title: Quantification of 5'-deoxy-5'-methylthioadenosine in heat-treated natural rubber latex serum.
abstract: BACKGROUND
  5'-Deoxy-5'-methylthioadenosine (MTA) is one of the biologically active components found in natural rubber latex (NRL) serum, a common waste product from rubber plantations. In this study the contents of MTA in heat-treated NRL serum were measured in order to assess the potential of the serum as an alternative source of MTA.
  
  
  OBJECTIVE
  To devise an HPLC/UV-based quantitative analytical protocol for the determination of MTA, and to determine the effect of heat treatment on the content of MTA in NRL serum from various sources.
  
  
  METHODS
  An HPLC/UV-based determination of MTA using an acidic eluant was devised and validated. In the heat treatment, the effect of refluxing times on MTA liberation was evaluated.
  
  
  RESULTS
  The quantification protocol was validated with satisfying linearity, limits of detection and quantitation, precisions for peak areas and recovery percentages from intra- and inter-day operations. The amounts of MTA in the NRL sera from various sources increased with heat treatment to yield 5-12 μg MTA/mL of serum.
  
  
  CONCLUSIONS
  The devised protocol was found to be satisfyingly applicable to the routine determination of MTA in NRL serum. The effect of heat treatment on the content of MTA also indicated another possible use for NRL serum, normally discarded in vast amounts by the rubber industry, as an alternative source of MTA.
authors.affiliation: Department of Biochemistry, Faculty of Science, Prince of Songkla University, Songkhla, Thailand.
authors.forename: Thanawat
authors.initials: T
authors.lastname: Pitakpornpreecha
authors.forename: Anuchit
authors.initials: A
authors.lastname: Plubrukarn
authors.forename: Rapepun
authors.initials: R
authors.lastname: Wititsuwannakul
mesh_terms: D000962:Antimalarials / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D002851:Chromatography, High Pressure Liquid; D003839:Deoxyadenosines / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D028482:Hevea / Q000737:chemistry*; D006358:Hot Temperature; D007220:Industrial Waste; D007840:Latex / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D013785:Thailand; D013872:Thionucleosides / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D000962:Antimalarials; D003839:Deoxyadenosines; D007220:Industrial Waste; D007840:Latex; D013872:Thionucleosides; C008500:5'-methylthioadenosine