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The effect of organic acid and sodium chloride dips on the shelf-life of refrigerated Irish brown crab (Cancer pagurus) meat

McDermott, A., Whyte, P., Brunton, N., Lyng, J., Fagan, J., Bolton, D.J.
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2018 v.98 pp. 141-147
Cancer pagurus, Enterobacteriaceae, Pseudomonas, acetic acid, chemical treatment, citric acid, crab meat, crabs, food spoilage, lactic acid, lactic acid bacteria, mesophilic microorganisms, shelf life, sodium chloride
Crab (Cancer pagurus) meat (white and brown) has a short shelf-life. Chemical treatments may inhibit microbial spoilage and extend shelf-life. The effect of 5% organic acids (lactic acid (LA), acetic acid (AA) and citric acid (CA)) and 5% sodium chloride (NaCl) on TVC (mesophiles and psychrophiles), Enterobacteriaceae, Pseudomonas spp. and lactic acid bacteria (LAB) were investigated during storage (2 °C for 12 days). AA was the most effective treatment for white meat, reducing the initial TVCm and TVCp by 1.6 and 1.8 log10 cfu/g, respectively, and extended the shelf life to 8–11.5 days, compared to 5 days for untreated control samples. LA treatment also significantly (P < 0.05) reduced the initial TVC, but the shelf life was only increased by 3 days. CA and NaCl treatments had no significant effect (P > 0.05). A similar pattern was observed for brown meat samples, although the shelf life was increased by a maximum of 1–3 days. The growth of Enterobacteriaceae, Pseudomonas spp. and LAB was significantly (P < 0.05) reduced on AA treated samples only. It was concluded that the shelf-life of crab meat may be extended by up to 3 days using lactic acid and more than doubled using acetic acid.