Papers - SUZUKI Ryuichiro
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The constituents of Mallotus Bark showing antibacterial activity against Vibrio vulnificus, Reviewed
H. Shirai, M. Taneda, H. Koito, R. Suzuki
Japan. J. Pharmacog. 79 63 - 64 2025
Authorship：Last author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Isolation of compounds including two new compounds from asiasarum root and their anti-glycation activity Reviewed
Aiko Sano, Ryuichiro Suzuki
accepted 2025
Authorship：Last author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Quality control of corn silk extract using IR spectroscopy along with statistical methods Reviewed
A. Sano, Y. Inoue, Y. Higuchi, K. Akao, R. Suzuki
41 311 - 316 2024
Authorship：Last author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Quantitative analyses of sennosides A and B in eight ethical bofutsushosan extract products Reviewed
T. Shii, T. Iguchi, M. Kuroda, T. Shimazaki, R. Suzuki, Y. Mimaki
Traditional & Kampo Medicine 11 13 - 21 2024
Language：English Publishing type：Research paper (scientific journal)
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Screening for essential oils with inhibitory activity against 5α-reductase Reviewed
25 19 - 24 2024
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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Inhibitory effects of senkyuchachosan on SARS-CoV-2 papain-like protease activity in vitro Reviewed
Y. Kiba, T. Tanikawa, T. Hayashi, T. Yokogawa, A. Sano, R. Suzuki, M. Kitamura,
J. Nat. Med 78 784 - 791 2024
Language：English Publishing type：Research paper (scientific journal)
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Discrimination of Sayamakaori and Yabukita which are original plant source of Japanese Green Tea and identification of specific compounds for the former by NMR metabolomics techniques combined with isolation by chromatography methods Reviewed
A. Sano, T. Shibata, A. Takahasi, T. Yokogawa, M. Kitamura, R. Suzuki
Nat. Prod. Commun. 18 1 - 7 2023
Authorship：Last author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Isolation of pro-osteogenic compounds from Euptelea polyandra that reciprocally regulate osteoblast and osteoclast differentiation Reviewed
R. Suzuki , Y. Shirataki, A. Tomomura, K. Bandow, H. Sakagami, M. Tomomura
Int J Mol Sci accepted 2023
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Differentiating Between Three Licorice Species Using SFC-TOF/MS Analysis With Principal Component Analysis Reviewed
H. Saito, S. Miyoshi, T. Murakami, R. Suzuki
Nat. Prod. Commun. 18 1 - 10 2023
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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Inhibition of furin-like enzymatic activities and SARS-CoV-2 infection by osthole and phenolic compounds with aryl side chains Reviewed
Y. Kiba, T. Tanikawa, T. Hayashi, H. Kamauchi, T. Seki, R. Suzuki, M. Kitamura
Biomedicine & Pharmacotherapy 169 115940 2023
Language：Japanese Publishing type：Research paper (scientific journal)
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Effect of Maillard reaction on the quality of clarified butter, ghee Reviewed
Takami Y., Chiaki Y., Mari H., Yuka S., Takashi T., Ryuichiro S., Yutaka I., Masashi K.
J. Nat. Med. 77 230 - 237 2023
Language：English Publishing type：Research paper (scientific journal)
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Anti-Helicobacter pylori activity of Swertianolin, isolated from swertia herb Reviewed
R. Suzuki, R. Yumoto, H. Shirai, T. Tanaka
J. Nat. Med. 77 1005 - 1008 2023
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Characterization of Carbohydrates, Amino Acids, Viscosity, and Antioxidant Capacity in Rice Wines Made in Saitama, Japan, with Different Sake Rice Reviewed
Y. Inoue, S. Ueda, T. Tanikawa, A. Sano, R. Suzuki, H. Todo, Y. Higuchi, K. Akao,
Food 12 4004 2023
Language：English Publishing type：Research paper (scientific journal)
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1H-NMR-based metabolomics for the classification of the roots of Paeonia lactiflora, a constituent of Kampo medicines Invited Reviewed
Y. Ueno, R. Suzuki, M. Kitamura
Chem. Pharm. Bull. 70 859 - 862 2022
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Yutaka Inoue, Lianne Cormanes,Kana Yoshimura, Aiko Sano,Yumiko Hori,Ryuichiro Suzuki, Ikuo Kanamoto
Foods 11 1803 2022
Language：English Publishing type：Research paper (scientific journal)
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Degradative Effect of Nattokinase on Spike Protein of SARS-CoV-2 Reviewed
T. Tanikawa, Y. Kiba, J. Yu, K. Hsu, S. Chen, A. Ishii, T. Yokogawa, R. Suzuki, Y. Inoue, M. Kitamura
Molecules 27 5405 2022
Language：English Publishing type：Research paper (scientific journal)
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Lignin, an active component in the corn silk water extract, inhibits glycation Reviewed
A. Sano, Y. Inoue, R. Suzuki
Scientific Reports 12 17764 2022
Authorship：Last author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Comparison of various commercially available cinnamon barks using NMR metabolomics and the quantification of coumarin by quantitative NMR methods Reviewed
R. Suzuki, Y. Kasuya, A. Sano, J. Tomita, T. Maruyama, M. Kitamura,
J. Nat. Med. 76 87 - 93 2022
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Determination of Sugars and Amino Acids in Japanese Wine using Core-Shell Liquid Chromatography tandem Electrochemical Detection Reviewed
K. Yoshimura, A. Sano, R. Suzuki, S. Mitomo, Y. Negishi, T. Mutai, Jr, Florencio Arce, Gerard Lee See, T. Tanikawa, Y. Inoue.
