Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Maho Umino"'
Autor:
Mayu Onozato, Wataru Shinohara, Yuichiro Osaka, Tatsuya Sakamoto, Maho Umino, Atsuko Nishigaki, Kenji Okoshi, Takeshi Fukushima
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Abstract In this study, we investigated the composition of free amino acids and lactate (Lac) in polychaetes in river estuaries and inner bays using chromatographic techniques. Both l-amino acids and d-amino acids (d-asparagine, d-alanine (d-Ala), d-
Externí odkaz:
https://doaj.org/article/053a6b21f61449f08ddebbeee5cc7603
Publikováno v:
Molecules, Vol 28, Iss 4, p 1556 (2023)
Optically active citramalic acid (CMA) is naturally present as an acidic taste component in fruits, such as apples. The absolute configuration of CMA in such fruits was investigated by high-performance liquid chromatography–tandem mass spectrometry
Externí odkaz:
https://doaj.org/article/ac7ed9ee39eb425094da927e41098ceb
Publikováno v:
Molecules, Vol 28, Iss 4, p 1773 (2023)
Black garlic is currently attracting interest as a health food and constituent of commercial supplements; however, no data regarding the d-amino acids within black garlic have been reported. Therefore, the amino acid compositions of methanol extracts
Externí odkaz:
https://doaj.org/article/a43a47f1c82b44ef97912b12272115f1
Autor:
Shusuke Uekusa, Mayu Onozato, Tatsuya Sakamoto, Maho Umino, Hideaki Ichiba, Kenji Okoshi, Takeshi Fukushima
Publikováno v:
Molecules, Vol 26, Iss 12, p 3498 (2021)
Taurine (Tau) has some important ameliorating effects on human health and is present in bivalve. For the selective analysis of Tau with other amino acids, we designed a derivatization reagent, 2,5-dioxopyrrolidin-1-yl(4-(((2-nitrophenyl)sulfonyl)oxy)
Externí odkaz:
https://doaj.org/article/c66bcfc72ce64bcf8ac03503f4305fb9
Publikováno v:
Journal of chromatography. A. 1675
A chiral derivatization reagent for application in LC-tandem mass spectrometry (LC-MS/MS)-based detection, benzyl 5-(2-aminoethyl)-3-methyl-4-oxoimidazolidine-1-carboxylate (CIM-C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8046bd3d60800e9b4c1cb335ce0b40a
https://pubmed.ncbi.nlm.nih.gov/35679771
https://pubmed.ncbi.nlm.nih.gov/35679771
Publikováno v:
Biomedical chromatography : BMCREFERENCES. 36(5)
Kynurenine (KYN) is synthesized from an essential amino acid, tryptophan, by tryptophan 2,3-dioxygenase or indoleamine 2,3-dioxygenase via N-formyl-KYN in vivo. Subsequently, KYN acts as a precursor of some neuroactive metabolites such as kynurenic a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13c1256f10af56762c9d553ef06d89eb
https://pubmed.ncbi.nlm.nih.gov/34978092
https://pubmed.ncbi.nlm.nih.gov/34978092
Autor:
Maho Umino, Takeshi Fukushima, Shusuke Uekusa, Mika Shirao, Tatsuya Sakamoto, Mayu Onozato, Hideaki Ichiba
Publikováno v:
Journal of chromatography. A. 1652
We designed and synthesized three novel derivatization reagents bearing chiral 4-imidazolidinone, namely succinimidyl 2-(3-((benzyloxy)carbonyl)-1-methyl, ethyl, and -phenyl-5-oxoimidazolidin-4-yl)acetates (CIMs), for use in liquid chromatography-tan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2f903fc9241e1fec0fe96e384c4f968
https://pubmed.ncbi.nlm.nih.gov/34192611
https://pubmed.ncbi.nlm.nih.gov/34192611
Autor:
Maho Umino, Mayu Onozato, Shusuke Uekusa, Takeshi Fukushima, Tatsuya Sakamoto, Hideaki Ichiba
Publikováno v:
Biomedical chromatography : BMCREFERENCES. 35(5)
Herein, determination of an anti-epileptic drug, (±)-vigabatrin (VB), was performed by reversed-phase HPLC with fluorimetric detection using a newly designed and synthesised fluorescence derivatisation reagent, 2,5-dioxopyrrolidin-1-yl (4-(((2-nitro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8c4051929f173b0ba4b0c8ae0889fce
https://pubmed.ncbi.nlm.nih.gov/33377241
https://pubmed.ncbi.nlm.nih.gov/33377241
Publikováno v:
Journal of Food Composition and Analysis. 106:104282
Determination of malic acid (MA) in commercial drinks is imperative to assure the quality of taste and safety of the product to human health. In this study, a column-switching high-performance liquid chromatography (HPLC)-fluorescence detection metho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97717eed9cf94cb14a212418a4b0131b
https://doi.org/10.1016/j.jfca.2021.104282
https://doi.org/10.1016/j.jfca.2021.104282
Autor:
Mayu Onozato, Shusuke Uekusa, Takeshi Fukushima, Maho Umino, Tatsuya Sakamoto, Hideaki Ichiba
Publikováno v:
Journal of Chromatography B. 1179:122866
Mixed-mode chromatography—comprising a mixed phase with reversed and ionic phases, enabling hydrophobic and ion-exchange interactions simultaneously—was applied to identify vigabatrin enantiomers by HPLC with pre-column fluorescence derivatizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::317b78b53d006acd98f8b920769b19fe
https://doi.org/10.1016/j.jchromb.2021.122866
https://doi.org/10.1016/j.jchromb.2021.122866