Advances in structural modification of fucoidans, ulvans, and carrageenans to improve their biological functions for potential therapeutic application.

Marine sulfated polysaccharides constitute a class of bioactive polymers commonly found in cell walls of macroalgae. Among these macromolecular substances, fucoidans, ulvans, and carrageenans have attracted considerable attention providing interesting therapeutic properties affected by a combination of various structural factors, such as sulfation pattern, molecular weight, monosaccharide composition, and glycosidic linkages. Remarkably, chemical modification, enzymatic hydrolysis and crosslinking are promising approaches for developing the application of these polysaccharides through enhancement and/or addition of new biological properties.

Antioxidants from leaves: LC-MS/MS chemical profiling, in vitro antiglycation, α-glucosidase and α-amylase inhibitory activities.

The present study evaluated a range of biological activities of leaves, often considered as by-products, in relation to hyperglycemia. The antiglycation potential of this plant has not been previously reported. In this research, the methanolic leaf extract of was assessed for its antioxidant, enzyme inhibitory and antiglycation activities.

Phytochemical profile and antioxidant capacity, α-amylase and α-glucosidase inhibitory activities of Oxalis pes-caprae extracts in alloxan-induced diabetic mice.

Diabetes and its complications are closely correlated with chronic hyperglycemia, causing severe oxidative stress and leading to glycation reaction with formation of advanced glycation end products. However, medicinal plants are still a source of inspiration for the discovery of new treatments of several diseases, including diabetes. The present study was aimed to evaluate the antioxidant and antidiabetic properties of Oxalis pes-caprae flowers extract in alloxan-induced diabetic mice.