Process optimization and antioxidative activity of polyphenols derived from different seaweed species , , and .

The aim of this study was to extract the polyphenols from three major seaweed species such as , and which are found in the coastal province (Guangdong), a longest coastal line in China. It was found that the produced more polyphenols (34.99 mg) as compared to (23.26 mg) and (25.34 mg), respectively. The orthogonal method was used for the extraction of phenolic compounds and extraction condition of each seaweed species was optimized. The antioxidant activity of extracted polyphenols from all three species stated that the polyphenols extracted from demonstrated the highest antioxidative activity. Furthermore, gas chromatography-mass spectrometry (GC-MS) was used for qualitative analysis of polyphenols, which revealed that the major components of polyphenols extracted from were gallic acid and arbutin followed by syringate in and phloretin .