abstract
Umami-taste active components in pine-mushrooms (Tricholoma matsutake Sing.) were compared
according to different grades (first, second, third, and fourth) and parts (pileus and stipe). The contents
of umami-taste active free amino acids, such as aspartic acid and glutamic acid, decreased in the order
of second grade > third grade > fourth grade > first grade. Also, the contents of umami-taste active 50-
nucleotides were highest and lowest in pine-mushrooms of second and first grades, respectively. All
the contents of umami-taste active amino acids and 50-nucleotides were higher in the pileus than in
the stipe, irrespective of pine-mushroom grades. Equivalent umami concentration values of pine-mushrooms
ranged from 13.26 (in the stipe of first grade) to 204.26 g (in the pileus of second grade) per 100 g.
All the quantitative data obtained in this study are highly consistent with our previously data on umami
sensory intensities of pine-mushrooms.
abstract
Umami-taste active components in pine-mushrooms (Tricholoma matsutake Sing.) were compared
according to different grades (first, second, third, and fourth) and parts (pileus and stipe). The contents
of umami-taste active free amino acids, such as aspartic acid and glutamic acid, decreased in the order
of second grade > third grade > fourth grade > first grade. Also, the contents of umami-taste active 50-
nucleotides were highest and lowest in pine-mushrooms of second and first grades, respectively. All
the contents of umami-taste active amino acids and 50-nucleotides were higher in the pileus than in
the stipe, irrespective of pine-mushroom grades. Equivalent umami concentration values of pine-mushrooms
ranged from 13.26 (in the stipe of first grade) to 204.26 g (in the pileus of second grade) per 100 g.
All the quantitative data obtained in this study are highly consistent with our previously data on umami
sensory intensities of pine-mushrooms.
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