Koichi Machida

2.0k total citations
101 papers, 1.7k citations indexed

About

Koichi Machida is a scholar working on Molecular Biology, Plant Science and Pharmacology. According to data from OpenAlex, Koichi Machida has authored 101 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 72 papers in Molecular Biology, 64 papers in Plant Science and 11 papers in Pharmacology. Recurrent topics in Koichi Machida's work include Phytochemistry and Biological Activities (61 papers), Natural product bioactivities and synthesis (59 papers) and Phytochemistry and Bioactive Compounds (11 papers). Koichi Machida is often cited by papers focused on Phytochemistry and Biological Activities (61 papers), Natural product bioactivities and synthesis (59 papers) and Phytochemistry and Bioactive Compounds (11 papers). Koichi Machida collaborates with scholars based in Japan, China and Canada. Koichi Machida's co-authors include Masao Kikuchi, Yasunori Yaoita, Rie Kakuda, Shun‐ichi Ohnishi, Takayuki Kasahara, Tadanao Ito, Hiromi Sasaki, Hiroko Kobayashi, Masafumi Kikuchi and A. Kotani and has published in prestigious journals such as SHILAP Revista de lepidopterología, Coordination Chemistry Reviews and Biochimica et Biophysica Acta (BBA) - Biomembranes.

In The Last Decade

Koichi Machida

100 papers receiving 1.7k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Koichi Machida Japan	27	1.2k	891	262	259	226	101	1.7k
Yasunori Yaoita Japan	25	1.1k 0.9×	771 0.9×	148 0.6×	502 1.9×	200 0.9×	102	1.7k
Guangzhong Yang China	21	867 0.7×	689 0.8×	155 0.6×	261 1.0×	155 0.7×	125	1.6k
Bao‐Ning Su United States	21	952 0.8×	801 0.9×	135 0.5×	248 1.0×	151 0.7×	46	1.8k
Ju Sun Kim South Korea	22	905 0.8×	478 0.5×	177 0.7×	241 0.9×	117 0.5×	45	1.5k
Trần Mạnh Hưng South Korea	24	990 0.8×	537 0.6×	232 0.9×	449 1.7×	158 0.7×	52	1.8k
Albert J. Chulia France	22	956 0.8×	599 0.7×	226 0.9×	111 0.4×	160 0.7×	67	1.5k
Sonja Sturm Austria	27	849 0.7×	467 0.5×	154 0.6×	273 1.1×	236 1.0×	79	1.8k
Fumihiko Yoshizaki Japan	24	672 0.6×	514 0.6×	214 0.8×	198 0.8×	222 1.0×	74	1.5k
Jinlan Ruan China	22	749 0.6×	463 0.5×	172 0.7×	179 0.7×	171 0.8×	100	1.9k
Yoshiteru Ida Japan	29	1.8k 1.5×	751 0.8×	221 0.8×	217 0.8×	205 0.9×	114	2.5k

Countries citing papers authored by Koichi Machida

Since Specialization

Citations

This map shows the geographic impact of Koichi Machida's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Koichi Machida with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koichi Machida more than expected).

Fields of papers citing papers by Koichi Machida

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Koichi Machida. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Koichi Machida. The network helps show where Koichi Machida may publish in the future.

Co-authorship network of co-authors of Koichi Machida

This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Machida. A scholar is included among the top collaborators of Koichi Machida based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Koichi Machida. Koichi Machida is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Machida, Koichi, A. Kotani, Tokio Osaki, et al.. (2024). Electrochemical Fingerprint Analyses Using Voltammetry and Liquid Chromatography Coupled with Multivariate Analyses for the Discrimination of Schisandra Fruits. Molecules. 30(1). 48–48. 1 indexed citations

Yaoita, Yasunori, et al.. (2011). Sterols from the Mushroom Russula sanguinea. 65(2). 143–144. 1 indexed citations

Machida, Koichi, et al.. (2010). ULTRA-MULTIPLEXED BEADS SYSTEM WITH IN SITU DNA PROBE SYNTHESIS. 2. 1313–1315. 1 indexed citations

Kikuchi, Masao, et al.. (2010). Two new glycosides from Viburnum plicatum Thunb. ex Murray var. plicatum f. plicatum. Journal of Natural Medicines. 65(1). 202–205. 8 indexed citations

Machida, Koichi, et al.. (2009). A new phenolic glycoside syringate from the bark of Juglans mandshurica MAXIM. var. sieboldiana MAKINO. Journal of Natural Medicines. 63(2). 220–222. 29 indexed citations

Machida, Koichi, et al.. (2009). Two new neolignan glycosides from leaves of Osmanthus heterophyllus. Journal of Natural Medicines. 63(2). 227–231. 21 indexed citations

Machida, Koichi, et al.. (2008). Lignan glycosides from the leaves of Osmanthus heterophyllus. Journal of Natural Medicines. 62(3). 362–363. 14 indexed citations

Machida, Koichi, et al.. (2008). Structure elucidation and NMR spectral assignments of four neolignan glycosides with enantiometric aglycones from Osmanthus ilicifolius. Magnetic Resonance in Chemistry. 46(10). 990–994. 14 indexed citations

Machida, Koichi, et al.. (2008). Chemical constituents of Hypericum erectum Thunb.. Journal of Natural Medicines. 62(4). 467–469. 9 indexed citations

10.

Yaoita, Yasunori, et al.. (2002). Sterol Constituents from Daedaleopsis tricolor. Natural medicines = 生薬學雜誌. 56(3). 117–119. 2 indexed citations

11.

Machida, Koichi, Keiko Shioda, Yasunori Yaoita, Rie Kakuda, & Masao Kikuchi. (2001). Constituents of the Leaves of Catalpa ovata G. DON. Natural medicines = 生薬學雜誌. 55(3). 147–148. 1 indexed citations

12.

Machida, Koichi, et al.. (2001). Studies on the Constituents of Catalpa Species. V. Iridoids from Catalpae Fructus. Natural medicines = 生薬學雜誌. 55(2). 61–63. 4 indexed citations

13.

Machida, Koichi, et al.. (2001). Phenolic Compounds of the Leaves of Catalpa ovata G. DON. 55(2). 64–67. 6 indexed citations

14.

Kakuda, Rie, et al.. (2000). A New Glycoside from the flower buds of Lonicera japonica. 54(6). 314–317. 2 indexed citations

15.

Yaoita, Yasunori, et al.. (2000). Sterol Constituents from Omphalia lapidescens. Natural medicines = 生薬學雜誌. 54(2). 105. 2 indexed citations

16.

Machida, Koichi, et al.. (2000). Studies of the Constituents of Gardenia Species. II. Terpenoids from Gardeniae Fructus.. Chemical and Pharmaceutical Bulletin. 48(5). 746–748. 44 indexed citations

17.

Yaoita, Yasunori, et al.. (2000). Structures of New Ceramides from the Fruit Bodies of Gnfola frondosa.. Chemical and Pharmaceutical Bulletin. 48(9). 1356–1358. 34 indexed citations

18.

Hayashi, Masami & Koichi Machida. (1996). A Revision of the Japanese Species of the Penthimiinae (Homoptera, Cicadellidae).. 2(1). 55–73. 2 indexed citations

19.

Machida, Koichi, et al.. (1988). Structure of flavonoid constituents in Iyo (Citrus iyo) peelings.. Nippon Nōgeikagaku Kaishi. 62(12). 1777–1779. 3 indexed citations

20.

Yoshida, Yoichi, et al.. (1983). . Folia Pharmacologica Japonica. 81(1). 39–58. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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