Rumex obtusifolius is a wild food plant with great nutritional value, high content of bioactive compounds and antioxidant activity

  • William Gustavo Sganzerla, Rodolfo Schmit, Mayeve Didomenico Melo
  • Mônia Stremel Azevedo, Paula Iaschitzki Ferreira
  • Ana Paula de Lima Veeck, Jocleita Peruzzo Ferrareze Federal Institute of Education, Science and Technology of Santa Catarina, Lages, Santa Catarina State, Brazil

Abstract

Few studies were performed with wild plants, and researches are important to plants valorization and conservation. In this work we evaluated the nutritional composition, bioactive compounds and antioxidant activity of an unconventional food plant, mostly considered as a weed (Rumex obtusifolius). All the analyses were performed in leaf and root: moisture, ashes, lipids, proteins, carbohydrates, pH and total acidity. Phenolic, flavonoids, flavonols, antioxidant activity (DPPH, ABTS and FRAP) were quantified in aqueous, ethanolic and hydroethanolic extracts. Results show that hydroethanolic extract from root presented more bioactive compounds (p<0.05) and more antioxidant activity by ABTS and FRAP assay; ethanolic and hydroethanolic extract from root presented non-significant difference (p>0.05) by DPPH assay. Pearson’s correlation coefficients proved that antioxidant capacity is related to the presence of bioactive compounds in the root and leaf of Rumex obtusifolius. Using principal component analysis the extracts were classified in tree groups according to extraction potential, been the root hydroethanolic and ethanolic extracts the highest. This unconventional spread worldwide plant presents a great content of nutritional composition and has the potential to be used in human consumption, providing nutrients and bioactive compounds with high antioxidant activity.

Keywords: Rumex obtusifolius; unconventional food plant; bioactive compounds; antioxidant capacity; principal component analysis
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How to Cite
Schmit, Mayeve Didomenico Melo, W. G. S. R., M. S. A. Paula Iaschitzki Ferreira, and A. P. de L. V. Jocleita Peruzzo Ferrareze. “Rumex Obtusifolius Is a Wild Food Plant With Great Nutritional Value, High Content of Bioactive Compounds and Antioxidant Activity”. Emirates Journal of Food and Agriculture, Vol. 31, no. 4, May 2019, pp. 315-20, doi:https://doi.org/10.9755/ejfa.2019.v31.i4.1946. Accessed 21 Aug. 2019.
Section
Short Communication