3.7 Raman Spectroscopy

Marzi, Julia; Brauchle, Eva-Maria; Berrio, Daniel A. Carvajal; Layland, Shannon L.; Schenke‐Layland, Katja

doi:10.1016/b978-0-12-803581-8.09323-1

Cited by 2 publications

(2 citation statements)

References 236 publications

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“…Raman spectroscopy is based on the detection of molecular vibrations in a sample, induced by an incident light source. The interactions between the sample molecules and photos depend on the properties of the sample and the wavelength of the light (visible, infrared or UV) [58]. Raman spectroscopy is a non-invasive and non-destructive technique, its methodology is simple, and no sample pre-treatment is needed.…”

Section: Raman Spectroscopymentioning

confidence: 99%

State-of-the-Art of Analytical Techniques to Determine Food Fraud in Olive Oils

Pereira

Otero

Fraga-Corral

et al. 2021

Foods

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The benefits of the food industry compared to other sectors are much lower, which is why producers are tempted to commit fraud. Although it is a bad practice committed with a wide variety of foods, it is worth noting the case of olive oil because it is a product of great value and with a high percentage of fraud. It is for all these reasons that the authenticity of olive oil has become a major problem for producers, consumers, and legislators. To avoid such fraud, it is necessary to develop analytical techniques to detect them. In this review, we performed a complete analysis about the available instrumentation used in olive fraud which comprised spectroscopic and spectrometric methodology and analyte separation techniques such as liquid chromatography and gas chromatography. Additionally, other methodology including protein-based biomolecular techniques and analytical approaches like metabolomic, hhyperspectral imaging and chemometrics are discussed.

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Section: Raman Spectroscopymentioning

confidence: 99%

State-of-the-Art of Analytical Techniques to Determine Food Fraud in Olive Oils

Pereira

Otero

Fraga-Corral

et al. 2021

Foods

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“…Biomaterial should have resistance to corrosion, fatigue, wear, abrasion, and low surface hardness 1) . Several types of metal meet the requirements to be used as biomaterial, including SUS 316L, Ti CP Grade 1-4, and CoCr 2,3) .…”

Section: Introductionmentioning

confidence: 99%

HA/ZrO_2 Coating on CoCr Alloy Using Flame Thermal Spray

Juliano¹,

Gapsari²,

Izzuddin³

et al. 2022

Evergreen

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CoCr alloy is mostly used as biomaterial implant. However, it still has several weaknesses. Therefore, it is necessary to modify the surface to improve its biocompability. This research is a preliminary study on CoCr coated with Hydroxyapatite (HA)/Zirconium Dioxide (ZrO2) using Thermal Flame Spray method. 5 % -20 % ZrO2 was mixed with HA. Besides improving the biocompatibility, ZrO2 is believed to be able to enhance the antibacterial properties. Characterization test was performed using FE-SEM. The coating was analyzed for corrosion rate, surface roughness and antibacterial activity. Adding ZrO2 to HA has been proven to be able to improve corrosion rate. Combination of 80HA-20ZrO2 is the most effective bioceramic mixture, producing lowest corrosion rate of 0.213 mm/year in HBSS media. This is due to the increased reactivity value and better passivation reaction than CoCr without coating. Antibacterial activity test revealed that the coating could form inhibitory area around the sample meaning that the coating can provide bacterial resistance for the implant.

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3.7 Raman Spectroscopy

Cited by 2 publications

References 236 publications

State-of-the-Art of Analytical Techniques to Determine Food Fraud in Olive Oils

State-of-the-Art of Analytical Techniques to Determine Food Fraud in Olive Oils

HA/ZrO_2 Coating on CoCr Alloy Using Flame Thermal Spray

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