Relevant bibliographies by topics / Acacia seyal

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Academic literature on the topic 'Acacia seyal'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Acacia seyal"

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Shehu, Aishatu, Bishio Anyip, and Mohammed Garba Magaji. "Antidepressant effect of methanol root bark extract of Acacia seyal Del. (Fabaceae): Possible involvement of the inflammatory pathway." Tropical Journal of Pharmaceutical Research 19, no. 7 (November 17, 2020): 1459–64. http://dx.doi.org/10.4314/tjpr.v19i7.18.

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Purpose: To study the involvement of inflammatory pathways in the antidepressant activity of Acacia seyal in mice.Methods: The median lethal dose (LD50) of the extract Acacia seyal (AS) was determined using OECD guideline 425. The antidepressant activity of AS was assessed against BCG (0.2 mg/kg, ip)-induced depression in mice using Tail suspension test (TST) and open field test (OFT) at 4, 24 and 48 hours post BCG administration.Results: The median lethal dose (LD50) for the extract was > 5000 mg/kg orally. The extract AS at all tested doses (250 – 1000 mg/kg) significantly (p ≤ 0.001) decreased the duration of immobility in TST but increased the number of line crossing in OFT post-BCG.Conclusion: The antidepressant activity of the methanol root bark extract of Acacia seyal in mice may involve an inflammatory mechanism. Thus, the extract of Acacia seyal may be suitable for the management of depression in humans resistant to other conventional antidepressant agents. However, further studies are required to ascertain this Keywords: Depression, Acacia seyal, Tail suspension test, Open field test, Bacillus Calmette-Guerin
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Elgailani, Isam Eldin Hussein, and Christina Yacoub Ishak. "Determination of Tannins of Three Common Acacia Species of Sudan." Advances in Chemistry 2014 (September 17, 2014): 1–5. http://dx.doi.org/10.1155/2014/192708.

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The objective of this study is to analyze and compare tannins of three common Acacia species of Sudan, since vegetable tannins are important in leather industry. Acacia nilotica and Acacia seyal samples were collected from Sunt Forest in Khartoum State, while Acacia senegal samples were collected from the Debabat Forest in South Kordofan State. Bark samples from bulk collections of the three Acacia species were extracted with boiled deionized water. The amount of tannins present in these bulk samples was determined by Folin-Denis method for total phenolic materials, followed by precipitation with hide-powder. The difference between the amount of phenolic materials present before and after addition of hide-powder represents the amount of tannins present. The percentage of tannins in the leaves, bark, and mature and immature fruits of collections of individuals of Acacia species was estimated; mature and immature fruits of Acacia nilotica contain tannins (22.15% and 22.10%, resp.). The leaves of Acacia nilotica and Acacia seyal contain tannins (11.80% and 6.30%, resp.). The barks of Acacia seyal, Acacia nilotica, and Acacia senegal contain tannins (12.15%, 10.47%, and 3.49%, resp.).
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Ali, Sheikheldeen Bushra, Elkheir Mugadam Salih, Muhab S. Hassanien, and AKram H. Mohmmed. "Utilization of Acacia seyal(Talih) bark powder Extract for Manufacture of Upper leather as Alternative Retanning Agent." Journal of Africa Leather and Leather Products Advances 5, no. 1 (August 26, 2019): 27–34. http://dx.doi.org/10.15677/jallpa.2019.v5i1.19.

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This study was conducted at Alfula area which located at longitude 20-28 south and latitude 11-43 north the over all objective of this study were to fill the looser and softer parts of leather in order to produce leathers of more uniform physical properties. This is to investigate that the process will allow for the production of unlined footwear, to improve on the chemical stability of the leather, prompt rapid finishing and delivery to the customer. The plant has been evaluated and reported for application in the retanning of the leather. The process involves extracting the barks of Acacia seyal (Talih) for 1 hour with distilled water (1:10 w/v) at temperature above 80˚C. The Talih extract once was applied during prepared the retanning of wet blue leathers. To determine The efficacy of the pontency and effectiveness of the Acacia seyal (Talih) and extract during the retanning of wet blue leathers when the control and experimental retannage methodologies was applied was determined. The result of Acacia seyal (Talih) retanned compared to Acacia pycnantha(Wattle) retanned leathers. Acacia seyal (Talih) showed good grain tightness and retanned leathers were found to be better than Acacia pycnantha(Wattle) retanned. Further analysis of physical characteristic tests indicated that it can be used as an alternative retanning material
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Mbayngone, Elisée, Serge Mélom, Ali Brahim Béchir, and Pierre Marie Mapongmetsem. "Structure et productivité en gomme des peuplements à Acacia senegal (L) Willd. et Acacia seyal Del. de Massenya au Tchad." Flora et Vegetatio Sudano-Sambesica 20 (December 20, 2017): 3–11. http://dx.doi.org/10.21248/fvss.20.49.

