The effect of fruit factors on the bruise susceptibility of apples
The effect of fruit factors on the bruise susceptibility of apples
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DOI：
10.1016/j.postharvbio.2007.03.017
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发表时间：
2007-10-01
影响因子：
7
通讯作者：
Tijskens, E.
中科院分区：
文献类型：
--
作者：
Van Zeebroeck, M.;Van Linden, V.;Tijskens, E.
讨论了离散元法（DEM）在水果运输和搬运过程中损伤模拟中的应用所必需的损伤预测模型。瘀伤预测模型将碰撞过程中的接触力通过接触力模型通过DEM计算得到，与真实的瘀伤损伤相联系。除了DEM之外，瘀伤预测模型还可以提供有关水果因素（如成熟度）对瘀伤敏感性的影响的有用信息，从而为水果处理提供建议。以冲击能或峰值接触力为自变量建立回归模型。讨论了两种模型的优缺点。以苹果品种“Jonagold”为研究对象，建立了由摆锤控制的撞伤预测模型。建立了果实成熟度等因素的多元线性和非线性回归模型。声学刚度，果实温度，曲率半径和采收日期，有瘀伤损伤。瘀伤量作为苹果瘀伤的衡量标准。确定了显著的主效应和显著的相互作用。确定了果实因素之间的相互作用（例如收获日期和硬度之间的相互作用），以及果实因素和瘀伤程度之间的相互作用。这些水果因素对瘀伤损伤的影响大多可以用文献中描述的理论瘀伤模型来解释。(C) 2007 Elsevier B.V.版权所有
Bruise prediction models which are essential for the applicability of the discrete element method (DEM) to simulate bruise damage during fruit transport and handling are discussed. Bruise prediction models relate the contact force during impact, as calculated by DEM through contact force models, with the real bruise damage. Apart from DEM, bruise prediction models can provide useful information about the influence of fruit factors (e.g. ripeness) on bruise susceptibility, leading to recommendations for fruit handling. Regression models were built with impact energy or peak contact force as independent variables. Advantages and disadvantages of both models are discussed. Bruise prediction models were constructed for the apple cultivar 'Jonagold', with impacts controlled by a pendulum. Multiple linear and nonlinear regression models were built to link fruit factors such as ripeness. acoustic stiffness, fruit temperature, radius of curvature and harvest date, with bruise damage. Bruise volume was used as a measure for apple bruising. Significant main effects and significant interactions between fruit factors were identified. Interactions between fruit factors (e.g. interaction between harvest date and stiffness), along with interactions between fruit factors and the degree of bruising, were identified. Most of the effects of those fruit factors on bruise damage could be explained by applying theoretical bruise models described in the literature. (C) 2007 Elsevier B.V. All rights reserved.