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dc.contributor.authorMenuel, Antoinette
dc.date.accessioned2014-03-04T20:00:02Z
dc.date.available2014-03-04T20:00:02Z
dc.date.issued2011-05
dc.identifier.othermenuel_antoinette_201105_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/menuel_antoinette_201105_ms
dc.identifier.urihttp://hdl.handle.net/10724/27230
dc.description.abstractThe effects of four palate cleansers at detecting sweetness, bitterness and pungency in sweet onions were studied. Evaluation of scores for all samples determined the combination of water and unsalted top crackers was the best palate cleanser for detecting sweetness. There were no significant differences between bitterness and pungency of onions indicating none of the palate cleansers studied are ideal for improved detection of either attribute. In a second study 22 sweet onion cultivars were tested for degree of sweetness, pungency and bitterness by 9 judges. These measures were used to develop models from data collected from the same onions using wide-aperture spectrometry. The sensory data were also compared with chemical measures obtained on the same cultivars made during the same season from the same plots. No models from the spectrometric data accurately predicted the sensory scores. No significant correlation was observed between the sensory and chemical measures.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectsweet onion
dc.subjectalkenyl cysteine sulfoxide
dc.subjectpungency
dc.subjectsweetness
dc.subjectbitterness
dc.subjectspectrometry
dc.subjectbrix
dc.subjectenzymatically produced pyruvate
dc.titlePalate cleanser effectiveness in evaluating sweetness, bitterness, and pungency of sweet onions and sensory, chemical, and instrumental techniques
dc.typeThesis
dc.description.degreeMS
dc.description.departmentFood Science and Technology
dc.description.majorFood Science
dc.description.advisorRobert Shewfelt
dc.description.committeeRobert Shewfelt
dc.description.committeeHong Zhuang
dc.description.committeeChi Thai


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