Raman spectroscopic techniques for nondestructive analysis of agri-foods: A state-of-the-art review

Wang, Kaiqiang; Li, Zonglun; Li, Jinjie; Lin, Hong

doi:10.1016/j.tifs.2021.10.010

Cited by 64 publications

(29 citation statements)

References 124 publications

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Section: Discussionmentioning

confidence: 99%

“…Food products are complex mixtures of heterogeneous nature; obtaining chemical and spatial information from them is crucial for food safety and quality control [ 47 ]. For this, food detection technologies play a fundamental role [ 25 ]; therefore, it is urgent to develop rapid methods of nondestructive analysis to control the quality and safety of food and thus control its circulation in the market [ 47 ]. Chemical Raman imaging (CRI), in combination with chemometrics, can provide spectral information and spatial distributions of specific chemicals, analyzing them non-destructively [ 42 , 47 , 48 , 49 , 50 ].…”

Section: Discussionmentioning

confidence: 99%

“…For this, food detection technologies play a fundamental role [ 25 ]; therefore, it is urgent to develop rapid methods of nondestructive analysis to control the quality and safety of food and thus control its circulation in the market [ 47 ]. Chemical Raman imaging (CRI), in combination with chemometrics, can provide spectral information and spatial distributions of specific chemicals, analyzing them non-destructively [ 42 , 47 , 48 , 49 , 50 ]. However, in the food field, only a few investigations on the application of CRI have been reported [ 50 ].…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of the Miscibility of Novel Cocoa Butter Equivalents by Raman Mapping and Multivariate Curve Resolution–Alternating Least Squares

Castro–Alayo

Torrejón-Valqui

Cayo-Colca

et al. 2021

Foods

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Cocoa butter (CB) is an ingredient traditionally used in the manufacturing of chocolates, but its availability is decreasing due to its scarcity and high cost. For this reason, other vegetable oils, known as cocoa butter equivalents (CBE), are used to replace CB partially or wholly. In the present work, two Peruvian vegetable oils, coconut oil (CNO) and sacha inchi oil (SIO), are proposed as novel CBEs. Confocal Raman microscopy (CRM) was used for the chemical differentiation and polymorphism of these oils with CB based on their Raman spectra. To analyze their miscibility, two types of blends were prepared: CB with CNO, and CB with SIO. Both were prepared at 5 different concentrations (5%, 15%, 25%, 35%, and 45%). Raman mapping was used to obtain the chemical maps of the blends and analyze their miscibility through distribution maps, histograms and relative standard deviation (RSD). These values were obtained with multivariate curve resolution–alternating least squares. The results show that both vegetable oils are miscible with CB at high concentrations: 45% for CNO and 35% for SIO. At low concentrations, their miscibility decreases. This shows that it is possible to consider these vegetable oils as novel CBEs in the manufacturing of chocolates.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of the Miscibility of Novel Cocoa Butter Equivalents by Raman Mapping and Multivariate Curve Resolution–Alternating Least Squares

Castro–Alayo

Torrejón-Valqui

Cayo-Colca

et al. 2021

Foods

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“…The recent dramatic advancement of nanomaterials is the motivation for the broad utilization of SERS technology, reaching a single‐molecule level in the detection of analytes. Due to its superior sensitivity and detectability, SERS possesses a wide range of novel applications in biochemistry (Butler et al., 2016), medical diagnostics (Ember et al., 2017), materials science (Ding et al., 2016), and food science (Hussain et al., 2020), contributing to new insights into the detection of residual drugs and pesticides, adulteration, heavy metal compounds, or lipid oxidation products in food (Wang et al., 2021). This study is dedicated to the applications of RS or SERS in fish quality and safety, which provides a better understanding of its analytical versatility.…”

