APP下载

固态香醅法提高广东米酒总酯含量的工艺研究

2015-10-21郭梅君关箐怡何松贵

安徽农业科学 2015年20期

郭梅君 关箐怡 何松贵

摘要 [目的] 制备固态香醅来提高酿造米酒中乙酸乙酯和总酯的含量。[方法] 利用酒曲中筛选出的产酯酵母,制备成固态香醅,结合串蒸来提高米酒中总酯含量。[结果] 试验成功制备出固态香醅,1 kg香醅产乙酸乙酯为45 g,结合串蒸工艺使白酒中的总酯由0.465 g/L提升至4.960 g/L,提高10.7倍。[结论] 利用产酯酵母制备成固态香醅,结合串蒸工艺可大幅度提高广东米酒中总酯的含量是可行的。

关键词 固态香醅;乙酸乙酯;产酯酵母;串蒸

中图分类号 S509.9;TS262.3 文献标识码 A 文章编号 0517-6611(2015)20-249-03

Abstract [Objective]The solid material fermentation was used to increase the content of ethyl acetate and total ester in brewing wine. [Method] The solid material fermentation was produced with ester yeastsscreened from rice wine starters. The total ester in brewing rice wine was improved by layered distillation. [Result] The solid material fermentationwas succeed to made and produced 45gethyl acetate with per kilogram. The total ester is 4.960 g/L in the wine with layered distillation, increased 10.7 times than 0.465 g/L total ester in wine with the old process. [Conclusion] It is effective to increase total ester in Guangdong rice wine brewed by the solid material fermentation of ester yeasts and distilled bylayered distillation.

Key words Solid material fermentation; Ethyl acetate; Ester yeasts; Layered distillation

廣东米酒普遍存在呈香呈味物质含量少、口味淡薄的问题,提高其成分中的总酯含量可以改善白酒的质量,提高白酒的香气。通过发酵的方法增加广东米酒的香味不仅香气融合度高、口感自然舒适,是提高白酒总酯含量的有效途径,且以丢糟为原料,成本低廉,可变废为宝,同时起到节能减排的作用。笔者确定固态产酯工艺和生产应用方法,达到提高白酒风味物质含量的目的,优化培养固态香醅的最佳工艺条件,同时应用于生产,从而提高发酵酒的香味水平。

1 材料与方法

1.1 材料

1.1.1

菌种。酒饼、饼丸由广东省九江酒厂有限公司提供。

1.1.2

原辅料。玉米粉、麸皮,市场采购;酒糟,广东省九江酒厂有限公司蒸馏后下脚料;糖化酶,苏州宏德。

1.2 方法

酒精度,采用比重计法测定。乙酸乙酯测定,采用色谱法。仪器:GC1100气相色谱仪;色谱柱:2 m×3 mm不锈钢柱(PEG20M);

温度:柱温箱90 ℃,检测器130 ℃,气化室120 ℃;流速:氮气分压表0.35 MPa,仪器稳压表0.10 MPa;……

登录APP查看全文