Journal
JOURNAL OF FOOD SCIENCE
Volume 78, Issue 3, Pages C395-C401Publisher
WILEY-BLACKWELL
DOI: 10.1111/1750-3841.12050
Keywords
discriminant analysis; geographical origin; spice; vanilla; wavelength dispersive X-ray fluorescence
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Funding
- Chemistry Dept., Towson Univ.
- NSF [0653011]
- Division Of Undergraduate Education
- Direct For Education and Human Resources [0653011] Funding Source: National Science Foundation
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Sixteen elements found in 37 vanilla samples from Madagascar, Uganda, India, Indonesia (all Vanilla planifolia species), and Papa New Guinea (Vanilla tahitensis species) were measured by wavelength dispersive X-ray fluorescence (WDXRF) spectroscopy for the purpose of determining the elemental concentrations to discriminate among the origins. Pellets were prepared of the samples and elemental concentrations were calculated based on calibration curves created using 4 Natl. Inst. of Standards and Technology (NIST) standards. Discriminant analysis was used to successfully classify the vanilla samples by their species and their geographical region. Our method allows for higher throughput in the rapid screening of vanilla samples in less time than analytical methods currently available.
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