New insights into the antioxidant activity and components in crude oat oil and soybean oil

Abstract

Developing new antioxidants and using natural examples is of current interest. This study evaluated the antioxidant activities and the ability to inhibit soybean oil oxidation of oat oil obtained with different solvents. Oat oil extract obtained by ethanol extraction gave the highest antioxidant activity with a DPPH radical (1,1-diphenyl-2-picrylhydrazyl) scavenging activity of 88.2 % and a reducing power (A 700) of 0.83. Oat oil extracted by ethanol contained the highest polyphenol and α-tocopherol content. Significant correlation was observed between the total polyphenol contents, individual phenolic acid, α-tocopherol, and DPPH radical scavenging activity. Soybean oil with 2 % added oat oil showed low malondialdehyde content (8.35 mmol mL(-1)), suggesting that the added oat oil inhibited oxidation. Oat oil showed good antioxidant activity, especially when extracted with ethanol which could also retard the oxidation of soybean oil . DPPH radical scavenging activity was the best method to evaluate the antioxidant activity and components of oat oil.

Optimization of ultrasound‐assisted solvent extraction of hemp (Cannabis sativa L.) seed oil using RSM: Evaluation of oxidative stability and physicochemical properties of oil

“…Consistent with our results, Chen et al. (2016) demonstrated that the antioxidant activity of oil was increased with increasing the solvent polarity. In other words, the extracted oil would contain higher antioxidant compounds.…”

Charting oat (Avena sativa) embryo and endosperm transcription factor expression reveals differential expression of potential importance for seed development

“…Currently, oat is gaining in popularity due to its potential as a functional food crop and contents of health benefit promoting compounds as antioxidants, lipids and high levels of globular proteins. Oat is also well known as an excellent source of β-glucan (1-3; 1-4 mixed link β-d-glucan), a dietary fiber with documented and approved health claims regarding blood glucose stabilizing and cholesterol lowering properties (Butt et al 2008;Rasane et al 2015;Chen et al 2016). These different compounds are accumulating in the oat grain in which the endosperm tissue makes out the major and the embryo tissue only a minor part.…”

Suppression of Mammary Carcinomas by Alpha-Linolenic Acid: Part I. Effect of Extraction Methods on Quality and Gc-MS Analysis of Oil From Flaxseed (Linum Usitatissimum L.).

“…The antioxidant potential was used for the determination of anion scavenging activity of finely ground flaxseed flour oils using DPPH (1,1-diphenyl-2-picrylhydrazyl) as reported by (Chen, H. et al,(2016))with slight modification. The absorbance was measured at 520 nm.…”