Article(id=1315696658659267196, tenantId=1146029695717560320, journalId=1315121759093096577, issueId=1315696649406624175, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1005-7021.2026.01.002, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1748880000000, receivedDateStr=2025-06-03, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791616127885, onlineDateStr=2026-10-10, pubDate=1771516800000, pubDateStr=2026-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791616127885, onlineIssueDateStr=2026-10-10, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791616127885, creator=13701087609, updateTime=1791616127885, updator=13701087609, issue=Issue{id=1315696649406624175, tenantId=1146029695717560320, journalId=1315121759093096577, year='2026', volume='46', issue='1', pageStart='1', pageEnd='136', issueExtLink='null', onlineDate='null', pubDate='1771516800000', pubDateStr='2026-02-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1791616125680, creator='13701087609', updateTime=1791616242659, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1315697140115026638, tenantId=1146029695717560320, journalId=1315121759093096577, issueId=1315696649406624175, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1315697140115026639, tenantId=1146029695717560320, journalId=1315121759093096577, issueId=1315696649406624175, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=14, endPage=23, ext={EN=ArticleExt(id=1315696658839622269, articleId=1315696658659267196, tenantId=1146029695717560320, journalId=1315121759093096577, language=EN, title=Regulation Effect of Xanthan Gum on Calcium Carbonate Precipitation Induced by Klebsiella aerogenes, columnId=null, journalTitle=Journal of Microbiology, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Biopolymers have significant influences and regulatory effect on microbial mineralization processes and precipitate characteristics. In this study, xanthan gum (XG) served as the biopolymer, and Klebsiella aerogenes was utilized as the carbonate mineralizing bacterium, the regulatory effects and mechanisms of XG concentrations on the precipitation yield, particle size, crystalline polymorph, and morphological characteristics of calcium carbonate precipitation induced by K. aerogenes were explored systematically. The results showed that when the calcium concentrations were 0.25 mol/L and 0.50 mol/L, and the XG concentrations were 0.50 g/L and 0.75 g/L, respectively, the precipitation yield of calcium carbonate was 25.00% and 9.60% greater than that of the control group, respectively. With the amount of XG addition increasing, at low calcium concentrations (0.25 mol/L), the proportion of calcite decreases and the proportion of vaterite increases, and gradually to be stabilizing. At high calcium concentration (0.50 mol/L), the proportion of calcite tends to increase first and then to decrease, whereas the proportion of vaterite tends to decrease and then gradually to stabilize. Compared with those of the control group, the average particle sizes of the calcium carbonate crystals in the two calcium concentrations groups decreased by 44.50% (0.25 mol/L) and 64.40% (0. 50 mol/L). Meanwhile, the addition of XG promoted the formation of spherical or spheroidal-like calcium carbonate morphology. These findings provide a new strategy for the precise and customized regulation of microbial mineralization.

, authors=Jia-wen GAO^{1, 2}, Jia-hua ZHU^{1, 2}, Zhao CUI^{1, 2}, Ting LI^{1, 2}, Guang-yue LI^{1, 2, *}, authorsList=Jia-wen GAO, Jia-hua ZHU, Zhao CUI, Ting LI, Guang-yue LI, authorCompany=null, correspAuthors=Guang-yue LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1315696659129029246, articleId=1315696658659267196, tenantId=1146029695717560320, journalId=1315121759093096577, language=CN, title=黄原胶对克雷伯氏杆菌诱导碳酸钙沉淀的调控, columnId=1315696197449405326, journalTitle=微生物学杂志, columnName=研究报告, runingTitle=null, highlight=null, articleAbstract=

生物聚合物对微生物矿化过程和沉淀特性具有重要的影响及调控作用。本研究以黄原胶为生物聚合物，克雷伯氏杆菌（Klebsiella aerogenes）为碳酸盐矿化菌，系统研究了黄原胶质量浓度对克雷伯氏杆菌诱导碳酸钙沉淀的沉淀量、粒径、晶型和形貌的调控作用。结果表明，黄原胶质量浓度为0.50 g/L（钙源浓度0.25 mol/L）和0.75 g/L（钙源浓度0.50 mol/L）时，碳酸钙沉淀量较对照组分别提高了25.00%和9.60%。随着黄原胶质量浓度增加，低钙源浓度（0.25 mol/L）时，方解石型碳酸钙占比降低，球霰石型碳酸钙占比增高，并逐渐趋于稳定；高钙源浓度（0.50 mol/L）时，方解石占比先升高后降低，球霰石呈相反趋势，并逐渐趋于稳定。在两个钙源浓度条件下，碳酸钙晶体平均粒径分别比对照组减小了44.50%和64.40%。同时，黄原胶促进了球状或类球状碳酸钙晶体的生成。本研究为实现微生物矿化的精准定向调控提供了新思路。

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高佳文　男，硕士研究生。研究方向为微生物固化。E-mail: 1970639555@qq.com

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高佳文　男，硕士研究生。研究方向为微生物固化。E-mail: 1970639555@qq.com

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