Machida Koichi

Profile Information

Affiliation: research associate, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences

Degree: 博士（薬学）(東京薬科大学)

J-GLOBAL ID: 201901004861445543
researchmap Member ID: B000365985

Research Interests

Research Areas

Life sciences / Pharmaceuticals - analytical and physicochemistry /

Research History

Apr, 2019 - Present

東京薬科大学, 薬学部医療衛生薬学科分析化学教室, 助手

Committee Memberships

2023 - Present

幹事, 日本分析化学会関東支部若手の会

Papers

Electrochemical Analysis for Total Alkalinity of Water by the Measurement of Cathodic Prepeak of Quinone Caused by Surplus Acid

Akira Kotani, Miyu Sakazume, Koichi Machida, Kazuhiro Yamamoto, Hideki Hakamata

Chemical and Pharmaceutical Bulletin, 72(3) 266-270, Mar 1, 2024
Statistical reliability of a relative standard deviation of chromatographic peak area estimated by a chemometric tool based on the FUMI theory

Akira Kotani, Ryo Watanabe, Yuzuru Hayashi, Koichi Machida, Hideki Hakamata

Journal of Pharmaceutical and Biomedical Analysis, 237 115777-115777, Jan, 2024
Determination of oxalic acid in herbal medicines by semi-micro hydrophilic interaction liquid chromatography coupled with electrochemical detection

Akira Kotani, Hisanobu Ishikawa, Takashi Shii, Minpei Kuroda, Yoshihiro Mimaki, Koichi Machida, Kazuhiro Yamamoto, Hideki Hakamata

Analytical Sciences, 39(4) 441-446, Jan 13, 2023
Gradient elution of hydroxyacetophenones by supercritical fluid chromatography with electrochemical detection

Kazuhiro Yamamoto, Koichi Machida, Akira Kotani, Hideki Hakamata

Analytical Sciences, 39(5) 761-765, Dec 28, 2022
Determination of Amino Acidity in Japanese Sake Based on the Voltammetric Measurement of Surplus Acid by Quinone Reduction

Akira KOTANI, Jumpei WATANABE, Koichi MACHIDA, Kazuhiro YAMAMOTO, Hideki HAKAMATA

Electrochemistry, 90(11) 117002-117002, Nov 15, 2022 Peer-reviewed
Simultaneous determination of deuterium-labeled ergosterol and brassicasterol in stroke-prone spontaneously hypertensive rats by ultra-high performance liquid chromatography-electrospray ionization-tandem mass spectrometry

Koichi Machida, Yuji Koseki, Akira Kotani, Kazuhiro Yamamoto, Tsuyoshi Miura, Hideki Hakamata

Analytical Methods, 14 4879-4885, Oct 28, 2022 Peer-reviewedLead author
Electrochemical determination of free amino nitrogen in aged lean beef by the measurement of surplus acid after neutralization

Akira Kotani, Kaito Shimomura, Kazuhiro Yamamoto, Koichi Machida, Hideki Hakamata

Analytical Sciences, 39(1) 109-113, Oct 14, 2022
Electrochemical determination of emodin in acidic media by high-performance liquid chromatography and its application to Polygoni Multiflori Radix samples

Aya Shiozawa, Yusuke Kojima, Akira Kotani, Koichi Machida, Kazuhiro Yamamoto, Hideki Hakamata

Analytical Sciences, 38(11) 1449-1454, Aug 22, 2022
Effects of digital processing on repeatability assessment of a multiple reaction monitoring liquid chromatography–tandem mass spectrometry system by ISO 11843‐7

Koichi Machida, Akira Kotani, Yuzuru Hayashi, Hideki Hakamata

Journal of Mass Spectrometry, 57(8), Aug, 2022 Peer-reviewedLead author
Supercritical fluid chromatography with post‐column addition of supporting electrolyte solution for electrochemical determination of tocopherol and tocotrienol isomers

Kazuhiro Yamamoto, Takuma Nishimura, Koichi Machida, Akira Kotani, Hideki Hakamata

Journal of Separation Science, 45(10) 1797-1805, Mar 17, 2022 Peer-reviewed
Effects of sampling rate and noise filter processing on repeatability assessment in UHPLC with ultraviolet detection based on the ISO 11843-7

Koichi Machida, Ryo Watanabe, Akira Kotani, Yuzuru Hayashi, Hideki Hakamata

Analytical Sciences, 38(1) 183-189, Jan, 2022
Determination of Phenolic Compounds in Beverages by Three-Flow Channel Isocratic HPLC with Electrochemical Detections Using a Column-Switching Technique

Yuwen Sun, Akira Kotani, Koichi Machida, Kazuhiro Yamamoto, Hideki Hakamata

Chemical and Pharmaceutical Bulletin, 70(1) 43-49, Jan 1, 2022 Peer-reviewed
Electrochemical Determination of Titratable Acidity for the Discrimination of Schisandrae Chinensis Fructus and Schisandrae Sphenantherae Fructus

Akira KOTANI, Maki KANEKO, Koichi MACHIDA, Kazuhiro YAMAMOTO, Hideki HAKAMATA

Analytical Sciences, 36(8) 1003-1008, Aug 10, 2020 Peer-reviewed

Misc.

