Health–beneficial compounds from edible and waste bulb components of sweet onion genotypes organically grown in northern Europe

DOI: 10.7904/2068-4738-X(19)-58

Victor NEMTINOV1, Nadezhda GOLUBKINA2*, Andrey KOSHEVAROV2, Yulia KONSTANCHUK1, Anna MOLCHANOVA2, Sergei NADEZHKIN2, Vincenzo Michele SELLITTO3, Gianluca CARUSO4

1Federal State Budget Scientific Institution ‘Research Institute of Agriculture’ 295453, Simferopol, RUSSIA

2 Federal Scientific Center of Vegetable Production, Selectsionnaya str. 14, VNIISSOK, Odintsovo district, Moscow region 143072, RUSSIA

3Msbiotech S.p.A., Larino (Campobasso), ITALY

4 Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici (Naples), ITALY

*Corresponding author:

Abstract.The onion sweet bulb genotypes grown in the Crimean republic (Russia) have a high nutritional value, but have been poorly characterized so far. Research was carried out in order to assess quality, antioxidant and mineral composition features of 9 Crimean genotypes in comparison with the Italian sweet variety ‘Tropea’. ‘Yaltinsky 6А’ showed the highest yield. Beam Promine attained the highest values of bulb dry residue, soluble solids and total sugars, but the lowest monosaccharides content. The Crimean genotypes showed higher levels of ascorbic acid and total acidity than ‘Tropea’, but lower concentrations of Fe, Cu, Mn and Zn. The Crimean genotypes examined showed interesting yield and quality performances, and also the potentiality to valorizing the bulb peel for extracting health–beneficial compounds such as antioxidants.

Keyword: Allium cepa L.; Crimean and Italian varieties; sugars; pungency; flavonoids; ascorbic acid.

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