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La connaissance du potentiel et de la productivité d'une ressource est une donnée nécessaire à l'élaboration d'une bonne politique de sa gestion. La structure et la productivité des peuplements à Acacia seyal Del. et à Acacia senegal (L) Willd.ont été étudiées dans les formations naturelles de Massenya au Tchad. Sur la base de 32 placeaux de 900 m2, le diameter et la hauteur de tous les individus d’espèces ligneuses ont été mesurés. Pour des espèces adultes à port arbustif, le diameter est mesuré à 50 cm du sol. Les individus juvéniles sont simplement comptés et ranges en classe de hauteur. L’étude de la structure des peuplements et de deux espèces d’Acacia a été réalisée à travers le nombre de tiges à l’hectare et les classes de diamètre. L’Indice de Valeur d’Importance (IVI) a été utilisée pour apprécier la prédominance des espèces sur le site. La productivité des peuplements en gomme a été évaluée en fonction de la production moyenne d’un arbre qui était de 250 g. Les peuplements à Acacia de Massenya sont très denses (619 ± 269 tiges/ha), mais à surface terrière faible (7,10 ± 1,20 m²/ha) due à un grand nombre d’individus de petit diamètre (11,1 ± 2,2 cm). Ce sont des peuplements généralement arbustif (hauteur de 5,2 ± 0,9 m) avec un bon potentiel de juvéniles (408 ± 267 tiges/ha) pouvant se régénérer naturellement. Toutefois, Acacia seyal semble plus apte à coloniser d’autres milieux qu’Acacia senegal. Sur les sept espèces qui prédominent sur le site, Acacia seyal et Acacia senegal réalisent des IVI plus élevés (respectivement 79 et 54). Les espèces à bon potentiel de régénération sont Acacia seyal (65 ± 8 juv./ha), Acacia senegal (58 ± 10 juv./ha) et Guiera senegalensis (51 ± 8 juv./ha). La production annuelle de gomme est estimée à 56 ± 6 kg/ha de gomme friable (à Acacia seyal) et 41 ± 5 kg/ha de gomme dure (à A. senegal).
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Andres-Brull, Marina, Ishragha G. Abdalla, Jesus Cirre, James Edwards, Mohammed E. Osman, Glyn O. Phillips, and Saphwan Al-Assaf. "Studies on acacia gums: Part VII effect of exudates form and tree age on the characteristics of Acacia seyal var. seyal and Acacia seyal var. fistula." Food Hydrocolloids 45 (March 2015): 279–85. http://dx.doi.org/10.1016/j.foodhyd.2014.11.028.

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Ahmed, Abdalla, Abdelmalik Abdelmalik, Thobayet Alsharani, Bdulaziz Al-Qarawi Al-Qarawi, and Ibrahim Aref. "Response of growth and drought tolerance of Acacia seyal Del. seedlings to arbuscular mycorrhizal fungi." Plant, Soil and Environment 66, No. 6 (June 23, 2020): 264–71. http://dx.doi.org/10.17221/206/2020-pse.

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Considering the improvement of acacia species growth in arid and semi-arid environment, a pot experiment was conducted to evaluate the role of arbuscular mycorrhizal fungi (AMF); Funneliformis mosseae (syn. Glomus mosseae), Rhizophagus intraradices (syn. Glomus intraradices) and Claroideoglomus etunicatum (syn. Glomus etunicatum) on growth and drought tolerance of Acacia seyal Del. seedlings under drought cycles (7, 14, 21 and 28 days). AMF-inoculated seedlings showed a clear colonisation percentage (36–68%). AMF treatment significantly improved seedlings shoot and root growth under all drought cycles compared to non-AMF control seedlings. Moreover, AMF treatment enhanced seedlings drought resistance by increasing root surface area (root length increased by 483.76% and root tips number increased by 1 463.94% under 28 days of drought cycle), there was a strong linear relation between proline accumulation, AMF and drought stress (proline content decreased in treated seedlings by 31.3% and 14.3% and increased by 97.5% and 80.4% in untreated seedlings under drought cycles of 21 and 28 days, respectively). In conclusion, the AMF inoculation improved growth and enhanced drought tolerance of A. seyal seedlings and can be used as a natural biostimulator for acacias seedlings establishment in arid areas.
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Nie, Shao-Ping, Cathy Wang, Steve W. Cui, Qi Wang, Ming-Yong Xie, and Glyn O. Phillips. "The core carbohydrate structure of Acacia seyal var. seyal (Gum arabic)." Food Hydrocolloids 32, no. 2 (August 2013): 221–27. http://dx.doi.org/10.1016/j.foodhyd.2012.12.027.

