채집시기에 따른 제주연안 괭생이모자반의 화학성분 및 항산화 활성

Abstract

This study was to investigate the external morphological changes and chemical composition according to the seasons of Sargassum horneri (S. horneri) and to determine the total polyphenol content and antioxidant activity by different extraction solvents. The carbohydrate content of S. horneri was highest in June (59.36%) and crude protein content was highest in March (26.15%). Crude fat content was 1.08-2.85%, similar to that observed in other seaweeds. The yield of the extract was significantly higher in the hot water extract. The polysaccharide content of hot water extract was higher than that of ethanol extract, and the extract showed a different trend according to the collection time. Total polyphenol content, DPPH and ABTS radical scavenging activity were highest in May of 70% ethanol extract. FRAP value was not significantly different between hot water extract and 70% ethanol extract except June. As a result, it is recommended to collect in May during the collection period, which has a high number of individuals, high carbohydrate content and crude protein content, high total polyphenol content and antioxidant activity. Ethanol extraction yield was low, but the 70% ethanol extract, which had high total polyphenol content and high antioxidant activity, was considered as the most suitable solvent. Therefore, S. horneri has a great value as a functional food materials.