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Browsing by Author "Nyam, Kar Lin"

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  • Contribution of tocols to food Sensorial properties, stability, and overall quality
    Publication . Delgado, Amélia; Al-Hamimi, Said; Ramadan, Mohamed Fawzy; Wit, Maryna De; Durazzo, Alessandra; Nyam, Kar Lin; Issaoui, Manel
    This paper reviews the contribution of tocopherols and tocotrienols (tocols) to food quality as well as their bioactivity and health-promoting properties, which have attracted researchers and food technologists. Tocols are lipophilic phenolic antioxidants encompassing tocopherols that are characterized by a saturated side chain and tocotrienols with an unsaturated isoprenoid side chain. Tocols are natural constituents of several foods like dairy, vegetable oils, nuts, and grains. Their presence in foods, namely, as food additives, helps prevent lipid oxidation, which negatively affects the sensorial quality of foods, and even the nutritional value and safety. Supplementation of animals’ diets with tocopherols has proven its effectiveness in preserving fresh color and flavor of the meat. Although alfa-tocopherol displays much higher vitamin E activity than other tocols, health outcomes have been reported for tocotrienols, thus calling for more studies.
    2020Journal article Open access Show more
  • Occurrence of tocols in foods: an updated shot of current databases
    Publication . Durazzo, Alessandra; Nazhand, Amirhossein; Lucarini, Massimo; Delgado, Amélia; De Wit, Maryna; Nyam, Kar Lin; Santini, Antonello; Fawzy Ramadan, Mohamed
    Tocols are present in various foods, mostly in fruits and in plant seeds. Edible oils are the most important natural dietary sources of tocopherols and tocotrienols, collectively known as tocols. Tocopherols and tocotrienols are considered beneficial for their antioxidant effect which impacts on prevention of different health conditions. This perspective is addressed to give an updated picture of the tocol occurrence in foods. Moreover, the current state of the art of tocols in updated databases is explored and commented outlining their importance and future trends.
    2021Journal article Open access Show more