1962•OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)Requires access
PRESERVATION OF STRAWBERRIES BY Co$sup 60$ GAMMA-RADIATION
Gisuke Meshitsuka, Makoto Oka, Kazunori Yamazaki, Hisao MATSUBARA, Masae Tabei
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Abstract
Strawberries packed in shallow wooden cases were sealed in polyethylene bags and irradiated at room temperature by Co/sup 60/ gamma rays at dosages of 0, 5, 10, 20 and 40 x 10/sup 4/ r. Preservation tests were performed at 4 deg C for 45 days after irradiation. The deterioration of qualities by irradiation was not too serious and even at the high dosage up to 40 x 10/sup 4/ r, only a little decoloration of the fruit juice and slight softening of the texture was observed. A low dosage of 5 x 10/sup 4/ r was fairly effective in retarding the appearance of visible fungus growth. The polyethylene seal seemed to prevent a microbial post-infection. Possibilities of radiopreservation of strawberries at a comparatively low level dose are also discussed. (P.C.H.)