Abstract
Objective:This study focuses on optimizing the heat pump drying process of carrot.Methods:On the basis of single factor experiment, Box-Behnken experiment was designed. Color difference, rehydration ratio and β-carotene content were used to study the effects of initial temperature, drying temperature rise and slice thickness on carrot drying quality. The regression equation was established, and the interaction between three independent factors on the response was analyzed. The optimal drying process parameters and the predicted values of carrot heat pump drying were obtained. Finally, the optimal parameters were determined by comparing the experimental results with the predicted values.Results:The optimal process parameters of carrot heat pump drying were as follows: the initial and drying temperature were 54.1 ℃ and 9.25 ℃ respectively, and the slice thickness was 3.8 mm. Under the control of these conditions, the color difference value of carrot was 9.759, the rehydration ratio was 6.196, with the content of β-carotene of 34.378 mg/100 g. The dried product was bright orange red, and the rehydration ratio and the retention of β-carotene were high.Conclusion:Response surface method can determine the best process parameters of carrot heat pump drying, and help to obtain the best quality of carrot dried products.
Publication Date
7-4-2022
First Page
209
Last Page
214
DOI
10.13652/j.issn.1003-5788.2022.01.035
Recommended Citation
Yu-hang, PENG; Guang-hong, WANG; Fei-xue, SUN; and Ting-xiang, JIN
(2022)
"Optimization of carrot heat pump drying process by response surface methodology,"
Food and Machinery: Vol. 38:
Iss.
1, Article 35.
DOI: 10.13652/j.issn.1003-5788.2022.01.035
Available at:
https://www.ifoodmm.cn/journal/vol38/iss1/35
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