-flavor Baijiu (Chinese liquor) factory in southern Sichuan Province with high mechanized production level as the research object, the physicochemical indexes were studied in different parts of the pits. The results showed that the distribution of the available phosphorus, humus and total acid were basically similar to the traditional production process, but the moisture, pH value, amino nitrogen and total nitrogen had a big difference with the pits of traditional production process. The moisture showed a downward trend with the reduction of the pit location, which was completely contrary to the distribution law of the pit mud with the traditional production process. The pH value was around 3.5-4.0, and the whole pit was acidic, which was different from the neutral pH of the traditional production process of pit mud. The content of amino nitrogen content decreased with the reduction of pit mud location, which was completely opposite to the distribution of amino nitrogen content of traditional production process. The total nitrogen content of middle pit mud was the highest, and in the lower pit mud was higher than that of the upper pit mud. Unlike traditional production pit mud, the pit mud presented an increasing trend with the decline of pit mud location.