Descriptive analysis of black walnut cultivars and relationship between consumer acceptance and descriptive analysis of black walnuts in a sugar cookie base

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dc.contributor.author Miller, Ashley E.
dc.date.accessioned 2012-09-04T14:06:43Z
dc.date.available 2012-09-04T14:06:43Z
dc.date.issued 2012-09-04
dc.identifier.uri http://hdl.handle.net/2097/14638
dc.description.abstract Researchers evaluated the flavor characteristics of seven black walnut (Juglans nigra L.) cultivars: Brown Nugget, Davidson, Emma K, Football, Sparks 127, Sparrow, and Tomboy using descriptive sensory analysis. Seven trained panelists developed a lexicon for the black walnuts and scored the intensities of the samples for 22 flavor and taste attributes. Results showed that the 7 samples differed significantly (P ≤ 0.05) on 13 of the attributes. For the majority of the attributes, only Emma K differed from the rest of the cultivars by being characterized with lower scores for black walnut ID, overall nutty, nutty-grain-like, nutty-buttery, floral/fruity, oily, and overall sweet. It also was higher in acrid, burnt, fruity-dark, musty/earthy, rancid, and bitter attributes. Researchers then incorporated the black walnut cultivars into a simple cookie recipe and evaluated the samples for differences in flavor attributes using the same trained panelists. Nine of the 25 attributes differed significantly across cultivars: black walnut ID, overall nutty, nutty-buttery, brown, toasted, acrid, rancid, overall sweet, and sweet (P ≤ 0.05). Lower mean scores in black walnut ID, overall nutty, and sweet and higher mean scores in rancid and acrid characterized the Emma K cookie. A PCA biplot revealed that cookies with Football, Sparks 127, and Sparrow walnuts related with one another and the attributes nutty-woody, leavening, and piney. A consumer acceptance test for six of the cookies (Tomboy cultivar was excluded) was also performed. There were four significant clusters of consumers that differed in their acceptance of the cookie samples. Cluster 1 preferred Football, clusters 2 and 3 each showed no overall preference, and cluster 4 preferred Emma K suggesting a set of niche consumers for black walnut cookies. Results presented in this paper can assist black walnut growers in determining which cultivars to plant and harvest. By knowing which cultivars have the most desirable flavor characteristics, growers can focus time and resources on select cultivars, therefore resulting in higher quality black walnuts as products to be sold to consumers in various formats. By consciously choosing which cultivars to harvest, black walnut growers can meet market demand and increase profit. en_US
dc.language.iso en_US en_US
dc.publisher Kansas State University en
dc.subject Sensory en_US
dc.subject Descriptive analysis en_US
dc.subject Black walnut en_US
dc.subject Consumer acceptance en_US
dc.title Descriptive analysis of black walnut cultivars and relationship between consumer acceptance and descriptive analysis of black walnuts in a sugar cookie base en_US
dc.type Thesis en_US
dc.description.degree Master of Science en_US
dc.description.level Masters en_US
dc.description.department Food Science - Human Nutrition en_US
dc.description.advisor Delores Chambers en_US
dc.subject.umi Food Science (0359) en_US
dc.date.published 2012 en_US
dc.date.graduationmonth December en_US


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