Assessment of Phytochemical Constituents and GC-MS Profile of Persea americana (avocado pear) and Dacryodes edulis (African pear) Ethanolic Seed Extracts.

In the present study, the antimalarial activity of the extracts and fractions of the leaves of Persea americana and Dacryodes edulis as well as their phytochemical compositions were examined. Each of the extracts of the plants was successively fractionated to obtain hexane, ethyl acetate, methanol, and water fractions. The extracts and fractions were tested against Plasmodium berghei in both curative and suppressive antimalarial mouse models. Their major phytochemical composition was studied by the standard chemical tests and HPLC analysis. The extracts and fractions of P. americana and D. edulis demonstrated significant ( p < 0.05 ) maximal plasmodial inhibition as 52.16 ± 2.77% and 57.10 ± 1.98%, respectively, and chemosuppression of parasitemia as 64.01 ± 0.08% and 71.99 ± 0.06%, respectively. The major secondary metabolites identified in the plants include alkaloids, flavonoids, and saponins. It was concluded that P. americana and D. edulis possess promising antimalarial activity and they are potential sources of new lead compounds against malaria.

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GENETIC VARIABILITY AND INTERRELATIONSHIP AMONG MORPHOLOGICAL TRAITS IN AFRICAN PEAR FRUIT (DACRYODES EDULIS (G.DON) H.J. LAM) ACCESSIONS

Journal of Agricultural Science and Environment ◽

10.51406/jagse.v19i1.2014 ◽

2020 ◽

Vol 19 (1) ◽

pp. 46-59

Author(s):

V. I. ALAJE ◽

C. O. ALAKE

Keyword(s):

Genetic Variability ◽

Total Variation ◽

Morphological Traits ◽

Biomass Accumulation ◽

Leaf Length ◽

Root Weight ◽

Pear Fruit ◽

Leaf Weight ◽

Dacryodes Edulis ◽

African Pear

African pear fruit (Dacryodes edulis) is a highly sought for multipurpose agroforestry tree species that has the potential for both local and international trades, Nigeria is among the leading producer of the fruit, but its pattern and extent of its genetic variability is currently unknown. Hence, a study was carried out to determine the pattern and extent of genetic variability and interrelationships among 13 morphological traits of African pear fruit accessions. The experiment was laid in a Completely Randomized Design in 5 replications. Data collected on number of leaf production, leaf length, leaf breadth, leaf length/breadth ratio, internode distances, plant height, collar diameter, fresh leaf weight, fresh stem weight, fresh root weight, dry leaf weight, dry stem weight, dry root weight and biomass accumulation were subjected to Analysis of Variance. Treatment means were separated using Duncan’s Multiple Range Test at 5% probability level. Results showed significant (p<0.05) differences among the D. edulis genotypes for most of the traits evaluated indicated variation in the performance of the genotypes and pattern of clustering indicated that there was no association between eco-geographical distribution of genotypes and genetic diversity. PCA revealed that fourteen axes accounted for 100% of the variations observed while the first five axes contributed 73.23% of the total variation observed. The first axis accounted for 25.61% of the total variation while the second and third accounted for 15.43 and 15.01%, respectively. The fourth axis contributed 9.82% of the total variation while the fifth axis contributed 7.36% of the total variation. Significant phenotypic and genotypic correlations were observed between most of the plant characters evaluated and biomass accumulation which is an indication that the phenotypic association will be a good index for the genotypic association.

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Variations in the nutrients and bioactive compounds of different accessions of the West African pear (Dacryodes edulis): Implications for dietary intake assessment and health

Journal of Food Composition and Analysis ◽

10.1016/j.jfca.2019.03.005 ◽

2019 ◽

Vol 79 ◽

pp. 80-86 ◽

Cited By ~ 2

Author(s):

Henrietta Ene-Obong ◽

Godwin Igile ◽

Anthonia Ekpo ◽

Eneji Egbung ◽

Michael Agbo

Keyword(s):

Dietary Intake ◽

Bioactive Compounds ◽

West African ◽

The West ◽

Intake Assessment ◽

Dietary Intake Assessment ◽

Dacryodes Edulis ◽

African Pear

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Recovery of Iron Nanoparticles from Mine Wastewater Using Plant Extracts of Eucalyptus Globulus, Callistemon Viminalis and Persea Americana

Minerals ◽

10.3390/min10100859 ◽

2020 ◽

Vol 10 (10) ◽

pp. 859

Author(s):

Lovasoa C. Razanamahandry ◽

Assumpta C. Nwanya ◽

Michael O. Akharame ◽

Badeggi U. Muhammad ◽

Seteno K.O. Ntwampe ◽

...

Keyword(s):

Removal Efficiency ◽

Plant Extracts ◽

Eucalyptus Globulus ◽

Solid Phase ◽

Persea Americana ◽

Precipitation Reaction ◽

Mine Wastewater ◽

Callistemon Viminalis ◽

Seed Extracts

Mine wastewater (MW) is often rich in heavy metals that can have measurable effects on humans. The storage and treatment of MW remains a challenge for most mining companies. Iron (Fe) in MW was removed by using extracts from Eucalyptus globulus (EG); Callistemon viminalis (CV); and Persea americana (AS). Fe was removed from MW samples with an initial concentration of 5.53 mg Fe mL−1; 4.63 mg Fe mL−1 and 4.40 mg Fe mL−1 using EG leaves, CV flowers and AS seed extracts, respectively. Conditions of the MW decontamination were studied by varying the dosage of the plant extracts, the temperature of the medium and the contact time between the MW and the plant extracts. Undiluted plant extracts—which were mixed with the MW and heated at 45 °C for 3 h—gave the highest Fe-removal efficiency for CV (70%) and AS (53%) extracts, respectively. Similarly, EG extracts, albeit heated at 25 °C, showed a higher Fe-removal efficiency (85%) than the CV and AS extracts at low to high temperatures. The residual Fe concentration in the MW was 0.83 mg Fe mL−1, 1.39 mg Fe mL−1 and 2.07 mg Fe mL−1 for EG, CV and AS extracts, respectively. Residue solid-phase deposits from the precipitation reaction of the MW with the plant extracts were collected and analyzed. Fe was among the byproducts detected in the deposited material. The characterization of the annealed solid-phase deposits revealed Fe precipitates as maghemite-C (Fe2O3) and magnetite (FeFe2O4) nanoparticles. Therefore, the MW quality and form were improved, making it reusable for other purposes.

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