Distribution of selected metals and phytochemicals in seeds and peels extract of watermelon (Citrullus lanatus (Thunb.) Mansf.) in Bayelsa State, Nigeria

• Authors: Anthony Ogbuta , Samuel Ukachuku , Enegborienegha Teke , Daniel Ziriki
• Languages of publication: EN

Abstracts

EN

The nutritional benefits of agricultural trash and the therapeutic properties of leftover agricultural product parts are still being thoroughly researched in Africa. This investigation looked at the distribution of specific metals and phytochemicals in Bayelsa state, Nigeria, watermelon (Citrullus lanatus) seed and peel samples. Watermelons (Citrullus lanatus) were picked for their seeds and peel samples after being brought from several gardens in Nigeria's Bayelsa state. Ether acetate was used to extract the samples. The extracts were evaluated at various concentrations, including 10 mg/ml, 5 mg/ml, 2.5 mg/ml, 1.25 mg/ml, 0.625 mg/ml, and 0.3125 mg/ml, for phytochemicals. The phytochemical screening of the ethyl acetate extracts of seed and peel samples, revealed the presence of flavonoids, terpenoids, tannins and cardiac glycosides in seed extracts while flavonoids, phenols, terpernoids, cardiac glycosides, carboxylic acids, quinine and xanthoproteins were detected in peel sample. The samples were digested with an aqua regia and analyzed for metals using atomic absorption spectrometry (AAS). The total concentrations of the metals analyzed varied from 51.05 to 58.40 mg/kg, (5.20±54.73), mean concentrations of the individual metals from result showed iron Fe (28.70-32.60 mg/kg), Mn (11.67-14.14 mg/kg), K (0.24-0.25 mg/kg), Zn (7.89 -9.11 mg/kg), Ni (0.01 -0.03 mg/kg), Cu ( 0.42 -0.48 mg/kg), Mg (1.29 -1.47 mg/kg), Ca (0.56 -0.57 mg/kg) and Pb (0.00-0.01 mg/kg). Iron Fe concentrations were predominant in both seed and peel samples of (Citrullus lanatus). The concentrations of metal in seed and peel samples followed this order Fe>Mn > Zn > Mg >Ca>Cu > K > Ni >Pb and the concentrations of Fe and Mn were relatively higher than WHO daily intake permissible limits in Citrullus lanatus.

Keywords

EN

Citrullus lanatus; Watermelon; carboxylic acids; cardiac glycosides; metalsand flavonoids; phenols; quinine and xanthoproteins; terpernoids

Discipline

• FOOD_&_NUTRITION: FOOD & NUTRITION

• Publisher: Scientific Publishing House „DARWIN”
• Journal: World News of Natural Sciences
• Year: 2023
• Volume: 49
• Pages: 156-164

Contributors

author

Anthony Ogbuta

• Department of Chemical Sciences University of Africa, Toru--Orua, Bayelsa State, Nigeria

author

Samuel Ukachuku

• Department of Chemical Sciences University of Africa, Toru--Orua, Bayelsa State, Nigeria

author

Enegborienegha Teke

• Department of Biological Sciences University of Africa, Toru--Orua, Bayelsa State, Nigeria

author

Daniel Ziriki

• Department of Chemical Sciences University of Africa, Toru--Orua, Bayelsa State, Nigeria

References

• [1] Abu-Reidah, I.M., Arráez-Román, D., Segura-Carretero, A., Fernández-Gutiérrez, .A., Profiling of phenolic and other polar constituents from hydro-methanolic extract of watermelon (Citrullus lanatus) by means of accurate-mass spectrometry (HPLC–ESI–QTOF–MS). Food Res. International (2013), 51, 354–362
• [2] Ajayi, I.A., Ajibade, O. and Odeinde, R.A.,. Preliminary phytochemical analysis of some plant species. Journal Chemical Sciences, 3(12) (2011), 56-82
• [3] Anang, D.A., Pobee, R.A., Antwi, E.; Obeng, E.M., Atter, A.,Ayittey, F.K., Boateng, J.T. Nutritional, microbial and sensory attributes of bread fortified with defatted watermelon seed flour. International Journal. Food Science, 53 (2018) 1468–1475
• [4] Okunrobo, O.L., Uwaya, O.J., Imafion, E.K., Osarummwetlse, O.P and Omorodon, E.J. Quantitative determination, metal analysis and antiulcer evaluation of methanol seed extract of Citrullus lanatus thumb (Cucurbitaceae) in Rat. Asian Pacific Journal of Tropical Disease 2(3) (2012) S1261–S1265
• [5] Parekh, J. and Chanda, S.. In vitro antibacterial activity of crude methanol extract of wood Fordiafruticosakurz flower (Lythacease). Brazil Journal of Microbiology, 3 (2007) 8-21
• [6] Shimada, T. Salivary protein as a dense against dietary tannins. Journal of Chemical Ecology, 32(6) (2006) 1149-1163
• [7] Sobukola,O.P., Adeniran, M.O.,Odedario,A.A. and Kajihausa, O.E. Heavy metal levels of some fruit and vegetable from selected markets in Lagos state, Nigeria. Africa Journal of Food Science, 4 (2010) 389-393
• [8] Sofowora,A. Medicinal plants and traditional medicine in Africa. 2nd edition Spectrum Book Limited, Ibadan, Oyo state, Nigeria.(1993).
• [9] Sorokina, M., McCaffrey, K.S., Deaton, E.E., Ma, G., Ordovas, J.M.; Perkins-Veazie, P.M., Steinbeck, C., Levi, A., Parnell, L.D. A Catalog of Natural Products Occurring in Watermelon - Citrulluslanatus. Front. Nutrition, 8, (2021) 729-822
• [10] Suman, V., Narmadha, R.,Gomalhi, D., Kalaisclvi, M. and Devaki. Phytochemical screening and HPTLC finger printing analysis of Citrulluslanatus (thumb.) seed. Journal of Acute Disease. 3 (2013) 122-126
• [11] Tabiri, B., Agbenorhevi, J.K., Wireko-Manu, F.D., Ompouma, E.I. Watermelon Seeds as Food: Nutrient Composition, Phytochemicals and Antioxidant Activity. International Journal of Nutritional Food Science, 5 (2016) 139–144
• [12] Zaidi, M.I., Asrar, A., Munsor, A. and Faroughi, M.A. The heavy metal concentrations along road side tree of Quetta: Effects on public health. Journal of Applied Sciences, 5 (2005) 708-711
• [13] Zhang, M.K., Liu, Z.Y., and Wang, H. Use of single extraction methods to predict bioavailability of heavy metals in polluted soils to rice, Communications in Soil Science and Plant Analysis 41(7) (2010) 820–831
• [14] Zuchowski, J., Jonczyk, K., Pecio, L., Oleszek, W. Phenolic acid concentrations in organically and conventionally cultivated spring and winter wheat. Journal Science Food Agriculture 91 (2011) 1089–1095

• Document Type: article