But agar’s superior qualities come with complex chemistry. “To speak of agar as a single substance of certain (if known) chemical structure is probably a mistake,” wrote phycologist Harold Humm in a 1947 article. According to the Food and Agriculture Organization of the United Nations, agar is merely recognized as “a hydrophilic colloid extracted from certain seaweeds of the Rhodophyceae class.” In terms of its actual composition, agar is mostly a combination of two polysaccharides, agaropectin and agarose, which themselves are complex and poorly-characterized polysaccharides made mostly (but not exclusively) from the simple sugar galactose.8
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演說開場,特朗普宣稱自己上任時面臨的是前任民主黨政府留下的「可怕經濟」,但在重返白宮第一年主導「多年來最偉大的逆轉」(turnaround for the ages),經濟在「前所未有地轟鳴」。他又強調美國股市上漲、抵押貸款利率降至近四年最低、牛肉與雞蛋價格顯著下跌,並聲稱12個月內吸引超過18兆(萬億)美元全球投資湧入。
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최현석 레스토랑 “노출 의상 자제해달라”…얼마나 심했길래