Characterization of some physicochemical properties of spray-dried and freeze-dried sour cherry powders

Can Karaça A., Baskaya H., Guzel O., Ak M. M.

JOURNAL OF FOOD PROCESSING AND PRESERVATION, vol.44, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 44
  • Publication Date: 2020
  • Doi Number: 10.1111/jfpp.14975
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, Business Source Elite, Business Source Premier, CAB Abstracts, Compendex, Food Science & Technology Abstracts, INSPEC, Veterinary Science Database
  • Istanbul Technical University Affiliated: Yes


The main goal of this study was to compare glass transition temperature (Tg)- a(w) relations, critical water activity (a(wc)) values, particle morphology, moisture sorption behavior, total phenolic content, and stability of freeze-dried (FD) and spray-dried (SD) sour cherry powders. The Tg of the SD and FD powders decreased from 57 degrees C to 14 degrees C and from 47 degrees C to 15 degrees C, respectively, as the a(w) increased from 0.03 to 0.35. Higher Tg values were observed for SD powder compared to FD powder in the a(w) range (0.03-0.35) covered in this work. The a(wc) was 0.29 for SD powder and 0.26 for FD powder. Scanning electron microscopy images showed that FD sour cherry powder exhibited a more porous morphology compared to SD powder. Total phenolic content of SD and FD powders was found to be similar (16.1 +/- 0.3 mg GAE/g sour cherry dry matter). The results of this study suggest that physicochemical properties of spray-dried sour cherry powders are comparable to those obtained by freeze drying.