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Fox(1932)第一次偶然发现不同人对苯硫脲的尝味能力不同,有的人能尝出其结晶的苦味,另一些人则尝不出苦味。Blakeslee(1932)在103个家系中,用阈值法测定苯硫脲的尝味能力,结果表明味盲决定于隐性基因(tt)Hartmann(1939)对比了结晶法,纸片法和阈值法。他认为阈值法的测定结果较为精确。李璞等人(1965)测定,1,050黑龙江省人群中用阈值法测定较为精确,结果表明苯硫脲的尝味能力存在着性别和年令的差异。刘鸿权等人(1979)用阈值
For the first time, Fox (1932) found that different people had different tastes of phenylthiourea. Some people could taste the bitterness of their crystals while others did not taste bitterness. Blakeslee (1932) measured the tasting power of phenylthiourea using a threshold method in 103 pedigrees. The results show that the taste-blindness is determined by the triton Hartmann (1939) versus the crystallization, disk and thresholding methods. He thinks the threshold method is more accurate. Li Pu et al (1965) measured, 1,050 Heilongjiang Province, the threshold method to determine the more accurate, the results show that the smell of thiourea tasting ability there is gender and year-end differences. Liu Hongquan et al. (1979) use thresholds