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The consumption of freshwater fish and fish products has gradually grown worldwide over the last decades, generating a proportional waste increase. The objective of the present study was to assess the chemical and bacteriological quality of restructured fish product, meatball-type, pre- pared with rainbow trout (Onchorynchus mykiss) waste added of 1% transglutaminase (MTG), 4% textured soy protein (TSP) and replacing part of the sodium chloride with potassium chloride (75%/25%) as described below: T1—starch addition (control); T2—MTG addition (1%); T3—soy protein addition (4%); T4—soy protein addition (4%) and MTG addition (1%); T5—soy protein addition (4%), MTG addition (1%) and partial replacement of salt (75% NaCl/25% KCl). Total aerobic mesophilic bacteria (TAMB), 2-thiobarbituric acid reactive substances (TBARS), pH de- termination and quantification of biogenic amines were performed on the day after manufactur- ing (P0) and after 60 days of storage (P1) at −25˚C ± 2˚C. The results showed that there was no sig- nificant difference (p < 0.05) of microbiological quality, TBARS and pH after storage. T4 presented the lowest total biogenic amine content (256.84 mg/kg) whereas T3 and T5 had the highest value (791.36 and 707.19 mg/kg, respectively) in this parameter. Putrescine was the biogenic amine that presented the highest concentration (504.00 mg/kg) in T3 and cadaverine that presented the smallest concentration (0.36 mg/kg) in T4. The use of technological strategies for developing new products with non-commercial fillets kept the most standards, having changes only in some bio- genic amines. * Corresponding author.

food and nutrition sciences

Quality of Semi-Prepared Products from Rainbow Trout Waste (&amp;lt;i&amp;gt;Onchorynchus mykiss&amp;lt;/i&amp;gt;) by Using Different Technological Strategics