Effects of Hydrogen‐Donating or Metal‐Chelating Antioxidants on the Oxidative Stability of Organogels Made of Beeswax and Grapeseed Oil Exposed to Light Irradiation

Abstract

Recently, interest in organogels has increased due to their properties of maintaining a solid state at room temperature and composition of trans-free and highly unsaturated fatty acids. However, the addition of antioxidants is necessary due to the high degree of unsaturation in organogels. The results of this study showed that the addition of sesamol significantly enhanced the oxidative stability of organogels under light irradiation. Therefore, the use of sesamol-supplemented organogels could prolong the shelf-life of bakery or meat food products.

Computationally Designed Sesamol Derivatives Proposed as Potent Antioxidants

“…One of the most widely studied properties of sesamol is its antioxidant activity. − It has been proved to have effective capacity for inhibiting hydroxyl radical-induced deoxyribose degradation and lipid peroxidation ,− which helps protecting plasma, low-density lipoprotein, and erythrocyte membrane from oxidation. − Sesamol also induces nitric oxide (the most important vascular relaxing factor) release from endothelial cells. , It has scavenging effects against hydroxyl (OH • ), superoxide anion (O 2 •– ), nitric oxide, hydrogen peroxide (H 2 O 2 ), and other oxidants, − in some cases with an efficiency higher, or equal to those of ascorbic acid and vitamin E . Based on its free radical scavenging activity, it has been suggested to use sesamol in the management of Huntington’s, Alzheimer’s, and Parkinson’s diseases, auto-immunity disorders, and brain damage in autism. − …”

Addition of Sesamol Increases the Oxidative Stability of Beeswax Organogels and Beef Tallow Matrix Under UV Light Irradiation and Thermal Oxidation

“…Hong et al. () found that metal chelators did not show a distinct antioxidant capacity in organogels and the addition of 10 to 40 ppm sesamol significantly enhanced the oxidative stability in beeswax organogels to a greater extent than α‐tocopherol and β‐carotene ( P < 0.05). Sesamol alone showed better oxidative stability than the addition of EDTA or a mixture of sesamol and citric acid (Hong et al., ).…”

“…() found that metal chelators did not show a distinct antioxidant capacity in organogels and the addition of 10 to 40 ppm sesamol significantly enhanced the oxidative stability in beeswax organogels to a greater extent than α‐tocopherol and β‐carotene ( P < 0.05). Sesamol alone showed better oxidative stability than the addition of EDTA or a mixture of sesamol and citric acid (Hong et al., ). Sesamol can generate benzoquinone anion radical and sesamolyl radical by UV or pulsed UV laser irradiation in aqueous solution (Nakagawa, ), which could play important roles in strong antioxidant capacities of sesamol in bulk oils and in organogel matrix at UV irradiation.…”

“…Hong et al. () tested different antioxidants, including tert ‐butylhydroquinone (TBHQ), sesamol, α‐tocopherol, β‐carotene, and ethylenediaminetetraacetic acid (EDTA) in beeswax‐organogels and found that sesamol was one of the most effective antioxidants for organogels under visible light irradiation.…”

“…Hong et al. () reported that organogels containing 10 to 40 ppm sesamol possessed high oxidative stability, which was markedly higher than that achieved by α‐tocopherol and β‐carotene. The addition of sesamol alone showed better oxidative stability than the addition of EDTA or a mixture of sesamol and citric acid (Hong et al., ).…”