Journal of Applied Science and Engineering

Published by Tamkang University Press

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The Variation of Methanol Content in the Process of Clarifying Honeydew Juice with Water-soluble Chitosan

 2026

 Volume 33

Mingrui Wang1, Zeyu Ping1, and Xin Li1,2

1Kaifeng University, Kaifeng 475004, China

2Kaifeng Fermented Food Engineering Technology Research Center, Kaifeng 475004, China

Received: January 26, 2026
Accepted: June 10, 2026
Publication Date: July 10, 2026

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Methanol content before and after clarification of honeydew juice with chitosan

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

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Objective: In the process of clarifying Honeydew juice with chitosan, the change of methanol content in Honeydew juice was mainly investigated. Methods: The effects of chitosan addition amount, initial pH value of clarification, clarification time and clarification temperature on the clarification effect and methanol production of Honeydew juice were investigated by single factor and orthogonal test with the light transmittance and methanol production as indicators. Results: The order of influencing factors on methanol production of honeydew juice after clarification was as follows: initial pH>temperature>chitosan addition>clarification time. The minimum amount of methanol production of Honeydew juice and the best clarification conditions were 0.04 g/100 mL chitosan addition, pH=5.5, temperature 35°C, clarification for 30 minutes. Under this process condition, the methanol content is 28.6 mg/L, and the light transmittance can reach 96.35%. Conclusion: Chitosan can significantly reduce the methanol content in Honeydew juice.

Keywords: Chitosan, Pectinase; Clarification; Methanol content

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