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Evaluation of in vitro antidiabetic and antioxidant activities of different extracts of the root of Telfairia occidentalis Hook.fil. (Cucurbitaceae)

100%

Jumbo B. , Eseyin O. A. , Alozie J. C.

World News of Natural Sciences

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2025

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tom 58

28-43

EN

The leaves of Telfairia occidentalis are widely used as vegetable in the preparation of soups and consumed as food although it can also be used as an infusion in medicinal preparations due to its various medicinal properties such as anti-anemic, antidiabetic and antimicrobial activities etc. The present study sought to undertake the screening and quantification of the secondary metabolites and in vitro antioxidant and antidiabetic properties of the different extracts of the root of Telfairia occidentalis. Phytochemical constituents were determined using standard procedures. Antioxidant activity of the extracts was evaluated using DPPH scavenging activity and the antidiabetic activity evaluated using hemoglobin glycosylation and glucose uptake by yeast. The results of the phytochemical screening showed that the root of T. occidentalis contains saponins and alkaloids and quantitatively 4.7% and 1.26% respectively. From the antioxidant evaluation, the different extracts of the root of T. occidentalis were able to scavenge DPPH free radicals in a concentration dependent manner. The antidiabetic evaluation showed that the different extracts could inhibit hemoglobin glycosylation. The different extracts also caused an increase in glucose uptake by yeast than glibenclamide when compared together with Sample C (99.8% ethanol soxhlet extract) having the highest of these properties. In conclusion, the root of T. occidentalis can be employed in the treatment of diseases in which participation of reactive oxygen species are implicated such as diabetes.

2

Investigating plant growth and physiological response to soil wetting with grey water under different shade regimes: a case of fluted pumpkin (Telfairia occidentalis)

100%

Ikhajiagbe B. , Anoliefo G. O. , Ohanmu E. O. , Omoregie G. O. , Uwagboe T.

Electronic Journal of Polish Agricultural Universities. Series Agronomy

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2017

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tom 20

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nr 4

3

Effect of Salinity Stress on Mycorrhizal Association and Growth Response of Telfairia occidentalis Hook F. infected by Glomus geosporum

100%

Okon O. G. , Esenowo G. J.

World News of Natural Sciences

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2018

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tom 19

118-127

EN

The effect of arbuscular mycorrhizal fungi (Glomus geosporum) inoculation on Telfairia occidentalis grown in saline soil was investigated in a pot experiment. The experiment was laid out in a completely randomized design, with treatments replicated thrice. Standard recommended methods were used to determine photosynthetic pigments, minerals contents, biomass yield, AMF colonization and dependency. Our results show that saline soil treatment significantly (p=0.05) reduced total photosynthetic pigments contents - from 39.73 to 21.30 mg/kg, percentage AMF root colonization - from 53.97 to 22.41%, mineral contents; N - from 5.84 to 3.13%; P - 424.11 to 212.31 mg/kg; K - 3215.00 to 1220.00 mg/kg; Mg - 326.00 to 107.04 mg/kg; and Ca - 1640.00 to 813.00 mg/kg. Biomass yield of T. occidentalis was also significantly (p=0.05) reduced. In contrast, mycorrhizal dependency was significantly (p=0.05) increased in saline soil plants - from 15.13% to 100.00%. Herein, inoculation with G. geosporum significantly (p=0.05) increased total photosynthetic pigments - from 39.73 to 45.53 mg/kg; N - from 5.84 to 6.07%; P - 424.11 to 463.00 mg/kg; K - 3215.00 to 3470.12 mg/kg; Mg - 326.00 to 345.00 mg/kg and Ca -1640 to 1658.12 mg/kg; leaf dry weight - from 0.13 to 0.17g; vine dry weight - 5.21 to 5.81g; roots dry weight - 0.57 to 1.03 and total dry weight - 5.91 to 7.01g. Biomass yield was also significantly increased. R. irregularis colonization (from 22.41 to 53.97%) and mycorrhizal dependency in C. maxima was evident in both saline and non-saline soil treatments. The results of this work have shown that G. geosporum can enhance the ability of T. occidentalis to resist salt stress (possibly through several morphological/physiological changes and through improved vigour) via the extensive network of the mycorrhizal roots (which increases nutrient and water uptake). Inoculation with appropriate AMF can, therefore, be used to increase the productivity of T. occidentalis in saline soils.

