Taste Blindness and Race

Parr, Leland W.

doi:10.1093/oxfordjournals.jhered.a103914

Cited by 48 publications

(13 citation statements)

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“…Although significant genotype-phenotype relationships were observed within each of the populations examined in those studies, results were based on a very small number of individuals. For example, Kim et al [9] examined the relationship between TAS2R38 genotype and PTC taste sensitivity in 51 Europeans, 5 Paki- We observed a small proportion of non-tasters among Asians, which is consistent with previous reports [17,18] . Variability in taster ratings across ethnocultural groups corresponded with variability in the TAS2R38 allele frequency.…”

Section: Discussionsupporting

confidence: 86%

<i>TAS2R38 </i>Genotypes and Phenylthiocarbamide Bitter Taste Perception in a Population of Young Adults

Khataan¹,

Stewart²,

Brenner³

et al. 2009

Lifestyle Genomics

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Background/Aims:TAS2R38 belongs to the TAS2R bitter taste receptor gene family and polymorphisms are associated with differences in bitter taste perception of phenylthiocarbamide (PTC) and 6-n-propylthiouracil (PROP). The objectives were to test whether the genotype-phenotype relationship varies between ethnocultural groups and whether a filter paper method can predict TAS2R38 genotype. Methods: Subjects (n = 911) aged 20–29 rated the intensity of a PTC-containing filter paper on a scale of 1–9, from ‘not at all bitter’ to ‘extremely bitter’. The TAS2R38 A49P polymorphism was detected by real-time PCR. Results: The overall frequency of the 49A variant was 0.47 and the AA, AP, and PP genotype distribution was 0.24, 0.45 and 0.31, respectively. Those with AA, AP, or PP genotypes had mean bitterness rating scores of 2.3, 4.9, and 5.9, respectively. The 49A variant frequency was significantly lower among Asians (28%) as compared to Caucasians (55%), South Asians (60%) or others (56%) (p < 0.0001). The genotype-phenotype relationship was similar across ethnocultural groups, however, a stronger genotype-phenotype association was observed among women as compared to men. Conclusion: Our findings show that a simple PTC filter paper tasting method strongly predicts TAS2R38 genotype, and that the genotype-phenotype association is similar among ethnocultural groups.

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Section: Discussionsupporting

confidence: 86%

<i>TAS2R38 </i>Genotypes and Phenylthiocarbamide Bitter Taste Perception in a Population of Young Adults

Khataan¹,

Stewart²,

Brenner³

et al. 2009

Lifestyle Genomics

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show abstract

“…Furthermore, this would be of great practical interest too, as many investigations-some of them rather comprehensive-have been carried out with P.T.C. in dry form for the purpose of tracing racial differences (Parr, 1934;Blakeslee, 1936;Fukuoka, 1936), besides in studies on linkage.…”

Section: Taste D I F F E R E N C E S I N G E N E T I C I N V E S T I mentioning

confidence: 99%

Application of Individual Taste Difference Towards Phenyl‐thio‐carbamide in Genetic Investigations

Hartmann¹

1939

Annals of Eugenics

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“…Chinese, Asian) were not significant. Although some studies have found differences in PROP responses when comparing subjects belonging to different ethnic groups (Parr, 1934;Tepper, 2008), our results are in agreement with the more recent study of Genick et al (2011) in which differences in PROP status between subjects varying in ethnicity were not observed. For both groups, the proportions of NT was unexpectedly higher than the common ratio in an average population (approx.…”

Section: Participant Characteristicssupporting

confidence: 93%

Exquisitely heterogeneous : Combining different food textures to boost palatability

Santagiuliana¹

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Table of contents 9 Chapter 1 General introduction 25 Chapter 2 Heterogeneity to the limit. Mechanical properties affect detectability of perceived texture contrast in heterogeneous food gels 49 Chapter 3 Not only particle size matters: Effect of mechanical contrast on sensory perception of heterogeneous liquid and semi-solid foods 79 Chapter 4 As good as expected? How consumer expectations and addition of vegetable pieces to soups influence sensory perception and liking Chapter 5 Don't judge new foods by their appearance! How visual and oral sensory cues affect sensory perception and liking of novel, heterogeneous foods Chapter 6 Heterogeneous bites: How addition of particles to yoghurt affects expectations, sensory perception and oral behavior of consumers differing in age Chapter 7 A gritty story. Exploring variability in detection thresholds of microparticles through participant characteristics Chapter 8 Directing attention. Strategies to compensate for undesired texture perception in foods Chapter 9 General discussion

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Taste Blindness and Race

Cited by 48 publications

References 0 publications

<i>TAS2R38 </i>Genotypes and Phenylthiocarbamide Bitter Taste Perception in a Population of Young Adults

<i>TAS2R38 </i>Genotypes and Phenylthiocarbamide Bitter Taste Perception in a Population of Young Adults

Application of Individual Taste Difference Towards Phenyl‐thio‐carbamide in Genetic Investigations

Exquisitely heterogeneous : Combining different food textures to boost palatability

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