title: Degradation kinetics of anthocyanins from European cranberrybush (Viburnum opulus L.) fruit extracts. Effects of temperature, pH and storage solvent.
abstract: European cranberrybush (Viburnum opulus L.) fruits are well known for their biological properties, of which some are due to the presence of anthocyanins in the berries. Current literature provides little information concerning these fruits. The stability of anthocyanins from Viburnum opulus fruits, in aqueous and ethanolic extracts, stored under darkness for 7 days at different temperatures (2 °C, 37 °C and 75 °C) and pH values (pH = 3 and 7), was studied here. The lowest stability was showed by the anthocyanins from the water extract stored at 75 °C and pH = 7, with half-life and constant rate values of 1.98 h and 0.3488 h⁻¹, respectively. The results showed a good correlation between the total anthocyanin content (determined using the pH differential method) and the time of storage, with determination coefficients varying from R² = 0.9298 to R² = 0.9971. Results indicate that the storage degradation of anthocyanins followed first-order reaction kinetics under all investigated conditions.
authors.affiliation: Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos Str., 400028 Cluj-Napoca, Romania.
authors.forename: Bianca
authors.initials: B
authors.lastname: Moldovan
authors.forename: Luminiţa
authors.initials: L
authors.lastname: David
authors.forename: Cristian
authors.initials: C
authors.lastname: Chişbora
authors.forename: Claudia
authors.initials: C
authors.lastname: Cimpoiu
mesh_terms: D000872:Anthocyanins / Q000737:chemistry*; D005519:Food Preservation / Q000379:methods; D005638:Fruit / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D010936:Plant Extracts / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D013696:Temperature; D027925:Viburnum / Q000737:chemistry*
chemical_list: D000872:Anthocyanins; D010936:Plant Extracts; D012997:Solvents