4

Nutritional analysis and wine production potentials of Telfairia occidentalis (fluted pumpkin) leaves and Cucumis sativus L. (cucumber) using Baker’s and palm wine yeast strains

84%

Ebana R. U. B. , Edet U. O. , Anosike K. I. , Etok C. A. , Kanu T. O.

World News of Natural Sciences

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2019

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tom 22

12-30

EN

Telfairia occidentalis leaves and Cucumis sativus (cucumber) are vegetables that grow best in Tropical countries like Nigeria and have good nutritional properties but are highly perishable. Both vegetables were evaluated for wine production singly and in composite forms using palm wine and Baker’s yeast strains. In addition to wine production, the vegetables were screened for phytochemicals, anti-nutrients and nutrients (proximate composition, elements and vitamins) using standard methodologies. Proximate composition (g/100g dry matter) revealed that T. occidentalis leaves had moisture content, ash, protein, fat, fibre and carbohydrate contents of 86.60±0.10, 5.72±0.02, 4.30±0.10, 0.97±0.02, 6.30±0.10 and 82.45±0.02, respectively. In contrast, Cucumis sativus had a moisture content, ash, protein, fat, fibre and carbohydrate contents of 96.75±0.01, 5.40±0.02, 13.50±0.02, 10.30±0.10, and 66.12±0.01, respectively. Both plants contained various phytochemicals, including alkaloids, glycosides, saponins, tannins, flavonoids, reducing compounds and polyphenol, but not anthraquinones and phlabotanins. However, on quantification, reducing compounds and polyphenol recorded the highest concentrations. Vitamins A and C were detected in both samples. C. sativus had high amounts of K, P, and Mg and moderate amounts of Ca, Na, Cu, Fe and Mg. T. occidentalis leaves had moderate amounts of Ca, Zn, Fe, Mg, Ca and Na. Anti-nutrients levels were all below allowable regulatory limits for vegetables. Density, pH and alcohol values ranged from 0.20 - 0.99, 0.30- 4.6 and 1.95 - 9.94%, respectively. Sensory evaluation of the wine samples showed that wine produced from 70% fluted pumpkin and 30% cucumber had the best scores in terms of acceptability, taste, aroma and appearance. Given the findings in the study, wine production using tropical vegetables could double as a viable alternative to tropical fruits and also help to curb post-harvest losses commonly experienced in the tropics.

5

Enhancement of salt tolerance via glomus geosporum inoculation in Telfairia occidentalis Hook. F. seedlings

67%

Okon O. G. , Eneh G. D. O. , Uboh G. D. , Uyon P. P.

International Letters of Natural Sciences

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2019

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tom 76

EN

The leafy vegetable Telfairia occidentalis is a tropical vine grown in West Africa; it is indigenous to Southern Nigeria and is usually subjected to extreme salt stress in Southern Nigeria as well as in the world that results in significant loss of T. occidentalis production. Therefore, the present investigation was aimed at evaluating the response of T. occidentalis seedlings inoculated with arbuscular mycorrhizal fungi (Glomus geosporum) in saline soil and further to determine the threshold of T. occidentalis salinity tolerance in association with G. geosporum. The total photosynthetic pigments contents in saline soil treatment were significantly (p=0.05) reduced as well as percentage arbuscular mycorrhizal fungi colonization (53.97 to 22.41%). Mycorrhizal dependency was significantly (p=0.05) higher in saline soil treatments compared to control (100.00% to 15.13%). Mineral analysis of T. occidentalis leaves revealed increased uptake and accumulation of Na⁺ (500.00 mg/kg in control to 2920.13 mg/kg in saline soil treatment). Saline soil treatments significantly (p=0.05) reduced the K, Mg, N, P and Ca. AM Fungi significantly (p=0.05) increased the photosynthetic pigments and minerals both in saline and non-saline soil treatments. Using different mechanisms T. occidentalis by association with G. geosporum showed better salt tolerance thank the uninoculated plants. G. geosporum was able to impose some physiological and root morphological changes such as an extensive network of the mycorrhizal-plant roots to improve water and mineral nutrient uptake. Physiologically G. geosporum inoculation enriched T. occidentalis vigour, attuned the rate of K⁺/Na⁺ which restored nutrient and water balance in the plant and directly resulting in the enhancement of salt tolerance in T. occidentalis seedlings, thus improving growth and yield.