Citation
Bello M. O., . and Olabanji I. O., . and Abdul-Hammed M., . and Okunade T. D., . Characterization of domestic onion wastes and bulb (Allium cepa L.): fatty acids and metal contents. pp. 2153-2158. ISSN 22317546
Abstract
Different parts of onion bulb that constitute to waste were characterized for their nutritive value using standard methods. Proximate analysis of the samples revealed that protein (8.76) and ash (11.46) was highest in top-bottom part carbohydrate (66.12) in outer scale fat (15.71) and fiber (26.84) was highest in outer scale part while highest amount of moisture (9.21) was reported in top-bottom part. X-ray spectrometry revealed that the outer scale had the highest level of calcium (3.05) followed by the onion bulb (2.98) and least in the top-bottom part (2.08). Gas chromatographic analysis of the extracted oil revealed that the oil from the outer scale part has the highest percentage of linoleic acid 52.87. The iodine value of the bulb oil top-bottom oil and the outer scale oil were 143.35 142.08 and 189.52 respectively. The properties of different parts of onion that go to waste revealed that they could be dietary sources of nutritive elements and essential fatty acids.
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Abstract
Different parts of onion bulb that constitute to waste were characterized for their nutritive value using standard methods. Proximate analysis of the samples revealed that protein (8.76) and ash (11.46) was highest in top-bottom part carbohydrate (66.12) in outer scale fat (15.71) and fiber (26.84) was highest in outer scale part while highest amount of moisture (9.21) was reported in top-bottom part. X-ray spectrometry revealed that the outer scale had the highest level of calcium (3.05) followed by the onion bulb (2.98) and least in the top-bottom part (2.08). Gas chromatographic analysis of the extracted oil revealed that the oil from the outer scale part has the highest percentage of linoleic acid 52.87. The iodine value of the bulb oil top-bottom oil and the outer scale oil were 143.35 142.08 and 189.52 respectively. The properties of different parts of onion that go to waste revealed that they could be dietary sources of nutritive elements and essential fatty acids.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Onions |
| AGROVOC Term: | Food wastes |
| AGROVOC Term: | Allium cepa |
| AGROVOC Term: | Bulbs |
| AGROVOC Term: | Fatty acids |
| AGROVOC Term: | Nutritive value |
| AGROVOC Term: | Proteins |
| AGROVOC Term: | Ash content |
| AGROVOC Term: | Carbohydrates |
| AGROVOC Term: | Moisture content |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 06:26 |
| URI: | http://webagris.upm.edu.my/id/eprint/21319 |
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