Structural characterization, antioxidant and antibacterial activities of a novel water soluble polysaccharide fromCordia myxafruits

In this study, water-soluble polysaccharide and fatty acids ofCordia myxafruit harvested from the southwest of Iran were isolated and investigated. The extraction yield of water-soluble polysaccharide ofC. myxafruit (WSPCM) was 24.12%, and its experimental purity was 79.43%. The High Performance Liquid Chromatography results indicated that the WSPCM consisted of glucose, fructose, sucrose, maltose, ribose, maltitol, and maltoheptaose. The atomic absorption spectrometer analysis indicated that WSPCM was a rich source of Ca and Na. The dynamic light scattering results illustrated that the average particle size and zeta potential were 1510.7 nm and - 64.96, respectively. Fourier transform infrared spectroscopy revealed the presence of alpha and beta-configurations in WSPCM. The total unsaturated and saturated fatty acids were 60.62% and 39.38%, respectively and oleic, palmitic, and linoleic were the main fatty acids. The WSPCM represented good antibacterial activities against both Gram-positive and Gram-negative pathogenic bacteria. Moreover, it showed a relatively good antioxidant activity. In conclusion, WSPCM could be introduced as a novel natural antioxidant and antibacterial substance in functional food.