“…Therefore, the covering layer of plant-synthesized selenium nanoparticles is extremely critical from the point of view of their further medical use. SeNP packaging involves diversified functional groups and compounds, such as carboxyl groups [118,119], alcohol groups [120,121], phenolic groups [122], amines [123], amides [124], alkanes [120], aldehydes, ketones [125], esters [126,127], amino acids [114], tannins [123], flavonoids [117,[128][129][130], cannabinoids [131], proteins [132][133][134][135], polysaccharides [136,137], ascorbic acid [138], carbohydrates [135,139], polyphenols [140,141], terpenoids [142,143], sugars [144], alkaloids [145,146], glycosides [145], and saponins [146].…”