Physico Chemical Characteristics of Ethiopian Date Palm Fruit as Compared to Imported Date Palm Fruits from Dubai and Saudi
| dc.contributor.advisor | Getachew, Paulos (PhD) | |
| dc.contributor.author | Hussen, Sada | |
| dc.date.accessioned | 2022-03-07T06:07:15Z | |
| dc.date.accessioned | 2023-11-09T15:32:39Z | |
| dc.date.available | 2022-03-07T06:07:15Z | |
| dc.date.available | 2023-11-09T15:32:39Z | |
| dc.date.issued | 2021-12-21 | |
| dc.description.abstract | The consumption and production of Date palm fruit is very low, despite its long history of domestication in Ethiopia. This is mainly due to lack of awareness on the nutritional and health benefits, scant studies on physicochemical characteristics, and shortage of DPF plantation. The present study aimed to evaluate the physical characteristics, nutritional composition, antioxidant properties and glycemic index/load of Ethiopian harvest in comparison with the imported DPFs from Dubai and Saudi Arabia. Most of the physical characteristics were measured by gravimetric methods, AOAC 2000 methods were used for majority of the analysis, HPLC method for sugar profile, the average fruit weight of the DPF harvested in Saudi Arabia, Dubai, Ethiopia was 6.36 g, 5.61 g, and 4.56 g, respectively. The seed weight of the respective three DPFs was 0.84, 0.60 and 0.92g with flesh weight of (5.46, 6.41, and 3.63) g. This resulted the highest and lowest seed to flesh ratio in the Ethiopian (0.29) and Dubai (0.07) harvests, respectively. The average fruit length was 2.86mm, 2.72mm, and 3.06 mm for the Saudi, Dubai and Ethiopian harvests. The average kernel weight of the DPFs was (350.85, 311.20, 227.75)g for the Dubai, Saudi and Ethiopian harvests, respectively. The Ethiopian harvest had the smallest date size of 5.99mm. The Dubai harvest had the biggest diameter of 14.66mm. The Ethiopian and Saudi harvest DPF had bigger length than the Dubai harvest. In contrast, the Dubai harvest DPF had larger diameter (14.66 mm) than the Ethiopian (5.90mm) (p<0.05) and Saudi (13.76mm) harvests, the result of the texture implies that our date palm fruit is harder, brittle and it has high shearing and cutting effect but the date from Saudi is the stickiest and adhesive when we compare with the two date palm fruits. The Lightness redness and yellowness values of the Ethiopian, Dubai and Saudi harvest DPFs were (44.19, 4.44, 20.48), (45.15, 4.84, 8.00), and (55.50, 6.31, 7.50) (p>0.05), respectively. Having the lowest L value the Ethiopian harvest was darker in appearance than the other dates. The Dubai and Saudi DPFs had the highest moisture content of 16%; whereas the Ethiopian harvest had the lowest value of 11%. Accordingly, the DPF harvests in this study were semi-soft dates. Interestingly, the Ethiopian harvest DPF had the highest crude fiber content of 6.1%. The total and utilizable carbohydrate contents were the highest in Ethiopian harvest DPF (85.5, 79.4) %, respectively. The gross energy results increased from 311 kcal for the Dubai and Saudi harvests to the highest energy content in Ethiopian harvest DPF with 330 kcal. The fructose content in the Ethiopian, Dubai, and Saudi harvest DPFs was 12.20, 2.58, and 24.90%, respectively. Meanwhile the glucose content was 12.42, 27.05, and 26.06% for the respective DPFs. But the sucrose content was small as compared to the two reducing sugar (glucose and fructose). The dominance of reducing sugars indicated that the studied dates were soft date. The Dubai harvest DPF had the highest total sugar content (54.57%), while the Ethiopian harvest had the lowest sugar amount (29.57%).The DPPH (1, 1-diphenyl-2picrylhydrazyl) free radical scavenging assay was in order of Dubai<Ethiopia<Saudi Arabia (p<0.05). The Ethiopian harvest DPF had the highest total flavonoid and total phenol content (9.86%, 14.70%) respectively (p<0.05). The mean glycemic index of the dates were 54.2, 52.1, and 55.0 (i.e. low GI food) for Ethiopian, Dubai, and Saudi Arabia harvest DPFs (p>0.05), respectively. The present study demonstrated the nutritional and physical quality and potential of Ethiopian DPF, which has low production and consumption in the country. | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/30439 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Date Palm Fruits | en_US |
| dc.subject | Nutritional Compositions | en_US |
| dc.subject | Physical Characteristics | en_US |
| dc.subject | Antioxidant Activity | en_US |
| dc.title | Physico Chemical Characteristics of Ethiopian Date Palm Fruit as Compared to Imported Date Palm Fruits from Dubai and Saudi | en_US |
| dc.type | Thesis | en_US |