Use of stable isotopes of carbon to detect coconut water adulteration
Open accessAbstract
Industrialized coconut water may have been adulterated by adding sugar above the limit permitted by law. According to Brazilian law, industrialized coconut water can receive the maximum addition of 1 g of sugar per 100 mL of the drink. This work aimed to detect adulteration in industrialized coconut water produced in Brazil and measure the relative isotopic enrichment in fresh coconut water, using the techniques of stable isotopes of carbon. Fresh coconut water samples from 13 locations, industrialized coconut water samples of 17 different brands and cane sugar were analyzed by Isotope Ratio Mass Spectrometer coupled to an elemental analyzer. The relative isotopic enrichment found for fresh coconut water samples ranged from −26.40 to −23.76. From 17 brands of coconut water analyzed, 11 were adulterated by excess sugar and two were already adulterated by presenting soluble solids content higher above the threshold permitted by law. In 65 % of Brazilian industrialized coconut water, the amount of exogenous sugar is higher than the limit permitted by law. Most Brazilian companies do not respect the legal limit of adding cane sugar established by law.
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In Imaizumi et al.'s analysis, coconut water samples exhibited carbon isotope ratios between -26.40 and -23.76%.
“The coconut water exhibited carbon isotope ratios between -26.40 and -23.76%.”
From Authenticity and the Potability of Coconut Water - a Critical Review (2020) · cites this paper as Imaizumi et al. (53)
In Imaizumi et al.'s analysis of 17 Brazilian coconut water brands, 11 (65%) appeared to contain exogenous sugars.
“Of the 17 brands examined, 11 (65%) appeared to contain exogenous sugars (53).”
From Authenticity and the Potability of Coconut Water - a Critical Review (2020) · cites this paper as [53]
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Authenticity and the Potability of Coconut Water - a Critical Review
Burns, D. T., Johnston, E. L., & Walker, M. J. (2020) · Journal of AOAC International · doi:10.1093/jaocint/qsz008 · Cited by 59 · see citing works
- Authors
- Imaizumi, V. M., Sartori, M. M. P., Ducatti, C., & Venturini Filho, W. G.
- Affiliations
- Universidade Estadual Paulista (Unesp) (BR)
- Universidade Estadual Paulista, Brasil
- ORCID
- Venue
- Scientia Agricola
- Publisher
- FapUNIFESP (SciELO)
- Published
- 2019-05
- Volume
- 76
- Issue
- 3
- Pages
- 261-265
- ISSN
- 0103-9016 (ISSN-L)
- 1678-992X
- OpenAlex
- W2919951758
- Cited by
- 11
- References
- 0
- Citations by year
- 2024: 2 · 2022: 3 · 2021: 5 · 2020: 1
- FWCI
- 0.84
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Scientia Agricola (publishedVersion, cc-by)
- Americanae (AECID Library) (publishedVersion, other-oa)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
- Americanae (AECID Library) (submittedVersion, other-oa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
- Funders
- Fundação de Amparo à Pesquisa do Estado de São Paulo
- Topics
- Physical Sciences › Chemistry › Inorganic Chemistry › Coconut Research and Applications
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Identification and Quantification in Food
- Physical Sciences › Chemistry › Analytical Chemistry › Spectroscopy and Chemometric Analyses
- Keywords
- coconut water, food adulteration, sugar adulteration, stable carbon isotopes, isotope enrichment, cane sugar, soluble solids, food safety regulation
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