Fatemeh Mozafari Ghoraba, Ahmad Ghazanfari Moghaddam, Mohsen Shamsi, Ali Mohebbi
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引用次数: 0
Abstract
Water transport in potato microstructure occurs through symplastic, apoplastic, and transcellular mechanisms. Understanding these microscale behaviors is crucial for enhancing food processing operations and achieving high-quality processed products. In this research, we analyzed low thermal water transport in potato cells. The cell designs included one, two, and four simplified cell configurations, and the CFD method simulated water transport in COMSOL Multiphysics. Three mass concentration equations, based on diffusion, permeability, and capillary diffusivity were used to estimate moisture concentration variation for intracellular, intercellular, and cell wall environments. Then, the velocities of water within the cell, through the cell wall, and between the cells were calculated using the Brinkman equation under periodic boundary conditions. The results indicated that the intracellular water concentration profile for all three designs was similar. At 0.78% cell fraction, there was the greatest difference of 3.22 × 10− 9 m s− 1 in average velocity, while the 0.72% cell fraction showed no difference in average velocity for designs. Water concentration simulations indicated that concentration within the cells decreased from an initial value of 4.5 × 104 to a final value of 3 × 104 within 100s. The units’ center temperature increased from initial degrees of 297 K to 330 K in the same period. Intercellular water diffusivity increased with cell fraction. The findings indicate that velocity and diffusivity are influenced by fraction and design, while intercellular fraction rather than cell designs determine mass concentration.
期刊介绍：
Biophysical studies of foods and agricultural products involve research at the interface of chemistry, biology, and engineering, as well as the new interdisciplinary areas of materials science and nanotechnology. Such studies include but are certainly not limited to research in the following areas: the structure of food molecules, biopolymers, and biomaterials on the molecular, microscopic, and mesoscopic scales; the molecular basis of structure generation and maintenance in specific foods, feeds, food processing operations, and agricultural products; the mechanisms of microbial growth, death and antimicrobial action; structure/function relationships in food and agricultural biopolymers; novel biophysical techniques (spectroscopic, microscopic, thermal, rheological, etc.) for structural and dynamical characterization of food and agricultural materials and products; the properties of amorphous biomaterials and their influence on chemical reaction rate, microbial growth, or sensory properties; and molecular mechanisms of taste and smell.
A hallmark of such research is a dependence on various methods of instrumental analysis that provide information on the molecular level, on various physical and chemical theories used to understand the interrelations among biological molecules, and an attempt to relate macroscopic chemical and physical properties and biological functions to the molecular structure and microscopic organization of the biological material.
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