As shown in Fig. 1C, the XAD-0% resembled mostly the SS fractions,
especially having almost the same scores in umami and salty
taste qualities. Their umami, salty and sweet scores were much
higher than the XAD-20% and XAD-40% fractions. However, the
XAD-20% and XAD-40% fractions resembled greatly, and exhibited
considerably greater bitterness than the SS and XAD-0% fractions.
Meanwhile, the four fractions had very similar scores for the sour
taste. Therefore, the taste of XAD-0% was much better than the
XAD-20% and XAD-40% fractions, and this conclusion was consistent
with the results of the analysis of amino acid composition.
And therefore, the umami taste was not determined by the ratio
of umami amino acids in peptides to total umami amino acids.
Results were also reported by Masuda et al. who discovered that
Phe-Ala-Leu-Pro-Glu-Tyr-Leu-Lys was tasted as bitter (Masuda &
Kitabatake, 2006), and Okumura found that Ala-Pro-Pro-Pro-Pro-
Ala-Glu-Val-His-Glu-Val-Val-Glu was mainly sour taste
(Okumura, Yamada, & Nishimura, 2004), which indicating that
the peptides with umami amino acids did not always elicit umami
amino acids. It indicated that the peptides with umami amino
acids did not always elicit umami taste. In addition to the
As shown in Fig. 1C, the XAD-0% resembled mostly the SS fractions,especially having almost the same scores in umami and saltytaste qualities. Their umami, salty and sweet scores were muchhigher than the XAD-20% and XAD-40% fractions. However, theXAD-20% and XAD-40% fractions resembled greatly, and exhibitedconsiderably greater bitterness than the SS and XAD-0% fractions.Meanwhile, the four fractions had very similar scores for the sourtaste. Therefore, the taste of XAD-0% was much better than theXAD-20% and XAD-40% fractions, and this conclusion was consistentwith the results of the analysis of amino acid composition.And therefore, the umami taste was not determined by the ratioof umami amino acids in peptides to total umami amino acids.Results were also reported by Masuda et al. who discovered thatPhe-Ala-Leu-Pro-Glu-Tyr-Leu-Lys was tasted as bitter (Masuda &Kitabatake, 2006), and Okumura found that Ala-Pro-Pro-Pro-Pro-Ala-Glu-Val-His-Glu-Val-Val-Glu was mainly sour taste(Okumura, Yamada, & Nishimura, 2004), which indicating thatthe peptides with umami amino acids did not always elicit umamiamino acids. It indicated that the peptides with umami aminoacids did not always elicit umami taste. In addition to the
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