Chemical composition and anti-hyperglycaemic effects of triterpenoid enriched Eugenia jambolana Lam. berry extract. (January 2017)

• Record Type: Journal Article
• Authors: Li, Yuanyuan; Xu, Jialin; Yuan, Chunhui; Ma, Hang; Liu, Tingting; Liu, Feifei; Seeram, Navindra P.; Mu, Yu; Huang, Xueshi; Li, Liya
• Is Part Of: Journal of functional foods. Volume 28(2017)
• Page Start: 1
• Page End: 10
• Publication Date: 2017-01
• Subjects: Eugenia jambolana -- Triterpenoid -- Anti-hyperglycaemic -- Chemical composition -- Animal study; Functional foods -- Analysis -- Periodicals; Food -- Biotechnology -- Periodicals; Nutrition -- Periodicals; 613.2
• DOI: 10.1016/j.jff.2016.10.021
• Languages: English
• ISSNs: 1756-4646

Abstract

Highlights: Triterpenoid-enriched Jamun fruit extracts (TJFE) reduce hyperglycaemia. TJFE enhance mouse glucose tolerance. TJFE inhibit hepatic gluconeogenesis in mice. TJFE improve Akt phosphorylation and Glut4 protein levels in skeletal muscle. TJFE suppress the gluconeogenic gene expression of Pgc1α, Pepck, and G6Pase. Abstract: In our investigation of the anti- hyperglycaemic constituents of Eugenia jambolana L. (Jamun), one new triterpenoid, 2- O - cis - p -coumaroyl maslinic acid, along with thirteen known triterpenoids were isolated from the fruit ethyl acetate extract. The structures of compounds1 –14 were elucidated on the basis of mass spectrometry and nuclear magnetic resonance analyses. Animal studies demonstrated that the triterpenoid-enriched Jamun fruit extract (TJFE) decreased blood glucose content in C57BL/6 mice (P < 0.05) upon sucrose loading challenge, improved the glucose tolerance in mice administrated with TJFE for 2 weeks via oral gavage (100 mg/kg body weight), and increased Akt phosphorylation levels and Glut4 protein levels in skeletal muscle. Additionally, TJFE administration inhibited hepatic gluconeogenesis through suppressing the gluconeogenic gene expression of Pgc1α, Pepck, and G6Pase. The current study advances scientific knowledge of Jamun constituents and suggests that triterpenoids may play an important role in the anti-diabetic properties attributed to this edible purple berry.