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Desta, Hailu Manaye, and Cherinet Seboka Ambaye. "Determination of Energy Properties of Fuelwood from Five Selected Tree Species in Tropical Highlands of Southeast Ethiopia." Journal of Energy 2020 (March 1, 2020): 1–7. http://dx.doi.org/10.1155/2020/3635094.

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The aim of this study was to determine the energy properties of fuelwood samples which are preferred and used by local communities. The study used both cross-sectional survey of households and field survey. Systematic household sampling was used for household and random sampling for tree species. The chosen sample sizes for households in the study were 134. The cross-sectional survey of the local community on orderly preference of fuelwood consumption listed Acacia nilotica, Acacia etbaica, Olea africana, Acacia seyal, and Acokanthera schimperi. However, for the laboratory result and detail principal component analysis (PCA) of tree species in their density and moisture, ash, volatile, and fixed carbon contents, Olea africana was strongly recommended for fuelwood preference followed by Acacia nilotica, Acacia etbaica, Acacia seyal, and Acokanthera schimperi. The identification of community preference and scientific assessment on fuelwood consumption on different tree species will enhance the expansion of their plantation program in the region.
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Duponnois, R., T. K. Tabula, and P. Cadet. "Étude des interactions entre trois espèces d'Acacia (Faidherbia albida Del., A. seyal Del., A. holosericea A Cunn. ex G. Don) et Meloidogyne mayaguensis au Sénégal." Canadian Journal of Soil Science 77, no. 3 (August 1, 1997): 359–65. http://dx.doi.org/10.4141/s96-086.

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The susceptibility of three Acacia species used in Senegal (F. albida Del., A. seyal Del. and A. holosericea A Cunn. Ex G. Don) to M. mayaguensis is studied after inoculation of the nematode at different stages of seedling development (seedling stage, cotyledon and young leaves). The observation of giant cells induced by M. mayaguensis on all three Acacia species testifies to their susceptibility to the nematode. However the pathogenic effect of M. mayaguensis on the growth of A. holosericea and A. seyal is more important than on F. albida. Moreover, the penetration and the development of the nematode is greater with these two Acacia species. The susceptibility of Acacia decreased when nematodes are inoculated on older seedlings. These results indicate that some Acacia sp. used to restore soil fertility will multiply parasites susceptible to infest subsequent crops. Key words:Acacia spp., Meloidogyne mayaguensis, Rhizobium, pathogenesis, histopathologynot available
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Al-Wasel, Abdelrahman S. "Micropropagation of Acacia seyal Del. in vitro." Journal of Arid Environments 46, no. 4 (December 2000): 425–31. http://dx.doi.org/10.1006/jare.2000.0687.

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Dissertations / Theses on the topic "Acacia seyal"

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Hamed, Mohammed Mohammed. "Management of Natural Stands of Acacia seyal Del. variety seyal (Brenan) for Production of Gum Talha, South Kordofan, Sudan." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-69392.

