1) For the purpose of preparation of food and fodder yeasts from nonedible seaweed, two suitable Candida yeasts have been isolated from seaweed compost.
2) They had the ability of fermenting galactose, sucrose and glucose, and could not ferment maltose and mannit, but could assimilate mannit.
3) NaCl concentration from 1 to 2% had no remarkable effect on growth of yeast and the optimum pH was 4∼5.
4) In the acid hydrolyzate of brown seaweed (Ecklmlia cava Kjellman, Sargassum fulvellum AGARDH) an amorphous deposit was produced during storage after neutralization of media and its removal always delayed yeast growth, but addition of (NH₄)₂SO₄ and NaH₂PO₄ to media could increase the assimilation of reducing sugar and yeast yield.
5) Co^(50) gamma ray irradiation (dose rate : 1 Mrad/hr, BNL shipboard irradiator) of seaweed had not so much effect on the hydrolysis cf carbohydrates and nitrogen compounds in seaweed but could increase the yeast production from seaweed hydrolyzate.
6) The yeast yield was 7∼8 g of dry yeast per 100 g of seaweed by cultivation with jar fermentor.
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