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Low sugar jellies of berry fruits: the impact of low vs. high temperature regime on their chemical composition and antioxidativity

Simonovic, Mladen, Ostojic, Sanja, Micic, Darko, Pejin, Boris
Natural product research 2021 v.35 no.2 pp. 337-341
Rubus plicatus, anthocyanins, blackberries, chemical composition, cultivars, jellies, pectins, phenolic compounds, raspberries, raw materials, research, seeds, separation, strawberries, sugars, temperature, Serbia
This study focuses on the impact of low and high temperature regimes on the chemical composition and antioxidativity of low sugar berry fruits jellies. High quality fruits (strawberry, raspberry and blackberry) were collected from Western Serbia region, quite well recognised both nationally and internationally due to an extremely well developed practice in growing berry fruits. The obtained results have clearly indicated the importance of low temperature regime for enriched contents of both total phenolics and anthocyanins followed by an enhanced antioxidativity. Rubus fruticosus L. Čačak Thornless cultivar, the only autochthonous berry fruit variety screened herein, may be firmly recommended as a raw material for industrial production of low sugar blackberry jellies with exceptional characteristics. This innovative procedure of preparing berry fruit jellies have encompassed the application of low temperature regime (55 °C), lower content of sugar (40%), seeds separation from jellies followed by no use of pectin throughout the whole process.