Fruit Peel Extracted Polyphenols Through Ultrasonic Assisted Extraction: A Review

Abstract

Fruit are rich source of antioxidants and total phenolic compounds (TPC). They are helpful in improving human health. As the consumption of fruit is increasing day by day, its wastage is also increasing. Currently, there is an increasing interest worldwide in the extraction of valuable chemicals from underutilized agro-wastes to investigate their potential commercial applications in cosmetics, drugs, and food preservation. The peels of many fruits, which are a byproduct of underutilized fruit processing, are a great source of various bioactive substances, including tannins, flavonoids, phenolics, and particularly limonoids, which are uncommon in other plants. In this review, it is discussed how ultrasonic energy has great importance in extracting polyphenols. By applying ultrasonication with enzymolysis or solvent, the yeild of polyphenols extract increases. Polyphenols present in different fruit peels help in improving human health as a preventative treatment agent against several oxidative stress degenerative disorders. Ultrasonic assisted extraction (UAE) breaks the cell wall and intracelleluar material comes out. In this way, it increases the yield of different polyphenols in fruit peel.