https://repository.sustech.edu/handle/123456789/26823 2026-04-09T01:15:47Z 2026-04-09T01:15:47Z Kadam, Rabha, M. G. Yassin2, Atif, A. A. Abdel-Rahim, Awad M. https://repository.sustech.edu/handle/123456789/26837 2022-02-08T11:48:36Z 2021-06-01T00:00:00Z

Photochemical Screening, Proximate Analysis and Peroxide Value of Leaves and Fruits of the tree Cassia fistula (L) Kadam, Rabha, M. G.; Yassin2, Atif, A. A.; Abdel-Rahim, Awad M. Although, the World Health Organization has recommended the use of traditional medicine, only a limited number of medicinal plants have received detailed scientific scrutiny. Thereby this area should be comprehensively investigated. The tree Cassia fistula is used extensively in various parts of the world against a wide range of ailments, the synergistic action of its metabolite production being most probably responsible for the plant’s beneficial effects. This study investigated a photochemical screening, proximate analysis, and peroxide value in leaves and fruits of Cassia fistula. Qualitative screening for photochemical showed the presence of saponins, tannins, flavonoids, alkaloids, and sterols. Proximate analysis of the leaves showed 5.25% moisture, 12.0% ash, 12.39% total protein, 19.63%, crude fiber, 9.38% crude fat, 41.33%, total carbohydrate, 299.39 calorific value, and 0.76: 1.0 fat: protein. Proximate analysis of the fruits showed 3.20% moisture, 4.93% ash, 16.62% total protein, 7.48% crude fiber, 3.06% crude fat, 64.6% total carbohydrate, 352.82 calorific value, and 0.18:1.0 fat: protein. Peroxide value in 75min with antioxidant showed (0.0) value but without antioxidant, it showed (43.3) value. The innumerable medicinal properties and therapeutic and uses of Cassia Fistula as well as its phytochemical investigations prove its importance as a valuable medicinal plant.

2021-06-01T00:00:00Z Allagabo, Ahmed Hamdi Bilal, Osman Ahmed Almahi, Mohamed Awadalla https://repository.sustech.edu/handle/123456789/26836 2022-02-08T11:53:35Z 2021-06-01T00:00:00Z

The effect of farmers' farming practices on wheat productivity during winter season (2019-2020) (Abu Jen, Alaric and Ras-Elfil Taftish - Al-Jazeera scheme) Allagabo, Ahmed Hamdi; Bilal, Osman Ahmed; Almahi, Mohamed Awadalla The present study was conducted to assess the farming practices of wheat farmers in the Jazeera Scheme and their effect on Wheat productivity per-feddan. To achieve that goal, two questions must be addressed. The first question is: What are farming practices followed by farmers linked to wheat productivity per-feddan? And the second: Are these farming practices related to wheat productivity per-feddan according to research recommendations?. The study focused on the Agricultural Research corporation recommended practices by the wheat research program. That related to land preparation, sowing date, wheat verities, knowledge of sowing depth, Seeds rate per-feddan, number and duration of irrigation, fertilization schedule and type per-feddan, and add time, knowledge of the appropriate time for fertilizing application, productivity per feddan and cost of farming. A social survey method was used. 100 farmers were selected randomly (Due to the limited capacities available for the study). 25 farmers from Abu Jen Taftish, 25 farmers from Alaric Taftish, and 50 farmers from Ras-Elfil Taftish. Some of that Taftish had irrigation problems (thirst) during the season like Abu Jen and Alaric Taftish. And other hadn't irrigation problems during the season like Ras-Elfil Taftish. A questionnaire was used to collect primary data. The data were analyzed by computer through (SPSS) software to extract the frequency and percentage to describe the farming practices followed by the farmers. The Chi-square test and Pearson's correlation were used to test the hypothesis which states: the farming practices followed by the farmers did not affect the wheat productivity during the winter agricultural season 2019-2020. The most important results of the study indicated that the practices followed by the farmers regarding the sowing date, number, and duration of irrigation and fertilization had a decisive positive role on the wheat productivity per-feddan. The study recommended several recommendations to the authorities concerned, the most important of which are: The Ministry of Water Resources and Irrigation and Aljazeera Scheme Administration must provide irrigation water for the planned cultivation areas until the end of the season. With a commitment by farmers to at least 8-9 waterings during the crop life cycle. And must establish demonstration fields to teach farmers the irrigation processes by the Agricultural Extension department in the Scheme. The necessity for Agricultural Extension Department in Aljazeera Scheme to train farmers on how to follow an agricultural cycle and not repeat planting the same crops on the same land, and add Municipal fertilizer every five years to improve soil components.

