Physicochemical Properties, Fatty Acids Composition and Antioxidant Potential of the Seed Kernel Oil of Oysternut (Telfairia pedata) Found in Kenya
European Journal of Medicinal Plants,
Aim: Certain edible plant sources contain vegetable oils that have been under-exploited both commercially and in research. This study aimed to determine the physicochemical properties, fatty acids composition, and antioxidant potential of the oil from the seed kernels of Telfairiapedata, which are used as food by the local population of Tharaka-Nithi County in Kenya.
Materials and Methods: Telfairia pedata seeds were collected from farmers in the county of Tharaka-Nithi, Kenya. n-Hexane was used to extract the oil via soxhlet extraction. Standard laboratory protocols were used to characterize the oil’s physicochemical properties, while fatty acids composition and antioxidant potential were characterized using gas chromatography mass spectrometry and 2, 2-diphenyl-1-picrylhydrazyl assay, respectively.
Results: The seed kernels of Telfairia pedata yielded more than 66% of oil. The oil’s physicochemical properties were found to be within the Food and Agriculture Organization set limits and were as follows; moisture content (0.0592±0.0140%), peroxide value (0.9641±0.2021 meq O2/Kg), iodine value (23.0058±2.2473 gI2/100g) and acid value (0.6352±0.0330 mg KOH/g). Fatty acids such as myristic acid (14:0; 0.11%), palmitoleic acid (16:1n7; 0.13%), palmitic acid (16:0; 34.97%), margaric acid (17:0; 0.10%), linoleic acid (18:2n6; 48.46%), stearic acid (18:0; 15.33%), 10,13-octadecadienoic acid (18:2n5; 0.09%), 18-methylnonadecanoic acid (20:0; 0.68%), and behenic acid (22:0; 0.14%) were found in the oil. The antioxidant potential of the oil expressed in IC50 was found to be 18.05 mg/mL, in relation to that of ascorbic acid 2.406 mg/mL.
Conclusions: Telfairia pedata seed kernel oil can be economical to exploit commercially due to its relatively high yield. The determined properties of Telfairiapedata seed kernel oil present high nutritive value making the oil fit for edible applications.
- Telfairia pedata
- physicochemical properties
- essential fatty acid
- antioxidant potential
How to Cite
Minzangi K, Mpiana P, Samvura B, Kaaya A, Bertrand M, Kadima J. Composition of fatty acids and tocopherols content in oilseeds of six wild selected plants from Kahuzi-Biega National Park/DR. Congo. European J Med Plants. 2015;8(3):157–66.
Bavhure B. Fatty acid composition of lebrunia bushiae staner and tephrosiavogelii Hook.f. Seed Oils. European J Med Plants. 2014;4(7):844–53.
Onyeike EN, Acheru GN. Chemical composition of selected Nigerian oil seeds and physicochemical properties of the oil extracts. Food Chem. 2002;77(4):431–7.
Dauqan E, Sani HA, Abdullah A, Muhamad H, Gapor Md Top AB. Vitamin E and beta carotene composition in four different vegetable oils. Am J Appl Sci. 2011;8 (5):407–12.
Kumar A, Sharma AC. Upadhyaya K. Vegetable oil: Nutritional and Industrial Perspective. Curr Genomics. 2016;17(3): 230–40.
Hamm W. Vegetableoils | Oil production and processing. Encycl food sci nutr. 2003; 5904–16.
Tulchinsky H Theodore. Micronutrient deficiency conditions: Global Health Issues. Public Health Rev. 2010;32 (1):243–55.
Lecerf JM. Fatty acids and cardiovascular disease. Nutr Rev. 2009;67(5):273–83.
Barceló-Coblijn G, Murphy EJ. Alpha-linolenic acid and its conversion to longer chain n-3 fatty acids: Benefits for human health and a role in maintaining tissue n-3 fatty acid levels. Prog Lipid Res. 2009;48 (6):355–74.
Negash YA, Amare DE, Bitew BD, Dagne H. Assessment of quality of edible vegetable oils accessed in Gondar City, Northwest Ethiopia. BMC Res Notes. 2019;12(1):1–5.
ISO 5509:2000 Animal and vegetable fats and oils — Preparation of methyl esters of fatty acids; 2000.
Prevc T, Šegatin N, Poklar Ulrih N, Cigić B. Dpph assay of vegetable oils and model antioxidants in protic and aprotic solvents. Talanta. 2013;109:13–9.
Juhaimi F Al, Uslu N, Babiker EE, Ghafoor K, Mohamed Ahmed IA, Özcan MM. The effect of different solvent types and extraction methods on oil yields and fatty acid composition of safflower seed. J Oleo Sci. 2019;68(11):1099–104.
Haile M, Duguma HT, Chameno G, Kuyu CG. Effects of location and extraction solvent on physico chemical properties of Moringa stenopetala seed oil. Heliyon. 2019;5(11):1–5.
FAO. Codex Alimentarius [Internet]; 2019. [Cited 2020 Apr 7].
Lima JR, Garruti DS, Bruno LM. LWT - Food Science and Technology Physicochemical , microbiological and sensory characteristics of cashew nut butter made from different kernel grades-quality. LWT - Food Sci Technol. 2012; 45(2):180–5.
Chen MH, Bergman CJ, McClung AM. Hydrolytic rancidity and its association with phenolics in rice bran. Food Chem. 2019; 285:485–91.
Aljuhaimi F, Ghafoor K, Özcan MM, Miseckaite O, Babiker EE, Hussain S. The effect of solvent type and roasting processes on physico-chemical properties of tigernut (Cyperus esculentus L.) tuber oil. J Oleo Sci. 2018;67(7):823–8.
Wen YQ, Xue CH, Xu LL, Wang XH, Bi SJ, Xue QQ, et al. Application of plackett–burman design in screening of natural antioxidants suitable for anchovy oil. Antioxidants. 2019;8(12):1–15.
Chebe J, Kinyanjui T, Cheplogoi Chairman PK, Cheplogoi Chairman PK, Chebet J, Cheplogoi PK. Impact of frying on iodine value of vegetable oils before and after deep frying in different types of food in Kenya. J Sci Innov Res. 2016;5(5):193–6.
Agatemor C. Studies of selected physicochemical properties of fluted pumpkin (Telfairia occidentalis Hook F.) seed oil and Tropical almond (Terminalia catappia L.) seed oil. Pakistan J Nutr. 2006;5(4):306–7.
Mahajan S, Konar SK, Boocock DGB. Determining the acid number of biodiesel. JAOCS, J Am Oil Chem Soc. 2006;83 (6):567–70.
Di Pasquale MG. The essentials of essential fatty acids. J Diet Suppl. 2009;6 (2):143–61.
Nettleton JA, Brouwer IA, Geleijnse JM, Hornstra G. Saturated fat consumption and risk of coronary heart disease and ischemic stroke: A science update. Ann Nutr Metab. 2017;70(1):26–33.
Liu AG, Ford NA, Hu FB, Zelman KM, Mozaffarian D, Kris-Etherton PM. A healthy approach to dietary fats: Understanding the science and taking action to reduce consumer confusion. Nutr J. 2017;16(1):1–15.
Hayes J, Benson G. What the latest evidence tells us about fat and cardiovascular health. Diabetes Spectr. 2016;29(3):171–5.
Pizzino G, Irrera N, Cucinotta M, Pallio G, Mannino F, Arcoraci V, et al. Review article oxidative stress : Harms and Benefits for Human Health. 2017;2017:1–13.
Amorati R, Foti MC, Valgimigli L. Antioxidant activity of essential oils. J Agric Food Chem. 2013;61(46):10835–47.
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