The Indian Blackberry (Jamun), Antioxidant Capacity, and Cancer Protection

Extraction of Bioactive Compounds from the Fruits of Jambolan (Syzygium cumini (L.)) Using Alternative Solvents

This work demonstrates the effectiveness of using alternative solvents to obtain jambolan extracts with a high content of bioactive compounds compared to conventional organic solvents, being the first study to evaluate the best ecological solvent alternative for Syzygium cumini (L.) Skeels. Five alternative solvents were used for extraction: water at 25 °C (W25), water at 50 °C (W50), water at 75 °C (W75), water with citric acid at 2.4% (CA2), and water with citric acid at 9.6% (CA9) in comparison with three conventional solvents: ethanol (EtOH), water with ethanol at 50% (WE), and water with methanol at 50% (WM). A protocol was then established for the extraction and concentration of samples obtained with these solvents. The highest content of total phenolic compounds (TPCs) in the extracts was obtained with the solvent W75 (1347.27 mg GAE/100 g), while in the concentrates it was the solvents EtOH (3823.03 mg GAE/100 g) and WM (4019.39 mg GAE/100 g). Total monomeric anthocyanins (TMAs) increased by 209.31% and 179.95% in extractions with CA2 and CA9, respectively, compared to pulp (35.57 mg eq c-3-g/100 g), demonstrating that they are the most efficient alternative solvents in this extraction. The levels of bioactive compounds and antioxidant activity varied according to the solvents used. Delphinidin 3,5-diglucoside, cyanidin 3,5-diglucoside, delphinidin 3-glucoside, petunidin 3,5-diglucoside, cyanidin 3-glucoside, peonidin 3,5-diglucoside, malvidin 3,5-diglucoside, petunidin 3-glucoside, and malvidin 3-glucoside were identified in most of the samples by UPLC-MS/MS. This study suggests that a simple procedure using alternative solvents can be used as an environmentally friendly strategy to achieve efficient extraction of bioactive compounds in jambolan.

Hypoglycemic activity of Syzygium cumini (L.) Skeels seed extracts: an approach to in vitro, in vivo, and in silico studies

This research is carried out to explore the hypoglycemic activity of Syzygium cumini seed extracts by in vitro, in vivo, and in silico methods. For in vitro studies the α-amylase and α-glucosidase enzyme inhibition assays were employed. For in vivo studies 30 alloxan induced Wistar rats were used. They were orally administered with glibenclamide and low/high dose of the extracts and were monitored regularly for the change in blood glucose levels for about 28 days. The in silico molecular docking was conducted to evaluate the binding interaction of 1,2,3-Benzenetriol with human pancreatic α-amylase and α-glucosidase. It was found that all the extracts were able to inhibit the α-amylase and α-glucosidase enzymes. Among which the acetone extract showed greater inhibition with 72.52 ± 0.51% and 63.02 ± 0.73% for both the enzymes, respectively. There was significant (p < 0.05) reduction in blood glucose levels in the rats administered with glibenclamide and extracts. In silico docking results revealed that the compound 1,2,3-Benzenetriol exhibited the highest binding affinity for human pancreatic α-amylase with binding energy -7.7 kcal/mol. Thus suggesting the utilization of S. cumini seeds in the management of diabetes mellitus.Communicated by Ramaswamy H. Sarma.

Bioactive compounds and pharmacological and food applications ofSyzygium cumini– a review

The present review explores the nutritional, phytochemical and pharmacological potential as well as diverse food usages ofSyzygium cumini.

Bioactive compounds and pharmacological and food applications ofSyzygium cumini– a review

The present review explores the nutritional, phytochemical and pharmacological potential as well as diverse food usages ofSyzygium cumini.

Optimization of the microwave-assisted extraction and antioxidant activities of anthocyanins from blackberry using a response surface methodology

Blackberry contains high amounts of anthocyanins, whose extraction method is closely related with anthocyanin content and antioxidant activity.