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Spectroscopy and Chromatography in Food and Environmental Analysis

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A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Analytical Chemistry".

Deadline for manuscript submissions: 25 June 2024 | Viewed by 5309

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Special Issue Editors

Dr. Fei Shen

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Guest Editor

College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, China
Interests: food science; environmental analysis; food safety; spectroscopy; chemometrics

Dr. Shuxiang Fan

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Guest Editor

Intelligent Equipment Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
Interests: spectral analysis; hyper spectral imaging; food safety; nondestructive detection

Special Issue Information

Dear Colleagues,

The analysis of ingredients and harmful substances in the food and environment has always been a difficult problem worth studying. The advantages of spectroscopy and chromatographic technology in the field of separation and detection determine its leading position in food and environmental analyses. The development of spectroscopy and chromatography technology promoted people's understanding of food nutrition, safety, and other aspects, and also deepened people's awareness of environmental pollution and protection. Spectroscopy and chromatographic technologies are widely used to solve complex problems and challenges in society, such as food safety and environmental protection in the development of the food industry.

The Special Issue “Spectroscopy and Chromatography in Food and Environmental Analysis” aims to summarize the state-of-the-art methods of the research, technology, and novel applications of spectroscopy and chromatography technology in the field of food and environmental analysis and welcomes the submission of previously unpublished manuscripts and original work on all the above-mentioned aspects.

Dr. Fei Shen
Dr. Shuxiang Fan
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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Keywords

spectroscopy
chromatography
food analysis
environmental analysis
mass spectrometry
environmental pollutant

Published Papers (4 papers)

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Research

14 pages, 1017 KiB

Open AccessArticle

Analysis of the Influence of Lactiplantibacillus plantarum and Lacticaseibacillus rhamnosus Strains on Changes in the Hexachlorobenzene Content in Fermented Mare Milk during Refrigerated Storage

by Agata Witczak, Anna Mituniewicz-Małek and Izabela Dmytrów

Molecules 2024, 29(2), 528; https://doi.org/10.3390/molecules29020528 - 21 Jan 2024

Viewed by 774

Abstract

(1) Background: Hexachlorobenzene (HCB) is a persistent organic pollutant that is possibly carcinogenic to humans. It is still found in the environment, humans and animals, and in foods, including milk and dairy products; (2) Methods: The influence of the probiotic cultures Lacticaseibacillus rhamnosus LCR and Lactiplantibacillus plantarum subsp. plantarum LP on the possibility of effecting the biodegradation of HCB in dairy products fermented from mare milk was investigated, taking into account the product storage time (maximum 21 days). HCB content was determined using the GC/MS method; (3) Results: A strong negative Pearson correlation (p < 0.05) was found between HCB concentration and the refrigeration storage time of the fermented beverages. The highest HCB reduction was observed in milk fermented with both Lacticaseibacillus rhamnosus LCR and Lactiplantibacillus plantarum subsp. plantarum LP (78.77%), while the lowest was noted when only Lactiplantibacillus plantarum subsp. plantarum LP was used (73.79%); (4) Conclusions: This pilot study confirmed that probiotics commonly used to give products health-promoting properties can also contribute to reducing the content of undesirable substances, and the bacterial cultures used might provide an alternative method for reducing HCB residues in fermented drinks. Full article

(This article belongs to the Special Issue Spectroscopy and Chromatography in Food and Environmental Analysis)

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13 pages, 2025 KiB

Open AccessArticle

Impact of Lactation Stage on the Metabolite Composition of Bovine Milk

by Claire Connolly, Xiaofei Yin and Lorraine Brennan

Molecules 2023, 28(18), 6608; https://doi.org/10.3390/molecules28186608 - 14 Sep 2023

Viewed by 1124

Abstract

Bovine milk is a nutrient-dense food and a major component of the human diet. Therefore, understanding the factors that impact its composition is of great importance. Applications of metabolomics provide in-depth analysis of the metabolite composition of milk. The objective of this research was to examine the impact of lactation stage on bovine milk metabolite levels. Metabolomic analysis of bovine milk powder samples across lactation (N = 18) was performed using nuclear magnetic resonance (¹H-NMR) spectroscopy and liquid chromatography–tandem mass spectrometry (LC-MS/MS). Forty-one metabolites were identified and quantified in the ¹H-NMR spectra. Statistical analysis revealed that 17 metabolites were significantly different across lactation stages (FDR < 0.05), of which the majority had higher levels in early lactation. In total, 491 metabolites were measured using LC-MS/MS, of which 269 had significantly different levels across lactation (FDR < 0.05). Compound classes significantly affected by lactation stage included phosphatidylcholines (59%) and triglycerides (64%), of which 100% of phosphatidylcholines and 61% of triglycerides increased from early lactation onwards. Our study demonstrates significant differences in metabolites across the stages of lactation, with early-lactation milk having a distinct metabolomic profile. More research is warranted to further explore these compositional differences to inform animal feeding practice. Full article

