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ARS Home » Southeast Area » Fort Pierce, Florida » U.S. Horticultural Research Laboratory » Citrus and Other Subtropical Products Research » Research » Publications at this Location » Publication #377558
Research Project: Determination of Flavor and Healthful Benefits of Florida-Grown Fruits and Vegetables and Development of Postharvest Treatments to Optimize Shelf Life an Quality for Their Fresh and Processed Products

Location: Citrus and Other Subtropical Products Research

Title: Effect of mono and bilayer of carnauba wax based nano-emulsion and HPMC coatings on post-harvest quality of 'Redtainung' papaya

Author
item MIRANDA, MARCELA - Sao Paulo State University (UNESP)
item MARIN, ANNA - Polytechnical University Of Valencia
item Sun, Xiuxiu
item Plotto, Anne
item Bai, Jinhe
item ASSIS, ODILIO - Embrapa
item FERREIRA, MARCOS - Embrapa
item BALDWIN, ELIZABETH - Retired ARS Employee

Submitted to: International Symposium on Agricultural & Food Processing Wastes Proceeding
Publication Type: Proceedings
Publication Acceptance Date: 10/24/2019
Publication Date: 12/22/2019
Citation: Miranda, M., Marin, A., Sun, X.N., Plotto, A., Bai, J., Assis, O., Ferreira, M., Baldwin, E.A. 2019. Effect of mono and bilayer of carnauba wax based nano-emulsion and HPMC coatings on post-harvest quality of 'Redtainung' papaya. International Symposium on Agricultural & Food Processing Wastes Proceeding. 1:705-709.

Interpretive Summary:

Technical Abstract: Coatings are alternatives for post-harvest product conservation since they can provide internal atmosphere changes, reduce moisture loss, and in some cases, act as an antimicrobial agent. This work aimed to evaluate an experimental carnauba wax nanoemulsion coating effects on papaya for postharvest fruit quality. Experimental testes were realized with ‘Red Tainung’ papaya at USDA-ARS-Florida-USA. Six treatments were applied : i) fruits were coated with single layer of HPMC (hydroxy methyl propyl cellulose) at 0.5% (w/v); ii) carnauba wax nanoemulsion coating (CWNE) at 18% (w/v); iii) a composed coating with CWNE and HPMC; iv) bilayer “A” composed by CWNE (first layer) and HPMC (second layer), v) bilayer “B” composed by HPMC+CWNE and vi) fruits coated with water. Weight loss, internal CO2 and O2, peel color were evaluated after storage at 20 °C for 6 days. Uncoated fruits and treated with HPMC resulted in the highest weight loss. Fruits treated with bilayer “B” showed the lowest weight loss, however not different to other coatings containing CWNE. There were no differences for peel color. The highest levels of CO2 were found for fruits treated with bilayer “B” along with the lowest O2 among the other treatments. Control presented the lowest levels of CO2 and the highest O2. The obtained results showed the potential to combine CWNE and HPMC applying monolayer of composed coating or bilayer “B” combination to improve papaya post-harvest quality.