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Related Concept Videos

Infrared (IR) Spectroscopy: Overview01:09

Infrared (IR) Spectroscopy: Overview

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When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
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IR Spectrometers01:25

IR Spectrometers

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There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
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Applications of IR Spectroscopy: Overview01:11

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The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
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IR Spectrum01:19

IR Spectrum

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When infrared (IR) radiation passes through a molecule, the bonds stretch or bend by absorbing the radiation. This absorption creates the molecule's absorption spectrum, which is the plot of its percentage transmittance versus wavenumber.
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IR Spectroscopy: Molecular Vibration Overview01:24

IR Spectroscopy: Molecular Vibration Overview

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When Infrared (IR) radiation passes through a covalently bonded molecule, the bonds transition from lower to higher vibrational levels. The fundamental vibrational motions that result in infrared absorption can be classified as stretching or bending vibrations.
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Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
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Characterization of Biological Absorption Spectra Spanning the Visible to the Short-Wave Infrared
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[Hadamard Transform NIR Spectrometer for the Biological Processes].

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    This summary is machine-generated.

    A new Near Infrared (NIR) spectrometer using Hadamard Transform (HT) technique enables real-time monitoring of nutrients like glycerol, methanol, and glucose in yeast cultures. This advanced system optimizes microbial growth conditions for maximum product yield.

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    Area of Science:

    • Biotechnology
    • Analytical Chemistry
    • Spectroscopy

    Background:

    • Effective monitoring of microbial nutrient consumption is crucial for optimizing bioprocesses.
    • Maintaining ideal growth conditions maximizes the yield of desired products in microbial cultures.

    Purpose of the Study:

    • To develop a novel Near Infrared (NIR) spectrometer for real-time monitoring of glycerol, methanol, and glucose in yeast culture media.
    • To ensure optimal microbial growth conditions for enhanced product yield.

    Main Methods:

    • Utilized Hadamard Transform (HT) technique for spectrometer design.
    • Incorporated a custom-designed Near IR probe for spectral signal collection.
    • Employed Digital Micro-mirror Devices (DMD) for Hadamard template coding and modulation.
    • Developed specialized software for spectral acquisition and processing, enabling real-time monitoring.

    Main Results:

    • The developed NIR spectrometer achieved a stray light value of 0.875%.
    • The system demonstrated a volatility of ±4.28%.
    • Experimental tests confirmed high precision, meeting the requirements for biological process monitoring.

    Conclusions:

    • The novel HT-based NIR spectrometer provides a precise and reliable method for real-time nutrient monitoring in bioprocesses.
    • This technology facilitates the optimization of microbial growth environments, leading to improved product yields.