Characterization of mucilage from Opuntia ficus-indica grown wild in Apulia (southern Italy)

Mucilage is a polysaccharide polymer produced in many Cactaceae species, among which Opuntia ficus-indica (OFI). The OFI mucilage presents interesting properties for different food applications and industrial purposes.
Extraction and characterization for the applicability of mucilage have been gaining considerable attention for years.
This study reports the extraction, purification and bio-chemical characterization of mucilage from OFI cladodes from Apulia (Italy) ecotypes.
Mucilage extraction and purification was done as already reported (by overnight soaking in water and ethanol precipitation). The different steps of extraction and purification were tested for total phenolic content and antioxidant capacity.
Results indicated that the purification process reduced greatly the total phenolic content (55.5±4.9 mg GAE g^‑1), while maintaining a good antioxidant capacity (TEAC = 275.2±17.9 μmol TE g^‑1; ORAC 903.6±89.6 μmol TE g^‑1). Moreover, FTIR spectroscopy indicated a high abundance of carboxylic groups, suggesting a significant carboxylation degree of the extracted polysaccharides and/or the possible co-extraction of organic acids from OFI. Taken together, these preliminary results indicate mucilage from OFI cladode, from Apulia, to be considered for further food application.

XI International Congress on Cacti as Food, Fodder and Other Uses

F. Blando, F. Iaconeta, F. Milano, L. Giotta

mucilage, Opuntia ficus-indica, cladode, polysaccharides

https://doi.org/10.17660/ActaHortic.2026.1452.47