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Related Concept Videos

Sample Preparation for Analysis: Overview01:21

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Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
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Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
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Cassava-based materials for matrix solid phase dispersion: An alternative for sample preparation in food analysis.

Rodrigo Barcellos Hoff1, Luana de Souza Futigami2, Milena Dutra Pierezan2

  • 1Ministério da Agricultura, Pecuária e Abastecimento (MAPA), Laboratório Federal de Defesa Agropecuária, Seção Laboratorial Avançada em Santa Catarina (SLAV/SC/LFDA/RS), São José, SC 88102-600, Brazil.

Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
|May 22, 2022
PubMed
Summary

Cassava-based ingredients like starch are effective and affordable alternatives for matrix solid phase dispersion (MSPD) in food sample preparation. These natural materials offer greener options for analyzing contaminants in various food products.

Keywords:
Lipid removalMatrix effectsNature-based materialsPAHsPressurized liquid extractionSorbic acidVeterinary drugs

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Area of Science:

  • Food Chemistry
  • Analytical Chemistry
  • Materials Science

Background:

  • Matrix solid phase dispersion (MSPD) is a crucial sample preparation technique.
  • Conventional MSPD materials can be expensive and environmentally impactful.
  • There is a need for sustainable and cost-effective alternatives.

Purpose of the Study:

  • To evaluate cassava-based ingredients as novel materials for MSPD.
  • To compare their performance against traditional and commercial solid phases.
  • To assess their suitability for analyzing various analytes in diverse food matrices.

Main Methods:

  • Cassava starch, tapioca, and tapioca pearls were tested as MSPD materials.
  • Sample preparation was performed on mussels, fish, ham, sausages, and animal feed.
  • Analytes included pharmaceuticals, preservatives, and polycyclic aromatic hydrocarbons.
  • Analyses were conducted using liquid chromatography-tandem mass spectrometry and capillary electrophoresis.
  • Performance was evaluated based on fat removal, accuracy, interferents, and signal response.

Main Results:

  • Cassava starch demonstrated excellent performance across most assays.
  • Cellulose provided superior results for nitrite and nitrate analysis.
  • Cassava-based materials showed adequate matrix dispersion, confirmed by electron microscopy.
  • These materials offer a cheaper, greener, and abundant alternative to current MSPD phases.

Conclusions:

  • Cassava-based solid phases are suitable and effective for MSPD.
  • They present a sustainable and economical option for food sample preparation.
  • This research supports the use of agricultural byproducts in analytical chemistry.