Microbiological and sensory characteristics of mould-ripened salami under different packaging conditions / Romina Soledad Canel, Sofìa Guerrissi, Mariana Sanchez, Gabriela Mónaco, Federico Laich, Jorge Ricardo Wagner, Viviana Renaud, Vanesa Ludemann.
Sažetak

The preservation of mould-ripened salami was investigated during 48 days at 19-20 °C under different packaging conditions: (i) high barrier film filled with air, 100 % N2 or under vacuum, (ii) biaxially oriented polypropylene film, (iii) microperforated polyethylene film and (iv) unpackaged. Sensory, texture profile, physicochemical and microbiological analyses were performed. Fungal quantification revealed two data groups. In group 1 (consisting of salami in microperforated polyethylene film, biaxially oriented polypropylene film and unpackaged) the conidium viability was relatively constant. In group 2 (salami preserved in high barrier film filled with air, 100 % N2 or under vacuum) the conidium viability decreased due to the absence of oxygen and the high carbon dioxide volume fraction. SEM micrographs showed micromorphological changes in fungal structure; microperforated polyethylene film, biaxially oriented polypropylene film and unpackaged conditions preserved the conidial morphology, while high barrier film filled with air, 100 % N2 or vacuum conditions collapsed the hyphae and most of the conidia. Salami packed in microperforated polyethylene film and biaxially oriented polypropylene film showed the most acceptable organoleptic characteristics and lower hardness and chewiness values after packaging.; U radu je ispitana trajnost kobasica s plemenitom plijesni tijekom 48 dana pri temperaturi od 19 do 20 °C u različitim tipovima pakiranja: (i) filmu izraženih barijernih svojstava punjenom zrakom, 100 %-tnim dušikom ili vakuumom, (ij) biaksijalno orijentiranom polipropilenskom filmu, (iii) mikroperforiranom polietilenskom filmu, te (iv) bez pakiranja. Provedena je analiza senzorskih, fizikalno-kemijskih, mikrobioloških i teksturnih svojstava kobasica. Nakon određivanja broja kolonija plijesni uzorci su kobasica podijeljeni u dvije skupine. U jednoj je skupini (koju čine kobasice pakirane u mikroperforiranom polietilenskom filmu, biaksijalno orijentiranom polipropilenskom filmu i nepakirane kobasice) preživljavanje konidija bilo relativno nepromijenjeno. U drugoj se skupini (kobasice u filmu izraženih barijernih svojstava punjenom zrakom, 100 %-tnim dušikom ili vakuumom) preživljavanje konidija smanjilo zbog nedostatka kisika i visokog volumnog udjela ugljičnog dioksida.