Assuring food safety and traceability of polished rice from different production regions in China and Southeast Asia using chemometric models

Liu, Zhi; Zhang, Weixing; Zhang, Yongzhi; Chen, Tianjin; Shao, Shuai; Zhou, Li; Yuan, Yujie; Xie, Tingting; Rogers, Karyne M.

doi:10.1016/j.foodcont.2018.12.011

Cited by 68 publications

(25 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Liu et al were able to differentiate polished rice from different growing regions in China with rice imported from Thailand and Malaysia with 85% accuracy. Their ANOVA results showed that Mg, Al, Ti, V, Vo, Zn, Rb, Sr, Sn, and Bi in the rice imported from Thailand/Malaysia are significantly different than rice in regions in China.…”

Section: Discussionmentioning

confidence: 99%

“…Other factors including the absorbability of the plant, chemical state of the soil, climate, microorganism activity, pesticide use, pollution, water, cultivation practices, and processing methods can also cause elemental concentration differences. These differences have been determined using various analytical techniques such as wavelength dispersive X‐ray fluorescence (WDXRF), inductively coupled plasma–mass spectrometry (ICP‐MS), isotope ratio–mass spectrometry (IRMS), and laser ablation–inductively coupled plasma–mass spectrometry (LA–ICP–MS) and have been used for geographical origin determination . More recent work includes the origin determination of cocaine, marijuana, and synthetic cannabinoids using elemental content measured by ICP‐MS .…”

mentioning

confidence: 99%

See 1 more Smart Citation

Differentiation of Commercially Available Kratom by Purported Country of Origin using Inductively Coupled Plasma–Mass Spectrometry,

Braley

Hondrogiannis

2019

Journal of Forensic Sciences

View full text Add to dashboard Cite

Kratom is a plant material exhibiting both analgesic and stimulant effects and is also forensically relevant since it is abused as a “legal high.” It is regulated in several countries but not scheduled in the United States at the federal level. This study used inductively coupled plasma–mass spectrometry (ICP–MS) to measure the concentrations of 13 elements in 19 kratom samples obtained from an online distributor selling kratom, from Borneo, Malaysia, Indonesia, Thailand, and Vietnam, for the purpose of using the elements to discriminate among purported country of origin, “suborigin,” and strain. Analysis of variance revealed statistical differences in concentrations of elements from each group, while discriminant function analysis (using leave‐one‐out classification) successfully classified kratom samples by their purported country of origin (100%), “suborigin,” (100%), and strain (86%). Our method illustrates the possibility of utilizing ICP–MS for determination of commercially available kratom samples by purported origin, “subororign,” or by product line.

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Differentiation of Commercially Available Kratom by Purported Country of Origin using Inductively Coupled Plasma–Mass Spectrometry,

Braley

Hondrogiannis

2019

Journal of Forensic Sciences

View full text Add to dashboard Cite

show abstract

“…10 Recently, various chemical analytical strategies based on chromatographic and spectral analysis methods have been developed for determining geographical origin and applied to a range of agro-products, e.g. wine, [11][12][13] cereals, [14][15][16][17] honey, 18 coffee beans, 19 oil, 20 and cocoa beans. 21 However, when applied to tea, these strategies are mostly useful for the discrimination of tea from geographically distinct countries (e.g.…”

mentioning

confidence: 99%

Geographical traceability of Chinese green tea using stable isotope and multi‐element chemometrics

