gynandropsis gynandra
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2021 ◽  
Vol 5 ◽  
Author(s):  
Barthlomew Yonas Chataika ◽  
Levi Shadeya-Mudogo Akundabweni ◽  
Aristide Carlos Houdegbe ◽  
Enoch G. Achigan-Dako ◽  
Julia Sibiya ◽  
...  

Increased public awareness of healthy foods and healthy living, coupled with escalating medicinal costs and recent advances in research and technology, has sparked a paradigm shift to nutraceuticals, which guarantee human health and disease prevention. Spider plant (Gynandropsis gynandra) contains dietary phytochemicals with high nutritional and medicinal properties that can contribute to healthy living. A study was conducted to identify spider plant (Gynandropsis gynandra (L.) Briq.) accessions with superior levels of dietary phytochemicals and anti-oxidative activity for use in nutraceutical breeding. Thirty-three accessions of spider plant, representing a wide genetic diversity based on geographic areas of origin (Asia, East Africa, Southern Africa, and West Africa), were used. Total phenolic acids, tannins, and anthocyanins were extracted and quantified using the Folin-Ciocalteau colorimetric, spectrophotometric, and pH differential methods, respectively. Antioxidant activity was determined using phosphomolybdenum method. Results showed significant variation in levels of total phenolic compounds, tannins, anthocyanins, and antioxidant activity (P < 0.05) amongst the spider plant accessions and regions of origin; ODS-15-037 (464 mg TAE/g DW), ODS-15-053 (270 mg GAE/g DW), and BC-02A (127 mg cyanidin-3-glucoside/g DW) had the highest levels of total tannins, phenolic compounds, and anthocyanins, respectively. Antioxidant activity was high in ODS-15-053 (492.2 mg AAE/100 g DW), NAM 2232 (445.3 mg AAE/100 g DW), and NAM-6 (432.5 mg AAE/100 g DW). On average, West African accessions had significantly high tannin concentrations (239 mg TAE/g DW), while Southern Africa accessions contained significantly high anthocyanin content (58.9 mg cyanidin-3-glucoside/g DW). The superior accessions are potential candidates for use in nutraceutical breeding, while the regions of origin could be used as gene pools for specific phytochemicals for improving dietary supplements of nutraceuticals. The strong antioxidant activity exhibited by spider plant accessions suggests the presence of compounds responsible for scavenging free oxygen or nitrogen radicals. Further studies are recommended to identify the chromosomal regions that contain genes controlling the dietary nutraceuticals in the genetic materials and to determine their association with foliage yield and other phenotypes, which can be utilized in spider plant improvement.


2021 ◽  
pp. 767-812
Author(s):  
Enoch G. Achigan‐Dako ◽  
Dêêdi E.O. Sogbohossou ◽  
Carlos A. Houdegbe ◽  
Mouizz A. Salaou ◽  
Fernand S. Sohindji ◽  
...  

Plants contain many biologically active compounds that have potential for development as medicinal agents. The study was conducted to investigate the antimicrobial activities of Gynandropsis gynandra (leaves and stem) and its major bioactive constituents (phytochemicals). The aqueous and ethanol extracts from the leaves and stem of the plant was tested using well Diffusion method for their antimicrobial activity against some members Enterobacteriales family (Escherichia coli, Shigella sp, Klebsiella sp and Salmonella typhi) isolated from diarrheic stool sample from Murtala Muhammad specialist Hospital, Kano. Preliminary phytochemical analyses showed that both stem and leaf extracts contain alkaloids, tannins, terpenoid, Anthraquinones, reducing sugar, amino acid, flavonoids, saponins, cardiac glycosides, resin and phenols. The result shows that the extracts demonstrated higher antibacterial activity against the isolates tested with the average zone of inhibition of 16.60 mm, 16.54 mm, 14.73 mm and 13.95 mm for Shigella sp, E. coli, Klebsiella sp and S. typhi respectively. The result also demonstrated that leaf extract is more effective than the stem extract. The ethanolic extracts of the plant showed higher zones of inhibition against test organisms (17.74 mm) compared to aqueous extracts (13.15 mm). There is no significant different on the susceptibility of the organisms tested against the extracts at p


