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: Sensory and Texture Profile Analysis (TPA) were used to evaluate the effects of 8 fat substitutes/binders on the quality of low‐fat frankfurters (10% fat) compared to both high‐fat (22%) products and low‐fat products without fat substitutes. Products with isolated soy protein (ISP), modified waxy maize starch, and isolated muscle protein (IMP) had similar sensory and texture properties to the high‐fat products, but the products with ISP and IMP had higher purge loss. Sensory and TPA properties were highly correlated: overall palatability was strongly associated with TPA first bite energy (r = 0.84) and fracturability (r = 0.800). Principal component analysis of the data showed that most of the variation in properties of the products was due to variation in firmness and cohesiveness (83.6%) of the sensory properties and stress‐related parameters from the force‐deformation curves for TPA (77.6%).

In São Paulo, Brazil, the first case of coronavirus disease 2019 (CoViD-19) was confirmed on 26 February, the first death due to CoViD-19 was registered on 16 March, and on 24 March, São Paulo implemented the isolation of persons in non-essential activities. A mathematical model was formulated based on non-linear ordinary differential equations considering young (60 years old or less) and elder (60 years old or more) subpopulations, aiming to describe the introduction and dissemination of the new coronavirus in São Paulo. This deterministic model used the data collected from São Paulo to estimate the model parameters, obtaining R0 = 6.8 for the basic reproduction number. The model also allowed to estimate that 50% of the population of São Paulo was in isolation, which permitted to describe the current epidemiological status. The goal of isolation implemented in São Paulo to control the rapid increase of the new coronavirus epidemic was partially succeeded, concluding that if isolation of at least 80% of the population had been implemented, the collapse in the health care system could be avoided. Nevertheless, the isolated persons must be released one day. Based on this model, we studied the potential epidemiological scenarios of release by varying the proportions of the release of young and elder persons. We also evaluated three different strategies of release: All isolated persons are released simultaneously, two and three releases divided in equal proportions. The better scenarios occurred when young persons are released, but maintaining elder persons isolated for a while. When compared with the epidemic without isolation, all strategies of release did not attain the goal of reducing substantially the number of hospitalisations due to severe CoViD-19. Hence, we concluded that the best decision must be postponing the beginning of the release.