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[The reflection spectrometer and quantitative analysis design].

Ping Zhang1, Yong-Heng Chen, Yan Yao

  • 1Department of Environmental Science, Guangzhou University, Guangzhou 510006, China.

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|August 4, 2006
PubMed
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A novel reflection spectrometer quantifies reducing sugars using Fehling's reagent. This method offers a simple, sensitive, and reagent-efficient approach for analyzing sugars in wine and honey.

Area of Science:

  • Analytical Chemistry
  • Spectroscopy

Context:

  • Quantitative analysis of reducing sugars is crucial in food and beverage industries.
  • Traditional methods may require complex procedures or large reagent volumes.

Purpose:

  • To develop and validate a simple, sensitive reflection spectrometry method for determining reducing sugars.
  • To apply this method for the quantitative analysis of reducing sugars in real-world samples like wine and honey.

Summary:

  • A reflection spectrometer with optical fibre transmission was designed for quantitative analysis.
  • Reducing sugars were determined by measuring the reflectance of Cu2O precipitate formed from the reaction with Fehling's reagent in a micro-reaction cell.
  • A linear relationship was observed between reflectance and reducing sugar concentration (20-120 µg), demonstrating method efficacy.

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Impact:

  • The developed method is simple, highly sensitive, and conserves reagents.
  • Successful application to wine and honey samples highlights its practical utility in food analysis.