Characteristics and Antioxidant Activity of Fucoidan from Sargassum hystrix: Effect of Extraction Method

Table 1

The extraction methods on fucoidan yield, total sugar, xylose, fucose, and sulfate contents derived from S. hystrix.

Extraction methods	Yield	Total sugar (%)	Xylose (%)	Fucose (%)	Sulfate (%)
A	^a	^a	^a	^a	^c
B	^bc	^b	^a	^b	^c
C	^c	^a	^a	^a	^b
D	^b	^a	^a	^a	^b
Cf	—	^a	^a	^a	^a

Note: A (0.1 N HCl, room temperature, 24 h), B (2% CaCl₂, 85°C, 4 h), C (85% ethanol, room temperature, 12 h), D (0.5% EDTA, 70°C, 3 h), and Cf (commercial fucoidan). ^a-cThe same letter in the same column shows an insignificant difference ().