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Start Over Author "SONG Xiaoqian" Publisher elsevier bv
26 results on '"SONG Xiaoqian"'

17. Conveyor belt catalytic infrared as a novel apparatus for blanching processing applied to sweet potatoes in the industrial scale

Author

Okonkwo Clinton Emeka, Xiaojie Yu, Song Xiaoqian, Hafida Wahia, Baoguo Xu, Li Chen, Cunshan Zhou, and Abu ElGasim A. Yagoub

Subjects
0106 biological sciences, Materials science, Moisture, Infrared, Blanching, Conveyor belt, 04 agricultural and veterinary sciences, Microstructure, 040401 food science, 01 natural sciences, Catalysis, chemistry.chemical_compound, 0404 agricultural biotechnology, Point of delivery, chemistry, 010608 biotechnology, Phenol, Food science, Food Science
Abstract

In this study, effects of conveyor belt catalytic infrared blanching (CBCIRB) on peroxidase (POD), moisture reduction, physical and chemical properties, and microstructure of sweet potato slices were investigated. The parameters of CBCIRB were infrared irradiation distance (6, 12, and 18 cm), sample thickness (3, 5, and 7 mm), and conveyor speed (0.7, 0.35, 0.1 m/min, etc.). Meanwhile, the effect of conventional hot water blanching (HB) on sweet potato slices were also investigated. The results showed that shortening the infrared irradiation distance and reducing the slice thickness could both accelerate the POD inactivation rate. When 90% POD inactivation was achieved, CBCIRB samples yielded better hardness and higher preservation of phytochemicals than HB samples. The appropriate CBCIRB parameters were the slice thickness of 3 mm, infrared radiation distance of 12 cm and conveyor belt speed of 0.16 m/min, the moisture reduction, surface colour change, hardness, vitamin C retention rate, β-carotene retention rate, and total phenol content were: 78.34%, 7.41, 1690.4 g, 75.16%, 133.49%, and 1.03 mg/g, respectively. The microstructure observation showed that the damage of sweet potato slice cells by HB was more severe than CBCIRB. Overall, CBCIRB achieved higher product quality in a relatively uniform air environment.

Published
2021

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