Production, preliminary characterization and antitumor activity (SKOV-3 cell lines) in vitro of glycans from green tea

► Glycan from green tea was extracted with boiling water. ► Optimal extraction conditions for the glycans from green teas were obtained. ► Tea glycan has an average molecular weight of 8.3 × 105 Da. ► Ethanol extract of tea showed significantly higher antitumor activity.