不同鲍鱼原料在热加工中的品质变化及条件优化
Quality changes and optimization of different abalones during heat processing
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摘要: 实验研究了4种鲍鱼样品在高温处理后的品质变化,优化热加工工艺。以鲜活鲍鱼、冻鲜鲍鱼、鲜煮鲍鱼和冻煮鲍鱼为原料,研究100~130℃加热温度下,样品的蒸煮损失、色泽和弹性随时间的变化及规律。结果表明:在相同加热时间内,蒸煮损失随着温度的升高而增大;而同一加热温度下,在初期损失较快,到后期开始趋于平稳,其中鲜煮鲍鱼的蒸煮损失最小,冻煮鲍鱼次之。加热温度越高,时间越长,肉色的变化越大(ΔE),而冻鲜鲍鱼的色泽变化最为显著。弹性随加热时间呈现先增后减的趋势,除了冻鲜鲍鱼在110℃加热30 min时弹性最大,其余3种鲍鱼的最佳加热条件是100℃,30 min。总体而言,鲍鱼在热加工过程中,应避免温度过高和时间过长,在选择加工原料时,鲜煮和冻煮鲍鱼加工后的品质显著优于鲜活和冻鲜鲍鱼。Abstract: The quality changes of four kinds of abalone sample during high temperature treatment was studied, and processing technic was optimized. Abalones were heated at 100, 110, 120, 130 ℃ for different time intervals and cooking loss, color, elasticity were tested to investigate the quality change rules.The results showed cooking loss increased with the temperature and time rising.The cooking loss of cooked abalone was the smallest and the next was frozen cooked abalone. The color difference ( ΔE) also tended to increase with temperature and time and the color change of the frozen fresh abalone was most significant.The trend of elasticity first increased and then decreased with increasing time, abalones got the best elasticity when heated under 100 ℃ for 30 min, except frozen abalone.In general, during heat processing, temperature and time couldn't be too high and too long.What's more, the quality of cooked abalone and frozen cooked abalone after processing was much better than fresh or frozen abalone.