Recent trends in sugar content and pH in contemporary soft drinks.

Purpose: The purpose of this study was to determine the content of sucrose, glucose, total sugar, and pH in a range of popular contemporary Japanese soft drinks and compare their changes in different periods.

Methods: The pH value and content of sucrose and glucose of popular Japanese soft drinks were determined, and this study's results were compared with the previous data of beverages in 1978, 1981, 1985, and 1997.

Results: Coffee drinks showed the highest content of sucrose, while carbonated diet drinks showed the lowest.