Abstract
Dragon fruit (Hylocereus spp.) is a tropical fruit known for its vibrant colours and unique flavour. While the fleshy pulp is widely consumed, the peels are often discarded as waste, leading to environmental concerns. However, recent studies have shown that dragon fruit peels possess various bioactive compounds that can be extracted and utilized for multiple applications. This study aims to explore the valorization of dragon fruit peels through extraction methods, thereby turning waste into valuable resources. Different green extraction techniques, such as microwave-assisted extraction, ultrasound-assisted extraction and supercritical fluid extraction, can be employed to optimize the extraction efficiency and yield. Furthermore, additional purification steps, such as filtration or chromatography, may be employed to obtain highly pure and concentrated extracts. The bioactive compounds from dragon fruit peels have shown promising potential in various fields. They exhibit antioxidant properties and antimicrobial activity and have been found to possess anti-inflammatory and anticancer properties. Additionally, these extracts can be used as natural food colourants, functional ingredients in food and beverages, or additives in the cosmetic and pharmaceutical industries. Utilizing this waste material can reduce dependence on synthetic chemicals and promote sustainable practices in industries.
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