? 4 mystery Why does fruit become sweet? Fruit contain three types of sweet saccharides: sucrose, fructose, and glucose. As fruit ripens, enzymes become active, changing the amounts of the three saccharides. Fructose and sucrose are sweeter than glucose, so fruit becomes sweeter as the amount of fructose or sucrose increases! Mystery sooolved! Fruit becomes sweeter and more delicious because of fructose and sucrose.* s cto fru e it makes perfect sense. More sugar means more delicious! sucrose But now that i know why fruit is sweet, i'll enjoy eating it even more. Drooooool Whoa, down girl! * Additionally, substances such as sorbitol, xylose, and organic acids are also related to the sweetness or acidity of fruit. Biochemistry in our everyday Lives 135