title: Influence of cultivar and ripening time on bioactive compounds and antioxidant properties in Cape gooseberry (Physalis peruviana L.).
abstract: BACKGROUND
  Cape gooseberry (Physalis peruviana) is an exotic fruit highly valued for its organoleptic properties and bioactive compounds. Considering that the presence of phenolics and ascorbic acid could contribute to its functional capacity, it is important to investigate the quality parameters, bioactive contents and functional properties with respect to genotype and ripening time. In this study the genotype effect was evaluated in 15 cultivars for two different harvest times. Changes during maturation were recorded in two commercial cultivars within seven levels of maturity.
  
  
  RESULTS
  Multivariate statistical analysis suggested that phenolic content and ORAC value were mainly affected by harvest time and that ascorbic acid content and DPPH level were mainly affected by genotype. In addition, acidity, phenolic content, ORAC value and inhibition of LDL oxidation decreased with maturity, but soluble solids content, ascorbic acid content, β-carotene content and DPPH-scavenging activity were higher in mature fruits.
  
  
  CONCLUSIONS
  The phenolic content, ascorbic acid content and antioxidant properties of Cape gooseberry fruit were strongly affected by cultivar, harvest time and maturity state. Consequently, the harvest time must be scheduled carefully to gain the highest proportion of bioactive compounds according to the specific cultivar and the environment where it is grown.
authors.affiliation: Grupo de Investigación en Sustancias Bioactivas, Facultad de Química Farmacéutica, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia.
authors.forename: Karent
authors.initials: K
authors.lastname: Bravo
authors.forename: Stella
authors.initials: S
authors.lastname: Sepulveda-Ortega
authors.forename: Oscar
authors.initials: O
authors.lastname: Lara-Guzman
authors.forename: Alejandro A
authors.initials: AA
authors.lastname: Navas-Arboleda
authors.forename: Edison
authors.initials: E
authors.lastname: Osorio
mesh_terms: D000975:Antioxidants / Q000378:metabolism / Q000494:pharmacology*; D001205:Ascorbic Acid / Q000378:metabolism / Q000494:pharmacology*; D001713:Biphenyl Compounds / Q000378:metabolism; D008078:Cholesterol, LDL / Q000097:blood; D005452:Fluoresceins; D005638:Fruit / Q000254:growth & development / Q000378:metabolism; D055951:Functional Food; D005838:Genotype; D006801:Humans; D010042:Ouabain / Q000031:analogs & derivatives; D010636:Phenols / Q000378:metabolism / Q000494:pharmacology*; D032321:Physalis / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D010851:Picrates / Q000378:metabolism; D010936:Plant Extracts / Q000378:metabolism / Q000494:pharmacology; D019207:beta Carotene / Q000378:metabolism / Q000494:pharmacology*
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D008078:Cholesterol, LDL; D005452:Fluoresceins; D010636:Phenols; D010851:Picrates; D010936:Plant Extracts; C109049:rhodol green-ethylenediamine-ouabain; D019207:beta Carotene; D010042:Ouabain; C004931:1,1-diphenyl-2-picrylhydrazyl; D001205:Ascorbic Acid
keywords: Physalis peruviana; antioxidant properties; genotype; ripening