Effect of process parameters on stevioside and rebaudioside A content of stevia extract obtained by decanter centrifuge

Arslan Kulcan A., KARHAN M.

JOURNAL OF FOOD PROCESSING AND PRESERVATION, vol.45, no.2, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 2
  • Publication Date: 2021
  • Doi Number: 10.1111/jfpp.15168
  • 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
  • Akdeniz University Affiliated: Yes


The aim of this research is to determine the possibility of decanter extraction for the isolation of steviol glycosides from stevia leaves. Extraction parameters such as temperature, time, and leaf/water ratio were optimized by using "Response Surface Methodology." The optimal combination determined as a result of optimization studies was 25 degrees C, 1/27.6 leaf/water ratio, and 105 min extraction time. Under these conditions, experiments were carried out at three different speeds of 4,500, 4,900, and 5,280 rpm (2,264, 2,684, 3,117 g, respectively) in a decanter extraction system to investigate the effect of rotational speed. The amount of stevioside in samples obtained at 4,500, 4,900, and 5,280 rpm was 1080.82, 1919.18, and 2507.35 mg/L, respectively. The amount of rebaudioside A was 761.34, 1417.17, and 1801.93 mg/L, respectively. Results showed that the rotational speed of the decanter had a considerable effect on all the parameters examined.