海南师范大学学报（自然科学版）2026，Vol.39Issue(1)：81-87,7.DOI:10.12051/j.issn.1674-4942.2026.01.011
沙雷氏菌属菌株GXMZU-S产天然色素特性及应用
Characterization and Application of Natural Pigments Produced by Serratia sp.Strain GXMZU-S
摘要
Abstract
To obtain microbial resources with the potential for producing microbially derived natural pigments,this study conducted the isolation and screening of pigment-producing microorganisms using soil samples from the Dalongshan Forest Nature Reserve in Yulin,Guangxi.A bacterial strain,designated as GXMZU-S,demonstrating a remarkable ability to synthesize natural purple pigments,was successfully isolated.Phylogenetic analysis based on 16S rDNA gene sequences preliminarily identified the strain as Serratia marcescens.The culture conditions for pigment production by this strain were further optimized.Strategies including the adoption of a static cultivation method,and the identification of maltose as the optimal carbon source combined with potassium nitrate as the optimal nitrogen source,were implemented,effectively enhancing the yield of the microbially derived natural pigment.A systematic assessment of its physicochemical stability was subsequently performed.The pigment maintained favorable coloration under both acidic and neutral conditions,exhibited excellent thermal stability,and retained a high color value within the temperature range of 20℃to 70℃.When applied for dyeing cotton textiles,the dyed fabrics achieved both washing fastness and rubbing fastness ratings of 4-5,demonstrating superior practical performance.The results validate the application potential of the GXMZU-S pigment in the field of textile dyeing,enrich the library of microbial resources capable of producing microbially derived natural pigments,and provide practical references for the application of such pigments.关键词
粘质沙雷氏菌/微生物源天然色素/培养条件优化/色素稳定性Key words
Serratia marcescens/microbially derived natural pigments/optimization of culture conditions/pigment stability分类
生物科学引用本文复制引用
覃天涵,覃钰岚,邓培颖,黄思敏,朱英芝..沙雷氏菌属菌株GXMZU-S产天然色素特性及应用[J].海南师范大学学报（自然科学版）,2026,39(1):81-87,7.基金项目
广西大学生创新训练计划项目(S202410608010) （S202410608010）
