What is the commercial use of red algae?

What is the commercial use of red algae?
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What is the commercial use of red algae?
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Name the gelatin-like substance which is prepared fro various species of red algae growing in Asiatic waters. The prepared product appears in the form of cakes, coarse granules, long shreds or in thin sheets. It is used extensively alone or in combination with various nutritive substances, as a medium for culturing bacteria and various fungi

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Last Answer : ANSWER: Agar-agar or just Agar