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The present study was conducted in Umfakarin natural forest reserve, South Kordofan, Sudan. The main objective was to investigate the possibility of managing Acacia seyal Del. variety seyal for the production of gum talha. Three stand densities (strata), namely dense, medium, and slight, were distinguished based on the number of trees per hectare. During the sampling phase, the study adopted the method of identifying the competitors (neighboring trees) from the subject one (trees selected for gum production experiments). From the three stand densities, a total of 482 subject trees, covering variable diameter ranges (d= 9-11.5, 13.5-16, 18-20.5 and above 21 cm) were selected, based on the diameter at 0.25 m height (d0.25). In each stratum, competitor trees were identified within a radius equal to the height of subject tree multiplied by a factor (1.25). The diameter at breast height, height to crown base, height, crown radii, and tree coordinates were measured for each of the subject trees and its competitors. Subject trees were exposed to tapping on first of October, the fifteenth of October, and the first of November, using local tools (Sonki and Makmak). Additionally, untapped trees were used as controlling-variables. The initial gum collection was completed fifteen days after the tapping, while the subsequent (7-9 pickings) were done at an interval of fifteen days. Six stand height functions were tested and the results illustrated that the Michailow stand height function was suitable for predicting the height of Acacia seyal in Umfakarin natural forest. The predictive ability of this height function ranged from 19.3% to 24%. The volume function used in this study was able to predict the volume of standing trees with more than 92 percent accuracy. Competition among trees of Acacia seyal was assessed in terms of competition indices. Eight competition indices were quantified using the CroCom program. The relationship between these indices and tree dimensions (diameter at breast height, height and crown diameter) was tested using logarithmic models. Among these indices, the Hegyi_2 index is considered a suitable index to be applied for estimating the degree of competition in natural stands of A. seyal of dense stratum when using diameter at breast height as a predictor. About 70% of the total variability is explained by this logarithmic model. Gum yielded by each subject tree per season was obtained by summing up the gum samples collected from all pickings. Gum production per unit area was also determined. Regression tree, general linear model (GLM) and logistic regression techniques were used for analyzing the obtained data. The results of the study indicated that the gum yield is independent of stand density. Tapping has influence on gum yield. Trees tapped by sonki on the first of October at medium stand density have the highest gum with an average value of about 56 g/tree/season. Significant difference (p = 0.021) was detected between two groups of dates; the first of October and first of November in medium stand density. The results also revealed that the most important variable influencing gum production was found to be diameter at breast height with 23.95 cm threshold. Between 41-53 percent of subject trees produce gum less than 50 g/season. The results indicated that A. seyal species produces a very low quantity of gum talha (3.6-4.8 kg/ha) and for economic reasons, its tapping is not recommended. The findings of the regression analysis revealed to a model which could be used to estimate the yield of gum talha from A. seyal natural stands in the Umfakarin forest, South Kordofan, Sudan. Conducting experiments on the production of gum talha in permanent plot trials in different climatic regions of the Sudan is highly recommended.
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Mohamed, Shawgi Gamal Hanadi. "Investigation of selected wood properties and the suitability for industrial utilization of Acacia seyal var. seyal Del and Balanites aegyptiaca (L.) Delile grown in different climatic zones of Sudan." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-158073.

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Sudan is endowed with a great diversity of tree species; nevertheless the utilization of wood resources has traditionally concentrated on a few species only. Despite of the richness of Sudan in most of basic factors required to establish forest based industries it still almost entirely dependent on imports to satisfy its needs of the products of such industries. There is an urgent need to assess the suitability of the local fibrous raw materials for industrial utilization, this would not only reduce imports, but they would also provide an economic incentive to the forestry and industrial sectors of Sudan. Sudan has a wide variation of climatic zones, thus; great variations are expected in the anatomical and physical properties between and within species grown in each zone. This variation needs to be fully explored in order to suggest best uses for the species. The present study was carried out to assess the suitability of Acacia seyal var. seyal Del and Balanites aegyptiaca (L.) Delile wood for pulp and paper making (PPM) and flooring industry, as well as to investigate the effect of rainfall zones on selected wood properties. For this purpose, a total of thirty trees per species were collected from four states in Sudan, namely: Blue Nile, North Kordofan, South Kordofan and White Nile. The study areas located in two precipitation zones. Zone one with 273 mm mean annual rainfall, and zone two with 701 mm mean annual rainfall. Wood samples in form of disc were obtained from two heights within each tree, which are 10 % and 90 % from the tree merchantable height. Anatomical, physical and mechanical investigations were conducted in order to test the wood properties of the study species. The studied anatomical properties were: fibre and vessel diameter, lumen diameter and wall thickness. In addition to fibre length and three fibre derived values, namely: flexibility coefficient, Runkel ratio and slenderness ratio. The trend of fiber length from pith to bark was determined. The anatomical composition was described. Wood density was investigated as a main physical property. Basic density as well as air dry density were measured in the current study. Additionally, the density was measured using X-ray densitometry method in order to assess its suitability as a valid tool for the study species density determination. The trend of wood basic density from pith to bark was also determined. Brinell hardness strength was measured in the transverse and radial sections. According to the study results, the fibre length of both species considered as medium (900 -1600 μm). However, Acacia seyal has longer fiber. Acacia seyal wood density considered heavy (≥ 720 kg/m³) while that of Balanites aegyptiaca is medium (500 - < 720 kg/m³). Depending upon the mean values of hardness strength in transverse as well as radial sections, the wood of both species can be classified as very hard (up to 146 N/mm2 hardness strength). Fibre length and wood density for both species followed the increase trend from the pith to the bark. The X-ray densitometry technique is considered as a valid tool for wood density determination for both species. For each species, some wood properties (in mature wood) were significantly affected by the water stress in the drier zone. For instance, Acacia seyal fibre length was negatively affected, while vessel wall thickness, basic density as well as hardness strength of the radial section were positively affected. In case of Balanites aegyptiaca the following properties were affected: vessel dimensions (negatively) and basic density (positively). However, the water stress did not affect Acacia seyal fibre and vessel diameter and lumen diameter, fiber wall thickness, flexibility coefficient, Runkel ratio and hardness strength in transverse section. Balanites aegyptiaca fibre characteristics and hardness strength did not show any response to water stress as well. In general, the overall wood properties of the study species considered compatible for PPM and flooring industry. However, trees growing in the more humid zone are preferable for both industries, due to their lower wood density and longer fibres in case of Acacia seyal and lower density in case of Balanites aegyptiaca.
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Aphibanthammakit, Chutima. "Propriétés interfaciales et émulsifiantes de gomme d'Acacia senegal, Acacia seyal et de leurs fractions." Thesis, Montpellier, SupAgro, 2018. http://www.theses.fr/2018NSAM0029/document.

