Studies on blackening of canned prawns. Pt. 1. Influence of copper and iron on product blackening
1969
Nandakumaran, M. | Chaudhuri, D.R. | Pillai, V.K.
A linear relationship was observed between the coppercontent and intensity of blackening in commercially canned prawn meat. Average copper and iron contents of non-blackened canned prawn meat were 9.6 and 32.5 ppm on dry weight basis respectively. In the blackened product copper content ranged from 15.8 to 63.9 ppm and iron content between 43.7 and 71.45 ppm depending on the intensity of blackening. But incorporation of copper in the above range to experimental cans produced blackening while iron up to 250 ppm did not impart any blackening under standard conditions of canning.
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