61 research outputs found
Effect of High Pressure Homogenization Process on Bacillus Stearothermophilus and Clostridium Sporogenes Spores in Skim Milk
AbstractHigh pressure homogenization (HPH) is an alternative food processing technique. As product heating is minimum, its characteristics are not affected in a large extend. This characteristic makes the HPH an interesting process to guarantee the safety of thermo-labile food. Inactivation of Bacillus stearothermophilus ATCC 7953 and Clostridium sporogenes PA 3679 spores in skim milk by HPH was studied. Results showed that pressures up to 300 MPa were not able to cause any reduction on spore counts or promote changes on its thermal resistance. The application of heat shock (100°C/15 min) before HPH treatment and the homogenization process realized at mild inlet temperature (45°C) – which results in homogenization temperature of around 84°C at 300 MPa - also did not cause reduction on viable spores counts. A few spores reduction (0.67 logarithmic cycles) were only observed when the milk samples were subjected to homogenization treatment 16 times (multiple passes) at 300 MPa. Therefore, although HPH be recognized as an effective method for milk pasteurization, it was conclude that the HPH process is not able to guarantee the commercial sterility of milk, being necessary the association of the homogenization with another preservative method, as refrigeration
Índice de seleção e estimativa de parâmetros genéticos e fenotípicos para características relacionadas com a produção de milho-verde
Consequências da remoção do limbo foliar em diferentes estádios reprodutivos da cultura do milho em duas épocas de semeadura
Cultivo hidropônico de plântulas de sorgo sob estresse salino com sementes envelhecidas artificialmente e osmocondicionadas
Condicionamento, qualidade de sementes e sincronismo do florescimento em campo de produção de sementes do milho híbrido GNZ 2004
Manejo do solo e do nitrogênio em milho cultivado em espaçamentos reduzido e tradicional
Espaçamento entre fileiras e densidade de semeadura do sorgo forrageiro para a região norte de Minas Gerais
Magmatismo cálcio-alcalino Calimiano no embasamento do Terreno Jauru (Província Rondoniana - San Ignácio), Cráton Amazônico: geoquímica e geocronologia Sm-Nd E U/Pb
Adaptabilidade e estabilidade de populações de milho-pipoca relacionadas por ciclos de seleção
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