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The physicochemical analyses and quantification of lactic acid bacteria of cheeses made from autochthonous lactic cultures were evaluated during ripening. There was a decrease in water activity, pH and moisture, and an increase in acidity, total solids, proteolysis, lipids, fat in dry matter and ash. The major fatty acids identified were palmitic, oleic, stearic and myristic acid. Lactobacillus bulgaricus and Streptococcus thermophilus presented a higher count at the beginning of ripening. The color, cohesiveness, springiness and chewiness parameters were affected by the chemical properties, which was not observed for hardness and shear force.

Cheese ripeness is an important step of cheese manufacturing that provides a kind of food with complex sensory characteristics and nuanced differences. The importance of generating rapid/easy consumer perception of a new product is without question. The aim was to evaluate the Santo Giorno cheese sensory profile, at different ripening times and with different starter cultures, evaluated by trained assessors and consumers using CATA questions. The two methods generated similar results. However, the results from CATA revealed that consumers are able to discriminate between cheeses with different ripening times but not describe them in detail. The application of the technique also made it possible to perceive that the two starter cultures used did not reflect different sensory elements and that the spicy and salty attributes are more easily perceived by consumers when evaluating ripened cheeses.

Devido aos riscos de contaminação por micotoxinas, o controle fúngico em alimentos deve ser adotar medidas desde o início do desenvolvimento microbiano. A substituição de fungicidas químicos por ácidos orgânicos (geralmente reconhecidos como seguro) desponta como uma perspectiva interessante. A pesquisa teve como objetivo determinar concentração inibitória mínima (CIM) de ácidos orgânicos, sorbato de potássio e respectivas combinações no controle de Aspergillus flavus NRRL 3251 produtor de aflatoxina B1. O inóculo de 104 esporos.mL-1 foi calculado baseado na contaminação real em milho e ração animal. As melhores CIM in vitro foram: combinação de ácido acético (AA 83,26 mM) + propiônico (AP 6,74 mM); AA (8,32 mM) + sorbato de potássio (SP 13,31mM) e AP (6,74 mM) + SP (33,28 mM). Considerando a dose comercialmente utilizada de ácido propiônico 0,5%, a combinação do ácido propiônico com sorbato de potássio e ácido acético poderia reduzir respectivamente cerca de 24,63 e 70,19% o custo em conservante.

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