Vulgaxanthin

{{Multiple image | perrow = 1 | total_width = 200 | header = Chemical structures of vulgaxathanins

| image1 = Vulgaxanthin I.svg

| caption1 = Vulgaxanthin I

| image2 = Vulgaxanthin II.svg

| caption2 = Vulgaxanthin II

| image3 = Vulgaxanthin III.svg

| caption3 = Vulgaxanthin III

| image4 = Vulgaxanthin IV.svg

| caption4 = Vulgaxanthin IV

}}

Vulgaxanthins are a group of betaxanthins, or the predominant yellow plant pigments found in red beets, among other plants like Mirabilis jalapa and swiss chard. They are antioxidant pigments, types I, II, III, IV, and V. Like all betaxanthins, they cannot be hydrolyzed by acid to aglycone without degradation. Water activity also affects stability of this antioxidant. It has been studied as a natural nutritional additive but instability remains a problem.{{Cite journal|last1=Trejo-Tapia|first1=G.|last2=Balcazar-Aguilar|first2=J. B.|last3=Martínez-Bonfil|first3=B.|last4=Salcedo-Morales|first4=G.|last5=Jaramillo-Flores|first5=M.|last6=Arenas-Ocampo|first6=M. L.|last7=Jiménez-Aparicio|first7=A.|date=2008-01-01|title=Effect of screening and subculture on the production of betaxanthins in Beta vulgaris L. var. 'Dark Detroit' callus culture|url=https://www.sciencedirect.com/science/article/pii/S1466856407000641|journal=Innovative Food Science & Emerging Technologies|language=en|volume=9|issue=1|pages=32–36|doi=10.1016/j.ifset.2007.04.009|issn=1466-8564|url-access=subscription}}