Microwave Drying Characteristics and Moisture Content Prediction of Hawthorn

HE Fangjian; LI Jing; LIU Mingbao; FU Wenjie; LI Zhenfeng

doi:10.13386/j.issn1002-0306.2020090098

Volume 42 Issue 12

Jun. 2021

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Science and Technology of Food Industry > 2021 > 42(12): 32-38. > DOI: 10.13386/j.issn1002-0306.2020090098

HE Fangjian, LI Jing, LIU Mingbao, et al. Microwave Drying Characteristics and Moisture Content Prediction of Hawthorn[J]. Science and Technology of Food Industry, 2021, 42(12): 32−38. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2020090098.

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Microwave Drying Characteristics and Moisture Content Prediction of Hawthorn

HE Fangjian^1,,
LI Jing^{1, 2},
LIU Mingbao¹,
FU Wenjie¹,
LI Zhenfeng^{1, 2, ,}

1.
School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
2.
Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Wuxi 214122, China

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Received Date: September 09, 2020
Available Online: April 18, 2021

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Abstract

Abstract

This study aimed to explore microwave drying characteristics and realize moisture content prediction of hawthorn during drying process. The effects of drying temperature (50, 60, 70 ℃) and relative humidity (5%, 15%, 30%, 50%, 70%) on the drying characteristics and quality of hawthorn were studied. Extreme Learning Machine (ELM) was established to predict hawthorn moisture content. The results showed that the optimum drying conditions were 60 ℃ and 30% relative humidity. The color changed the least, the content of V_C was the highest, and the content of total flavonoids was higher for hawthorn. The model of ELM with the structure of “3-8-1” was established to predict moisture content. The determination coefficient R² value was 0.996 and root mean square error RMSE was 0.00952 between predicted value and experimental, which could effectively predict the moisture content of hawthorn during microwave drying. The results would provide a theoretical basis for microwave drying application and on-line moisture content prediction of hawthorn.
- hawthorn,
- microwave drying,
- relative humidity,
- extreme learning machine,
- moisture content prediction

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References

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