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Related Concept Videos

Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and the...

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Related Experiment Video

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Comprehensive Characterization of Tissue Mineralization in an Ex Vivo Model
07:29

Comprehensive Characterization of Tissue Mineralization in an Ex Vivo Model

Published on: September 27, 2024

Quality assessment for processed and sterilized bone using Raman spectroscopy.

Takeaki Yamamoto1, Kentaro Uchida, Kouji Naruse

  • 1Department of Orthopaedic Surgery, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan.

Cell and Tissue Banking
|September 9, 2011
PubMed
Summary
This summary is machine-generated.

Raman spectroscopy offers a rapid, non-destructive method for assessing allograft bone quality after sterilization. This technique can detect changes from heat treatment and gamma irradiation, unlike traditional methods.

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Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy
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Last Updated: May 29, 2026

Comprehensive Characterization of Tissue Mineralization in an Ex Vivo Model
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Published on: September 27, 2024

Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy
13:48

Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy

Published on: May 29, 2012

Area of Science:

  • Biomaterials Science
  • Orthopedic Surgery
  • Analytical Chemistry

Background:

  • Allograft bone processing and sterilization are crucial to prevent infection before transplantation.
  • Current quality assessment methods for allografts are often time-consuming and destructive.
  • There is a need for rapid, non-destructive techniques to evaluate allograft bone quality post-processing.

Purpose of the Study:

  • To investigate the utility of Raman spectroscopy for assessing the quality of allograft bone after common sterilization and preservation procedures.
  • To determine the effects of freeze-thawing, heat treatment, and gamma irradiation on rat femoral bone composition using Raman spectroscopy.

Main Methods:

  • Rat femoral bones were subjected to various sterilization and preservation treatments (freeze-thawing, heat treatment, gamma irradiation).
  • Raman spectroscopy was employed to analyze the mineral and matrix composition of the treated bone samples.
  • Changes in Raman spectra were analyzed to identify alterations in bone properties.

Main Results:

  • Freeze-thawing did not significantly alter the bone mineral or matrix composition.
  • Heat treatment and gamma irradiation resulted in detectable changes in the Raman spectra of the bone samples.
  • Raman spectroscopy successfully differentiated between untreated and treated bone samples.

Conclusions:

  • Raman spectroscopy is a promising non-destructive technique for the quality control of allograft bone.
  • This method can effectively identify alterations in bone composition caused by sterilization and preservation processes.
  • Raman spectroscopy may enhance the safety and reliability of allograft transplantation by ensuring bone quality.