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The unpleasant bitter taste found in many nutritious vegetables may deter people from consuming a healthy diet. We investigated individual differences in taste perception and whether these differences influence the effectiveness of bitterness masking. To test whether phenylthiocarbamide (PTC) `supertasters' also taste salt and sugar with greater intensity, as suggested

The unpleasant bitter taste found in many nutritious vegetables may deter people from consuming a healthy diet. We investigated individual differences in taste perception and whether these differences influence the effectiveness of bitterness masking. To test whether phenylthiocarbamide (PTC) `supertasters' also taste salt and sugar with greater intensity, as suggested by Bartoshuk and colleagues (2004), we infused strips of paper with salt water or sugar water. The bitterness rating of the PTC strip had a significant positive linear relationship with ratings of both the intensity of sweet and salt, but the effect sizes were very low, suggesting that the PTC strip does not give a complete picture of tasting ability. Next we investigated whether various seasonings could mask the bitter taste of vegetables and whether this varied with tasting ability. We found that sugar decreased bitterness and lemon decreased liking for vegetables of varying degrees of bitterness. The results did not differ by ability to taste any of the flavors. Therefore, even though there are remarkable individual differences in taste perception, sugar can be used to improve the initial palatability of vegetables and increase their acceptance and consumption.
ContributorsWilkie, Lynn Melissa (Author) / Phillips, Elizabeth D. (Thesis advisor) / Cohen, Adam (Committee member) / Johnston, Carol (Committee member) / Arizona State University (Publisher)
Created2012
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Description
Relevant literature was analyzed alongside interview data from participants concerning issues of anti-Semitism, Israel affiliation, and Jewish identity. Qualitative coding and theme identification were used to determine possible relationships among the variables, with special attention to the role anti-Semitism plays in influencing Israel affiliation. Semi-structured interviews were conducted with 9

Relevant literature was analyzed alongside interview data from participants concerning issues of anti-Semitism, Israel affiliation, and Jewish identity. Qualitative coding and theme identification were used to determine possible relationships among the variables, with special attention to the role anti-Semitism plays in influencing Israel affiliation. Semi-structured interviews were conducted with 9 young American Jews (18-24) currently enrolled as undergraduate students in universities. The results revealed that continuity of the Jewish people is a core value for many American Jews. Anti-Semitism is often under reported by young American Jews, but for some anti-Israel sentiments are conflated with anti-Semitism. It was also observed that knowledge of anti-Semitism plays an integral role in shaping Jewish identity. Finally, it was found that Israel affiliation polarizes the Jewish community, often resulting in the exclusion of left-leaning Jews from the mainstream Jewish community. These results were analyzed within racial, social, and political frameworks.
ContributorsHobbs, Emma Caroline (Author) / Adelman, Madelaine (Thesis advisor) / Shabazz, Rashad (Committee member) / Cohen, Adam (Committee member) / Langille, Timothy (Committee member) / Arizona State University (Publisher)
Created2018