Section: Principles and Instrumentation Of Rsmentioning

confidence: 99%

“…With the recent powerful technical advances of nanomaterials and emerging versatile SERS substrates, SERS has provided a viable platform for rapid, nondestructive, and sensitive identification of hazardous contaminants in food. Recent reviews exhibit that RS and SERS have offered the promising possibility in foodstuffs safety inspection (Craig et al., 2013; Jiang et al., 2021; Petersen et al., 2021; Wang et al., 2021), antibiotic residues evaluation (Girmatsion et al., 2021), bacterial recognition (Ahmad et al., 2021), meat quality determination (Beganovic et al., 2019), water pollution measurement (Z. Li et al., 2015), microorganism detection (Wang et al., 2018), and nondestructive analysis of agri‐foods (Wang et al., 2021). These reviews are mainly concentrated on applying RS or SERS to food quality and safety extensively.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in the application of Raman spectroscopy for fish quality and safety analysis

et al. 2022

Comp Rev Food Sci Food Safe

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Fish is one of the highly demanded aquatic products, and its quality and safety play a pivotal role in daily diet. However, the possible hazardous substance in perishable fish both in pre-and postharvest periods may decrease their values and pose a threat to public health. Laborious and expensive traditional methods drive the need of developing effective tools for detecting fish quality and safety properties in a rapid, nondestructive, and effective manner. Recent advances in Raman spectroscopy (RS) and surface-enhanced Raman scattering (SERS) have shown enormous potential in various aspects, which largely boost their applications in fish quality and safety evaluation. They have incomparable merits such as providing molecule fingerprint information and allowing for rapid, sensitive, and noninvasive detection with simple sample preparation. This review provides a comprehensive overview focusing on the applications of RS and SERS for fish quality assessment and safety inspection, highlighting the hazardous substance and illegal behavior both in preharvest (veterinary drug residues and environmental pollutants) and postharvest (freshness and illegal behavior) particularly. Moreover, challenges and prospects are also proposed to facilitate the vigorous development of RS and SERS. This review is aimed to emphasize potential opportunities for applying RS and SERS as promising techniques for routine food quality and safety detection.

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A Raman spectral marker for the iso‐octyl chain structure of cholesterol

Simeral,

Demers,

Sheth

et al. 2023

Analytical Science Advances

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Raman spectroscopy provides label‐free, specific analysis of biomolecular structure and interactions. It could have a greater impact with improved characterization of complex fingerprint vibrations. Many Raman peaks have been assigned to cholesterol, for example, but the molecular vibrations associated with those peaks are not known. In this report, time‐dependent density functional theory calculations of the Raman spectrum of cholesterol are compared to measurements on microcrystalline powder to identify 23 peaks in the Raman spectrum. Among them, a band of six peaks is found to be sensitive to the conformational structure of cholesterol's iso‐octyl chain. Calculations on 10 conformers in this spectral band are fit to experimental spectra to probe the cholesterol chain structure in purified powder and in phospholipid vesicles. In vesicles, the chain is found to bend perpendicular to the steroid rings, supporting the case that the chain is a dynamic structure that contributes to lipid condensation and other effects of cholesterol in biomembranes.Statement of Significance: Here we use density functional theory to identify a band of six peaks in cholesterol's Raman spectrum that is sensitive to the conformational structure of cholesterol's chain. Raman spectra were analyzed to show that in fluid‐phase lipid membranes, about half of the cholesterol chains point perpendicular to the steroid rings. This new method of label‐free structural analysis could make significant contributions to our understanding of cholesterol's critical role in biomembrane structure and function. More broadly, the results show that computational quantum chemistry Raman spectroscopy can make significant new contributions to molecular structure when spectra are interpreted with computational quantum chemistry.

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Raman spectroscopic techniques for nondestructive analysis of agri-foods: A state-of-the-art review

Cited by 64 publications

References 124 publications

Evaluation of the Miscibility of Novel Cocoa Butter Equivalents by Raman Mapping and Multivariate Curve Resolution–Alternating Least Squares

Evaluation of the Miscibility of Novel Cocoa Butter Equivalents by Raman Mapping and Multivariate Curve Resolution–Alternating Least Squares

Recent advances in the application of Raman spectroscopy for fish quality and safety analysis

A Raman spectral marker for the iso‐octyl chain structure of cholesterol

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