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Les gommes d’Acacia (AG, E414EC) sont largement utilisées par ses propriétés stabilisantes, émulsifiantes et filmogènes. Le but de ce projet de thèse consiste à caractériser les propriétés interfaciales et émulsifiantes des gommes d’Acacia. Les études des propriétés interfaciales liquide-liquide ont confirmé que l’A. senegal permettait une plus grande diminution de la tension interfaciale et une formation plus rapide de films à l’interface. Ceci est en accord avec sa teneur plus élevée en AGP de masse molaire élevée riche en protéine, la meilleure accessibilité de la partie protéique et la plus grande flexibilité moléculaire par rapport à A. seyal. De même, ces avantages biochimiques et structuraux de l’A. senegal se sont avérés être impliqué dans les propriétés émulsifiantes des gommes. Les résultats d'une approche innovante visant à contrôler la teneur en AGP de masse molaire élevée riche en protéines dans le milieu et la concentration totale de gomme par le mélange de deux fractions bien caractérisées isolées chez A. senegal ont confirmé la synergie fonctionnelle entre la quantité des AGP de masse molaire élevée riche en protéines et la concentration totale en gomme. De plus, en présence de quantités élevées d'AGP de masse molaire élevée riches en protéines, les émulsions étaient stables contre la floculation/coalescence en raison de la forte teneur en protéines permettant une répulsion électrostatique entre les gouttelettes et la viscosité apparente élevée du milieu. Celles-ci étaient en accord lorsque les propriétés émulsifiantes de A. senegal et A. seyal ont été comparées. En effet, A. senegal contient une plus grande quantité d'AGP de masse molaire élevée riches en protéines et d'acides uroniques, et sa dispersion présente une viscosité apparente supérieure à celle d'A. seyal. En outre, lorsque les gommes d'Acacia étaient utilisées sous forme de films séchés, la grande teneur en AGP riches en protéines de masse molaire élevée et la bonne accessibilité des fragments protéiques d'A. senegal permettaient aux films d’avoir une surface homogène lisse avec des propriétés hydrophobes caractéristiques. En revanche, les films de A. seyal étaient irréguliers et constitués d'une organisation répétitive comme de nombreuses grosses particules uniformément réparties sur la surface par rapport au faible degré de ramification, une teneur élevée en arabinose favorisant les liaisons hydrogènes intra et inter moléculaires et une forte capacité d'hydratation chaînes polysaccharidiques de A. seyal. Selon les résultats, cette thèse apporte de nouvelles connaissances sur la relation entre la composition biochimique, les propriétés structurales et physico-chimiques, pour la première fois, dans les deux aspects de la gomme, à savoir sous forme de dispersion liquide et de films séchés.Mots clés : gomme d’Acacia, propriétés interfaciales et émulsifiantes, arabinogalactane-protéines, arômes
Acacia gums (AG, E414 EC) are widely used for its stabilizing, emulsifying and film-forming properties. The aim of this project is to characterize the interfacial and emulsifying properties of Acacia gums. The main results from liquid-liquid interfacial properties study confirmed that A. senegal showed a faster decrease of interfacial tension and a more rapid interfacial film formation. These were in agreement to its greater content of high molar mass-protein AGPs content, the more accessibility of proteinaceous moieties, and the higher molecular flexibility compared to A. seyal. In the same vein, these biochemical and structural advantages of A. senegal were found to be involved in the emulsifying properties of gums. The results from an innovative approach aiming to control high molar mass protein-rich AGPs content in bulk and the total concentration of gum by mixing two well characterised fractions isolated from A. senegal confirmed the functional synergism between the amount of high molar mass protein-rich AGPs and the total gum concentration. Moreover, in the presence of high molar mass protein-rich AGPs in high amount, the emulsion became stable to flocculation/coalescence due to the great protein content allowing electrostatic repulsion between droplets and the high bulk apparent viscosity. These were in agreement when the emulsifying properties of A. senegal and A. seyal were compared. Indeed, A. senegal containing a greater amount of high molar mass protein rich AGPs and uronic acids and its dispersion having a higher apparent viscosity than A. seyal allowing the former to form emulsion with a more stability. Besides, when Acacia gums were used in the form of dried film, the great content of high molar mass protein-rich AGPs and the good accessibility of proteinaceous moieties of A. senegal allowed the smooth homogeneous surface with a hydrophobic characteristic properties of A. senegal dried films. In contrast, A. seyal films was irregular and composed of a repetitive organization as numerous large particle uniformly distributed on surface in the relation to the low degree of branching, high arabinose content favoring intra and inter molecular hydrogen bonding and high hydration ability causing aggregation of polysaccharide chains of A. seyal. According to the results, this thesis brings new knowledge of the relationship between biochemical composition, structural and physicochemical properties, for the first time, across both aspects of gum, i.e. in the form of liquid dispersion and dried films.Keywords: Acacia gums, interfacial and emulsifying properties, arabinogalactan proteins, aroma compounds
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Gashua, Ibrahim Babale. "An investigation of the molecular structure, composition and biophysical properties of gum Arabic." Thesis, University of Wolverhampton, 2016. http://hdl.handle.net/2436/608784.

