Alcohol content
The highest alcohol content achieved was around 19%. Alcohol content increased gradually during 7th and the 14th day. In most cases, it has been seen that fermentation stopped by the 14th day itself, producing an alcohol content of around 11-13%. On the 21st day, the highest alcohol obtained was 19.3% and the lowest alcohol content was 8.5%. The pH of the samples was checked immediately after extraction, and there was a significant decrease, hence acidic fermentation was taking place. This study revealed that wine production from jackfruit juice by fermentation using Saccharomyces cerevisiae can be done in less than two weeks. It has also been seen that alcohol production is affected by various parameters. The result of the various tests performed was tabulated and is given in Tables 1 and 2. The cumulative percentage of alcohol produced on 7th, 14th and 21st day is shown in Figure 1.