Vegetable oils are among the foodstuffs produced and consumed in abundance by the population in Burkina Faso. These edible oils are nutrient sources for health. However, the oxidation of edible oils is a phenomenon that leads to their degradation. Hence, the objectives of this study were to determine the antioxidants compounds, to evaluate the antioxidant activity of vegetable oils produced in Burkina Faso and to propose good manufacturing practices. Thus, 32 samples of crude peanut oils and refined cottonseed oils were analyzed. α-Tocopherol was determined by High performance liquid chromatography (HPLC), total phenolic compounds and DPPH by spectrophotometry. The α-tocopherol averages are 10.89 and 56.44 mg/100 g for peanut oils and cottonseed oils, respectively (p < 0.05). For total phenolic compounds, the averages are 2.91 and 0.64 mg/100 g of gallic acid equivalent for peanut oils and cottonseed oils, respectively (p < 0.05). The inhibition percentages are respectively 17.97% and 5.58% (p < 0.05) for peanut oils and cottonseed oils. For antioxidant activity, the averages are 0.81 and 0.27 mg trolox/100 g for peanut oils and cottonseed oils, respectively (p < 0.05). Cottonseed oils have the highest levels of α-tocopherol while peanut oils have high levels of total phenolic compounds and antioxidant activity. Vegetable oils contain acceptable levels of α-tocopherol and total phenolic compounds for their oxidative stability and health benefits for the consumer. However, the levels of biomolecules will be higher if production and preservation conditions are improved and controlled. The results could be used for future recommendations about human feeding programs in Burkina Faso.
Citation: Souleymane Zio, Bakary Tarnagda, Flibert Guira, Driss Elothmani, Dominique Le Meurlay, Vanessa Lancon Verdier, Pierre Picouet, Aly Savadogo. Study on antioxidant activity of crude peanut oils and refined cottonseed oils from Burkina Faso[J]. AIMS Agriculture and Food, 2021, 6(4): 920-931. doi: 10.3934/agrfood.2021055
Vegetable oils are among the foodstuffs produced and consumed in abundance by the population in Burkina Faso. These edible oils are nutrient sources for health. However, the oxidation of edible oils is a phenomenon that leads to their degradation. Hence, the objectives of this study were to determine the antioxidants compounds, to evaluate the antioxidant activity of vegetable oils produced in Burkina Faso and to propose good manufacturing practices. Thus, 32 samples of crude peanut oils and refined cottonseed oils were analyzed. α-Tocopherol was determined by High performance liquid chromatography (HPLC), total phenolic compounds and DPPH by spectrophotometry. The α-tocopherol averages are 10.89 and 56.44 mg/100 g for peanut oils and cottonseed oils, respectively (p < 0.05). For total phenolic compounds, the averages are 2.91 and 0.64 mg/100 g of gallic acid equivalent for peanut oils and cottonseed oils, respectively (p < 0.05). The inhibition percentages are respectively 17.97% and 5.58% (p < 0.05) for peanut oils and cottonseed oils. For antioxidant activity, the averages are 0.81 and 0.27 mg trolox/100 g for peanut oils and cottonseed oils, respectively (p < 0.05). Cottonseed oils have the highest levels of α-tocopherol while peanut oils have high levels of total phenolic compounds and antioxidant activity. Vegetable oils contain acceptable levels of α-tocopherol and total phenolic compounds for their oxidative stability and health benefits for the consumer. However, the levels of biomolecules will be higher if production and preservation conditions are improved and controlled. The results could be used for future recommendations about human feeding programs in Burkina Faso.
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