Optimization of Processing Parameters for Continuous Microwave Drying of Crab Apple Slices via Response Surface Methodology
2024
Md Kamruzzaman | Liuyang Shen | Yuhan Zhang | Liangliang Xue | Kesen Fu | Haihui Zhu | Xianzhe Zheng
To improve product quality and obtain suitable processing parameters for crab apple slices (CASs) produced by continuous microwave drying (CMD), the effects of processing parameters, including slice thickness, microwave power, air velocity, and conveyor belt speed, on the evaluation indexes in terms of temperature, moisture content, color (L*, a*, b*), hardness, brittleness, and total phenolic content of CASs were investigated via the response surface method. The results indicated that microwave power has the greatest effect on the evaluation indexes applied to the CASs under CMD, followed by air velocity, slice thickness, and conveyor belt speed. To produce the desired product quality, the appropriate parameters for CMD of CASs were optimized as 1.25 mm slice thickness, 14,630 W microwave power, 0.50 m·:s&minus:1 air velocity, and 0.33 m·:min&minus:1 conveyor belt speed. Following that, the moisture content under CMD was found to be 13.53%, the desired color, hardness 0.79 g, brittleness 12.97 (number of peaks), and the total phenolic content 5.48 mg·:g&minus:1. This research provides a theoretical framework for optimizing the processing parameters of CASs using the response surface method.
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