Thai J. Pharm. Sci. in press 2022
Language：English Publishing type：Research paper (scientific journal)
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Inhibitory effect of honokiol on furin-like activity and SARS-CoV-2infection Reviewed
T. Tanikawa, T. Hayashi, R. Suzuki, M. Kitamura, Y. Inoue
J. Tradit. Complement Med 12 69 - 72 2022
Language：English Publishing type：Research paper (scientific journal)
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Fruit body formation and intra-species DNA polymorphism in Japanese Wolfiporia cocos strains Reviewed
M. Kitamura, N. Muramatsu, T. Yokogawa, Y. Kiba, R. Suzuki,
J. Nat. Med. 76 675 - 679 2022
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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Rapid identification of Colchicum autumnale based on loop-mediated isothermal amplification (LAMP) assay Reviewed
S. Misawa, D. Natsuhara, Y. Kiba, T. Yamamuro, R. Suzuki, T. Shibata, M. Kitamura,
Forensic Toxicol. 39 259 - 265 2021
Language：English Publishing type：Research paper (scientific journal)
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Screening for inhibitory effects of crude drugs on furin-like enzymatic activities Reviewed
Y. Kiba, R. Oyama, S. Misawa, T. Tanikawa, M. Kitamura, R. Suzuki
J. Nat. Med. 75 1080 - 1085 2021
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Use of 13C-NMR chemical shifts; Application of principal component analysis for categorizing structurally similar methoxyflavones and correlation analysis between chemical shifts and cytotoxicity. Reviewed
R. Suzuki, Y. Uesawa, Y. Okada, T. Horikawa, Y. Okabe, M. Aburada, K. Takahashi, K. Kinoshita.
Chem. Pharm. Bull. 69 199 - 202 2021
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Cannabidiol Content and In Vitro Biological Activities of Commercial Cannabidiol Oils and Hemp Seed Oils Reviewed
M. Kitamura, Y. Kiba, R. Suzuki, N. Tomida, A. Uwaya, F. Isami, S. Deng
Medicines 7 57 2020
Language：English
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Improving quality control of yucca extracts used as food additives by screening antimicrobial activity using NMR metabolomics. Reviewed
R. Suzuki, H. Ohno, T. Murakami, and Y. Shirataki
J. Nat. Med. 74, 306 - 310 2020
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Physical Properties of an Ionic Liquid Composed of Two Water-Soluble Vitamins and Enhanced Skin Permeation of Both Vitamins Reviewed
K. Sugibayashi, Y. Yoshida, R. Suzuki, K. Yoshizawa, K. Mori, S. Itakura, K. Takayama, H. Todo
Pharmaceutics 12 427 2020
Language：English
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Nor-kurarinone characteristic of Chinese Sophora flavescens Reviewed International journal
Ryuichiro Suzuki, Utsumi Takahiro, Risa Takao and Yoshiaki Shirataki
Nat. Prod. Commun. 14 107 - 109 2019
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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A New γ-Butenolide Glycoside from the Root of Styphnolobium japonicum Reviewed
T. Utsumi, R. Suzuki, H. Kamauchi, S. Misawa, M. Kitamura, Y. Sugita, and Y. Shirataki, A
Heterocycles 98 1251 - 1257 2019
Authorship：Second author Language：English Publishing type：Research paper (scientific journal)
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Authentication of shan-dou-gen based on DNA analysis Reviewed International journal
M. Kitamura, N. Muramatsu, R. Suzuki, Y. Shirataki
Nat. Prod. Commun. 14 1 - 5 2019
Language：English Publishing type：Research paper (scientific journal)
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Rapid identification of Aconitum plants based on loop-mediated isothermal amplification assay Reviewed International journal
M. Kitamura, A. Kazato, T. Yamamuro, H. Ando, Y. Sasaki, R. Suzuki, Y. Shirataki
BMC Research Notes 12 1 - 5 2019
