AI Article Synopsis
- The study analyzes nitrogen and carbon isotopes in amino acids to differentiate between organically and conventionally grown wheat.
- The research focused on wheat samples fertilized with synthetic nitrogen, animal manures, or green manures from legumes, using advanced gas chromatography techniques.
- Findings indicate that specific amino acids can provide better discrimination between organic and conventional wheat than traditional stable isotope bulk tissue analysis, highlighting the method's potential for improving organic certification processes.
Article Abstract
We present a study deploying compound-specific nitrogen and carbon isotope analysis of amino acids to discriminate between organically and conventionally grown plants. We focused on grain samples of common wheat and durum wheat grown using synthetic nitrogen fertilizers, animal manures, or green manures from nitrogen-fixing legumes. The measurement of amino acid δ(15)N and δ(13)C values, after protein hydrolysis and derivatization, was carried out using gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS). Our results demonstrated that δ(13)C of glutamic acid and glutamine in particular, but also the combination of δ(15)N and δ(13)C of 10 amino acids, can improve the discrimination between conventional and organic wheat compared to stable isotope bulk tissue analysis. We concluded that compound-specific stable isotope analysis of amino acids represents a novel analytical tool with the potential to support and improve the certification and control procedures in the organic sector.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.jafc.5b00662 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Functional analysis of the PIP5K1A gene in Liaoning Cashmere goats: an investigation based on bioinformatics, tissue localization, and biological functions.
Cell Mol Biol (Noisy-le-grand)
January 2025
College of Life Sciences, Liaoning Normal University, Dalian 116000, Liaoning Province, China.
Liaoning cashmere goat is an outstanding breed in China primarily for cashmere production, with strict controls against genetic outflow. Melatonin(MT) is a key factor affecting cashmere growth, and preliminary transcriptome sequencing indicated that melatonin upregulates the expression of the PIP5K1A gene in skin fibroblasts. To predict the physicochemical properties of PIP5K1A in Liaoning cashmere goats, ascertain the tissue localization of PIP5K1A in their skin, and explore the role and mechanism of PIP5K1A in the proliferation of skin fibroblasts.
View Article and Find Full Text PDFThe impact of COVID-19 infection on thyroid function.
Cell Mol Biol (Noisy-le-grand)
January 2025
Department of Pathology and Forensic Medicine, College of Medicine, University of AlQadisiyah, Iraq.
Extensive research on COVID-19 has revealed a notable link between the disease and thyroid disorders, highlighting complex interactions between thyroid hormones, immunomodulatory signaling molecules within the thyroid gland, and viral infections. This study evaluated the relationship between thyroid function and COVID-19 in Iraqi patients at Adiwaniyah Teaching Hospital. The cohort for this investigation comprised all patients who were admitted to the isolation center at the Teaching Hospital during the timeframe extending from January 2024 to June 2024.
View Article and Find Full Text PDFComparative Analysis of Acquired Resistance to Bortezomib in Prostate Cancer Cells Using Proteomic and Bioinformatic Tools.
J Cell Mol Med
January 2025
Department of Medical Biology, Faculty of Medicine, Kutahya Health Sciences University, Kutahya, Turkey.
Chemotherapy is a potent tool against cancer, but drug resistance remains a major obstacle. To combat this, understanding the molecular mechanisms behind resistance in cancer cells and the protein expression changes driving these mechanisms is crucial. Targeting the Ubiquitin-Proteasome System (UPS) has proven effective in treating multiple myeloma and shows promise for solid tumours.
View Article and Find Full Text PDFEnhancing newborn screening sensitivity and specificity for missed NICCD using selected amino acids and acylcarnitines.
Orphanet J Rare Dis
January 2025
Department of Genetics and Metabolism, Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, No. 3333 Binsheng Road, Binjiang District, Hangzhou, 310053, Zhejiang, China.
Purpose: To enhance the detection rate of Neonatal Intrahepatic Cholestasis caused by Citrin Deficiency (NICCD) through newborn screening (NBS), we analyzed the metabolic profiles of missed patients and proposed a more reliable method for early diagnosis.
Methods: In this retrospective study, NICCD patients were classified into "Newborn Screening" (64 individuals) and "Missed Screening" (52 individuals) groups. Metabolic profiles were analyzed using the non-derivatized MS/MS Kit, and genetic mutations were identified via next-generation sequencing and confirmed by Sanger sequencing.
Circulating serum metabolites as biomarkers and predictors of residual feed intake in lactating dairy cows.
Sci Rep
January 2025
Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G2P5, Canada.
Article Synopsis
- This study examines how serum metabolite profiles can help understand feed efficiency in lactating Holsteins and identify biomarkers for predicting residual feed intake (RFI).
- Comparisons were made between high and low RFI cows at different lactation stages, revealing significant differences in various metabolites, especially notable changes in early and mid-lactation.
- The findings suggest that specific metabolites, like p-Hydroxyhippuric acid and acetylornithine, could serve as effective biomarkers for predicting RFI, with models showing varying predictive accuracy across lactation stages.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!