Green extraction and simultaneous inclusion complex formation of Sideritis scardica polyphenols
2017
Igoumenidis, P. E. | Korompokis, K. | Mourtzinos, I. | Karathanos, V.T.
Sideritis spp. (also known as Mountain tea), is a very common herb in Mediterranean basin, rich in bioactive polyphenolic ingredients. In this study, extraction from Sideritis scardica(SS) and concomitant inclusion complex formation of polyphenols in aqueous solutions of cyclodextrins (CDs) was investigated, by estimating the total phenolic content (TPC) and theantioxidant capacity of the extracts. Our results showed that the utilization of cyclodextrins boost the extraction yield of polyphenols. Both TPC and antioxidant capacity of SS aqueousextracts, containing CDs, presented greater values compared to pure SS aqueous extracts. Furthermore, the implementation of differential scanning calorimetry (DSC), conducted under inert and oxidative conditions, suggested the potential formation of inclusion complexes. The green extraction of Sideritis using cyclodextrins could pave the road for herb’s more effective extraction and use in food and nutraceutical industry.
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