Language：English Publishing type：Research paper (scientific journal)
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Screening for natural medicines effective for the treatment of osteoporosis Reviewed International journal
R Suzuki, S Fukami, M Tomomura, A Tomomura, Y Shirataki
J. Nat. Med. 73 331 - 337 2019
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Change in Amino Acid Pools During Neuronal Differentiation of PC12 Cells Reviewed International journal
A. Sano, H. Shi, R. Suzuki, Y. Shirataki, H. Sakagami
in vivo 32 1403 - 1408 2018
Language：English Publishing type：Research paper (scientific journal)
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Distinguishing Glycyrrhiza species using NMR-based metabolomics Reviewed International journal
R. Suzuki, F. Nakano, H. Ohno, T. Murakami, Y. Okada and Y. Shirataki
Nat. Prod. Commun. 13 71 - 73 2018
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Metabolites of Endophytic Actinomycetes Isolated from Sophora flavescens Reviewed International journal
R. Takao, R. Suzuki, M. Ueki, Y. Sugiura, Y. Shirataki
Japan. J. Pharmacog. 72 90 - 91 2018
Authorship：Second author Language：English Publishing type：Research paper (scientific journal)
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Effects of Oolong Tea on Postprandial Triglyceride Levels Reviewed International journal
R. Suzuki, T. Kawasaki, Y. Honda, S. Fujita, Y. Shirataki
Jpn. Pharmacol. Ther. 46 1339 - 1346 2018
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Establishment of a direct-injection electron ionization–mass spectrometry metabolomics method and its application to lichen profiling Reviewed
H. Kai, K. Kinoshita, H. Harada, Y. Uesawa, A. Maeda, R. Suzuki, Y. Okada, K. Takahashi, K. Matsuno
Anal. Chem 89 6408 - 6414 2017
Language：English Publishing type：Research paper (scientific journal)
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Re-evaluation of Culture Condition of PC12 and SH-SY5YCells Based on Growth Rate and Amino Acid Consumption Reviewed International journal
H. Sakagami, R. Suzuki, Y. Shirataki, S. Iwama, M. Nakagawa, H. Suzuki, K.Tanaka, N. Tamura and H. Takeshima
in vivo 31 1089 - 1095 2017
Authorship：Second author Language：English Publishing type：Research paper (scientific journal)
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p-Coumaroyl malate derivatives of the Pandanus amaryllifolius leaf and their isomerization Reviewed International journal
R. Suzuki, S. Kan, Y. Sugita and Y. Shirataki
Chem. Pharm. Bull. 65 1191 - 1194 2017
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Evaluation of Biological Activity of Mastic Extracts Based on Chemotherapeutic Indices Reviewed
R. Suzuki, H. Sakagami, S. Amano, K. Fukuchi, K. Sunaga, T. Kanamoto, S. Terakubo, H. Nakashima, Y. Shirataki, M. Tomomura, Y. Masuda, S. Yokose, A. Tomomura, H. Watanabe, M. Okawara and Y. Matahira
in vivo 31 591 - 598 2017
Language：English Publishing type：Research paper (scientific journal)
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Combined long-term caffeine intake and exercise inhibits the development of diabetic nephropathy in OLETF rats Reviewed
M. Suzuki, D. Shindo, R. Suzuki, Y. Shirataki, and H. Waki
J. Appl. Physiol. 122 1321 - 1328 2017
Language：English Publishing type：Research paper (scientific journal)
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Electron ionization mass spectrometry based metabolomics studies of Sophora flavescens can identify the geographical origin of root samples. Reviewed
R. Suzuki, H. Kai, Y. Uesawa, K. Matsuno, Y. Okada, Y. Shiratakia
Nat. Prod. Commun. 11 73 - 75 2016.01
Language：English Publishing type：Research paper (scientific journal)
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Cytotoxic Components Against Human Oral Squamous Cell Carcinoma Isolated from Andrographis paniculata Reviewed
