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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

Author:
McDermott, A., Whyte, P., Brunton, N., Lyng, J., Fagan, J., Bolton, D.J.
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2018 v.98 pp. 141-147
ISSN:
0023-6438
Subject:
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
Abstract:
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.
Agid:
6114107