https://doi.org/10.17113/ftb.57.03.19.6197

    


The Influence of Meat Batter Composition and Sausage Diameter on Microbiota and Sensory Traits of Artisanal Wild Boar Meat Sausages


Ivica Kos^1§, Ana Zgomba Maksimović^2§, Marija Zunabović-Pichler³, Sigrid Mayrhofer³, Konrad J. Domig³ and Mirna Mrkonjić Fuka²*


¹Department of Animal Science and Technology, University of Zagreb Faculty of Agriculture, Svetošimunska 25, 10000 Zagreb, Croatia
²Department of Microbiology, University of Zagreb Faculty of Agriculture, Svetošimunska 25, 10000 Zagreb, Croatia
³Department of Food Science and Technology, BOKU University of Natural Resources and Life Sciences Vienna, Muthgasse 18, 1190 Vienna, Austria

Article history:
Received: 10 January 2018
Accepted: 8 July 2019





Key words:
wild boar sausages, sausage diameter, sensory evaluation, lactic acid bacteria, Leuconostoc mesenteroides, starter culture selection




Summary:
In this study, the influence of meat batter composition and sausage diameter on the development of microbiota and sensory traits of traditional, spontaneously fermented wild boar meat sausages are evaluated. This research also demonstrates how principal component analysis (PCA) can be used to relate product sensory properties to particular microbial genotype and to select potential starter or adjunct culture. Generally, similar microbiological results were obtained in all types of products. The undesirable microbiota was either not detected at any sausage production stage or its number decreased below the detection limit in ripened sausages. The low growth rate of lactic acid bacteria (LAB) was consistent with the obtained pH and slow acidification rate. Although no differences in the composition of LAB species were noticed between sausage types (50S=50 % wild boar meat in small casing, 50L=50 % wild boar meat in large casing, 100S=100 % wild boar meat in small casing), a clear separation based on LAB genotypes could be observed. Upon quantitative descriptive analysis, significant differences in sensory attributes between sausage types were established. According to the PCA, the overall acceptability traits of sausages are closely linked to one Leuconostoc mesenteroides genotype (LM_4). Of all tested technological properties, LM_4 strains showed remarkable acidification ability, lowering the pH from pH=5.41 to 3.74, and pronounced proteolytic activity on skimmed milk as well as antagonistic activity against Staphylococcus aureus (DSM 20231) and Brochothrix thermosphacta (LMG 17208). Lipolytic and haemolytic activities were not detected, and all analyzed strains were susceptible to tested antibiotics and possessed no biogenic amine genes.

*Corresponding author:    +38512394034
                                               mfuka@agr.hr

^§These authors contributed equally to this work