Pub Date : 2023-02-13DOI: 10.15583/jpchrom.2022.021
Kohei Kawabata, H. Nishi
{"title":"Evaluation of Photostability of Medicines and Development of the Photostabilization of the Photosensitive Medicines","authors":"Kohei Kawabata, H. Nishi","doi":"10.15583/jpchrom.2022.021","DOIUrl":"https://doi.org/10.15583/jpchrom.2022.021","url":null,"abstract":"","PeriodicalId":91226,"journal":{"name":"Chromatography (Basel)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45312705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-09DOI: 10.15583/jpchrom.2022.022
S. Kitagawa
{"title":"Development of Novel Analytical Methods Based on Liquid Chromatography and Electrophoresis","authors":"S. Kitagawa","doi":"10.15583/jpchrom.2022.022","DOIUrl":"https://doi.org/10.15583/jpchrom.2022.022","url":null,"abstract":"","PeriodicalId":91226,"journal":{"name":"Chromatography (Basel)","volume":"31 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41245362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.15583/jpchrom.2022.019
Keiko Hayashi, H. Kumagai, H. Sawada
{"title":"Liquid Chromatography Electrospray Ionization Mass Spectrometry Analysis of Camphor and Menthol","authors":"Keiko Hayashi, H. Kumagai, H. Sawada","doi":"10.15583/jpchrom.2022.019","DOIUrl":"https://doi.org/10.15583/jpchrom.2022.019","url":null,"abstract":"","PeriodicalId":91226,"journal":{"name":"Chromatography (Basel)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41760821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-05DOI: 10.15583/jpchrom.2022.015
Yanawut Manmana, T. Kubo, K. Otsuka
{"title":"Protein Determination by Distance and Color Changing via PEG-Based Hydrogels","authors":"Yanawut Manmana, T. Kubo, K. Otsuka","doi":"10.15583/jpchrom.2022.015","DOIUrl":"https://doi.org/10.15583/jpchrom.2022.015","url":null,"abstract":"","PeriodicalId":91226,"journal":{"name":"Chromatography (Basel)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45535046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-19DOI: 10.15583/jpchrom.2022.018
Yuko Yui, H. Kuroki, Shigenori Ota, C. Aoyama, Yuma Ishida, M. Tsunoda
{"title":"Purification of Peptides and Proteins Using Monolithic Silica Disk-Packed Spin Columns","authors":"Yuko Yui, H. Kuroki, Shigenori Ota, C. Aoyama, Yuma Ishida, M. Tsunoda","doi":"10.15583/jpchrom.2022.018","DOIUrl":"https://doi.org/10.15583/jpchrom.2022.018","url":null,"abstract":"","PeriodicalId":91226,"journal":{"name":"Chromatography (Basel)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43115322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-13DOI: 10.15583/jpchrom.2022.016
Kosuke Ogata, Y. Ishihama
{"title":"Temperature Dependence of Retention Behavior of Phosphorylated Peptides in Ion-Pair Reversed-Phase Liquid Chromatography","authors":"Kosuke Ogata, Y. Ishihama","doi":"10.15583/jpchrom.2022.016","DOIUrl":"https://doi.org/10.15583/jpchrom.2022.016","url":null,"abstract":"","PeriodicalId":91226,"journal":{"name":"Chromatography (Basel)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43724766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-13DOI: 10.15583/jpchrom.2022.017
Nao Kobayashi, Moe Aoki, Dai Tada, Urara Ota, Eiji Sugiyama, H. Mizuno, M. Ishizuka, K. Todoroki
{"title":"Hydrophilic Interaction Liquid Chromatography–Tandem Mass Spectrometry of 5-Aminolevulinic Acid for Low Concentration and Small Sample Volumes","authors":"Nao Kobayashi, Moe Aoki, Dai Tada, Urara Ota, Eiji Sugiyama, H. Mizuno, M. Ishizuka, K. Todoroki","doi":"10.15583/jpchrom.2022.017","DOIUrl":"https://doi.org/10.15583/jpchrom.2022.017","url":null,"abstract":"","PeriodicalId":91226,"journal":{"name":"Chromatography (Basel)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45628856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-07DOI: 10.15583/jpchrom.2022.014
I. Ueta, Taiga Komatsu, Koki Nakagami, Yoshihiro Saito
{"title":"Super Absorbent Polymer for Water Removing Process Followed by a Needle-Type Extraction to the Effective Collection of Methanol in Water Samples","authors":"I. Ueta, Taiga Komatsu, Koki Nakagami, Yoshihiro Saito","doi":"10.15583/jpchrom.2022.014","DOIUrl":"https://doi.org/10.15583/jpchrom.2022.014","url":null,"abstract":"","PeriodicalId":91226,"journal":{"name":"Chromatography (Basel)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67104193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-06DOI: 10.15583/jpchrom.2022.013
C. Mizutani, S. Kitagawa, Yoshinori Iiguni, H. Ohtani
Nonaqueous capillary zone electrophoresis (NACZE) utilizing cationic reagents as an electrophoresis promoter has the potential for separating water-insoluble synthetic polymers and that with tetrahydrofuran based electrophoretic media containing cationic reagents has been reported. In this study, NACZE using hexafluoroisopropanol (HFIP)-based media was developed for separating polyesters and polyamides, which were insoluble in tetrahydrofuran. Nonaqueous media of HFIP containing 400 mM cetyltrimethylammonium chloride (CTAC) and 50 mM trihexyl(tetradecyl)phosphonium chloride (P66614Cl) were used, and it was found that hydrophobic P66614 cation enhanced the electrophoresis of both polyesters and polyamides compared with cetyltrimethylammonium cation. The media containing CTAC resulted in partially separated poly(ethylene terephthalate)/poly(hexamethylene terephthalate) and poly(ethylene terephthalate)/poly(ethylene naphthalate), but P66614Cl failed to separate them. By contrast, nylon 6I and nylon 6/6I were separated with the P66614Cl media, whereas they were co-eluted in the media with CTAC.
{"title":"Nonaqueous Capillary Zone Electrophoresis for Polyesters and Polyamides Using Hexafluoroisopropanol as Electrophoretic Medium","authors":"C. Mizutani, S. Kitagawa, Yoshinori Iiguni, H. Ohtani","doi":"10.15583/jpchrom.2022.013","DOIUrl":"https://doi.org/10.15583/jpchrom.2022.013","url":null,"abstract":"Nonaqueous capillary zone electrophoresis (NACZE) utilizing cationic reagents as an electrophoresis promoter has the potential for separating water-insoluble synthetic polymers and that with tetrahydrofuran based electrophoretic media containing cationic reagents has been reported. In this study, NACZE using hexafluoroisopropanol (HFIP)-based media was developed for separating polyesters and polyamides, which were insoluble in tetrahydrofuran. Nonaqueous media of HFIP containing 400 mM cetyltrimethylammonium chloride (CTAC) and 50 mM trihexyl(tetradecyl)phosphonium chloride (P66614Cl) were used, and it was found that hydrophobic P66614 cation enhanced the electrophoresis of both polyesters and polyamides compared with cetyltrimethylammonium cation. The media containing CTAC resulted in partially separated poly(ethylene terephthalate)/poly(hexamethylene terephthalate) and poly(ethylene terephthalate)/poly(ethylene naphthalate), but P66614Cl failed to separate them. By contrast, nylon 6I and nylon 6/6I were separated with the P66614Cl media, whereas they were co-eluted in the media with CTAC.","PeriodicalId":91226,"journal":{"name":"Chromatography (Basel)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41528648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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