Quantification of Lycopene and Β-Carotene in Coloured Sweet Potatoes (Ipomoea Batatas L.) From Donge Zanzibar
| dc.contributor.author | MLEKWA, Mosi Juma | |
| dc.date.accessioned | 2024-06-11T09:47:27Z | |
| dc.date.available | 2024-06-11T09:47:27Z | |
| dc.date.issued | 2022-12-01 | |
| dc.description | This study characterize and quantify lycopene and β-carotene present in available coloured sweet potatoes found in Donge, Zanzibar. | |
| dc.description.abstract | Coloured fruits, vegetables and tuber crops contain important food carotenoids such as lycopene and β-carotene that play significant nutritional values to human body. While lycopene is a well-known antioxidant agent β-carotene is considered as a potential source of vitamin A. It is unfortunate that these crops are neglected and their nutritional values are rarely documented. This study aimed to characterize and quantify lycopene and β-carotene present in available coloured sweet potatoes found in Donge, Zanzibar. The study employed gravitational methods and UV-VIS spectrophotometer techniques to quantify and identify lycopene and β-carotene respectively in the three common sweet potato varieties farmed in Zanzibar to assess their composition and nutritional values. The results revealed presence of maximum peaks for β-carotene and lycopene at wavelength range of 375nm to 475nm. Both lycopene and β-carotene were found in deep orange flesh (Mataya) and light orange flesh (Jowel) varieties while yellow flesh variety contained β-carotene only without lycopene. The levels of carotenoids were significantly higher in deep orange flesh (mean = 3285.45 µg/g) variety followed by light orange (mean = 2811.43 µg/g) and yellow flesh variety (mean 1015.38 µg/g). This carotenoids content trend is directly related to the colour intensity of the sweet potato varieties. Compositional analysis of carotenoids showed slight dominance of lycopene over β-carotene in Deep Orange Flesh and Light Orange Flesh but not in yellow flesh that was entirely dominated by β-carotene only. In general level of carotenoids content reveals the nutritional significant of all three varieties, however the highest levels of both lycopene over β-carotene in deep orange flesh make the varieties more suitable in addressing vitamin A deficiency (VAD) and problem of chronic diseases associated with oxidant stresses | |
| dc.description.sponsorship | SUZA | |
| dc.identifier.other | THESIS | |
| dc.identifier.uri | https://repository.suza.ac.tz/handle/123456789/308 | |
| dc.language.iso | en | |
| dc.publisher | SUZA | |
| dc.relation.ispartofseries | 2022 | |
| dc.title | Quantification of Lycopene and Β-Carotene in Coloured Sweet Potatoes (Ipomoea Batatas L.) From Donge Zanzibar | |
| dc.type | Thesis |