R. Suzuki, Y. Matsushima, N. Okudaira, H. Sakagami and Y. Shirataki
Anticancer Res 36 5931 - 5936 2016
Language：English Publishing type：Research paper (scientific journal)
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Constituents of root of Odontioda Marie Noel ‘Velano’ Reviewed
S. Matsuno, R. Suzuki and Y. Shirataki
Shoyakugaku Zasshi 70 79 - 80 2016
Language：English Publishing type：Research paper (scientific journal)
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Rhinacanthin C Inhibits Osteoclast Differentiation and Bone Resorption: Roles of TRAF6/TAK1/MAPKs/NF-κB/NFATc1 Signaling. Reviewed
M. Tomomura, R. Suzuki, Y. Shirataki, H. Sakagami, N. Tamura, A. Tomomura
PLoS One 10 e0130174 2015.06
Language：English Publishing type：Research paper (scientific journal)
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New Anti-Oxidative Compounds from Rhinacanthus nasutus. Reviewed
R. Suzuki, H. Sakagami, Y. Shirataki
Heterocycles 91 1036 - 1041 2015.05
Language：English Publishing type：Research paper (scientific journal)
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Constituents of the Leaves of Odontioda Marie Noel ‘Velano’ with Inhibitory Activity on RANKL-induced Osteoclast Differentiation Reviewed
M. Watanabe, R. Suzuki, M. Tomomura, H. Sakagami, A. TomomuraY. Shirataki
Shoyakugaku Zasshi 69 20 - 21 2015.01
Language：English Publishing type：Research paper (scientific journal)
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Identification of the country of growth of Sophora flavescens using Direct Analysis in Real Time Mass Spectrometry (DART-MS) Reviewed
E. Fukuda, Y. Uesawa, M. Baba, R. Suzuki, Y. Shirataki, T. Fukuda, Y. Okada
Nat. Prod. Commun. 9 1591 - 1594 2014.11
Language：English Publishing type：Research paper (scientific journal)
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Search of New Cytotoxic Crude Materials against Human Oral Squamous Cell Carcinoma using 1H NMR-based Metabolomics Reviewed
R. Suzuki, S. Matsuno, H. Sakagami, Y. Okada, Y. Shirataki
Anticancer Res. 34 4117 - 4120 2014.08
Language：English Publishing type：Research paper (scientific journal)
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Studies on the Constituents of the Leaves of Odontioda Marie Noel ‘Velano’ Reviewed
R. Suzuki, S. Tomoeda, M. Todoroki, M. Horiguchi, Y. Shirataki
Shoyakugaku Zasshi 68 23 - 24 2014.06
Language：English Publishing type：Research paper (scientific journal)
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New Biological Activities of Rhinacanthins from the Root of Rhinacanthus nasutus. Reviewed
H. Horii, R. Suzuki, H. Sakagami, M. Tomomura, A. Tomomura, Y. Shirataki.
Anticancer Res. 33 453 - 459 2013.02
Language：English Publishing type：Research paper (scientific journal)
Other Link： http://libir.josai.ac.jp/il/meta_pub/G0000284repository_JOS-02507005-33-453
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Identification of a Xanthine Oxidase-inhibitory Component from Sophora flavescens using NMR-based Metabolomics Reviewed International journal
R. Suzuki, Y. Hasuike, M. Hirabayashi, T. Fukuda, Y. Okada, Y. Shirataki
Nat. Prod. Commun 8 1409 - 1412 2013
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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In search of new biological activities of isolates from Odontoglossum Harvengte ‘Tutu’ Reviewed
R. Suzuki, T. Tanaka, M. Yamamoto, H. Sakagami, M. Tomomura, A. Tomomura, K. Satoh, Y. Shirataki
in vivo 26 993 - 999 2012.11
Language：English Publishing type：Research paper (scientific journal)
Other Link： http://libir.josai.ac.jp/il/meta_pub/G0000284repository_JOS-0258851X-26-993
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Classification using NMR-based metabolomics of Sophora flvescense growing in Japan and China Reviewed
