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Effects of mechanical injuries on physiology, biochemistry and quality of papaya fruit from Solo group

Grant number: 06/05928-8
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2007
Effective date (End): January 31, 2009
Field of knowledge:Agronomical Sciences - Agronomy
Principal Investigator:Angelo Pedro Jacomino
Grantee:Ana Elisa de Godoy
Home Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil


Papaya (Carica papaya L.) is one of the fruit wich is most consumed by Brazilians and also of the fruit which register the biggest rate of postharvest loss. The postharvest losses of papaya are caused by several injuries such as by impact, compression, cuts and diseases. Consequently, its handle since harvest until the final consumer has to be done very carefully. The objective of this project is identify and describe the main mechanical injuries that occur in papaya ‘Sunrise Solo’ and also to have an estimation of its influence in the quality of papaya fruit. Visits at CEAGESP will be done in order to collect the data and study the main kinds of mechanical damages that occur in the chain of papaya comercialization. In this avaliation will be showed a representative number of fruit to quantify and describe the mechanical injuries. Choosing the mechanical injuries, three principals injuries will be reproduced in fruit in the laboratory. The damages application will de done in the Postharvest Laboratory of Vegetable Production Department at ESALQ – USP, in Piracicaba-SP, where the fruit after being damaged will be stored at 22ºC and 80-90% relative umidity and will be checked the post harvest development in 10 days of storage. Will be done determinations of physiology (rate respiration and ethylene production), physical, chemical characteristics (water loss, skin color, firmness pulp, trible acidity and ascorbic acid), biochemistry (ACC enzime (1-aminocyclipropane – 1- carboxylate) oxidase activity and nuclear magnetic resonance imaging. (AU)

Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
GODOY, Ana Elisa de. Injúrias mecânicas e seus efeitos na fisiologia e na qualidade de mamões \'Golden\'. 2009. Master's Dissertation - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz Piracicaba.

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