This research purpose to know the impact of long fermentation with yeast to suweg tuber to know the value of dissolve glucose. The dissolve glucose between times of fermentation about 24 hours, 48 hours and 72 hours. This research used free variable which was long fermentation and bound variable is glucose value of flour in suweg tuber fermentated. To know the impact of this research, used the "RAL" method. Certainly of glucose value do with Anthrone method used spectrophotometer. The result of research pointed long impact fermentation in glucose value of suweg tuber fermentated. Value of dissolve glucose in suweg tuber fermentated has times of fermentation about 24 hours, 57,77 ppm: 48 hours 76,60 ppm and 72 hours 98,19. At last it should conslused that as long as fermentation (72 hours) make highest glucose (98,19 ppm
                        
                        
                        
                        
                            
                                Copyrights © 2010