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From:
Published online 2010 November 17. doi: 10.1371/journal.pone.0014030

Figure 4

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Humans sensory analyses.

(A–B) Smell discrimination by humans. (A) Smell discrimination with all transgenic lines. A filled box indicates that the odor of the sample was described as more intense by the subject. (B) Triangle test with fresh and oxidized samples. The number of correct answers to be significant is 11 (P≤0.03) correct responses for the group tested with fresh samples (n = 19) and 25 (P≤0.001) correct responses for the group tested with oxidized samples (n = 42). The number of correct responses (+) was determined by counting the number of participants that chose the unique sample of the three. The number of incorrect responses (−) equals the number of participants not choosing the distinct sample of the three. The percentage of correct and incorrect responses is depicted and the number of the corresponding responses is shown inside each bar. Two stars represents statistically significant differences at P≤0.03 and three stars represents statistically significant differences at P≤0.001. (C–E) Organoleptic evaluations. (C) Hedonic rating. Being 1: “not at all pleasant” and being 9: “very pleasant”. No statistical differences were found among samples according to the ANOVA test. (D) Comments describing that the odor of the sample was more intense. The percentage of comments is depicted and the number of the corresponding comments is shown inside or above each bar. (E) Comments describing that the odor of the sample evoked the sense-impression of a familiar vegetable. The percentage of comments is depicted and the number of the corresponding comments is shown inside or above each bar.

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