Determination of the Geographical and Botanical Origin of Hops (<i>Humulus lupulus</i> L.) Using Stable Isotopes of C, N, and S

Ocvirk, Miha; Ogrinc, Nives; Košir, Iztok Jože

doi:10.1021/acs.jafc.7b06010

Cited by 15 publications

(12 citation statements)

References 20 publications

(50 reference statements)

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“…Promising methods, some of which are already being used routinely, relate to the detection of animal commodities, such as meat, dairy products, fish, and shellfish with regard to the detection of the geographical origin, the feeding method of the animals, the production method (organic vs conventional) or whether it is wildlife or breeding [155]. In addition, there are numerous examples of applications for plant-based foods, which mainly refer to the proof of geographical origin, the fertilizers used, and the botanical origin, for example for hops [156], ginseng [157], and tomatoes [158].…”

Section: Metallomics-and Isotoplomics-based Methodsmentioning

confidence: 99%

Food authentication in real life: How to link nontargeted approaches with routine analytics?

Creydt¹,

Fischer²

2020

Electrophoresis

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In times of increasing globalization and the resulting complexity of trade flows, securing food quality is an increasing challenge. The development of analytical methods for checking the integrity and, thus, the safety of food is one of the central questions for actors from science, politics, and industry. Targeted methods, for the detection of a few selected analytes, still play the most important role in routine analysis. In the past 5 years, nontargeted methods that do not aim at individual analytes but on analyte profiles that are as comprehensive as possible have increasingly come into focus. Instead of investigating individual chemical structures, data patterns are collected, evaluated and, depending on the problem, fed into databases that can be used for further nontargeted approaches. Alternatively, individual markers can be extracted and transferred to targeted methods. Such an approach requires (i) the availability of authentic reference material, (ii) the corresponding highresolution laboratory infrastructure, and (iii) extensive expertise in processing and storing very large amounts of data. Probably due to the requirements mentioned above, only a few methods have really established themselves in routine analysis. This review article focuses on the establishment of nontargeted methods in routine laboratories. Challenges are summarized and possible solutions are presented.

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Section: Metallomics-and Isotoplomics-based Methodsmentioning

confidence: 99%

Food authentication in real life: How to link nontargeted approaches with routine analytics?

Creydt¹,

Fischer²

2020

Electrophoresis

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“…No statistically significant difference was observed in the δ 13 C values (average −26.7 ± 0.8‰) between conventionally and organically produced hops. However, δ 15 N values in European samples were lower than the organically produced hops [24].…”

Section: Hops and Beer Samplesmentioning

confidence: 67%

“…However, most literature studies are concerned with source identification, and it appears that there are no published studies on the type of production regime, i.e., conventional versus organic beer. For example, δ 13 C values were applied in studies to identify the geographical and botanical source of plants used for beer production [17,18,23,24], rather than management practice discrimination.…”

Section: Stable Isotopesmentioning

confidence: 99%

Differences in the Levels of the Selected Phytoestrogens and Stable Isotopes in Organic vs. Conventional Hops and Beer

Golubović

Heath

Košir

et al. 2021

Foods

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Xanthohumol (XN), isoxanthohumol (IX) and 8-prenylnaringenin (8-PN) are important prenylflavonoids present in hops with potential beneficial properties. In this study, we examined differences in the content of XN, IX and 8-PN in hops and beer produced under organic and conventional production regimes. A An ultra-high performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) method for analysing XN, IX and 8-PN in hops and beer was developed and validated, with LOQ ranging from 0.5 to 10 ng/mL. Finally, we examined 15N/14N and 12C/13C isotope ratios in the hops and beer using isotope ratio mass spectrometry (IRMS). The results show no statistically significant difference in the content of the selected prenylflavonoids between organic and conventionally produced hops and beer—in the whole sample group, as well as between the matched pairs. Stable isotope analysis indicated that only δ15N values are statistically higher in organically produced hops and beer. However, the differentiation according to the type of production could not be made solely based on the δ15N signature, but it could be used to provide supporting evidence.

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“…In particular, the clams from JN showed the lowest discrimination rate, where only 14 clams were appropriately identified and 12 clams were found to have other origins. Although previous studies have shown that the combination of δ 13 C and δ 15 N can be used for determining the geographical origins of agricultural products, plants, and meat [48,49], we have demonstrated the necessity of adding other factors that can increase the ability to identify habitats and other geographic information in food products, such as bivalves [19]. Given that the values of δD, δ 18 O, and δ 34 S measured in clams from the three regions of Korea did not demonstrate great discriminatory power against LDA [19], FAs were additionally selected in the next step of this study as a potential parameter for providing habitat information.…”

Section: First Step: a Dual-isotope Analysis For Distinct Geographica...mentioning

confidence: 99%

Stepwise Approach for Tracing the Geographical Origins of the Manila Clam Ruditapes philippinarum Using Dual-Element Isotopes and Carbon Isotopes of Fatty Acids

Won

Kim

et al. 2022

Foods

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While there are many studies that have reported methods for tracing the geographical origin of seafoods, most of them have focused on identifying parameters that can be used effectively and not the direct application of these methods. In this study, we attempted to differentiate the geographical origins of the Manila clam R. philippinarum collected from different sites in Korea, the Democratic People’s Republic of Korea, and China using a combination of analyses based on dual-element isotopes, fatty acids (FAs), and compound-specific isotopic analysis of FAs. We hypothesized that a stepwise application of new parameters to unclassified samples could achieve this objective by integrating new information while reducing time and labor. The FA profiles and compound-specific carbon isotopic values of FAs were found to enhance the discrimination power of determining the geographic origin up to 100%. Our findings demonstrate the advantageousness of using several parameters simultaneously over the conventional method of employing individual analytical methods when identifying geographic origins of the Manila clam, which could have implications for tracing the origins of different shellfish species or other food products as well.

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Determination of the Geographical and Botanical Origin of Hops (Humulus lupulus L.) Using Stable Isotopes of C, N, and S

Cited by 15 publications

References 20 publications

Food authentication in real life: How to link nontargeted approaches with routine analytics?

Food authentication in real life: How to link nontargeted approaches with routine analytics?

Differences in the Levels of the Selected Phytoestrogens and Stable Isotopes in Organic vs. Conventional Hops and Beer

Stepwise Approach for Tracing the Geographical Origins of the Manila Clam Ruditapes philippinarum Using Dual-Element Isotopes and Carbon Isotopes of Fatty Acids

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