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Optimization of bleaching conditions for sardine oil

机译:沙丁鱼油漂白条件的优化

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This work studies the influence of the operational conditions (temperature: 90-130℃, activated clay amount: 1-5 wt% and contact time: 20-60 min) on the bleaching process of degummed and neutralized sardine oil. The bleached oils were evaluated for free fatty acids, peroxide value, p-anisidine value, totox, oxidation stability (Rancimat) and color (CIELAB coordinates). Such measured variables were statistically modeled by full factorial experimental design and response surface methodology. An individual optimum value for totox of 21.38 (which minimizes oxidation products content) was obtained at 130℃, 5 wt% of clay amount and 60 min. Regarding the color quality, it was found a maximum value for hue-angle (89.19 at 99.2℃, 5 wt% of clay and 56. 6 min) and a minimum value for chroma (81.76 at 109.4℃, 5 wt% of clay and 49.4 min). The conflicting effect of temperature and time on the location of the individual optima motivated the generation of a Pareto front (set ofnon inferior solutions) employing the weighted-sum multi-objective optimization technique.
机译:这项工作研究了操作条件(温度:90-130℃,活性粘土含量:1-5 wt%,接触时间:20-60分钟)对脱胶和中和的沙丁鱼油漂白过程的影响。评估了漂白油的游离脂肪酸,过氧化物值,对茴香胺值,毒素,氧化稳定性(Rancimat)和颜色(CIELAB坐标)。这些测量变量通过全因子实验设计和响应面方法进行统计学建模。在130℃,粘土含量的5 wt%和60分钟的条件下,毒物的最佳最佳值为21.38(可将氧化产物的含量降至最低)。关于颜色质量,发现色相角的最大值(99.2℃下为89.19,粘土为5 wt%,56。6 min),色度的最小值(109.4℃下为81.76,粘土为5wt%,且色度49.4分钟)。温度和时间对各个最优位置的冲突影响促使采用加权和多目标优化技术生成Pareto前沿(一组非劣解)。

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