Determining the dependence of potassium glyceroxide catalytic activity on storage conditions

Authors

DOI:

https://doi.org/10.15587/1729-4061.2025.322987

Keywords:

potassium glyceroxide transesterification catalyst, palm olein, triglyceride composition, melting point

Abstract

The object of the study is the catalytic activity of potassium glyceroxide in the chemical transesterification reaction of palm olein.

Transesterification is an important method for obtaining fats with desired properties, surfactants, alternative biofuels, etc. Industrial catalysts for chemical transesterification are explosive, flammable, and quickly lose activity. Alkali metal glyceroxides are safer and more stable catalysts.

The dependence of potassium glyceroxide catalytic activity (CAS Number 43110-90-3) on storage conditions was examined. The criterion for the catalyst's effectiveness was an increase in palm olein melting point by more than 12 °C after transesterification. Refined, bleached, and deodorized palm olein (DSTU 4438:2005, CAS Number 93334-39-5) was used, with the following parameters: peroxide value 0.18 ½ O mmol/kg, acid value 0.12 mg KOH/g, melting point 22.2 °C.

The conditions under which potassium glyceroxide retains its effectiveness were determined: storage time of 8 weeks at a temperature of 20 °C; storage time of 15 weeks at 5 °C. The melting point difference between original and transesterified olein was 12.5 °C and 13.6 °C, respectively. The chromatographic analysis confirmed changes in the triglyceride composition of the transesterified olein.

It was found that the industrial catalyst sodium methoxide, stored under these conditions, lost its effectiveness. The melting point difference between original and transesterified olein was 7.5 °C and 9.7 °C, respectively.

The obtained data allow for efficient transesterification of fats using potassium glyceroxide as a more stable catalyst, which can be pre-produced and stored at the enterprise

Author Biographies

Liubov Morozova, Vinnytsia National Agrarian University

PhD

Department of Technology of Breeding, Production and Processing of Small Animal Products

Vita Glavatchuk, Vinnytsia National Agrarian University

PhD

Department of Technology of Breeding, Production and Processing of Small Animal Products

Oleksandr Minieiev, Dnipro University of Technology

PhD, Associate Professor

Department of System Analysis and Control

Tetiana Tkachenko, Vinnytsia National Agrarian University

PhD

Department of Technology of Production and Processing of Animal Husbandry Products

Larysa Marushko, Lesya Ukrainka Volyn National University

Doctor of Pedagogical Sciences, Associate Professor

Department of Organic and Pharmaceutical Chemistry

Svitlana Korolchuk, Lesya Ukrainka Volyn National University

PhD, Associate Professor

Department of Inorganic and Physical Chemistry

Tanya Savchuk, Lesya Ukrainka Volyn National University

PhD, Associate Professor

Department of Inorganic and Physical Chemistry

Anastasiia Kolesnyk, O.M. Beketov National University of Urban Economy in Kharkiv

PhD, Senior Lecturer

Department of Lighting Engineering and Sources of Light

Valentyna Mohutova, Volodymyr Dahl East Ukrainian National University

PhD, Associate Professor

Department of Stock-Raising and Food Technologies

Roman Mylostyvyi, Dnipro State Agrarian and Economic University

PhD, Associate Professor, Dean

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Determining the dependence of potassium glyceroxide catalytic activity on storage conditions

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Published

2025-02-26

How to Cite

Morozova, L., Glavatchuk, V., Minieiev, O., Tkachenko, T., Marushko, L., Korolchuk, S., Savchuk, T., Kolesnyk, A., Mohutova, V., & Mylostyvyi, R. (2025). Determining the dependence of potassium glyceroxide catalytic activity on storage conditions. Eastern-European Journal of Enterprise Technologies, 1(6 (133), 27–34. https://doi.org/10.15587/1729-4061.2025.322987

Issue

Vol. 1 No. 6 (133) (2025): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2025 Liubov Morozova, Vita Glavatchuk, Oleksandr Minieiev, Tetiana Tkachenko, Larysa Marushko, Svitlana Korolchuk, Tanya Savchuk, Anastasiia Kolesnyk, Valentyna Mohutova, Roman Mylostyvyi

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