A review on application of ultrasound and ultrasound assisted technology for seed oil extraction

Abstract

Oil has extensively been extracted from oil-bearing crops and traded globally as a major food commodity. There is always a huge demand from the fats and oils industries to increase oil yield because of profitability benefits. If extraction is conducted under mild operating conditions to preserve and improve the oil quality, then it would be an added value. Ultrasound that works on the cavitational action helps to fulfil the gap. Ultrasound is gaining tremendous interest as an alternative to replace the current conventional extractions approach because of its multiple benefits. Cavitation generated by ultrasound eases the release of oil from cell matrices, thereby allowing the extraction to be carried out under mild processing conditions. The effect enhances the oil yield whilst preserving the quality of the oil. In ultrasound, green solvents can be used to replace toxic organic solvents. Recent up-to-date approaches utilised a combination of ultrasound with enzyme, microwave and supercritical technology to further enhance the oil extraction. This review highlights a comprehensive work of the impact of ultrasound and ultrasound in combination with other technologies on oil extraction, which emphasises the extraction yield and physicochemical properties of the oil, such as fatty acid composition, oxidative stability with the retention of the lipophilic phytochemicals and iodine, saponification values and colour parameters. Understanding of ultrasonication techniques for oil extraction served to be essential and useful information for the fats and oils scientists from academia and industries to explore the possibility of employing a sustainable and mild approaches for extracting oil from various crops.

Bioevaluation, Pharmacokinetics and Molecular docking study of Phenylpropanoid rich rhizome essential oil of understudied Zingiber neesanum from Konkan region of India

“…After dehydrating the essential oil with Anhydrous Sod. Sulfate was kept in the freezer and the % yield was calculated after three replications (13).…”

Ultrasound assisted cyanotoxin extraction for nematode inhibition in soil

“…On the other hand, a probe/horn sonicator, used herein, provides direct sonication, where the formed cavities on collapsing result in intensified vibration as well as a uniform homogenous matrix [22] , that could have resulted in the defragmentation of the long chains into smaller filamentous chains. Additionally, the mild operating conditions of ultrasonication treatment, and faster extraction time, do not modify the metabolites, rather one of the main advantages of using ultrasonication is that it prevents the deterioration of the metabolites [56] .…”

Comparison of Four Oil Extraction Methods for Sinami Fruit (Oenocarpus mapora H. Karst): Evaluating Quality, Polyphenol Content and Antioxidant Activity

“…UAE has been used for the extraction of oils from fruit pulp [44], seeds [45] and agro-industrial by-products [46]. Yields ranging from 8 to 83% have been reported [47], with the highest values being obtained using ultrasonic cavitation. This phenomenon facilitates the release of the oil fraction from the plant cell wall, thereby allowing the extraction to be conducted at low frequencies [47,48].…”

“…Yields ranging from 8 to 83% have been reported [47], with the highest values being obtained using ultrasonic cavitation. This phenomenon facilitates the release of the oil fraction from the plant cell wall, thereby allowing the extraction to be conducted at low frequencies [47,48]. Density plays an important role because it affects oil absorption and mass transfer rates during the cooling of frying oils [49].…”