Complex sentence: As fruits ripen, the sucrose content usually rises sharply, but some fruits contain almost no sucrose even when ripe, examples of which include grapes, cherries, blueberries, blackberries, figs, pomegranates, tomatoes, avocados, lemons, and limes.
Split into simpler sentences: As fruits ripen, their sucrose content usually rise sharply, but some fruits contain almost no sucrose at all. This includes grapes, cherries, blueberries, blackberries, figs, pomegranates, tomatoes, avocados, lemons and limes.