Liu

Yuan

Zhang

et al. 2019

Rapid Comm Mass Spectrometry

Self Cite

View full text Add to dashboard Cite

Rationale Deliberate and fraudulent origin mislabeling of Chinese green tea motivated by large price differences often brings significant food safety risks and damages consumer trust. Currently, there is no reliable method to verify the origin of green tea produced in China. Stable isotope and multi‐element analyses combined with statistical models are widely acknowledged as useful traceability techniques for many agro‐products, and could be developed to confirm the geographical origin of Chinese green tea and, more importantly, combat illegal green tea mislabeling and fraud. Methods An analytical strategy combining elemental analyzer/isotope ratio mass spectrometry (EA/IRMS) and inductively plasma coupled mass spectrometry (ICP‐MS) with chemometrics tools was used to confirm the origin of green tea grown in the main tea production provinces around China. Stable C, N, H, O isotope ratios and twenty elements were measured to build mathematical discriminant models using unsupervised principal component analysis (PCA) and supervised linear discriminant analysis (LDA). Two main problems: (i) tracing the origin of Chinese green tea from different tea growing provinces (Zhejiang, Shandong, and other provinces); (ii) authentication of high‐value Westlake Longjing tea from the Westlake region and surrounding areas in Zhejiang province, were investigated and assessed. Results The results demonstrated that PCA and follow‐up LDA based on stable isotope and multi‐element signatures can verify the geographical origin of Chinese green tea from different provinces, and even localized zones in the same province could be distinguishable, with discrimination accuracies higher than 92.3% and 87.8%, respectively. Conclusions Geochemical fingerprinting techniques coupled with chemometric tools offer an accurate and effective verification method for the geographical origin of Chinese green tea, providing a promising tool to combat fraudulent mislabeling of high‐value green tea.

show abstract

“…Origin and traceability determination of agro‐products using SIA is based on the assumption that the isotope ratios of plants reflect their specific growth environment, farming or feeding practices . Therefore, the stable isotope composition of different plant components retains important geographic and climatic information that describes the conditions of organic matter formation .…”

Section: Introductionmentioning

confidence: 99%

“…[22][23][24] Origin and traceability determination of agro-products using SIA is based on the assumption that the isotope ratios of plants reflect their specific growth environment, farming or feeding practices. 25,26 Therefore, the stable isotope composition of different plant components retains important geographic and climatic information that describes the conditions of organic matter formation. [27][28][29] For example, the carbon isotope ratios of organic matter record environmental effects on plant photosynthesis, with the carbon isotopic composition of plants largely being determined by the photosynthetic pathways (C3, C4 or CAM) used to fix atmospheric CO 2 into organic matter.…”

mentioning

confidence: 99%

Influence of leaf age, species and soil depth on the authenticity and geographical origin assignment of green tea

Zhang

et al. 2019

Rapid Comm Mass Spectrometry

Self Cite

View full text Add to dashboard Cite

Rationale Stable isotope fractionation occurring during leaf growth provides internal characteristics for identifying the geographical origin, traceability and authentication of tea. Studying the influence of leaf age, species and the relationship with the cultivated soil may reveal previously undocumented stable isotope fractionation mechanisms, and provide a deeper understanding of the physiological isotopic effects on the tractability and authentication accuracy of green tea to combat mislabeling and fraudulent conduct. Methods A total of 36 pairs of young (one bud with one leaf) and mature growth (older leaf) samples from two species of Longjing tea (Longjing #43 and Colonial cultivar) and corresponding cultivation soil samples from two different depth layers (0–20 cm and 20–40 cm) were collected in Westlake district, Hangzhou, Zhejiang province, China. Four stable isotope ratios (δ13C, δ15N, δ2H, and δ18O values) were measured using an elemental analyzer coupled with an isotope ratio spectrometer. Linear correlation and one‐way analysis of variance (ANOVA) statistical analyses were performed to investigate isotopic fractionation mechanisms during plant growth, and reflect the dynamic physiological processes from soil to leaf. Results The carbon and nitrogen isotope ratios (δ13C and δ15N values) reflected the absorption, migration and fractionation of carbon dioxide and nitrogenous nutrients during photosynthesis, nutrient uptake, nitrogen fixation and leaf respiration. The water isotope ratios (δ2H and δ18O values) reflected the use and fractionation of water by tea plants at different growth stages. Conclusions Considerable differences were found for hydrogen and oxygen isotope ratios according to leaf age, revealing complex isotopic fractionation mechanisms and possible interference factors. Leaf maturity effects should be considered, as they will influence the precision and accuracy of models when assigning the geographical origin, traceability and authentication of tea.

show abstract

Assuring food safety and traceability of polished rice from different production regions in China and Southeast Asia using chemometric models

Cited by 68 publications

References 32 publications

Differentiation of Commercially Available Kratom by Purported Country of Origin using Inductively Coupled Plasma–Mass Spectrometry,

Differentiation of Commercially Available Kratom by Purported Country of Origin using Inductively Coupled Plasma–Mass Spectrometry,

Geographical traceability of Chinese green tea using stable isotope and multi‐element chemometrics

Influence of leaf age, species and soil depth on the authenticity and geographical origin assignment of green tea

Contact Info

Product

Resources

About