Instant controlled pressure drop technology and ultrasound assisted extraction for sequential extraction of essential oil and antioxidants

Abstract

The instant controlled pressure drop (DIC) technology enabled both the extraction of essential oil and the expansion of the matrix itself which improved solvent extraction. The sequential use of DIC and Ultrasound Assisted Extraction (UAE) triggered complementary actions materialized by supplementary effects. We visualized these combination impacts by comparing them to standard techniques: Hydrodistillation (HD) and Solvent Extraction (SE). First, the extraction of orange peel Essential Oils (EO) was achieved by HD during 4h and DIC process (after optimization) during 2 min; EO yields was 1.97 mg/g dry material (dm) with HD compared to 16.57 mg/g d m with DIC. Second, the solid residue was recovered to extract antioxidant compounds (naringin and hesperidin) by SE and UAE. Scanning electron microscope showed that after HD the recovered solid shriveled as opposite to DIC treatment which expanded the product structure. HPLC analyses showed that the best kinetics and yields of naringin and hesperidin extraction was when DIC and UAE are combined. Indeed, after 1h of extraction, DIC treated orange peels with UAE were 0.825 ± 1.6 × 10(-2)g/g of dry material (dm) for hesperidin and 6.45 × 10(-2) ± 2.3 × 10(-4)g/g d m for naringin compared to 0.64 ± 2.7 × 10(-2)g/g of dry material (dm) and 5.7 × 10(-2) ± 1.6 × 10(-3)g/g d m, respectively with SE. By combining DIC to UAE, it was possible to enhance kinetics and yields of antioxidant extraction.

Instant controlled pressure drop texturing for intensifying ethanol solvent extraction of olive (Olea europaea) leaf polyphenols

“…Expansion affects the olive leaf structure and cell walls, which make solvent extraction easier. Several recent studies showed similar results[17,18,28].…”

“…The DIC treatment was used as an intensifying treatment for the extraction of different molecules such as flavonoids [20], essential oils [18,19], oligosaccharides [27] and antioxidants [28].…”

Deodorization by instant controlled pressure drop autovaporization of rosemary leaves prior to solvent extraction of antioxidants

“…This was observed and explained in terms of fundamental and experimental aspects. Indeed studies were reported for Kananga flowers (Kristiawan, Sobolik, & Allaf, 2008), lavandin , myrtle leaves (Berka-Zougali, Hassani, , orange peel (Allaf, Tomao, Ruiz, & Chemat, 2013), etc. providing very relevant results in terms of essential oil extraction.…”

Optimization of Ultrasound Extraction of Cactus Pear(Opuntia ficus indica)Seed Oil Based on Antioxidant Activity and Evaluation of Its Antimicrobial Activity

“…Ultrasound has been used to extract antioxidants from many food materials including seeds. Ultrasound and ultrasoundassisted extractions use sound waves to produce cavitation microbubbles that collapse violently in the sample and facilitate the release and extraction of several compounds [23][24][25]. Some researchers had evaluated ultrasound-assisted extraction, in an open system, using a sonicator probe directly on the liquid sample to obtain seed oil from flaxseed [26], Korean pine [27], and pomegranate [28].…”