THE EFFECTIVENESS OF CHLORTETRACYCLINE AND OXYTETRACYCLINE ABOVE 5-PPM LEVEL IN KEEPING QUALITY OF GROUND FLESH

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  • 5 ppm 以上のクロルテトラサイクリンおよびオキシテトラサイクリンの保鮮効果に関する研究
  • 5ppm イジョウ ノ クロルテトラサイクリン オヨビ オキシテトラサイクリン ノ ホセンコウカ ニ カンスル ケンキュウ

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Abstract

The previous paper1) revealed that the preservative effect of CTC was increased more than that of OTC when the concentration was increased from 2 to 6ppm. AYRES et al2). and LERKE and FARBER3) reported that the effectiveness of OTC approached to that of CTC at 25 to 30ppm level. The present study was undertaken in order to explain this apparent discrepancy.<br> Data herein presented showed clearly that the rate of increase in the effectiveness of CTC was decreased with the increase in concentration from 5 to 30ppm as contrasted to that of OTC (Table 4) and that the ratio of the effectiveness of CTC to that of OTC was decreased with increasing their concentrations (Fig. 2). It was noted that until the incipient spoilage the CTC residue was sharply decreased to lower than a 10% level of the initial concentration whereas the OTC residue decreased only to a 80% level (Table 5).

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