Articles
AN APPROACH TO INVASIVE AND NON-INVASIVE QUALITY ASSESSMENT ON PLUMS WITH EDIBLE COATINGS
Article number
858_65
Pages
425 – 429
Language
English
Abstract
The effects of edible coatings on the shelf life of plums (Prunus salicina Lindl. Sapphire) were studied using Semperfresh with/without 0.2% sorbitol as plasticizer.
The plums were stored at 20°C and 85% relative humidity.
Changes in mass loss, firmness, colour (L*, a* and hue angle), soluble solids content (SSC), pH, titratable acidity, ethylene, CO2, malondialdehyde (MDA), and VIS/NIR reflectance spectra were recorded at 2-day intervals.
Edible coating with Semperfresh was effective in delaying the increase of pH and MDA and the loss of titratable acidity and L*. The incorporation of sorbitol revealed beneficial effects on flesh firmness after 4 d of storage.
However, no significant difference was found in mass loss, SSC, a*, ethylene and CO2. Fruit ripening during the experimental period was measurable in the VIS (350-750 nm) and NIR (750-1400 nm) wavelength ranges due to decrease in the fruit chlorophyll content and also water loss, respectively.
No differences in reflectance spectra of coated and uncoated plums were observed.
The plums were stored at 20°C and 85% relative humidity.
Changes in mass loss, firmness, colour (L*, a* and hue angle), soluble solids content (SSC), pH, titratable acidity, ethylene, CO2, malondialdehyde (MDA), and VIS/NIR reflectance spectra were recorded at 2-day intervals.
Edible coating with Semperfresh was effective in delaying the increase of pH and MDA and the loss of titratable acidity and L*. The incorporation of sorbitol revealed beneficial effects on flesh firmness after 4 d of storage.
However, no significant difference was found in mass loss, SSC, a*, ethylene and CO2. Fruit ripening during the experimental period was measurable in the VIS (350-750 nm) and NIR (750-1400 nm) wavelength ranges due to decrease in the fruit chlorophyll content and also water loss, respectively.
No differences in reflectance spectra of coated and uncoated plums were observed.
Authors
H.L. Eum, M. Zude, D.K. Hwang
Keywords
edible coating, firmness, malondialdehyde, shelf life
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