Author(s): Munzir Omer Mohammed, Alrasheed A W Mohammed, Hanaa S Boshra, Salah Elnaiem Mohammed, Muzamil Hassaballa Abdelmula
This study was conducted to compare proximate chemical composition, metals contents and some functional properties in three parts of Grewia tenax (forssk) fiori fruits of the two Sudanese varieties of south Darfur and north Kordofan regions. Results on moisture, total ash, crude fiber, crude protein, crude fat and carbohydrate contents where in the range between 5.91-5.33, 1.67-4.41, 7.82-15.27, 3.71-7.85, 0.17-8.81, 58.12-77.88 g/100 g DM, respectively, some significant differences (p˂0.05) were found between the two varieties in the fruits part as crude fiber and protein contents, since the north Kordofan fruits variety had higher values of 13.61% and 7.85% respectively, the pulps of the two varieties were significantly (p˂0.05) differ on the content of the fiber and carbohydrate, with the highest carbohydrate content value of 77.88% for the south Darfur variety pulps, the seeds of the south Darfur variety had given lower content values for ash 4.03%, protein 7.04% and fat 8.53%, further there were significant differences (p˂0.05) in mineral contents as the south Darfur variety fruits had higher content values of Ca 89.60, Mg 50.70, Fe 25.60, Zn 4.80, Cu 0.44 and Mn 0.71 (mg/100 g) while the north Kordofan variety fruit had higher values of Na 19.50 (mg/100 g), but no significant difference (p˃0.05) was observed between the two varieties on the K contents of the fruit which had the highest contents of 810.40 and 812.70 (mg/100 g) for south Darfur and north Kordofan varieties respectively, on comparison the pulps of the two varieties, the results showed that south Darfur variety had significant (p˂0.05) higher contents values of Ca 85, Mg 59.30, Na 49.60, Cu 0.38 and Mn 0.41 (mg/100 g), likewise the results showed that south Darfur variety seeds had higher values of Ca 138.7, Mg 30.2, Na 30 and Fe 14.3 (mg/100 g) whilst north Kordofan variety had higher content of Mn value of 0.39 (mg/100 g), the obtained results of WAC and OAC showed that there were no significant difference between the two varieties (p˃0.05) in the WAC and OAC values, pulps of the two varieties had the highest WAC values 3.21 and 3.13 (ml/g) for south Darfur and north Kordofan varieties respectively, whereas fruits of the two varieties had recorded the highest OAC values 1.36 and 1.40 (ml/g) for south Darfur and north Kordofan varieties respectively, the study indicated that there was significant differences between the two varieties on some proximate or mineral compositions and each variety have an individual features to be used in certain food industries or as complementary diet with theirs good functional properties and according to its proximate compositions and mineral contents.
