Abstract
This research was part of a project which was developed on the hypotheses that edible coatings can beformulated to give the same effect as modified atmosphere storage in terms of controlling the internal gas composition infruits and vegetables. To accomplish controlled gas exchange, knowledge of gas diffusivities through fruits and vegetablesis needed to determine the optimal edible coating formulation and thickness. Oxygen diffusivities of the skin and flesh ofthree varieties of apples (Red Delicious, Rome Beauty, and Granny Smith) were tested using a specially designed cell.Skin or flesh samples of apples were retained in the cell in such a way that gas could flow across both faces of a sample.Initially, nitrogen was flushed across both sides of a sample until an oxygen free condition around the sample wasensured. Then oxygen was used to replace the nitrogen stream on one side of the sample and the amount of oxygendiffusing through a sample measured. Ficks first and second diffusion theories were applied to the data. Results indicatestorage had a different effect on different varieties and the gas diffusivity of skin was much less than of flesh.Keywords. Apple, Oxygen, Diffusivity, Edible coatings, Modified atmosphere storage.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