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Acacia senegal and Acacia seyal are important agroforestry cash crops indigenous to several countries of sub-Saharan Africa, including Nigeria. The gum exudate produced by these species is termed gum Arabic which is an approved food additive (E414), primarily used as an emulsifier. In the current study, the molecular structure, composition and biophysical properties of gum samples harvested from mature trees of Acacia senegal at two specific ecolocations in Nigeria (NG1 and NG2), have been investigated together with two previously characterised gum samples harvested from A. senegal and A. seyal originating from Sudan. The monosaccharide sugar composition analyses have shown that the A. seyal gum had a lower rhamnose and glucuronic acid content than the A. senegal gum, but had higher arabinose content. No significant difference was observed between the sugar composition of the A. senegal gums from Sudan and Nigeria. The total protein content of the Nigerian gum samples were significantly higher than recorded for the Sudanese samples. The principal amino acids present in all the gum samples are hydroxyproline, serine, aspartame, threonine and proline which is in agreement with literature values. The hydrodynamic size of the molecules present in the gums was studied using dynamic light scattering and it was found that molecular association occurred in solution over time which was inhibited in the presence of an electrolyte. The comparison of droplet size distribution for emulsions prepared with A. senegal (NG1) and A. seyal gum samples showed that A. senegal sample was a better emulsifier than the A. seyal. Multilayer adsorption of the samples onto polystyrene latex particles was observed, which resulted in an increase in thickness of the adsorbed layer as a consequence of the interaction between the protein and carbohydrate within the molecules adsorbed on the emulsion surface. Preliminary analyses of the gums using transmission electron microscopy showed the presence of varied macromolecules, ranging in size from ~12 - ~60 nm. Immuno-gold negative staining (using JIM8 monoclonal antibody) indicated clear labelling of arabinogalactan-proteins present in the gums harvested from A. senegal, the labelling of the A. seyal sample was inconclusive. In summary, the data presented represents the first detailed comparison of the structure, composition and physicochemical characteristics of Nigerian Acacia gum exudates versus Sudanese samples (main global supplier) which have shown that gum obtained from Nigerian sources is a viable alternative to ensure future supply of this valuable natural resource.
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Hamed, Mohammed Mohammed [Verfasser], Heinz [Akademischer Betreuer] Röhle, and Mohamed El Mukhtar [Akademischer Betreuer] Ballal. "Management of Natural Stands of Acacia seyal Del. variety seyal (Brenan) for Production of Gum Talha, South Kordofan, Sudan / Mohammed Hamed Mohammed. Gutachter: Heinz Röhle ; Mohamed El Mukhtar Ballal. Betreuer: Heinz Röhle." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://d-nb.info/1067189203/34.

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Mekbib, SB Regnier Thierry J. C. Sivakumar Dharini Korsten Lise, TJC Regnier, D. Sivakumar, and L. Korsten. "Evaluation of Ethiopian plant extracts, Acacia seyal and Withania somnifera, to control green mould and ensure quality maintenance of citrus (Citrus sinensis L.)." Cirad/EDP Sciences, 2009. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001695.

