70 research outputs found
Internal quality of commercial eggs stored under conditions that simulate storage from laying to consumption
This study evaluated the effects on the internal quality of eggs of various storage environments through which eggs may pass between being laid and being consumed. Commercial eggs (N = 648) from Dekalb White hens were used. Treatments consisted of T1: 28 days at 4 °C; T2: 28 days at 20 °C; T3: 7 days at room temperature (27 °C ± 2 °C) (humidity 55%) and 21 days at 4 °C; T4: 7 days at room temperature and 21 days at 20 °C; T5: 14 days at room temperature and 14 days at 4 °C; T6: 14 days at room temperature and 14 days at 20 °C; T7: 21 days at room temperature and 7 days at 4 °C; T8: 21 days at room temperature and 7 days at 20 °C; and T9: 28 days at room temperature. The characteristics that were evaluated consisted of Haugh unit (HU), yolk index (YI), colour (L*, a* and b*), albumen pH, yolk pH and lipid oxidation. Eggs stored 28 days were darker (L*), and had greater yolk pH and lipid oxidation than fresh eggs. Eggs stored under T1 and T3 conditions had greater HU and YI than eggs stored in the other environments. The albumin pH of eggs stored at room temperature (T9) was highest of the treatments. Yellowness was increased in eggs stored under T4, T6, T8, and T9 conditions. Eggs should be stored under refrigeration as this promotes maintenance of internal quality and mitigates negative effects of previous storage conditions
Qualidade como função de tecnologia industrial básica e a inserção competitiva do Brasil no comércio internacional
Water quality of the reservoirs used for irrigation in São José dos Pinhais, Paraná State, Brazil
Spatial variability of physical and chemical attributes of some forest soils in southeastern of Brazil
Methodology adjustments for organic acid tolerance studies in oat under hydroponic systems
Análise de trilha de componentes de produção primários e secundários em tomateiro do grupo Salada
WATER REQUIREMENT ESTIMATE FOR THE REPRODUCTIVE PERIOD OF MANGO ORCHADS IN THE NORTHEAST OF THE STATE OF PARÁ, BRAZIL
Inseminação artificial em tempo fixo e diagnóstico precoce de gestação em vacas leiteiras mestiças
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