Varză roșie

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Varză roșie
GenBrassica
SpecieBrassica oleracea var. capitata f. rubra
Grup de soiuriCapitata
Varză roşie secționată

Varza roșie (Brassica oleracea L. convar. capitata (L.) Alef. var. rubra DC[1]) este practic aceeași specie ca și varza albă, fiind o varietate a acesteia. A fost cunoscută și luată în cultură odată cu varza albă, încă de la sfârșitul Epocii de Piatră[2].

Caracteristici

Pe lângă aspectul coloristic diferit al celor două tipuri de varză, respectiv cea roșie și cea albă, mai există și alte diferențe, varza roșie conține cu până la 50% mai multă vitamina C decât varza albă (maximum 57 mg, pentru 100 de grame de produs proaspăt, față de un minim de 36 mg la varza albă).[3]

Pigmentul care îi dă culoarea roșie - violacee, denumit resveratrol, este un antioxidant, considerat cel mai puternic antioxidant natural descoperit până în prezent[4].

Colorant alimentar

Principala substanță care dă colorația roșu-violet a verzei roșii este cianidina. Acest colorant natural, extras din varza roșie, este folosit frecvent pentru colorarea băuturilor, a diferitelor dulciuri, a concentratelor uscate, gumelor de mestecat, iaurturilor și sosurilor.[5]

Note

  1. ^ DIRECTIVA COMISIEI din 14 ianuarie 1987 de modificare a unor directive ale Consiliului privind comercializarea semințelor și a materialului săditor (87/120/CEE)
  2. ^ Constantin Pârvu, Enciclopedia plantelor: Plante din flora României (4 volume), Editura Tehnică București, 2002-2005
  3. ^ Despre un articol varză
  4. ^ Varza Roșie, un aliment - medicament de excepție
  5. ^ Andreia VARGA, Violeta POPESCU, George Liviu POPESCU - Obținerea antocianinelor prin procedee de extracție

Bibliografie

  • Revista „Formula AS”, nr.848, 5-12 decembrie, redactor: Ilie Turdor, articol: „Legumele iernii”, secțiunea „Medicina naturii”

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