Certain functional properties of gums derived from some lesser known tropical legumes (Afzelia africana, Detarium microcarpum andMucuna flagellipes)

1995 ◽  
Vol 48 (1) ◽  
pp. 55-63 ◽  
Author(s):  
J. C. Onweluzo ◽  
K. C. Onuoha ◽  
Z. A. Obanu
Keyword(s):  
Functional Properties ◽  
Detarium Microcarpum ◽  
Tropical Legumes ◽  
Afzelia Africana

scholarly journals EFFICACITÉ DES AIRES PROTÉGÉES DANS LA CONSERVATION D’HABITATS FAVORABLES PRIORITAIRES DE LIGNEUX DE VALEUR AU BÉNIN

2017 ◽  
Vol 328 (328) ◽  
pp. 67
Author(s):  
Sessi Gilles Christian Adjahossou ◽  
Gérard Nounagnon Gouwakinnou ◽  
Dèhouégnon Thierry Houehanou ◽  
Akoeugnigan Idelphonse Sode ◽  
Alain Sèakpo Yaoitcha ◽  
...  
Keyword(s):  
Detarium Microcarpum ◽  
Base De Données ◽  
Khaya Senegalensis ◽  
Prosopis Africana ◽  
Afzelia Africana ◽  
Daniellia Oliveri

L’objectif  de  cette  étude  est  d’évaluer au Bénin l’efficacité du réseau des aires protégées dans la conservation des habi- tats favorables et prioritaires de certaines espèces ligneuses d’importance socio-éco- nomique. Il s’agit de Afzelia africana, Anogeissus leiocarpa, Burkea africana, Daniellia oliveri, Detarium microcarpum, Prosopis africana et Khaya senegalensis. Les techniques basées sur le principe d’en- tropie maximale (Maxent) combinées avec les SIG ont été utilisées pour projeter les habitats favorables de ces sept espèces ; le logiciel Zonation a été utilisé pour la modé- lisation des habitats prioritaires. Les points de présence des espèces ont été collectés et associés aux variables bioclimatiques dérivées de la température mensuelle et de la pluviométrie obtenues à partir de la base de données en ligne de AfriClim, ainsi qu’à la variable édaphique (sol). En terme de déterminisme environnemental, les variables bioclimatiques telles que l’écart diurne moyen de la température  (Bio2), les précipitations annuelles moyennes (Bio12), l’évapotranspiration potentielle (ETP) et la variable biophysique sol, sont prédictives pour les distributions des sept espèces. Les habitats protégés plus favo- rables aux sept essences dans la zone gui- néenne commencent aux limites de la forêt classée de Kétou (7°43’N), dans la zone soudano-guinéenne, à partir de la lati- tude de la forêt classée d’Agoua (8°30’N), et dans la zone  soudanienne  à partir  de la latitude de la Pendjari (10°35’N).  Pour  la conservation des habitats prioritaires, l’étude de représentation révèle que, dans les zones soudaniennes (9°75’-12°27’N), guinéenne (6°50’-7°40’N) et soudano-gui- néenne, les aires protégées sont respec- tivement efficaces, peu efficaces et non efficaces.

A comparative study of some functional properties of Afzelia africana and Glycine max flours

1995 ◽  
Vol 54 (1) ◽  
pp. 55-59 ◽  
Author(s):  
Jane C Onweluzo ◽  
Kris C Onuoha ◽  
Zak A Obanu
Keyword(s):  
Glycine Max ◽  
Comparative Study ◽  
Functional Properties ◽  
Afzelia Africana

Phytochemical screening and antimicrobial studies of afzelia africana and detarium microcarpum seeds

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Antimicrobial Activities ◽  
Gram Negative Bacteria ◽  
Physiological Effects ◽  
Disc Diffusion ◽  
Phytochemical Screening ◽  
Antimicrobial Studies ◽  
Detarium Microcarpum ◽  
Phytochemical Constituents ◽  
Afzelia Africana ◽  
Seed Extracts

The aim of this study was to probe the phytochemical constituents and the antimicrobial activities of Afzelia africana and Detarium microcarpum seed endosperms. The results obtained from the phytochemical screening indicated that tannins, flavonoids, fatty acids, phenol, steroids, saponins and alkaloids were present. The seed extracts were tested against eight pathogenic organisms comprising of two Gram positive and two Gram negative bacteria; two fungi and two viruses using Agar and Disc diffusion methods. The plant extracts exhibited antimicrobial activities against all the tested organisms. This investigation therefore, suggests the incorporation of Afzelia africana and Detarium microcarpum seeds into human diets as they are rich in medicinal agents that could trigger great physiological effects. It also authenticates their use as soup thickeners in eastern Nigeria and in the production of snacks.

Volatile constituents of hydrocolloids isolated from Afzelia africana and Detarium microcarpum seeds

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Fatty Acids ◽  
The Body ◽  
The Other ◽  
Appreciable Amount ◽  
Volatile Fraction ◽  
Volatile Constituents ◽  
Other Hand ◽  
Detarium Microcarpum ◽  
Afzelia Africana ◽  
Physiological Benefits

The seed endosperms of Afzelia africana and Detarium microcarpum are known materials for soup thickening in Southeast and some other parts of Nigeria. The hydrocolloids responsible for the thickening effect were isolated from the seed endosperms and characterised using GC-MC technique. The volatile fraction of A. africana seed hydrocolloids showed the presence of seventeen constituents consisting of aromatic (0.80%), hydrocarbons (7.67%), phenolic (0.39%), esters (10.19%), fatty acids (36.35%), alcohols (42.24%) and steroid (2.36%). On the other hand, twenty two compounds were identified in the seed hydrocolloids of D. microcarpum. They consist of hydrocarbons (20.32 %), aromatics (2.14 %), aldehyde (0.49%), phenolic (0.37%), fatty acids (67.80%), esters (5.09 %) and alcohol (3.80%). This investigation reveals that the two hydrocolloids contain appreciable amount of volatile phytochemicals that could provide certain physiological benefits to the body. Hydrocolloids from D. microcarpum contain more volatile phytochemicals than that of A. africana.

Quaternary structure of Limulus polyphemus hemocyanin

1978 ◽  
Vol 36 (2) ◽  
pp. 176-177
Author(s):  
T. Wichertjes ◽  
E.J. Kwak ◽  
E.F.J. Van Bruggen
Keyword(s):  
Electron Microscopy ◽  
Functional Properties ◽  
Horseshoe Crab ◽  
Temperature Jump ◽  
Quaternary Structure ◽  
Crystallographic Analysis ◽  
Limulus Polyphemus ◽  
Oxygen Binding ◽  
X Ray ◽  
Intact Molecule

Hemocyanin of the horseshoe crab (Limulus polyphemus) has been studied in nany ways. Recently the structure, dissociation and reassembly was studied using electron microscopy of negatively stained specimens as the method of investigation. Crystallization of the protein proved to be possible and X-ray crystallographic analysis was started. Also fluorescence properties of the hemocyanin after dialysis against Tris-glycine buffer + 0.01 M EDTA pH 8.9 (so called “stripped” hemocyanin) and its fractions II and V were studied, as well as functional properties of the fractions by NMR. Finally the temperature-jump method was used for assaying the oxygen binding of the dissociating molecule and of preparations of isolated subunits. Nevertheless very little is known about the structure of the intact molecule. Schutter et al. suggested that the molecule possibly consists of two halves, combined in a staggered way, the halves themselves consisting of four subunits arranged in a square.

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