2021-06-01T00:00:00Z Mekki, Mohammed H. Tesfamariam, Arsiema T. Hadege, Hana F. Tsegai, Heaven G. Melake, Smret D. Abraham, Berhane M. https://repository.sustech.edu/handle/123456789/26835 2022-02-08T11:54:23Z 2021-06-01T00:00:00Z

Effects Of Ethrel And Packaging On De-Greening And Quality Of Sweet Orange Mekki, Mohammed H.; Tesfamariam, Arsiema T.; Hadege, Hana F.; Tsegai, Heaven G.; Melake, Smret D.; Abraham, Berhane M. Sweet orange (Citrus sinensis L.) is one of the highly demanded commercially sub-tropical fruit in the world and it is also an important fruit in Eritrea. Post-harvest handling of sweet oranges in Eritrea is very poor and this has resulted in great losses. Sweet orange of Eritrean lowlands (particularly Zoba Anseba) reach ripe stage while fruits are still green in color. The lack of colored fruits is due to the relatively high temperature in this region during harvesting period, which results to low demand and low prices in the market. The objective of this research was to find out effects of ethrel concentrations and packaging on de-greening (color development) and quality of sweet orange fruits. The experiment was conducted at Horticultural Science laboratory (Dark room) with cooling system (fan) during the period from 14th - 29th of November 2020. Light green sweet orange fruits were treated with ethrel at two concentrations (2ml/l and 3ml/l) and some of them left untreated. On the other hand, fruits were packaged individually in sealed-intact polyethylene (transparent one) and some of them left unpackaged plus a control (untreated and unpackaged). Six treatments were arranged in a Complete Randomized Design (CRD) with three replicates and four fruits/treatment/replicate. Results showed treated sweet orange fruits with ethrel at both concentrations significantly accelerate de-greening of fruit rind and developed uniform orange color compared to control fruits, which remained yellowish green. Packaged fruits recorded minimum weight loss (2.08 %) compared to the highest weight loss of unpackaged (13.13%). No change in TSS (%) and TA during storage of fruits. It is recommended to treat sweet orange fruits with ethrel at (2ml/l) and package them in sealed-intact polymeric polyethylene bag to obtain attractive appearance and good quality.Sweet orange (Citrus sinensis L.) is one of the highly demanded commercially sub-tropical fruit in the world and it is also an important fruit in Eritrea. Post-harvest handling of sweet oranges in Eritrea is very poor and this has resulted in great losses. Sweet orange of Eritrean lowlands (particularly Zoba Anseba) reach ripe stage while fruits are still green in color. The lack of colored fruits is due to the relatively high temperature in this region during harvesting period, which results to low demand and low prices in the market. The objective of this research was to find out effects of ethrel concentrations and packaging on de-greening (color development) and quality of sweet orange fruits. The experiment was conducted at Horticultural Science laboratory (Dark room) with cooling system (fan) during the period from 14th - 29th of November 2020. Light green sweet orange fruits were treated with ethrel at two concentrations (2ml/l and 3ml/l) and some of them left untreated. On the other hand, fruits were packaged individually in sealed-intact polyethylene (transparent one) and some of them left unpackaged plus a control (untreated and unpackaged). Six treatments were arranged in a Complete Randomized Design (CRD) with three replicates and four fruits/treatment/replicate. Results showed treated sweet orange fruits with ethrel at both concentrations significantly accelerate de-greening of fruit rind and developed uniform orange color compared to control fruits, which remained yellowish green. Packaged fruits recorded minimum weight loss (2.08 %) compared to the highest weight loss of unpackaged (13.13%). No change in TSS (%) and TA during storage of fruits. It is recommended to treat sweet orange fruits with ethrel at (2ml/l) and package them in sealed-intact polymeric polyethylene bag to obtain attractive appearance and good quality. Sudan university of science and technology

2021-06-01T00:00:00Z Abdel Mahmoud, Taysser Khalid Ibrahim Elbashir Khogali, Mahmoud1Salwa Mohamed Omer1, Shadia Abdoelatti https://repository.sustech.edu/handle/123456789/26834 2022-02-08T11:55:09Z 2021-06-01T00:00:00Z

Evaluation of antioxidant activities and total phenolic contents of selected Sudanese medicinal plants Abdel Mahmoud, Taysser Khalid Ibrahim; Elbashir Khogali, Mahmoud1Salwa Mohamed; Omer1, Shadia Abdoelatti Antioxidant activities of methanol and water extracts of Cymbopogon proximus aerial parts, Ocimum basilicum leaves and Tribulus terrestris fruits were evaluated using free radical scavenging activity of 1, 1-diphenyl-2-picrylhydrazyl radical (DPPH) and total antioxidant capacities (TAC) by the phosphomolybdenum method. The total phenolic, flavonoid and tannin contents for these extracts were estimated and thereafter were analyzed for their correlation with antioxidant activities. Correlation analysis between the values of DPPH% and TAC revealed a significant correlation with (r=0.96; P=0.002) indicates the viability of the two models for evaluating antioxidants from medicinal plants. It was also observed that there were strong relationships between antioxidant activities and total phenols with higher values observed with water extract(r=0.994 and r= 0.996) with RSA% and TAC respectively. A significant correlation between total phenolic contents and flavonoids was found with (r=0.996; P=0.000). The study findings revealed that O. basilicum methanol extract of the leaves displayed powerful antioxidant activity in the two assay models with (482.25±0.08mg AA Eq/l ) for TAC and (80±0.01%) for RSA%, followed by the plant water extract, while C. proximus showed moderate activities for its two extracts compared to pyrogallate(PRG) as standard compounds, whereas T. terrestris showed the lowest antioxidant activity. Among screened plant materials, remarkable high phenolic and flavonoid contents were found in O. basilicum leaves methanol extract (14.56±0.071mg Gallic acid Eq/g) and (19.03±0.03 mg Querectin E/g) on the basis of dry matter respectively, which contributed to its high antioxidant activity. These findings may indicate that the plant can provide protection against free radicals induced disorders and oxidative stress.

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