R. Suzuki, I. Yuriko, A. Yamamoto, T. Saima, T. Fujita, T. Fukuda, E. Fukuda, M. Baba, Y. Okada, Y. Shirataki.
Nat. Prod. Commun 7 1453 - 1455 2012.11
Language：English Publishing type：Research paper (scientific journal)
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Novel cytotoxic phenanthrenequinone from odontioda marie noel 'velano' Reviewed
Y. Masuda, R. Suzuki, H. Sakagami, N. Umemura, Y. Shirataki.
Chem. Pharm. Bull 60 1216 - 1219 2012.09
Language：English Publishing type：Research paper (scientific journal)
Other Link： http://libir.josai.ac.jp/il/meta_pub/G0000284repository_JOS-cpb.c12-00399
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Induction of Non-apoptotic Cell Death by Odontioda Marie Noel ‘Velano’ Extracts in Human Oral Squamous Cell Carcinoma Cell Lines Reviewed
Y. Masuda, R. Suzuki, H. Sakagami, N. Umehara, J. Ueda, Y. Shirataki
in vivo 26 265 - 270 2012.03
Language：English Publishing type：Research paper (scientific journal)
Other Link： http://libir.josai.ac.jp/il/meta_pub/G0000284repository_JOS-0258851X-26-265
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Induction of Non-apoptotic Cell Death in Human Oral Squamous Cell Carcinoma Reviewed
H. Horii, R. Suzuki, H. Sakagami, N. Umehara, J. Ueda, Y. Shirataki
in vivo 26 305 - 310 2012.03
Language：English Publishing type：Research paper (scientific journal)
Other Link： http://libir.josai.ac.jp/il/meta_pub/G0000284repository_JOS-0258851X-26-305
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Reveromycin A biosynthesis uses RevG and RevJ for stereospecific spiroacetal formation Reviewed International journal
S. Takahashi, A. Toyoda, Y. Sekiyama, H. Takagi, T. Nogawa, M. Uramoto, R. Suzuki, H. Koshino, T. Kumano, S. Panthee, T. Dairi, J. Ishikawa, H. Ikeda, Y. Sakaki, H. Osada
7 461 - 468 2011
Language：English Publishing type：Research paper (scientific journal)
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Application to classification of mulberry leaves using multivariate analysis of proton NMR metabolomic data. Reviewed International journal
E. Fukuda, M. Yoshida, M. Baba, Y. Uesawa, R. Suzuki, O. Kamo, K. Tsubono, K. Arifuku, K.Yatsunami, Y. Okada
Nat. Prod. Commun. 6 1621 - 1625 2011
Language：English Publishing type：Research paper (scientific journal)
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Nocardamin production by Streptomyces avermitilis. Reviewed
M. Ueki, R. Suzuki, S. Takamatsu, H. Takagi, M. Uramoto, H. Ikeda, H. Osada
Actinomycetologica 23 34 - 39 2009
Authorship：Second author Language：English Publishing type：Research paper (scientific journal)
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Chemical Constituents of the Style of Zea mays L. with Glycation Inhibitory Activity Reviewed
R. Suzuki, M. IIJIMA, Y. OKADA, T. OKUYAMA
Chem. Pharm. Bull. 55 153 - 155 2007
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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RIKEN Natural Products Encyclopedia (RIKEN NPEdia), a Chemical Database of RIKEN Natural Products Depository (RIKEN NPDepo) Reviewed
T. Tomiki, T. Saito, M. Ueki, H. Konno,T. Asaoka, R. Suzuki, M. Uramoto, H. Kakeya, H. Osada
J. Comp. Aid. Chem. 7 157 - 162 2006
Language：English
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The Favorable Effect of Style of Zea mays L. on Streptozotocin Induced Diabetic Nephropathy Reviewed
R. Suzuki, Y. Okada, T. Okuyama
Biol. Pharm. Bull 28 919 - 920 2005
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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A New Phloroglucinol Derivative from the Brown Alga Eisenia bicyclis: Potential for the Effective Treatment of Diabetic Complications Reviewed
Y. Okada, A. Ishimaru, R. Suzuki, T. Okuyama
J. Nat. Prod. 67 103 - 105 2004
Language：English Publishing type：Research paper (scientific journal)
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Two flavone C-glycosides from the style of Zea mays with glycation inhibitory activity Reviewed
R. Suzuki, Y. Okada, T. Okuyama
J. Nat. Prod. 66 564 - 565 2003
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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A New Flavone C-Glycoside from the Style of Zea mays L. with Glycation Inhibitory Activity Reviewed
R. Suzuki, Y. Okada, T. Okuyama
Chem. Pharm. Bull 51 1186 - 1188 2003
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)