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• W2794375814 abstract "Abstract Specific heat capacity ( c p ) is a temperature dependent physical property of foods. Lipid—being a macromolecular component of food—provides some fraction of the food's overall heat capacity. Fats/oils are complex chemicals that are generally defined by carbon length and degree of unsaturation. The objective of this investigation was to use advanced specific heat capacity measurement to determine the effect of fatty acid chemical structure on specific heat capacity of food lipids. In this investigation, the specific heat capacity of a series of triacylglycerols were measured to quantify the influence of fatty acid composition on specific heat capacity based on two parameters; the ‐average carbon number ( C ) and the average number of double bonds ( U ). A prediction model for specific heat capacity of food lipids as a function of C , U and temperature ( T ) has been developed. A multiple linear regression to the three‐parameter model ( R 2 = 0.87) provided a good fit to the experimental data. The prediction model was evaluated by comparison with previously published specific heat capacity values of vegetable oils. It was found that the model provided a 0.53% error, while three other models from the literature predicted c p values with 0.85% to 1.83% average relative deviation from experimental data. The outcomes from this research confirm that the thermophysical properties of fat present in foods are directly related to the physical chemical properties. Practical Application The specific heat capacity of food products is widely used in process design. Improvements of current models to predict specific heat capacity of food products will assist in the development of efficient processes and in the control of food quality and safety. Furthermore, the understanding of how changes in chemical structure of macromolecular components of foods effect thermophysical properties may begin to allude to models that are not just empirical, but represent portions of the differences in chemistry." @default.
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• W2794375814 date "2018-03-26" @default.
• W2794375814 modified "2023-10-01" @default.
• W2794375814 title "Prediction of Liquid Specific Heat Capacity of Food Lipids" @default.
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• W2794375814 doi "https://doi.org/10.1111/1750-3841.14089" @default.
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