Understanding American and Chinese consumer acceptance of ‘Redglobe’ table grapes

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‘In-store’ consumer acceptance tests were performed on a group of 400 American consumers and 250 native Chinese consumers to determine the relationship between ripe soluble solids concentration (SSC) and titratable acidity (TA) on consumer acceptance of ‘Redglobe’ grapes for different ethnic groups. For this, a group of Caucasian, Hispanic and Chinese-American consumers and a group of native Chinese consumers tasted monadically four individual berry half samples at room temperature with SSC ranging from 10 to 20% and TA from 0.30 to 1.80%. Grapes with SSC <16.1% were accepted by 70% of the American consumers and 47% of the Chinese consumers. However, the percentage of consumers that disliked these grapes was the same (~21) for both ethnic groups. The difference in the percentages of Chinese and American consumers accepting the grapes was due to the ‘neither like nor dislike’ category. Chinese consumers chose the ‘neither like nor dislike’ category in approximately 34% of the cases, while approximately only 7% of the American consumers chose it. Our data confirmed that ‘Redglobe’ consumer acceptance is highly related to SSC:TA ratio but within a given SSC and TA level. In contrast to American consumers, Chinese consumer acceptance was not related to SSC:TA ratio when TA >0.80%. Thus, our work indicates that high TA affects consumer acceptance in relation to SSC:TA ratio depending on ethnic background.

Carlos H. Crisosto
Gayle M. Crisosto
Postharvest Biology and Technology