Ceramide (CER) is a novel food-grade organogelator with beneficial health effects. Lecithin (LEC) is not an effective gelator, however, it may alter the crystal morphology of the host gelator in...
In the presence of a small amount of water, CER and LEC were self-assembled to form oleogels in sunflower oil. This can be used to produce hard-stock fat replacers as well as for incorporating water-soluble nutrients into oil-based products.
Tilapia fillets were dried with combined method of heat pump drying followed by microwave drying in heat pump drying temperature (30, 35 and 40°C), moisture content at the transition point of drying stages (30, 40 and 50%), and microwave drying power (119, 252 and 385 W). The regression model for the comprehensive weighted scores of the drying energy consumption and the product rehydration rate at various weights as a function of heat pump drying temperature, moisture content at the transition point of drying stages, and microwave drying power and its corresponding optimized process parameters were obtained. The analysis of process parameter data optimized at different weight levels of the drying energy consumption and the product rehydration rate indicates that, when the ratio of weight of the drying energy consumption over weight of the product rehydration rate increases, the optimized value of the heat pump drying temperature rises slightly but the rise is insignificant, whereas the optimized value of the moisture content at the transition point of the combined drying processes and that of microwave drying power increase.
A mixture of ceramide (CER) and lecithin (LEC) at specific ratios was capable of forming oleogels in sunflower oil triggered by adding a trace amount of water.
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