Processing of desiccated coconut medium under uniaxial compression loading

B.Sc. Amarsanaa Tsogoo, BSc

Diplomová práce

Abstract:

The study aimed at exploring the effects of different pre-treatment temperatures on desiccated coconut medium under uniaxial compression test under cold and hot pressing. A general overview of the coconut plant was investigated to better understand the background. There were some typical techniques for extracting oil from oil-bearing plants, along with descriptions of their optimization principles. Additionally, a review of the physical and mechanical characteristics of coconut plant was conducted. The experimental data were statistically analyzed by employing descriptive statistics, correlation and regression techniques using STATISTICA 13 software. The initial pressing height of the samples was measured at 100 mm using a pressing vessel of diameter 60 mm with a plunger. The samples were pretreated at temperatures from 40 to 120, all at a constant time of 30 minutes. Sample laboratory temperature of 20 ºC served as the control. The dependencies between the force and deformation curves were recorded at a maximum force of 200 kN and a speed of 5 mm min-1. Parameters calculated were mass of oil 76.26 ± 0.57 (g), oil yield 58.56 ± 0.43 (%), oil expression efficiency 94.64 ± 0.70 (%), energy 1.20± 0.00 (kJ), and hardness 2.26 ± 0.05 (kN/mm). The ANOVA results showed that deformation, energy, hardness and oil yield were significant (P-value < 0.05) with high coefficients of determination (R2) between 92 and 99 %.

Keywords

coconut medium, extraction techniques, utilization, quality characteristics, oil processing

Jazyk práce: angličtina

Datum vytvoření / odevzdání či podání práce: 31. 3. 2024

Obhajoba závěrečné práce

• Vedoucí: doc. Ing. Abraham Kabutey, Ph.D.
• Oponent: Čestmír Mizera, Ph.D.

Česká zemědělská univerzita v Praze

Technická fakulta

Magisterský studijní program:
Technology and Environmental Engineering