Abstract
At present, the frequency and mode of ultrasonic equipment used in most of the studies of ultrasound-assisted enzymatic hydrolysis are single, and the chemical parameters in the process cannot be measured in real time. In this paper, a programmable logic controller (PLC) based control system of S-type ultrasonic-array-assisted enzymatic hydrolysis was designed. The single-, dual-and triple-frequency mode switching of five frequencies was realized, and a mathematical model with ACE (Angiotensin I-converting enzyme) inhibition rate as an index was established by using near-infrared spectroscopy and PLC control. Therefore, the end-point of enzymatic hydrolysis could be determined by real-time on-line in situ monitoring of ACE inhibitory rate. It was found that the predicted value of ACE inhibitory rate was highly correlated with the measured value (R2＞0.84), and the end-point of enzymatic hydrolysis could be controlled automatically.
Publication Date
3-28-2021
First Page
76
Last Page
80
DOI
10.13652/j.issn.1003-5788.2021.03.014
Recommended Citation
Yan-hua, DING; Hai-le, MA; Wen-juan, QU; and Feng, XIAO
(2021)
"Design and experiment of ultrasound-array-assisted enzymatic hydrolysis control system based on PLC,"
Food and Machinery: Vol. 37:
Iss.
3, Article 14.
DOI: 10.13652/j.issn.1003-5788.2021.03.014
Available at:
https://www.ifoodmm.cn/journal/vol37/iss3/14
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