Studies on the Processing of Korean Traditional So-Ju, Jindo-Hongju -I. Changes in Components of Hong-ju Mash Fermented by Different Methods-

한국(韓國) 전통소주(傳統燒酒) (진도홍주(珍島紅酒)) 제조(製造)에 관(關)한 연구(硏究) -제1보. 제조방법에 따른 홍주 발효술덧의 성분변화-

This study was conducted to establish traditional manufacturing process of Hongju, a traditional spirit by traditional Kokja and Koji method based on different materials. In the fermentation process, the changes of temperature, pH, total acid, alcohol, total sugar and microflora in mash were analyzed. During the whole fermentation period, the temperature in mash made by Kokja method was reached to $30^{\circ}C$, and that of Koji method was reached $33^{\circ}C$. There was no significant difference in pH by different treatments and the initial pH in Koji method was pH 6.0 and the final pH was 4.0. The content of total acid was higher in mash processed by Kokja method than that of Koji method. Alcohol content was higher in mash processed by Koji method. The content of total sugar in all samples were reduced gradually according to progress of fermentation. Yeast populations in all samples were increased up to 6 days of fermentation and then decreased gradually. Lactic acid bacteria were increased until 3 days of fermentation and then decreased until the fermentation completed.