1H NMR-based fingerprinting of eleven Mexican Capsicum annuum cultivars

Florentino-Ramos, Elideth; Villa‐Ruano, Nemesio; Hidalgo-Martínez, Diego; Meraz, Moisés Ramírez; Méndez-Aguilar, Reinaldo; Velásquez‐Valle, Rodolfo; Zepeda, L. Gerardo; Pérez‐Hernández, Nury; Becerra‐Martínez, Elvia

doi:10.1016/j.foodres.2019.03.025

Cited by 51 publications

(26 citation statements)

References 41 publications

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“…Anaheim is a source rich in vitamins, carotenoids, flavonoids, etc. [64], the most accepted mechanism suggests that, when zinc nitrate is in solution with the extract, the Zn 2+ ions are uniformly distributed [65]. In the process, as the Zn 2+ ions are in direct interaction with the OH groups of the biomolecules in the extract, the biomolecules work as electron donors, donating their electrons to the electrophilic Zn 2+ species, leading to the oxidation of the hydroxyl groups and the reduction of the Zn 2+ ions [66].…”

Section: Formation Mechanismmentioning

confidence: 99%

ZnO Semiconductor Nanoparticles and Their Application in Photocatalytic Degradation of Various Organic Dyes

et al. 2021

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The biosynthesis of oxide semiconductor nanoparticles (NPs) using materials found in nature opens a wide field of study focused on sustainability and environmental protection. Biosynthesized NPs have the capacity to eliminate organic dyes, which pollute water and cause severe damage to the environment. In the present work, the green synthesis of zinc oxide (ZnO) NPs was carried out using Capsicum annuum var. Anaheim extract. The photocatalytic elimination of methylene blue (MB), methyl orange (MO), and Rhodamine B (RhB) in UV radiation was evaluated. The materials were characterized by scanning and transmission electron microscopy (SEM and TEM) and SEM-coupled energy dispersive spectroscopy (EDS), attenuated total reflectance-infrared (ATR-IR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Photoluminescence (PL), and ultraviolet-visible spectroscopy (UV-Vis). The TEM analysis showed the NPs have an average size of 40 nm and quasi-spherical shape. ATR-IR showed the ZnO NPs contained functional groups from the extract. The analysis through XRD indicated that the NPs have a hexagonal zincite crystal structure with an average crystallite size of approximately 17 nm. The photoluminescence spectrum (PL) presented an emission band at 402 nm. From the UV-Vis spectra and TAUC model, the band-gap value was found to be 2.93 eV. Finally, the photocatalytic assessment proved the ZnO NPs achieved 100% elimination of MB at 60 min exposure, and 85 and 92% degradation of MO and RhB, respectively, at 180 min. This indicates that ZnO NPs, in addition to using a friendly method for their synthesis, manage to have excellent photocatalytic activity in the degradation of various organic pollutants.

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Section: Formation Mechanismmentioning

confidence: 99%

ZnO Semiconductor Nanoparticles and Their Application in Photocatalytic Degradation of Various Organic Dyes

et al. 2021

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“…Florentino‐Ramos et al 38 . described the 1 H NMR‐based metabolomic profiling of 11 cultivars belonging to the Capsicum annuum species ( Capsicum annuum cv.…”

Section: Nmr‐based Chemometric Applicationsmentioning

confidence: 99%

“…The vertical dendrogram shows the cultivars and the horizontal labels represent the compounds clustered by similarity. Reprinted from Florentino‐Ramos et al ., 38 with permission from Elsevier.…”

Section: Nmr‐based Chemometric Applicationsmentioning

confidence: 99%

Applicability of high‐resolution NMR in combination with chemometrics for the compositional analysis and quality control of spices and plant‐derived condiments

Belmonte-Sánchez¹,

Romero‐González²

2021

J Sci Food Agric

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Over the last years, the consumption of spices and plant‐derived condiments has increased considerably, owing to new culinary trends. Unfortunately, the current marketing channels make them highly vulnerable to adulteration and food fraud. High‐resolution nuclear magnetic resonance (NMR) is a powerful tool for the compositional study of spices and plant‐derived condiments. It allows the chemical characterization of a wide range of polar and non‐polar metabolites, and provides unique structural information not available by other techniques. The chemometric‐based analysis of NMR ‘fingerprints’ has been used to discriminate samples according to species and geographical origin and to detect adulterations, among other applications. The comprehensive identification and quantification of marker compounds can be achieved even in complex mixtures, demonstrating a great potential for high‐throughtput quality control applications. © 2020 Society of Chemical Industry

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“…With these approaches, the aim is to find a group of marker compounds, which are inferred from shifts of different nuclei that characterize skeletons, aromatic rings, heteroatoms, and typical structural arrangements but are not fully identified. Subsequently, statistical analysis is conducted to classify the samples and draw conclusions based on discrimination, aggrupation, or differentiation of selected variables [45,46]. Technical improvements were made in the last two decades to make definitively the combination of NMR spectroscopy with LC a successful arrangement [47,48] if metabolite profiling or targeted metabolomics is the strategy of the metabolomic study.…”

Section: Technologies: Instrumental Techniques For the Acquisition Of Spectroscopic And Spectrometric Datamentioning

confidence: 99%

Metabolomics of Chlorophylls and Carotenoids: Analytical Methods and Metabolome-Based Studies

Roca

Pérez‐Gálvez

2021

Antioxidants

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Chlorophylls and carotenoids are two families of antioxidants present in daily ingested foods, whose recognition as added-value ingredients runs in parallel with the increasing number of demonstrated functional properties. Both groups include a complex and vast number of compounds, and extraction and analysis methods evolved recently to a modern protocol. New methodologies are more potent, precise, and accurate, but their application requires a better understanding of the technical and biological context. Therefore, the present review compiles the basic knowledge and recent advances of the metabolomics of chlorophylls and carotenoids, including the interrelation with the primary metabolism. The study includes material preparation and extraction protocols, the instrumental techniques for the acquisition of spectroscopic and spectrometric properties, the workflows and software tools for data pre-processing and analysis, and the application of mass spectrometry to pigment metabolomics. In addition, the review encompasses a critical description of studies where metabolomics analyses of chlorophylls and carotenoids were developed as an approach to analyzing the effects of biotic and abiotic stressors on living organisms.

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1H NMR-based fingerprinting of eleven Mexican Capsicum annuum cultivars

Cited by 51 publications

References 41 publications

ZnO Semiconductor Nanoparticles and Their Application in Photocatalytic Degradation of Various Organic Dyes

ZnO Semiconductor Nanoparticles and Their Application in Photocatalytic Degradation of Various Organic Dyes

Applicability of high‐resolution NMR in combination with chemometrics for the compositional analysis and quality control of spices and plant‐derived condiments

Metabolomics of Chlorophylls and Carotenoids: Analytical Methods and Metabolome-Based Studies

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