Stable Agar by Gamma Irradiation


DRY agar slowly deteriorates1 during storage, probably because of the degradation partly inherent in it and because of impurities which have not yet been identified, but processing stages designed to reduce sulphate2 and nitrogen seem to increase its stability. Until recently it has been the practice to extract agar from seaweeds immediately after collection. Recent experiments carried out in this institute to determine the effect of gamma radiation on dry seaweeds have led to some interesting observations which are reported here.

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  1. 1

    Tanii, K., Bull. Tohoku Reg. Fish Res. Lab., 2, 134 (1953); Chem. Abstr., 49, 9194 (1955).

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  2. 2

    Chakrabarty, D., Quart. J. Pharm. Pharmacol., 21, 159 (1948).

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  3. 3

    Doshi, Y. A., and Rao, P. S., Ind. J. Chem. (in the press).

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DOSHI, Y., RAO, P. Stable Agar by Gamma Irradiation. Nature 216, 931–932 (1967).

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