Analysis of resistant starch degradation in postharvest ripening of two banana cultivars: Focus on starch structure and amylases

•Higher RS content and lower RS/total starch reducing rate in Plantain than Cavendish.•Starch granules of Cavendish were bigger and rounded than in Plantain.•β-Amylases play a vital role in faster starch degradation in Plantain.•Other amylases were also up-regulated specifically in Plantain.