African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

Applying of sodium nitroprusside (SNP) on postharvest ‘Nam Dok Mai No.4’ mango fruits delay ripening and maintain quality

Tran Thi Thuy Linh
  • Tran Thi Thuy Linh
  • Division of Postharvest Technology, School of Bioresources and Technology, King Mongkut?s University of Technology Thonburi, Bangkhuntein Rd., Thakham, Bangkhuntein, Bangkok, 10150, Thailand.
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Pongphen Jitareerat
  • Pongphen Jitareerat
  • Division of Postharvest Technology, School of Bioresources and Technology, King Mongkut?s University of Technology Thonburi, Bangkhuntein Rd., Thakham, Bangkhuntein, Bangkok, 10150, Thailand.
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Sukanya Aimla-or
  • Sukanya Aimla-or
  • Division of Postharvest Technology, School of Bioresources and Technology, King Mongkut?s University of Technology Thonburi, Bangkhuntein Rd., Thakham, Bangkhuntein, Bangkok, 10150, Thailand.
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Varit Srilaong
  • Varit Srilaong
  • Division of Postharvest Technology, School of Bioresources and Technology, King Mongkut?s University of Technology Thonburi, Bangkhuntein Rd., Thakham, Bangkhuntein, Bangkok, 10150, Thailand.
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Panida Boonyaritthongchai
  • Panida Boonyaritthongchai
  • Division of Postharvest Technology, School of Bioresources and Technology, King Mongkut?s University of Technology Thonburi, Bangkhuntein Rd., Thakham, Bangkhuntein, Bangkok, 10150, Thailand.
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Apiradee Uthairatanakij
  • Apiradee Uthairatanakij
  • Division of Postharvest Technology, School of Bioresources and Technology, King Mongkut?s University of Technology Thonburi, Bangkhuntein Rd., Thakham, Bangkhuntein, Bangkok, 10150, Thailand.
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  •  Received: 21 January 2015
  •  Accepted: 21 July 2015
  •  Published: 30 July 2015

Abstract

The aim of this study was to evaluate the concentrations of sodium nitroprusside (SNP), a nitric oxide donor, on postharvest ripening and quality of mango fruit cv. Nam Dok Mai No.4. The fruits were dipped in 1 or 2 mM of SNP solution for 30 min while control fruits were dipped in tap water for 30 min. After treatment, all fruits were stored for 18 days at 13°C and RH 90%. Both SNP doses showed significantly reduced ethylene production and respiration rate, maintained the fruit firmness, decreased the changes in total soluble solids and titratable acidity, and reduced fruit weight loss. The treatments of SNP also delayed color development in fruit peel and pulp. SNP-treated fruits showed higher L* and hue angle values and lower a* and b* values in comparison with control fruits. No significant differences were found between 1 and 2 mM SNP treatments. SNP applying on dose of 1mM to postharvest ‘Nam Dok Mai No.4’ mango fruits and then stored at 13°C changed ethylene production and respiration rates, maintained firmness pulp, decreased weight loss and slowed the changes in fruit peel and pulp color, total soluble solids (TSS)  and titratable acidity (TA).

 

Key words: Mangifera indica L., sodium nitroprusside, biochemical changes, fruit quality.