Effects of concentration methods on bioactivity and color properties of poppy (Papaver rhoeas L.) sorbet, a traditional Turkish beverage


Ekici L.

LWT-FOOD SCIENCE AND TECHNOLOGY, cilt.56, ss.40-48, 2014 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 56 Konu: 1
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.lwt.2013.11.015
  • Dergi Adı: LWT-FOOD SCIENCE AND TECHNOLOGY
  • Sayfa Sayıları: ss.40-48

Özet

This study investigated the effects of concentration methods such as vacuum, microwave and conventional heating methods on total phenolic and anthocyanin contents, antiradical activity, antioxidant capacity and color of Papaver rhoeas L. (poppy) sorbet, a traditional beverage of Turkey. The effects of concentration method on bioactivity and color of sorbet were also determined during the 90 day-storage at 4, 20 and 37 degrees C. The sample obtained with vacuum method (1022.84 mg GAE/kg) had the highest phenolic content compared to microwave (925.77 mg GAE/kg) and conventional methods (936.42 mg GAE/kg). While the lowest initial anthocyanin content was found to be 571.31 mg cyn-3-glu/kg in the conventional method, the highest anthocyanin content were determined to be 774.49 mg cyn-3-glu/kg in the vacuum treated sorbet at the beginning of the storage. The results revealed that the poppy sorbet was an excellent source of phenolic and anthocyanin. Storage degradation of poppy anthocyanins followed first order reaction kinetics. Concentration method and storage temperature had significant effect on the bioactivity and color of sorbets. In general, vacuum method was the best treatment for preserving the bioactivity and color of poppy sorbet followed by microwave during the 90-day storage. (C) 2013 Elsevier Ltd. All rights reserved.

This study investigated the effects of concentration methods such as vacuum, microwave and conventional heating methods on total phenolic and anthocyanin contents, antiradical activity, antioxidant capacity and color of Papaver rhoeas L. (poppy) sorbet, a traditional beverage of Turkey. The effects of concentration method on bioactivity and color of sorbet were also determined during the 90 day-storage at 4, 20 and 37 °C. The sample obtained with vacuum method (1022.84 mg GAE/kg) had the highest phenolic content compared to microwave (925.77 mg GAE/kg) and conventional methods (936.42 mg GAE/kg). While the lowest initial anthocyanin content was found to be 571.31 mg cyn-3-glu/kg in the conventional method, the highest anthocyanin content were determined to be 774.49 mg cyn-3-glu/kg in the vacuum treated sorbet at the beginning of the storage. The results revealed that the poppy sorbet was an excellent source of phenolic and anthocyanin. Storage degradation of poppy anthocyanins followed first order reaction kinetics. Concentration method and storage temperature had significant effect on the bioactivity and color of sorbets. In general, vacuum method was the best treatment for preserving the bioactivity and color of poppy sorbet followed by microwave during the 90-day storage.