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Abstract Introduction. Green mould, Penicillium digitatum (Pers.: Fr.) Sacc., causes economically important postharvest disease in citrus. Materials and methods. Ethiopian plant extracts of Acacia seyal (Del. Var. Seyal) and Withania somnifera (L.) Dual were used to test the control of green mould in wound-inoculated fruit, stored for 21 d at 7 °C and at > 85% RH. The chemical compositions of the two extracts were determined using high-performance chromatography. Thereafter, freshly harvested (naturally infected) fruit were subjected to different postharvest treatments and stored for 50 d to investigate the effects of the two plant extracts on fruit quality parameters. Treatments included (pre-wax + leaf extracts), (wax + leaf extracts incorporated into wax, Citrosol A®), (leaf extract alone), (fruit washed in chlorinated water at 5.25%), (untreated fruit) and (commercially treated fruit). Results. Extracts of A. seyal and W. somnifera reduced the incidence of green mould by 56.1% and 50%, respectively, in wound-inoculated fruit. A. seyal extract contained a high concentration of gallic acid (60.3 mg·mL–1) whilst W. somnifera contained low concentrations of caffeic acid (8.7 mg·mL–1), salicylic acid (6.3 mg·mL–1) and 3,4 dihydroxy benzoic acid (3.8 mg·mL–1). Green mould was absent in naturally infected fruit subjected to (pre-wax + leaf extracts), (wax mixed with leaf extracts) and (leaf extracts) treatments. (Pre-wax + leaf extracts) and (wax mixed with leaf extract) treatments significantly reduced weight loss; retained firmness and colour; and they maintained eating qualities and a maturity index (SSC/TA) similar to commercial treatment. Conclusion. Both extracts of A. seyal and W. somnifera showed potential to be used as an alternative in combined applications with wax application under low temperature storage to replace synthetic fungicides, to ultimately control green mould and retain overall fruit quality.
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Mohamed, Shawgi Gamal Hanadi [Verfasser], Claus-Thomas [Akademischer Betreuer] Bues, Andreas [Akademischer Betreuer] Roloff, and František [Akademischer Betreuer] Hapla. "Investigation of selected wood properties and the suitability for industrial utilization of Acacia seyal var. seyal Del and Balanites aegyptiaca (L.) Delile grown in different climatic zones of Sudan / Hanadi Mohamed Shawgi Gamal. Gutachter: Claus-Thomas Bues ; Andreas Roloff ; František Hapla." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://d-nb.info/1069092304/34.

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Musa, Ali E., G. A. Gasmelseed, E. F. Faki, H. E. Ibrahim, O. A. Haythem, M. A. Manal, and S. B. Haythem. "Application of Vegetable Bark Extract as Alternative Retanning Agent for Leather Processing - 12." Verein für Gerberei-Chemie und -Technik e. V, 2019. https://slub.qucosa.de/id/qucosa%3A34217.

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Content: The retanning process is considered as one of the most important processes in leather making, and it plays an important role in the modern leather industry. The fibre structure of hide or skin is not uniform and the retanning agent improves the properties of leather by filling the empty part of wet-blue leather. It could contribute to further stabilization of collagen fibres and give better handle properties to leather such as fullness and elasticity. In a conventional leather retanning process, retanning materials used include both inorganic salt like basic chromium salt, zirconium salt and aluminum salt and organic materials such as vegetable tanning agent, synthetic tanning agent, resin retanning and aldehyde tanning agent. Extract from the barks of Acacia seyal (Talh bark), widely distributed in Sudan, has been evaluated for its utilization in the retanning of the leather and presented in this paper. Barks of talh have been extracted for 1 hour with distilled water (1:10 w/v) at temperature above 80˚C. The talh extract prepared has been used for the retanning of wet blue leathers. The effectiveness of talh extract in retanning of wet blue leathers has been compared with mimosa retanning. The organoleptic properties of the leathers viz. softness, fullness, grain smoothness, grain tightness (break), general appearance, uniformity of dyeing of talh retanned leather have been evaluated in comparison with mimosa retanned leathers. Talh retanning resulted in leathers with good grain tightness. Dyeing characteristics of talh retanned leathers have been found to be better than mimosa retanned leathers. Also physical strength characteristic and shrinkage temperature and economic viability were noted. The effluent arising from this retanning system has been analyzed for its environmental impact. Take-Away: Organoleptic properties physical strength characteristic Shrinkage temperature
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Sall, Pape Ndièngou. "Étude écophysiologique de eucalyptus camaldulensis Dehn. En zone Sahelo-Soudanienne : L'exemple du parfob." Nancy 1, 1988. http://www.theses.fr/1988NAN10010.