(This article belongs to the Special Issue Spectroscopy and Chromatography in Food and Environmental Analysis)

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12 pages, 3506 KiB

Open AccessArticle

Fast Detection of Heavy Metal Content in Fritillaria thunbergii by Laser-Induced Breakdown Spectroscopy with PSO-BP and SSA-BP Analysis

by Xinmeng Luo, Rongqin Chen, Muhammad Hilal Kabir, Fei Liu, Zhengyu Tao, Lijuan Liu and Wenwen Kong

Molecules 2023, 28(8), 3360; https://doi.org/10.3390/molecules28083360 - 11 Apr 2023

Cited by 3 | Viewed by 1324

Abstract

Fast detection of heavy metals is important to ensure the quality and safety of herbal medicines. In this study, laser-induced breakdown spectroscopy (LIBS) was applied to detect the heavy metal content (Cd, Cu, and Pb) in Fritillaria thunbergii. Quantitative prediction models were established using a back-propagation neural network (BPNN) optimized using the particle swarm optimization (PSO) algorithm and sparrow search algorithm (SSA), called PSO-BP and SSA-BP, respectively. The results revealed that the BPNN models optimized by PSO and SSA had better accuracy than the BPNN model without optimization. The performance evaluation metrics of the PSO-BP and SSA-BP models were similar. However, the SSA-BP model had two advantages: it was faster and had higher prediction accuracy at low concentrations. For the three heavy metals Cd, Cu and Pb, the prediction correlation coefficient (R_p²) values for the SSA-BP model were 0.972, 0.991 and 0.956; the prediction root mean square error (RMSEP) values were 5.553, 7.810 and 12.906 mg/kg; and the prediction relative percent deviation (RPD) values were 6.04, 10.34 and 4.94, respectively. Therefore, LIBS could be considered a constructive tool for the quantification of Cd, Cu and Pb contents in Fritillaria thunbergii. Full article

(This article belongs to the Special Issue Spectroscopy and Chromatography in Food and Environmental Analysis)

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14 pages, 2845 KiB

Open AccessArticle

Agarose Film-Based Liquid–Solid Conversion for Heavy Metal Detection of Water Samples by Laser-Induced Breakdown Spectroscopy

by Zhengkai You, Xiaolong Li, Jing Huang, Rongqin Chen, Jiyu Peng, Wenwen Kong and Fei Liu

Molecules 2023, 28(6), 2777; https://doi.org/10.3390/molecules28062777 - 19 Mar 2023

Cited by 1 | Viewed by 1484

Abstract

Laser-induced breakdown spectroscopy (LIBS) shows promising applications in the analysis of environmental heavy metals. However, direct analysis in water by LIBS faces the problems of droplet splashing and laser energy decay. In this study, a novel liquid–solid conversion method based on agarose films is proposed to provide an easy-to-operate and sensitive detection of heavy metals. First, the water samples were converted into semi-solid hydrogels with the aid of agarose and then dried into agarose films to make the signal intensities stronger. The calibration curves of Cd, Pb and Cr were constructed. The proposed method was validated by standard heavy metal solutions and real water samples. The results showed that the values of R² were 0.990, 0.989 and 0.975, and the values of the LOD were 0.011, 0.122 and 0.118 mg L⁻¹ for Cd (I) 228.80, Pb (I) 405.78 and Cr (I) 427.48 nm, respectively. The RMSEs of validation were 0.068 (Cd), 0.107 (Pb) and 0.112 mg·L⁻¹ (Cr), and the recovery values were in the range of 91.2–107.9%. The agarose film-based liquid–solid conversion method achieved the desired ease of operation and sensitivity of LIBS in heavy-metal detection, thereby, showing good application prospects in heavy metal monitoring of water. Full article

(This article belongs to the Special Issue Spectroscopy and Chromatography in Food and Environmental Analysis)

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