Amylase-assisted extraction and antioxidant activity of polysaccharides from Gracilaria lemaneiformis

作者：Wu, Shengjun; Lu, Mingsheng; Wang, Shujun^*

来源：3 Biotech, 2017, 7(1): 38.

DOI：10.1007/s13205-017-0697-6

• Gracilaria lemaneiformis
• Polysaccharides
• Antioxidant activity
• Thermostable alpha-amylase

Gracilaria lemaneiformis (G. lemaneiformis) is rich in polysaccharides that have many functional activities. In this study, the thermostable alpha-amylase-assisted extraction and antioxidant activity of water-soluble polysaccharides from G. lemaneiformis were investigated. The extraction conditions were optimized as follows: time, 40 min; temperature, 95 degrees C; pH, 5 and enzyme amount, 6000 U/g, under which the yield of G. lemaneiformis polysaccharides (GPs) reached 49.15% dry base. The GPs were characterized by monosaccharide composition, FTIR spectrum, UV spectrum and antioxidant activities. The results indicate that the GPs had strong hydroxyl radical activity at a concentration of 100 mu g/mL and could be used as potential antioxidants.

• 出版日期2017-4-24
• 单位淮海工学院