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L'introduction de eucalyptus camaldulensis, essence exotique à croissance rapide et transpiration intense, dans une zone marginale déficitaire en eau, comporte des risques d'épuisement des réserves hydriques du sol et de mauvaise adaptation. Après une étude du fonctionnement hydrique en vases de végétation, une étude comparée des consommations en eau par la méthode du bilan hydrique simplifié, de la plantation d'eucalyptus de la forêt naturelle à acacia et de la végétation herbacée, a permis de conclure qu'un reboisement par l'eucalyptus à but de production en zone sahelo-soudanienne, a toutes les chances d'aboutir à un échec
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Books on the topic "Acacia seyal"

1

Bodman, Vandenbergh Lydia, and Shettleworth Earle G, eds. Revisiting Seal Harbor and Acadia National Park. Dover, N.H: Arcadia, 1997.

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2

Vanderbergh, Lydia, and Jr Earl Shettleworth. Revisiting Seal Harbor and Acadia National Park (ME) (Images of America). Arcadia Publishing, 1997.

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Book chapters on the topic "Acacia seyal"

1

Azimova, Shakhnoza S., and Anna I. Glushenkova. "Acacia seyal Deline." In Lipids, Lipophilic Components and Essential Oils from Plant Sources, 556. London: Springer London, 2012. http://dx.doi.org/10.1007/978-0-85729-323-7_1781.

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Bussmann, Rainer W., Narel Y. Paniagua-Zambrana, and Grace N. Njoroge. "Acacia drepanolobium Harmes ex Sjostedt Acacia nilotica (L.) Willd. ex Delile Acacia senegal (L.) Willd. Acacia seyal Delille Acacia tortilis (Forssk.) Hayne Fabaceae." In Ethnobotany of the Mountain Regions of Africa, 1–13. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-77086-4_4-1.

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Bussmann, Rainer W., Narel Y. Paniagua-Zambrana, and Grace N. Njoroge. "Acacia drepanolobium Harmes ex Sjostedt Acacia nilotica (L.) Willd. ex Delile Acacia senegal (L.) Willd. Acacia seyal Delille Acacia tortilis (Forssk.) Hayne Fabaceae." In Ethnobotany of the Mountain Regions of Africa, 81–93. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-38386-2_4.

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Kedir, Miftah F. "Pyrolysis Bio-oil and Bio-char Production from Firewood Tree Species for Energy and Carbon Storage in Rural Wooden Houses of Southern Ethiopia." In African Handbook of Climate Change Adaptation, 1313–29. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_183.

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AbstractThe need for emission reduction for climate management had triggered the application of pyrolysis technology on firewood that yield bio-oil, bio-char, and syngas. The purpose of present study was to select the best bio-oil and bio-char producing plants from 17 firewood tree species and to quantify the amount of carbon storage. A dried and 1 mm sieved sample of 150 g biomass of each species was pyrolyzed in assembled setup of tubular furnace using standard laboratory techniques. The bio-oil and bio-char yields were 21.1–42.87% (w/w) and 23.23–36.40% (w/w), respectively. The bio-oil yield of Acacia seyal, Dodonea angustifolia, Euclea schimperi, Eucalyptus globulus, Casuarina equisetifolia, and Grevillea robusta were over 36% (w/w), which make the total yield of bio-oil and bio-char over 62% (w/w) of the biomass samples instead of the 12% conversion efficiency in traditional carbonization. The calorific value of firewood was 16.31–19.66 MJ kg–1 and bio-oil was 23.3–33.37 MJ kg–1. The use of bio-oil for household energy and bio-char for carbon storage reduced end use emission by 71.48–118.06%, which could increase adaptation to climate change in comparison to open stove firewood by using clean fuel and reducing indoor pollution.
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Diouf, D., R. Samba-Mbaye, D. Lesueur, A. Bâ, B. Dreyfus, P. de Lajudie, and M. Neyra. "Genetic Diversity of Acacia seyal Del. Rhizobial Populations Indigenous to Senegalese Soils in Relation to Salinity and pH of the Sampling Sites." In Biological Nitrogen Fixation: Towards Poverty Alleviation through Sustainable Agriculture, 129–30. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8252-8_47.

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Awad, S. S., A. A. Rabah, H. I. Ali, and T. E. Mahmoud. "Acacia Seyal Gums in Sudan: Ecology and Economic Contribution." In Gum Arabic, 3–11. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-812002-6.00001-4.

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