ORIGINAL RESEARCH
Physicochemical Properties of Ethiopian Orange (Citrus Sinensis) Peels and Extracted Pectin by Varieties
 
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1
Wollo University, Ethiopia
 
2
UGA Cooperative Extension, University of Georgia Athens, United States
 
 
Submission date: 2024-01-10
 
 
Final revision date: 2024-02-23
 
 
Acceptance date: 2024-06-12
 
 
Online publication date: 2024-09-13
 
 
Corresponding author
Abebe Teshome Ayele   

Department of Food Engineering, Kombolcha Institute of Technology, Wollo University, Ethiopia
 
 
Charles Odilichukwu R. Okpala   

UGA Cooperative Extension, University of Georgia, Athens, GA 30602, USA
 
 
 
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ABSTRACT
The physicochemical properties of Ethiopian orange (Citrus sinensis) peels and their extracted pectin by varieties were investigated. Specifically, orange (peel) varieties included Valencia, Mandarin, and Gunda Gundo, and their extracted pectin was physicochemically characterized in terms of yield, moisture, ash, viscosity, acetyl, equivalent weight, methoxyl, degree of esterification, and anhydrouronic acid aspects. In many instances, the physicochemical properties of extracted pectin differed significantly (p<0.05). For instance, the extracted pectin from the Mandarin peel variety showed greater yield, viscosity, equivalent weight, methoxyl, anhydrouronic acid, and degree of esterification, but less acetyl, moisture, pH, and ash. Contrarily, the extracted pectin from Valencia showed greater acetyl concentration, moisture, and ash content but less yield, viscosity, equivalent weight, anhydrouronic acid, and esterification. Feasibly, the Mandarin variety appears to be a rich pectin resource with high promise as a significant raw material for the food processing industry.
eISSN:2083-5906
ISSN:1230-1485
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