Ultrasound-Assisted Extraction of Blackberry Seed Oil: Optimization and Oil Characterization

Abstract

Ultrasound-assisted extraction (UAE) was applied to extract oil from blackberry (BB) seeds. The effect of UAE conditions on oil recovery and quality was investigated. Favorable experimental conditions (ultrasound intensity (UI), extraction temperature, and time) were investigated using response surface methodology (RSM). A Box–Behnken design was used to predict optimized conditions for BB seed oil extraction. These conditions were as follows: 13.77 W/cm2 UI, 45 °C extraction temperature, and 15 min extraction time. The experimental value obtained for extraction efficiency under optimal conditions was 87 ± 0.34%, in good agreement with the optimized predicted value. UAE does not affect the oil composition and confers higher antioxidant values in BB seed oil in comparison with Soxhlet extraction.

A Review of Emerging Technologies for the Extraction of Bioactive Compounds from Berries (Phalsa Berries)

“…Oil possesses a high level of free fatty acids with an ideal amount of omega-3 and omega-6 fatty acids. Sterols, carotenoids, tocopherols, and phenolic compounds have additional beneficial components of oil [19,20]. Because of its increased level of bioactive compounds, such as anthocyanins, flavonoids, tannins, phenolics, and flavonoids, phalsa has recently been regarded as healthy in human diets [17,21].…”