A prototype electrode coated with agarose hydrogel for determining acid compounds

森山友滋, 小谷明, 町田晃一, 山本法央, 袴田秀樹

日本薬学会年会要旨集(Web), 143rd, 2023
UV検出超臨界流体クロマトグラフィーによるアスピリンとサリチル酸の高速分離

黒柳直希, 山本法央, 町田晃一, 小谷明, 袴田秀樹

日本薬学会関東支部大会講演要旨集, 66th (CD-ROM), 2022
余剰酸のボルタンメトリーで検出可能な弱塩基性物質の探査

久保日菜子, 小谷明, 山本法央, 町田晃一, 袴田秀樹

日本薬学会関東支部大会講演要旨集, 66th (CD-ROM), 2022
Development of an HPLC-MS method for monitoring the amounts of fatty acids in human cell culture medium

福嶌由樹, 山本法央, 町田晃一, 小谷明, 袴田秀樹

バイオメディカル分析科学シンポジウム講演要旨集, 34th, 2022
An HPLC-MS method for comprehensive analysis of fatty acids and its application to cellular experiments

福嶌由樹, 山本法央, 町田晃一, 小谷明, 袴田秀樹

日本薬学会年会要旨集(Web), 142nd, 2022
Development of HPLC with electrochemical detection for determining emodin in Polygonum Root

塩澤彩, 小谷明, 小島佑介, 町田晃一, 山本法央, 袴田秀樹

日本薬学会年会要旨集(Web), 142nd, 2022
Development of a voltammetric method for determining amino acidity in Japanese sake

渡辺純平, 小谷明, 町田晃一, 山本法央, 袴田秀樹

日本薬学会年会要旨集(Web), 142nd, 2022
Evaluation of an aged beef sample based on the voltammetric determination of free amino acids contents

下邨魁斗, 小谷明, 町田晃一, 山本法央, 袴田秀樹

日本薬学会年会要旨集(Web), 142nd, 2022
Electrolysis of β-sitosterol in acetonitrile by a flow-through column electrolysis system

藤澤和磨, 町田晃一, 小谷明, 山本法央, 袴田秀樹

日本薬学会年会要旨集(Web), 142nd, 2022
Emerging Separation Techniques in Supercritical Fluid Chromatography

Kazuhiro Yamamoto, Koichi Machida, Akira Kotani, Hideki Hakamata

Chemical and Pharmaceutical Bulletin, 69(10) 970-975, Oct 1, 2021 Peer-reviewedInvited
Fingerprint analysis using HPLC with electrochemical detection for the discrimination of Schisandrae Chinensis Fructus and Schisandrae Sphenantherae Fructus

大崎智哉, 小谷明, 町田晃一, 山本法央, 袴田秀樹

日本薬学会年会要旨集(Web), 141st, 2021
Electrochemical determination of emodin in hydrochloric acidic media using HPLC system

小島佑介, 小谷明, 町田晃一, 山本法央, 袴田秀樹

日本薬学会年会要旨集(Web), 141st, 2021
牛肉中の遊離アミノ酸定量のためのキノンのボルタンメトリーの開発

小谷明, 下邨魁斗, 町田晃一, 山本法央, 袴田秀樹

日本分析化学会年会講演要旨集(Web), 70th, 2021
Triglyceride-lowering effect of vitamins in an in vitro NAFLD/NASH model using HepG2 cells

山本法央, 小池祐貴, 山本千尋, 町田晃一, 小谷明, 袴田秀樹

日本薬学会年会要旨集(CD-ROM), 140th, 2020
Electrochemical detection of emodin in hydrochloric acidic media and its application to hyphenated HPLC

小島佑介, 小谷明, 町田晃一, 山本法央, 袴田秀樹

日本薬学会年会要旨集(CD-ROM), 140th, 2020
ピコリン酸エステル化エルゴステロールの検出のためのLC-MS条件の最適化

町田晃一, 小谷明, 山本法央, 袴田秀樹

日本薬学会年会要旨集(CD-ROM), 139th, 2019
SHRSPラット血中のエルゴステロール-d₁及びブラジカステロール-d₁のLC-MS/MSによる定量

町田晃一, 古石裕治, 小谷明, 山本法央, 三浦剛, 袴田秀樹

バイオメディカル分析科学シンポジウム講演要旨集, 30th, 2017

Profile Information

Research Interests

Research Areas

Research History

Committee Memberships

Papers

Misc.

Professional Memberships

Menu

Coauthors