Enhancing the recovery yield and quality of oil from coconut residue by ultrasound pretreatment-assisted ethanol extraction
Coconut residue, a by-product of the coconut milk industry, contains a high percentage of oil. This study extracted oil from coconut residue using an ultrasound pretreatment process with absolute ethanol as a green solvent. Ultrasound power (120, 180, and 240 W), pretreatment time (0, 15, 30, and 45...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-08-01
|
| Series: | Journal of Agriculture and Food Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666154325005046 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849713131438211072 |
|---|---|
| author | Wanhusnee Che-U-Bong Parichat Hongsprabhas Attasak Jaree Utai Klinkesorn |
| author_facet | Wanhusnee Che-U-Bong Parichat Hongsprabhas Attasak Jaree Utai Klinkesorn |
| author_sort | Wanhusnee Che-U-Bong |
| collection | DOAJ |
| description | Coconut residue, a by-product of the coconut milk industry, contains a high percentage of oil. This study extracted oil from coconut residue using an ultrasound pretreatment process with absolute ethanol as a green solvent. Ultrasound power (120, 180, and 240 W), pretreatment time (0, 15, 30, and 45 min), material particle size (original, >0.60 mm, 0.60–0.36 mm, 0.36–0.25 mm, and <0.25 mm), and solvent-to-material ratio (10, 15, and 20 mL/g) were determined for maximum extraction efficiency and high oil quality. Results suggested that optimal ultrasound power and pretreatment time were 180 W and 45 min. The original unsieved sample size at an ethanol-to-material ratio of 15 mL/g was optimal for oil extraction, with the highest yield 23.3 wt%, the lowest free fatty acid (FFA) 0.9 % and peroxide value (PV) 0.25 meq/kg oil. Oil extracted from the coconut residue by ultrasound pretreatment had higher antioxidant activity and lower oxidation state than oil extracted from untreated material, as indicated by the PV and TBARS measurements, total phenolic content, DPPH scavenging activity and FTIR analysis. Findings suggested that ultrasound pretreatment effectively increased oil recovery from coconut residue using ethanol as the solvent, with no changes in physicochemical properties and fatty acid composition. |
| format | Article |
| id | doaj-art-1b68a1400a074f9aa75bc2132d6fcdf5 |
| institution | DOAJ |
| issn | 2666-1543 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Agriculture and Food Research |
| spelling | doaj-art-1b68a1400a074f9aa75bc2132d6fcdf52025-08-20T03:14:02ZengElsevierJournal of Agriculture and Food Research2666-15432025-08-012210213310.1016/j.jafr.2025.102133Enhancing the recovery yield and quality of oil from coconut residue by ultrasound pretreatment-assisted ethanol extractionWanhusnee Che-U-Bong0Parichat Hongsprabhas1Attasak Jaree2Utai Klinkesorn3Department of Food Science and Technology, Faculty of Agro-Industry, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, ThailandDepartment of Food Science and Technology, Faculty of Agro-Industry, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand; Center of Excellence on Agricultural Biotechnology (AG-BIO/PERDO-CHE), Bangkok 10900, ThailandDepartment of Chemical Engineering, Faculty of Engineering, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, ThailandDepartment of Food Science and Technology, Faculty of Agro-Industry, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand; Research Unit on Innovative Technologies for Production and Delivery of Functional Biomolecules, Kasetsart University Research and Development Institute, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand; Corresponding author. Department of Food Science and Technology, Faculty of Agro-Industry, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand.Coconut residue, a by-product of the coconut milk industry, contains a high percentage of oil. This study extracted oil from coconut residue using an ultrasound pretreatment process with absolute ethanol as a green solvent. Ultrasound power (120, 180, and 240 W), pretreatment time (0, 15, 30, and 45 min), material particle size (original, >0.60 mm, 0.60–0.36 mm, 0.36–0.25 mm, and <0.25 mm), and solvent-to-material ratio (10, 15, and 20 mL/g) were determined for maximum extraction efficiency and high oil quality. Results suggested that optimal ultrasound power and pretreatment time were 180 W and 45 min. The original unsieved sample size at an ethanol-to-material ratio of 15 mL/g was optimal for oil extraction, with the highest yield 23.3 wt%, the lowest free fatty acid (FFA) 0.9 % and peroxide value (PV) 0.25 meq/kg oil. Oil extracted from the coconut residue by ultrasound pretreatment had higher antioxidant activity and lower oxidation state than oil extracted from untreated material, as indicated by the PV and TBARS measurements, total phenolic content, DPPH scavenging activity and FTIR analysis. Findings suggested that ultrasound pretreatment effectively increased oil recovery from coconut residue using ethanol as the solvent, with no changes in physicochemical properties and fatty acid composition.http://www.sciencedirect.com/science/article/pii/S2666154325005046Coconut residueOil extractionUltrasound pretreatmentMaterial particle sizeFTIR analysisPhysicochemical property |
| spellingShingle | Wanhusnee Che-U-Bong Parichat Hongsprabhas Attasak Jaree Utai Klinkesorn Enhancing the recovery yield and quality of oil from coconut residue by ultrasound pretreatment-assisted ethanol extraction Journal of Agriculture and Food Research Coconut residue Oil extraction Ultrasound pretreatment Material particle size FTIR analysis Physicochemical property |
| title | Enhancing the recovery yield and quality of oil from coconut residue by ultrasound pretreatment-assisted ethanol extraction |
| title_full | Enhancing the recovery yield and quality of oil from coconut residue by ultrasound pretreatment-assisted ethanol extraction |
| title_fullStr | Enhancing the recovery yield and quality of oil from coconut residue by ultrasound pretreatment-assisted ethanol extraction |
| title_full_unstemmed | Enhancing the recovery yield and quality of oil from coconut residue by ultrasound pretreatment-assisted ethanol extraction |
| title_short | Enhancing the recovery yield and quality of oil from coconut residue by ultrasound pretreatment-assisted ethanol extraction |
| title_sort | enhancing the recovery yield and quality of oil from coconut residue by ultrasound pretreatment assisted ethanol extraction |
| topic | Coconut residue Oil extraction Ultrasound pretreatment Material particle size FTIR analysis Physicochemical property |
| url | http://www.sciencedirect.com/science/article/pii/S2666154325005046 |
| work_keys_str_mv | AT wanhusneecheubong enhancingtherecoveryyieldandqualityofoilfromcoconutresiduebyultrasoundpretreatmentassistedethanolextraction AT parichathongsprabhas enhancingtherecoveryyieldandqualityofoilfromcoconutresiduebyultrasoundpretreatmentassistedethanolextraction AT attasakjaree enhancingtherecoveryyieldandqualityofoilfromcoconutresiduebyultrasoundpretreatmentassistedethanolextraction AT utaiklinkesorn enhancingtherecoveryyieldandqualityofoilfromcoconutresiduebyultrasoundpretreatmentassistedethanolextraction |