2021 ◽  
pp. 251-260
Author(s):  
Rainer W. Bussmann ◽  
Narel Y. Paniagua-Zambrana ◽  
Grace N. Njoroge

2020 ◽  
Vol 178 ◽  
pp. 112468
Author(s):  
E.O. Dêêdi Sogbohossou ◽  
Enoch G. Achigan-Dako ◽  
Roland Mumm ◽  
Ric C.H. de Vos ◽  
M. Eric Schranz

2020 ◽  
Vol 12 (16) ◽  
pp. 6604
Author(s):  
Barthlomew Yonas Chataika ◽  
Levi Shadeya-Mudogo Akundabweni ◽  
Enoch G. Achigan-Dako ◽  
Julia Sibiya ◽  
Kingdom Kwapata

Spider plants (Gynandropsis gynandra, L. Briq.) are a semi-wild vegetable reported to have high nutritional, medicinal, insecticidal, and cultural values, yet continue to be neglected in research. The study was undertaken to investigate indigenous knowledge and utilization of the species in five regions of northern Namibia. Three tools were used; (i) focus group discussion, (ii) semi-structured interviews involving a random selection of 100 farming households and 24 consumers, and (iii) key informant interviews involving four agricultural staff and two open-market supervisors. Data were subjected to descriptive statistics, inferential, and cluster analyses. The study found that farming households and consumers placed higher nutritional, sociocultural, and medicinal values in spider plants than any other vegetable. Ranking of utilization traits, such as nutritional, sociocultural, and medicinal use, revealed three clusters of sociolinguistic groups associated with geographical region. The vegetable was sold and used in most cultural, traditional, and religious functions as a relish, as a source of honor, to bring luck, and for protection. The diverse uses and value placed on spider plants could offer an opportunity for the development of technologies for enhancing their domestication, production, and utilization. It is recommended that follow-up studies be carried to identify specific sociocultural and geographic factors affecting the use of spider plants.


2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Jelila S. Blalogoe ◽  
Alfred O. Odindo ◽  
E. O. Dêêdi Sogbohossou ◽  
Julia Sibiya ◽  
Enoch G. Achigan-Dako

Agronomy ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 56 ◽  
Author(s):  
Barthlomew Chataika ◽  
Levi Akundabweni ◽  
Enoch G. Achigan-Dako ◽  
Julia Sibiya ◽  
Kingdom Kwapata ◽  
...  

Knowledge on the diversity and domestication levels of the spider plant (Gynandropsis gynandra) has the potential to affect pre-breeding for client-preferred traits, yet information is scarce in Namibia due to limited research. We investigated indigenous knowledge on the species diversity and domestication levels in the regions of Kavango West, Ohangwena, Omusati, Oshana, and Oshikoto of northern Namibia. Semi-structured interviews involving 100 randomly selected farming households, four key informant interviews, and a focus group discussion were conducted. Descriptive and chi-square tests were conducted using IBM SPSS version 20. Out of the possible four morphotypes, the results suggested that only one with green stem and green petiole existed and was associated with soils rich in organic manure. Spider plant abundance was reported to be on the decline, due to declining soil fertility. On a scale of 0 (wild species) to 6 (highest level of domestication), an index of 1.56 was found and this implied very low domestication levels. Furthermore, the study found significant differences in the trends of domestication across the sociolinguistic groups (χ2 (12, N = 98) = 46.9, p < 0.001) and regions studied (χ2 (12, N = 100) = 47.8, p < 0.001), suggesting cultural and geographical influences. In conclusion, the findings constituted an important precedent for guiding subsequent pre-breeding efforts.


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