How does instant autovaporization deepen the cold press-extraction process of sunflower vegetal oil?

Amal Zeaiter, Colette Besombes, Larbi Rhazi, Amira Haddarah, Tayssir Hamieh, Karim Allaf*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Sunflower oil industry is interested in both increasing yield and preserving quality of the extracted oil. The current work aimed to investigate the effect of texturing by instant controlled pressure-drop (DIC) on oil cold-press extraction. DIC texturing consists of heating at saturated dry-steam pressure P (200–700 kPa or 110–160 °C), for a short processing time t, followed by an instantaneous pressure-drop (20–40 ms) towards a vacuum (3–5 kPa). This resulted in increasing oil pressing-yield up to 46% and 33%, for linoleic and oleic varieties, respectively. It also increased the whole-oil availability by 11%, with the conservation of the biochemical composition of both oil and residual cake. A multi-criteria optimization of the DIC operating parameters; P and t, was performed through a 5-level Central Composite Design (CCD) and statistical analyses. This highlighted the direct significant effect of t on the oil yield while greatly preserving the quality of the final products.

Original languageEnglish
Pages (from-to)70-78
Number of pages9
JournalJournal of Food Engineering
Volume263
DOIs
Publication statusPublished - Dec 2019
Externally publishedYes

Keywords

  • Sunflower seeds
  • Instant controlled pressure-drop (DIC)
  • Cold-press extraction
  • Oil quality
  • Central composite design (CCD)
  • Response surface methodology (RSM)
  • SOLVENT-EXTRACTION
  • PHYTOSTEROLS
  • PRETREATMENT
  • RAPESEED
  • QUALITY
  • DESIGN

Fingerprint

Dive into the research topics of 'How does instant autovaporization deepen the cold press-extraction process of sunflower vegetal oil?'. Together they form a unique fingerprint.

Cite this