Advanced characterization of polyphenols from Myrciaria jaboticaba peel and lipid protection in in vitro gastrointestinal digestion

Author(s)

Tarone, Adriana Gadioli ^[1] ; Goupy, Pascale ^[2] ; Ginies, Christian ^[2] ; Marostica Junior, Mario Roberto ^[1] ; Dufour, Claire ^[2]

Affiliation

^[1] Univ Estadual Campinas, Sch Food Engn, LANUM, UNICAMP, Rua Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

^[2] Avignon Univ, UMR408, INRAE, SQPOV, F-84000 Avignon - France

• Document type: Journal article
• Source: Food Chemistry; v. 359, OCT 15 2021.
• Web of Science Citations: 0

Abstract

Ultrasound-assisted and solvent extractions resulted in similar levels of hydrolyzable tannins (10.3-6.0 mg/g), anthocyanins (7.8-10.2 mg/g) and flavonols (0.24-0.32 mg/g) for dried Myrciaria jaboticaba peel (DJP). Ultrasound was efficient for the extraction of poorly soluble hydrolyzable tannins but affected the stability of anthocyanins and flavonols. UPLC-DAD-MSn allowed the identification of 44 hydrolyzable tannins as single and mixed hexosides bearing galloyl, HHDP and tergalloyl units. Twelve mixed HHDP-galloylgluconic acids and tergalloylated hexosides were newly discovered in this work. Acid hydrolysis of both ultrasonic extract and DJP yielded five major compounds, i.e. gallic acid, ellagic acid, gallic acid-C-hexoside, valoneic acid dilactone and sanguisorbic acid dilactone and pointed to higher contents in hydrolyzable tannins than by summing individual polyphenols after UPLC. Last, cyanidin-3-O-glucoside and hydrolyzable tannins from the ultrasonic extract inhibited lipid peroxidation of a Western type meal in in vitro digestion, suggesting a health benefit for these jabuticaba polyphenols. (AU)

• FAPESP's process: 15/50333-1 - COBRA: a novel compound discovery pipeline for rapid and cost-effective identification of bioactives with health beneficial effects in Brazilian crops
• Grantee: Glaucia Maria Pastore
• Support Opportunities: Research Projects - Thematic Grants