Methods of processing of some under-utilized yam and cocoyam tuber varieties: effect on carotenoid content
| dc.creator | Ukom, A.N. | |
| dc.creator | Ojimelukwe, P.C. | |
| dc.creator | Alamu, Emmanuel Oladeji | |
| dc.date | 2016 | |
| dc.date | 2016-09-27T11:32:19Z | |
| dc.date | 2016-09-27T11:32:19Z | |
| dc.date.accessioned | 2026-06-27T15:51:27Z | |
| dc.description | Identification and quantification of carotenoids from yam and cocoyam were evaluated after different processing methods. Seven carotenoids were identified by HPLC-DAD both in the raw and processed tubers. The mean carotenoids in yam, D. cayenensis was α-carotene (0.78 μg/g), 9-cis-β-carotene (0.71 μg/g), all-trans-β-carotene (1.28 μg/g); in D. bulbifera was lutein (1.53 μg/g), 9-cis-β-carotene (0.39 μg/g), all-trans-β-carotene (0.19 μg/g). Cocoyam, X. maffa (Scoth) had lutein (0.95 μg/g), α-carotene (1.35 μg/g), 9-cis-β-carotene (0.78 μg/g) and all-trans-β-carotene (1.91 μg/g). The impact of methods of processing show that the loss of 9-cis-β-carotene and/or all-trans β-carotene in the boiled process was associated with increase in 13-cis-β-carotene in the yam/cocoyam samples. Roasted method show minimal loss of carotenoids when compared with fried and oven-dried methods. Mean percentage retention of total carotenoids after processing was boiling (80.1%), roasting (79%), oven-drying (24.51%) and frying (15%). There was relative good retention of total carotenoids in the boiled and roasted process to improve human nutrition. | |
| dc.identifier | https://hdl.handle.net/10568/77139 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/115529 | |
| dc.language | en | |
| dc.rights | Limited Access | |
| dc.source | Ukom, A.N., Ojimelukwe, P.C. & Alamu, E. (2016). Methods of processing of some under-utilized yam and cocoyam tuber varieties: effect on carotenoid content. Journal of Advances in Food Science & Technology, 3(1), 11-20. | |
| dc.subject | carotenoids | |
| dc.subject | yams | |
| dc.subject | cocoyam (taro) | |
| dc.title | Methods of processing of some under-utilized yam and cocoyam tuber varieties: effect on carotenoid content | |
| dc.type | Journal Article |