Portal de Periódicos da CAPES

Preparation of the different derivatives of the low-molecular-weight porphyran from Porphyra haitanensis and their antioxidant activities in vitro

2009; Elsevier BV; Volume: 45; Issue: 1 Linguagem: Inglês

10.1016/j.ijbiomac.2009.03.009

1879-0003

Zhongshan Zhang, Quanbin Zhang, Jing Wang, Hong Zhang, Xizhen Niu, Pengcheng Li,

Algal biology and biofuel production

Porphyran extracted from Porphyra haitanensis is a sulfated polysaccharide, which possesses excellent antioxidant activities. In this study, we prepared one low-molecular-weight porphyran and its sulfated, acetylated, phosphorylated and benzoylated derivatives. Their antioxidant activities were investigated including scavenging effect of superoxide, hydroxyl and 1,1-diphenyl-2-picrylhydrazyl radicals. The results of chemical analysis and FT-IR spectrums showed the modification was successful. And in addition, we found that certain derivative exhibited stronger antioxidant activity than low-molecular-weight porphyran. The benzoylated derivative showed the most excellent antioxidant activity in three assays, so this derivative needs to be attended to.