title: A sequential injection analysis/chemiluminescent plant tissue-based biosensor system for the determination of diamine.
abstract: In this paper, a new chemiluminescent plant tissue-based biosensor for diamine detection was presented by employing sequential injection analysis (SIA), which facilitates precise fluidic handling and lower consumption of sample and reagents. Pea-seedling tissue acted as the molecular recognition element and was packed in a mini-PTFE column and further incorporated in the SIA system. The analysis of diamines, such as putrescine and cadaverine, is based on an enzymatic conversion which takes place in the plant tissue column to produce hydrogen peroxide. The formed hydrogen peroxide was detected by a chemiluminescence reaction involving luminol and Co(2+). Under the optimal conditions, the linear calibration graphs were obtained within 0.2-80 microM (putrescine) and 0.5-100 microM (cadaverine). The detection limits of 0.03 and 0.06 microM were achieved for putrescine and cadaverine, respectively, along with the relative standard deviations of 2.14% and 3.08% (n=11) and a sampling frequency of 40 h(-1). The present biosensor has been used for the analysis of diamine in fish samples with an acceptable accuracy.
authors.affiliation: Department of Chemistry, Liaoning Normal University, Dalian 116029, China. yangmeils@163.com
authors.forename: Yang
authors.initials: Y
authors.lastname: Mei
authors.forename: Liu
authors.initials: L
authors.lastname: Ran
authors.forename: Xu
authors.initials: X
authors.lastname: Ying
authors.forename: Zou
authors.initials: Z
authors.lastname: Yuan
authors.forename: Song
authors.initials: S
authors.lastname: Xin
mesh_terms: D001681:Biological Assay / Q000295:instrumentation / Q000379:methods; D019149:Bioreactors; D015374:Biosensing Techniques / Q000295:instrumentation* / Q000379:methods; D002103:Cadaverine / Q000008:administration & dosage / Q000302:isolation & purification; D002138:Calibration; D003959:Diamines / Q000008:administration & dosage* / Q000032:analysis*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D017022:Flow Injection Analysis / Q000295:instrumentation* / Q000379:methods; D008163:Luminescent Measurements / Q000295:instrumentation* / Q000379:methods; D018532:Pisum sativum / Q000187:drug effects / Q000502:physiology*; D018515:Plant Leaves / Q000187:drug effects / Q000502:physiology*; D011700:Putrescine / Q000008:administration & dosage / Q000302:isolation & purification; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D003959:Diamines; D002103:Cadaverine; D011700:Putrescine