A Ricin Forensic Profiling Approach Based on a Complex Set of Biomarkers
A forensic method for the retrospective determination of preparation methods used for illicit ricin toxin production was developed. The method was based on a complex set of biomarkers, including carbohydrates, fatty acids, seed storage proteins, in combination with data on ricin and Ricinus communis agglutinin. The analyses were performed on samples prepared from four castor bean plant (R. communis) cultivars by four different sample preparation methods (PM1 – PM4) ranging from simple disintegration of the castor beans to multi-step preparation methods including different protein precipitation methods. Comprehensive analytical data was collected by use of a range of analytical methods and robust orthogonal partial least squares-discriminant analysis- models (OPLS-DA) were constructed based on the calibration set. By the use of a decision tree and two OPLS-DA models, the sample preparation methods of test set samples were determined. The model statistics of the two models were good and a 100% rate of correct predictions of the test set was achieved.
- Authors:
-
[1]
; [2]
; [1]
; [1]
; [2]
; [1]
- Swedish Defence Research Agency, Umea (Sweden)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Publication Date:
- Report Number(s):
- PNNL-SA-130526
Journal ID: ISSN 0039-9140; PII: S0039914018303102
- Grant/Contract Number:
- AC0576RL01830
- Type:
- Accepted Manuscript
- Journal Name:
- Talanta
- Additional Journal Information:
- Journal Name: Talanta; Journal ID: ISSN 0039-9140
- Publisher:
- Elsevier
- Research Org:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Org:
- USDOE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES
- OSTI Identifier:
- 1430520