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Measuring consumer response to ‘Gala’ apples treated with 1-methylcyclopropene (1-MCP)

Authors:	Anna B Marin Ann E Colonna Koei Kudo Eugene M Kupferman James P Mattheis

Institution:	1. Food Innovation Center Experiment Station, Oregon State University, 1207 NW Naito Parkway, Portland, OR 97209, USA;2. Systems Science Department, Portland State University, 1604 SW 10th Avenue, Portland, OR 97201, USA;3. Washington State University Tree Fruit Research and Extension Center, 1100 N Western Avenue, Wenatchee, WA 98801, USA;4. Tree Fruit Research Laboratory, Agriculture Research Service, U.S. Department of Agriculture, 1104 North Western Avenue, Wenatchee, WA 98801, USA;1. College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China;2. College of Food science and technology, Hainan University, Haikou 570228, China;3. Tianjin Key Laboratory of Postharvest Physiology and Storage of Agricultural Products, National Engineering and Technology Research Center for Preservation of Agricultural Products,Tianjin 300384, China;1. College of Chemical Engineering, Northwest University Xi an, 710069, China;2. Bio-Resources Key Laboratory of Shaanxi Province, School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, 723001, China;1. Department of Plant Science, Postharvest Research Center, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS, Brazil;2. Federal Institute of Santa Catarina (IFSC), Campus Urupema, Knowledge Road, Center, Urupema, Santa Catarina, 88625-000 SC, Brazil;1. Department of Plant Science, Postharvest Research Center, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria, 97105-900, RS, Brazil;2. Federal Institute of Santa Catarina (IFSC), Campus Urupema, Senadinho Road, Center, Urupema, Santa Catarina, 88625-000, SC, Brazil;1. Department of Plant Science, Postharvest Research Center, Federal University of Santa Maria,Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS, Brazil;2. Federal Institute of Santa Catarina (IFSC), Campus Urupema, Senadinho Road, Center, Urupema, Santa Catarina, 88625-000, SC, Brazil

Abstract:	Post-harvest apple treatment with 1-methylcyclopropene (1-MCP) was previously found to inhibit fruit ripening but also to inhibit the production of volatile compounds that contribute to apple flavor. The first objective of this study was to determine if consumers could distinguish 1-MCP treated and untreated Gala apples Malus sylvestris L. (Mill.) var. domestica Borkh. Mansf.] following long-term storage. Chemical analysis showed 1-MCP treated fruit had reduced flavor volatiles compared to untreated fruit. Consumer difference tests showed they could distinguish between 1-MCP treated and untreated fruit. A second objective was to compare consumers’ acceptance for 1-MCP treated to untreated apples. Both 1-MCP treated and untreated apples received high overall liking scores that were not significantly different. Equal numbers of consumers indicated preference for 1-MCP treated and untreated fruit and there was no difference in purchase intent. However, subsets of consumers who eat Gala, Fuji or Red Delicious apples showed preference for untreated over 1-MCP treated fruit compared to consumers who do not eat these varieties.

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