Valorization of rambutan (Nephelium lappaceum L.) peel: Chemical composition, biological activity, and optimized recovery of anthocyanins

• Type: Article in International Scientific Journal
• Date: 2023

Authors

Albuquerque, BR (Author) Other; Pinela, J (Author) Other; Dias, MI (Author) Other; Pereira, C (Author) Other; Petrovic, J (Author) Other; Sokovic, M (Author) Other; Calhelha, RC (Author) Other; Beatriz B P P Oliveira (Author) FFUP; Ferreira, ICFR (Author) Other; Barros, L (Author) Other

Journal

Title: Food Research International

Vol. 165

ISSN: 0963-9969

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus

Other information

Authenticus ID: P-00X-YF9

DOI: 10.1016/j.foodres.2023.112574

Abstract (EN): Chemical constituents and bioactive properties of rambutan (Nephelium lappaceum L.) peel were characterized and heat-/ultrasound-assisted extractions (HAE/UAE) of anthocyanins were optimized by response surface methodology. Five organic acids, the alpha-, gamma-, and delta-tocopherol isoforms, and twenty-five fatty acids (36.8 % oleic acid) were identified, as well as a phenolic profile composed of ellagitannin derivatives, geraniin isomers, ellagic acid, and delphinidin-O derivatives. The extract showed antioxidant activity via lipid peroxidation (IC50 = 2.79 +/- 0.03 mu g/mL) and oxidative hemolysis (IC50 = 72 +/- 2 mu g/mL) inhibition, and displayed antibacterial and antifungal properties (MIC <= 1 mg/mL). On the other hand, no cytotoxicity was observed in tumor and non -tumor cell lines up to 400 mu g/mL. The recovery of anthocyanins was more effective using HAE than UAE, allowing greater yields (16.2 mg/g extract) in just 3 min and using lower ethanol proportions. Overall, rambutan peel could be upcycled into bioactive ingredients and natural colorants for industrial applications.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10