Fermentation of foods by lactic acid bacteria is a useful way to improve the nutritional value of foods. In this study, the\nhealth-promoting effects of fermented papaya juices by two species, Lactobacillus acidophilus and Lactobacillus plantarum, were\ndetermined. Changes in pH, reducing sugar, organic acids, and volatile compounds were determined, and the vitamin C, total\nphenolic content, and flavonoid and antioxidant capacities during the fermentation process were investigated. Juices fermented\nby Lactobacillus acidophilus and Lactobacillus plantarum had similar changes in pH and reducing sugar content during the 48 h\nfermentation period. Large amounts of aroma-associated compounds and organic acids were produced, especially lactic acid,\nwhich increased significantly (
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