Fructo-oligosaccharides in table grapes and response to storage

► Fructo-oligosaccharides (FOS) are permanent components in table grapes. ► Individual concentrations of the five FOS by HPAEC-PAD analysis. ► 1-Kestose and kestopentaose accumulation in response to high CO2 levels. ► High CO2 treatment affects the quantity and distribution of FOS. ► FOS are environmentally regulated.