The aim of this work was to quantify the recovery of juice and bioactive compounds of apple and carrot mashes treated by the electrotechnologies (PEF or OH) at different pre-heating temperatures (40, 60 or 80 °C), considering thermal and electric field based cell disintegration.

In general, a higher cell disintegration resulting from the applied pre-treatments also resulted in higher juice yield (around 10% increase for carrot and 5% for apple compared to untreated). Regarding the carotenoid content of obtained carrot juices, only the PEF pre-treatment at 20 °C resulted in an increased extractability. A release of total polyphenols from apples into the juice increased in all pre-treated samples compared to the control. This study suggests that a combined pre-treatment can further improve the cell disintegration and juice yield and may have the potential to increase the recovery of bioactive compounds depending on the treatment parameters.

Industrial relevance

Thermal treatment followed by PEF or conducted by OH can still improve the cell disintegration and yield of juice.

Moreover, the combination of thermal and electric field effects may also improve the recovery of bioactive compounds depending on the chosen treatment conditions. Therefore, the combined treatments show high potentiality for the application at industrial level to improve the release of the juice and at the same time to obtain novel products with high quality.

中文翻译：

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热和电场效应在脉冲电场（PEF）和欧姆加热（OH）预处理果蔬泥中的作用

这项工作的目的是在考虑到热和电场的情况下，量化在不同的预热温度（40、60或80°C）下通过电子技术（PEF或OH）处理过的苹果汁和胡萝卜泥的汁液和生物活性化合物的回收率基于细胞的崩解。

通常，由于进行了预处理而导致的更高的细胞崩解性也导致了更高的果汁产量（与未处理相比，胡萝卜增加了10％，苹果增加了5％）。关于获得的胡萝卜汁中类胡萝卜素的含量，只有在20°C下进行PEF预处理才能提高提取率。与对照相比，所有预处理样品中苹果中总多酚的释放量增加。这项研究表明，联合的预处理可以进一步改善细胞的崩解和汁液的产量，并可能具有提高生物活性化合物回收率的潜力，具体取决于处理参数。

行业相关性

继之以PEF或OH进行的热处理仍然可以改善细胞崩解和汁液的收率。

此外，取决于所选的治疗条件，热效应和电场效应的组合还可以改善生物活性化合物的回收率。因此，组合的处理方法显示出在工业水平上应用的潜力，以改善汁液的释放并同时获得高质量的新产品。