Effect of ultrasound-assisted vacuum extraction on biological properties and bioactive compounds of mango (Mangifera indica L.) peel and flesh

Ultrasound treatment under vacuum for 40 min led to an increase in the total phenolic and flavonoid contents of flesh. However, phenolic and flavonoid contents of mango peel were close to their initial values under the same conditions. The highest total phenolic and flavonoid amounts of peel were obtained after 30 min of sonication under atmospheric condition. Similarly, carotenoid contents of peel and flesh reached their maximum values after 30 min of sonication under atmospheric condition. DPPH free radical scavenging activity of peel and flesh increased as the duration of ultrasound treatment under vacuum prolonged, especially for 40 min. Phenolic acids and flavonoids in peel and flesh were determined as 3,4-dihydroxybenzoic acid (9.05-18.51 g/100 g and 0.78-1.16 g/100 g, respectively) and catechin (24.28-66.82 mg/100 g and 3.16-6.61 mg/100 g, respectively). The use of ultrasound during the extraction process improved the bioactive properties of flesh, so the application of sonication in combination with vacuum can be used as an alternative. Practical applications Mango draws attention thanks to its Vitamin C, carotenoid, and phenolic compound content. One of the alternative extraction methods is ultrasound-assisted extraction. Ultrasound-assisted extraction increases yields and eliminates the disadvantages of conventional technologies. The components damaged by heat treatment, especially bioactive components, are effectively extracted at low temperatures.