Stable Isotope Determination in Edible Mushrooms from the Spontaneous Flora of Transylvania

Puşcaş, Romulus; Cristea, Gabriela; Radu, S.

doi:10.1080/00032719.2017.1376218

Cited by 7 publications

(8 citation statements)

References 15 publications

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“…They found that all four isotope ratios were significantly different among the six cultivation regions. The same results were obtained by Puscas et al [134] that determined δ 13 C on bulk fungi and δ 2 H and δ 18 O in the water extracted from the samples. In particular, they were able to distinguish samples from different Transilvania areas and, furthermore, found a link between the isotopic composition and the characteristics of the place of growth of the fungi (hilly or mountainous).…”

Section: Stable Isotope Ratio Analysissupporting

confidence: 87%

Selective Methods to Investigate Authenticity and Geographical Origin of Mediterranean Food Products

Krajnc

Bontempo

Araus

et al. 2020

Food Reviews International

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The Mediterranean diet is promoted as one of the healthiest and closely linked to socioecological practices, knowledge and traditions, promoting sustainable food production, and linking geographical origin with food quality and ecosystem services. Consumer adherence to this dietary pattern drives increased consumption of authentic "premium" foods, such as Iberian pig meat and dry-cured ham from Portugal and Spain, argan oil from Morocco, "Djebel" lamb from Tunisia and truffles from Italy and Slovenia, i.e., food products that respond to current ethical, environmental and socially sustainable demands. Geographical indication and appellation of origin can increase traditional food products competitiveness, but the high-value recognition of these products can also lead to economically motivated product adulteration. It is therefore imperative to protect the high added value of these unique food products by ensuring their quality, authenticity, provenance and sustainable production systems. In this review, we provide a critical evaluation of the analytical methods that are currently used for the determination of provenance and authenticity of these Mediterranean products as well as possible strategies for improving the throughput and affordability of the methods discussed.

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Section: Stable Isotope Ratio Analysissupporting

confidence: 87%

Selective Methods to Investigate Authenticity and Geographical Origin of Mediterranean Food Products

Krajnc

Bontempo

Araus

et al. 2020

Food Reviews International

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“…However, the direct relationship between the stable hydrogen signature of groundwater and that of water extracted from fungi could be shown for several other fungi species grown in mountainous regions in Romania. 19 Namely, previous precipitation events strongly influenced the δ 2 H value of the water present in the fungi. 19 In our study, stable hydrogen ratio analysis was carried out with truffle lyophilizate.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…18 With fungi consisting of up to ∼90% water, their tissues are in close relationship with groundwater, which, in turn, is strongly dependent upon precipitation input. 19 Hence, δ 2 H values of fungal tissue should be closely linked to geographic and climatic characteristics of their growing area. However, to our knowledge, thus far, only little information on δ 2 H values of fungi in general and more particular of Tuber species can be found in the literature.…”

Section: E (( E/ Ementioning

confidence: 99%

Geographical and Species Differentiation of Truffles (Tuber spp.) by Means of Stable Isotope Ratio Analysis of Light Elements (H, C, and N)

Krauß

Vetter

2020

J. Agric. Food Chem.

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Truffles (Tuber spp.) are considered the most expensive edible fungi and, therefore, are highly prone to food fraud. In this study, authentic truffles from different countries of origin and species were characterized by the determination of their stable carbon, nitrogen, and hydrogen isotope ratios (bulk δ2H, δ13C, and δ15N values). Chinese truffles from Yunnan or related provinces (n = 19) could be well-separated from all European samples (eight countries; n = 105) by means of their significantly (p < 0.05) more negative δ2H values. Furthermore, samples of the second most expensive European species Tuber magnatum were both more enriched in 15N and more depleted in 13C compared to the remaining samples, which allowed for an unequivocal differentiation. Hence, stable isotope ratio analysis could be of high value in terms of authentication of truffles.

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“…In cases of photosynthetic-or soil-based agricultural products, δ 13 C is mainly associated with the photosynthetic system (C3 versus C4) 30 , whereas δ 15 N is affected by regional agricultural practices, N availability, and isotopic fractionation by chemical, physical, microbial, and nutritional conditions in local soil 31,32 . Additionally, δ 18 O is influenced by geoclimatic conditions (i.e., altitude, latitude, continental effects, relative humidity, temperature, and amount of precipitation) 33 . δ 34 S is mostly related to soil geological properties and is somewhat affected by anthropogenic activities and seaspray effects 23,28,34,35 .…”

Section: Introductionmentioning

confidence: 99%

An origin identification model for labeling of shiitake (Lentinula edodes)

et al. 2021

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With the increasing globalization of the food trade across countries and continents, reliable identification of the geographical origin of products is critical. In this study, we describe the limitations of the current origin labeling system for non-soil-based agricultural products and suggest alternative strategies for the identification of the geographical origin of such products. An origin identification model based on stable isotope ratio analysis combined with discriminant analysis is used to evaluate the similarities and dissimilarities between domestic and foreign shiitake mushrooms, including Chinese inoculated sawdust blocks and Chinese origin. The results show a classification sensitivity of 92.0%, classification specificity of 91.5%, and overall accuracy of 93.5%. In particular, δ15N was the most important isotope marker for the identification of the origin of shiitake mushrooms. Hence, the current origin labeling system for mushroom species has to be revised to establish fair trade and avoid improper origin labeling in the global shiitake market.

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Stable Isotope Determination in Edible Mushrooms from the Spontaneous Flora of Transylvania

Cited by 7 publications

References 15 publications

Selective Methods to Investigate Authenticity and Geographical Origin of Mediterranean Food Products

Selective Methods to Investigate Authenticity and Geographical Origin of Mediterranean Food Products

Geographical and Species Differentiation of Truffles (Tuber spp.) by Means of Stable Isotope Ratio Analysis of Light Elements (H, C, and N)

An origin identification model for labeling of shiitake (Lentinula edodes)

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