Etude de l’effet écosystémique sur les composants antioxydants et l’activité antioxydante du miel produit dans les régions écoclimatiques du Burundi
| dc.contributor.author | Hakizimana, Alice | |
| dc.contributor.author | Sous la direction de : Pr. Dr. Ir Niyukuri Jonathan, PhD | |
| dc.date.accessioned | 2025-11-04T09:16:37Z | |
| dc.date.available | 2025-11-04T09:16:37Z | |
| dc.date.issued | 2025-06 | |
| dc.description | Mémoire Présenté et défendu publiquement en vue de l’obtention du grade de Master en Sciences des Aliments et Nutrition. OPTION : Technologie et qualité des aliments | |
| dc.description.abstract | This study concerns the evaluation of physicochemical parameters and antioxidant activity of honey from different eco-climatic regions of Burundi in relation to environmental factors. The objective of this study is to determine the nutritional quality and antioxidant richness of honey according to the ecosystems and regions of Burundi. Twenty samples of honey collected from ecosystems of four eco-climatic regions are analyzed for their phenolic compound content and tested for their antioxidant activity. Total polyphenol contents were determined by the Folin-Ciocalteu method, flavonoid contents by the aluminum trichloride (AlCl3) method and antioxidant activity by DPPH and FRAP assays. For the analysis of physicochemical parameters, different methods were used. Honey samples from different ecosystems of four eco-climatic regions showed a statistically significant difference (p<0.05). The honey samples from the Imbo plain ecoclimatic-region (RECPI) have a higher ash content ranging between 1.06 and 1.6%. The highest content in free acidity was recorded in the honey samples from the Central Plateaux eco-climatic region (RECPC) with 52 and 58 meq/Kg. For flavonoids, the highest content is recorded in honey samples from RECPI with 11.13±1.42a mg EQ/kg and the lowest in honeys from the Congo Nile Ridge eco-climatic region (RECCCN) with 4.14±1.18c mg EQ/kg. For polyphenols, the highest content is recorded in honey samples from RECPC with 86.91±12.03a mg EAG/kg and the lowest in honey samples from RECCCN with 46.84±3.70c mg EAG/kg. For the DPPH test, the highest inhibition percentage is recorded in honey samples from RECPI with 51.80±6.25a % and the lowest in honey simples from RECCCN with 37.03±4.73b %. For the FRAP test, the highest content was recorded in honey samples from the Mumirwa eco-climatic region (RECM) with 43.62±3.96a EAG/100g of honey and the lowest content was recorded in honey samples from RECCCN with 27.73±3.90b mg EAG/100g of honey. The results obtained show that the composition of honey, including the antioxidant content, varies depending on the floral origin (ecosystem status) and geographical origin. The contents found in samples honey from the RECPC and RECPI do not show a statistically significant difference (p˃0.05). However, significant difference (p<0.05) is observed in the results obtained for RECCCN honey compared to other regions. | |
| dc.identifier.uri | https://repository.ub.edu.bi/handle/123456789/2114 | |
| dc.language.iso | fr | |
| dc.publisher | UB, EANSI | |
| dc.title | Etude de l’effet écosystémique sur les composants antioxydants et l’activité antioxydante du miel produit dans les régions écoclimatiques du Burundi |