{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T01:31:03Z","timestamp":1791336663004,"version":"4.3.1"},"reference-count":23,"publisher":"Wiley","issue":"24","license":[{"start":{"date-parts":[[2021,10,8]],"date-time":"2021-10-08T00:00:00Z","timestamp":1633651200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Electrophoresis"],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Elution of strong and weak anion exchangers with sodium chloride gradients is commonly employed for analysis of sample mixtures containing different isomers of plasmid DNA. Gradient elution of a weak anion exchanger (diethylaminoethyl) in the presence of guanidine hydrochloride (Gdn) roughly doubles resolution between open\u2010circular (oc) and supercoiled (sc) isomers. It also improves resolution among sc, linear, and multimeric\/aggregated forms. Sharper elution peaks with less tailing increase sensitivity about 30%. However, elution with an exclusively Gdn gradient to 900\u00a0mM causes more than 10% loss of plasmid. Elution with a sodium chloride gradient while maintaining Gdn at a level concentration of 300\u00a0mM achieves close to 100% recovery of sc plasmid while maintaining the separation improvements achieved by exclusively Gdn elution. Corresponding improvements in separation performance are not observed on a strong (quaternary amine) anion exchanger. Other chaotropic salts do not produce a favorable result on either exchanger, nor does the inclusion of surfactants or EDTA. Selectivity of the diethylaminoethyl\u2010Gdn method is orthogonal to electrophoresis, but with better quantification than agarose electrophoresis, better quantitative accuracy than CE, and resolution approaching CE.<\/jats:p>","DOI":"10.1002\/elps.202100210","type":"journal-article","created":{"date-parts":[[2021,9,27]],"date-time":"2021-09-27T08:42:13Z","timestamp":1632732133000},"page":"2619-2625","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Guanidine improves DEAE anion exchange\u2010based analytical separation of plasmid DNA"],"prefix":"10.1002","volume":"42","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9397-0759","authenticated-orcid":false,"given":"Urh","family":"\u010cernigoj","sequence":"first","affiliation":[{"name":"BIA Separations d.o.o. a\u00a0Sartorius company  Ajdov\u0161\u010dina Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jana","family":"Vidi\u010d","sequence":"additional","affiliation":[{"name":"BIA Separations d.o.o. a\u00a0Sartorius company  Ajdov\u0161\u010dina Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana","family":"Ferjan\u010di\u010d","sequence":"additional","affiliation":[{"name":"BIA Separations d.o.o. a\u00a0Sartorius company  Ajdov\u0161\u010dina Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ur\u0161a","family":"Sinur","sequence":"additional","affiliation":[{"name":"BIA Separations d.o.o. a\u00a0Sartorius company  Ajdov\u0161\u010dina Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Klemen","family":"Bo\u017ei\u010d","sequence":"additional","affiliation":[{"name":"BIA Separations d.o.o. a\u00a0Sartorius company  Ajdov\u0161\u010dina Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nina","family":"Mencin","sequence":"additional","affiliation":[{"name":"BIA Separations d.o.o. a\u00a0Sartorius company  Ajdov\u0161\u010dina Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"An\u017ee","family":"Martin\u010di\u010d Celjar","sequence":"additional","affiliation":[{"name":"BIA Separations d.o.o. a\u00a0Sartorius company  Ajdov\u0161\u010dina Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pete","family":"Gagnon","sequence":"additional","affiliation":[{"name":"BIA Separations d.o.o. a\u00a0Sartorius company  Ajdov\u0161\u010dina Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ale\u0161","family":"\u0160trancar","sequence":"additional","affiliation":[{"name":"BIA Separations d.o.o. a\u00a0Sartorius company  Ajdov\u0161\u010dina Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,10,8]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1006\/abio.1999.4291"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chroma.2013.08.075"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jchromb.2007.04.005"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10616-010-9322-9"},{"key":"e_1_2_9_6_1","volume-title":"Purification of Nucleic Acids: A Handbook for Purification of Plasmid DNA and mRNA for Gene Therapy and Vaccines","author":"Gagnon P.","year":"2020"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpba.2008.11.011"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1186\/s13104-018-3147-6"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tibtech.2008.05.005"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/jssc.201000347"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chroma.2013.01.058"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jchromb.2019.04.024"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chroma.2010.11.002"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1021\/ac3034823"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.vaccine.2009.10.061"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jchromb.2015.12.036"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/jps.20821"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1039\/C9TB01269A"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1021\/ac0709201"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-0716-0872-2_9"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chroma.2009.01.060"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chroma.2006.03.120"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1021\/jf901165h"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.3390\/pharmaceutics13010113"}],"container-title":["ELECTROPHORESIS"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/elps.202100210","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/elps.202100210","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/elps.202100210","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,15]],"date-time":"2025-10-15T08:39:43Z","timestamp":1760517583000},"score":1,"resource":{"primary":{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/10.1002\/elps.202100210"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,10,8]]},"references-count":23,"journal-issue":{"issue":"24","published-print":{"date-parts":[[2021,12]]}},"alternative-id":["10.1002\/elps.202100210"],"URL":"https:\/\/doi.org\/10.1002\/elps.202100210","archive":["Portico"],"relation":{},"ISSN":["0173-0835","1522-2683"],"issn-type":[{"value":"0173-0835","type":"print"},{"value":"1522-2683","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,10,8]]},"assertion":[{"value":"2021-07-06","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-09-17","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-10-08","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}