title: Effect of calcium chloride treatments on calcium content, anthracnose severity and antioxidant activity in papaya fruit during ambient storage.
abstract: BACKGROUND
  There have been no reports on the effects of preharvest calcium application on anthracnose disease severity, antioxidant activity and cellular changes during ambient storage of papaya, and therefore the objective of this study was to investigate these effects.
  
  
  RESULTS
  Higher calcium concentrations (1.5 and 2% w/v) increased calcium concentration in the peel and pulp tissues, maintained firmness, and reduced anthracnose incidence and severity. While leakage of calcium-treated fruit was lower for 1.5 and 2% calcium treatments compared to the control, microscopic results confirmed that pulp cell wall thickness was higher after 6 days in storage, for the 2% calcium treatment compared to the control. Calcium-treated fruit also had higher total antioxidant activity and total phenolic compounds during storage.
  
  
  CONCLUSIONS
  Calcium chloride, especially at higher concentrations, is effective in maintaining papaya fruit quality during ambient storage. © 2015 Society of Chemical Industry.
authors.affiliation: University Putra Malaysia, Crop Science, Serdang, Selangor, Malaysia.
authors.forename: Babak
authors.initials: B
authors.lastname: Madani
authors.affiliation: Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Yasouj, Yasouj, Iran.
authors.forename: Amin
authors.initials: A
authors.lastname: Mirshekari
authors.affiliation: University of Queretaro, Facultad de Ciencias Naturals, Avenida de las Ciencias s/n Juriquilla, Queretaro, Queretaro, Mexico.
authors.forename: Elhadi
authors.initials: E
authors.lastname: Yahia
mesh_terms: D065567:Absorption, Physiological; D000336:Aerosols; D000975:Antioxidants / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D002122:Calcium Chloride / Q000009:adverse effects / Q000737:chemistry* / Q000378:metabolism; D002136:Calcium, Dietary / Q000032:analysis*; D029441:Carica / Q000737:chemistry* / Q000254:growth & development / Q000378:metabolism / Q000648:ultrastructure; D002473:Cell Wall / Q000378:metabolism / Q000648:ultrastructure; D000069599:Crop Production; D018556:Crops, Agricultural / Q000737:chemistry / Q000254:growth & development / Q000378:metabolism / Q000648:ultrastructure; D005308:Fertilizers / Q000009:adverse effects; D005519:Food Preservation; D063427:Food Quality; D061353:Food Storage; D005638:Fruit / Q000737:chemistry* / Q000254:growth & development / Q000378:metabolism / Q000648:ultrastructure; D006801:Humans; D008296:Malaysia; D055595:Mechanical Phenomena; D008855:Microscopy, Electron, Scanning; D009753:Nutritive Value; D010636:Phenols / Q000819:agonists / Q000032:analysis / Q000378:metabolism
chemical_list: D000336:Aerosols; D000975:Antioxidants; D002136:Calcium, Dietary; D005308:Fertilizers; D010636:Phenols; D002122:Calcium Chloride
keywords: Carica papaya; ambient storage; anthracnose; postharvest; quality