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Correlation of viscoelastic behavior with water state and ultrastructure in hot air-dried carrots

机译：水状态粘弹性行为与热风干胡萝卜超微结构的相关性

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This study evaluated and correlated the viscoelastic behavior, water state and ultrastructure of hot air-dried carrots. The results revealed that with increasing time, hot air-drying increased loss tangent (Tan delta) and reduced storage (G') and loss (G '') moduli, cell wall components including total pectin (Tp), hemicellulose (He), and cellulose (Ce), free water (reflected by relaxation time T-23 and relative area M-23) in vacuoles, and immobilized water (T-22 and M-22) in cytoplasm and extracellular space in carrots. Pearson's correlation analysis showed that G' and G '' were positively correlated (p 0.01) with T-22, T-23, M-23, Tp, He, and Ce in dried carrots, whereas Tan delta was negatively with these indicators (p 0.01). Principal component regression analysis revealed that the contribution rate of principal factor 1 and 2 (F1 and F2) was 72.7 and 21.9%, respectively. The Tp, He, Ce, T-23, and M-23 (42.3, 42.7, 42.5, 43.8 and 44.2% of the explained variance, respectively) were well explained by F1. The G', G '', and Tan delta could be predicted by the following regression equation, G' = 0.696 x F1, G '' = 0.680 x F1, and Tan delta = 0.341 0.652 x F1. These relationships were consistent with the more pronounced changes (plasmolysis of cytoplasm, disruption of plasmalemma and tonoplast, and degradation of cell walls and middle lamella) in the ultrastructure of dried carrots. (C) 2014 Elsevier Ltd. All rights reserved.
机译：该研究评估和相关的热风干胡萝卜的粘弹性行为，水状态和超微结构。结果表明，随着时间的增加，热风干燥增加的损失正切（Tan Delta）和降低的储存（G'）和损失（G''）Moduli，包括总果胶（TP），半纤维素（HemiCellose（He）的细胞壁组分，和纤维素（Ce），在空泡中的空泡和固定的水（T-22和M-22）中的空泡和相对面积M-23反射的纤维素（反射），并在胡萝卜中固定水（T-22和M-22）。 Pearson的相关性分析表明，G'和G''与干胡萝卜中的T-22，T-23，M-23，Tp，Tp，H 2，M-23，Tp，He和Ce呈正相关（p <0.01），而Tan delta对这些呈负面影响指示剂（P <0.01）。主成分回归分析显示，主要因素1和2（F1和F2）的贡献率分别为72.7和21.9％。 TP，He，Ce，T-23和M-23（42.3,42.7,42.5,43.8和44.2％）分别得到很好的解释。 G'，G''和TAN DELTA可以通过以下回归方程来预测G'= 0.696 x F1，G''= 0.680×F1，而TAN DELTA = 0.341 0.652×F1。这些关系与更明显的变化（细胞质的质子溶解，离子术的破坏，性碎质的破坏，以及细胞壁和中间薄片的降解）一致。 （c）2014年elestvier有限公司保留所有权利。

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