Effect of ozone, H2O2 and organic solvents on tannin content of Persian gum: Investigation of physicochemical properties
Year: 2025
Type: article
Abstract: The major challenge regarding Persian gum (PG) is its tannin content which acts as an anti-nutritional compound by binding to ions and proteins. Therefore, the effect of H 2 O 2 , ozone gas, and organic solvents on tannin removal of PG was investigated. For this purpose, PG was treated with H 2 O 2 and ozone at different concentrations. Moreover, organic solvents were applied at ratios of 1:10, 1:20, and 1:30 when PG was used in powder form, and at ratios of 1:2, 1:3, and 1:4 when the solvents (ethanol and acetone) combined with PG in dispersion form. Based on the results, the H 2 O 2 -treated sample exhibited the lowest a∗ and b∗ values, as well as the highest L∗, indicating its effectiveness in causing color fading. The appropriate solvent for tannin removal of PG in dispersion form was ethanol at the ratio of 1:2, while for PG in powder form, acetone at the ratio of 1:10 showed the best results. Tannin removal reduced the apparent viscosity, and the highest zeta potential belonged to the ethanol-treated sample (−29.95 mV). FTIR analysis indicated that –COOH groups of H 2 O 2 -treated PG remained undissociated; hence, this sample can be used where PG is intended to function as a non-adsorbing gum.
Source: LWT
Authors: Sarvenaz Goudarzi, Fatemeh Azarikia, Saman Abdanan Mehdizadeh
Institution: University of Tehran
Language: English
Subfield: Food Science
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $3,240
OpenAlex ID: W4416958422