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Response Surface Methodology01:16

Response Surface Methodology

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Response Surface Methodology (RSM) is a collection of statistical and mathematical techniques used to develop, improve, and optimize processes. It is particularly valuable when many input variables or factors potentially influence a response variable.
The process of RSM involves several key steps:
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Sustainable Carotenoid Extraction from Macroalgae: Optimizing Microwave-Assisted Extraction Using Response Surface

Andreia Lopes1,2, Luísa Correia-Sá1, Mónica Vieira2,3

  • 1REQUIMTE/LAQV, ISEP, Polytechnic of Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal.

Life (Basel, Switzerland)
|January 8, 2025
PubMed
Summary

Optimized microwave-assisted extraction (MAE) efficiently recovers carotenoids from seaweeds. This sustainable method yields valuable compounds like beta-carotene and fucoxanthin for health applications.

Keywords:
Box–Behnken designcarotenoidshigh-performance liquid chromatographymicrowave-assisted extractionseaweeds

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Area of Science:

  • Marine Botany
  • Natural Product Chemistry
  • Food Science

Background:

  • Carotenoids are vital bioactive compounds with significant health benefits.
  • Macroalgae, particularly Himanthalia elongata, are rich sources of these compounds.
  • Efficient and sustainable extraction methods are crucial for industrial applications.

Purpose of the Study:

  • To optimize carotenoid extraction from Himanthalia elongata using microwave-assisted extraction (MAE).
  • To develop and validate an HPLC-DAD method for carotenoid characterization.
  • To assess the efficacy of the optimized MAE method on other seaweed species.

Main Methods:

  • Initial optimization using traditional solvent extraction methods.
  • Application of a Box-Behnken design for microwave-assisted extraction (MAE) optimization (solid-to-solvent ratio, temperature, time).
  • High-Performance Liquid Chromatography with Diode-Array Detection (HPLC-DAD) for carotenoid analysis.

Main Results:

  • Optimal MAE conditions determined: 1:13.6 g/mL solid-to-solvent ratio, 60 °C, 15 min.
  • Predicted carotenoid content: 2.94 µg/mL; experimental: 2.12 µg/mL.
  • Fucus vesiculosus showed the highest carotenoid yield among tested seaweeds; β-carotene and fucoxanthin identified as major compounds.

Conclusions:

  • Optimized MAE is an effective and sustainable method for extracting carotenoids from seaweeds.
  • The method yields significant amounts of valuable bioactive compounds like β-carotene and fucoxanthin.
  • Extracted carotenoids hold promise for applications in human health and nutrition.