Physical, chemical and microbiological characterization of deboned dry-cured ham with added lactulose

Ítalo Abreu Lima Hewerton Barbosa Gomes Alcinéia de Lemos Souza Ramos Roberta Hilsdorf Piccoli Eduardo Mendes Ramos About the authors

Summary

The objective was to develop and characterize technologically and microbiologically a boneless dry-cured ham containing lactulose as a prebiotic. The dry-cured hams were processed using transglutaminase as the binder and glucono-delta-lactone as the acidifying agent, evaluating one control formulation and another with the addition of 2% lactulose (LAC). Both products obtained complied with the physical, chemical and microbiological standards set by the Brazilian legislation for dry-cured hams. The mass losses during the drying stage were higher (P < 0.05) for the products containing added lactulose than for the control. No significant differences were found (P > 0.05) between treatments for the evaluated parameters during processing, with the moisture content, water activity (aw) and residual nitrite reducing ( P< 0.05), and the acidity, lactic acid bacteria and TBARS values increasing (P < 0.05) during the ripening stage. The finished products showed pH (5.55 ± 0.37) and aw (0.90 ± 0.01) values consistent with dried cured products, with no differences (P > 0.05) between treatments for the proximate composition and colour of the products. The lactulose content of the LAC product was 1.44 ± 0.37%, indicating the feasibility of using this prebiotic in the preparation of boneless dry-cured hams in order to obtain products with a functional property claim.

Keywords:
Prebiotic; Dry-cured product; Ripening; Colour

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