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Response Surface Methodology

Response Surface Methodology

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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Optimization Ultrasound-Assisted Deep Eutectic Solvent Extraction of Anthocyanins from Raspberry Using Response

Hongkun Xue¹, Jiaqi Tan², Qian Li¹

¹Key Laboratory of Particle & Radiation Imaging, Ministry of Education, Department of Engineering Physics, Tsinghua University, No. 30 Shuangqing Road, Haidian District, Beijing 100084, China.

Foods (Basel, Switzerland)

|October 6, 2020

Summary

This study introduces ultrasound-assisted deep eutectic solvent extraction (UADESE) for efficient raspberry anthocyanin extraction. Optimized UADESE achieved high yields of purified cyanidin-3-glucoside and cyanidin-3-rutinoside.

Keywords:

anthocyanins anthocyanins structure optimization raspberry ultrasound-assisted deep eutectic solvent extraction

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Area of Science:

Natural Product Chemistry
Food Science
Analytical Chemistry

Background:

Raspberries are rich in anthocyanins, valuable bioactive compounds.
Efficient extraction methods are crucial for isolating these compounds from natural sources.

Purpose of the Study:

To develop and optimize a novel ultrasound-assisted deep eutectic solvent extraction (UADESE) method for raspberry anthocyanins.
To isolate and purify anthocyanins using macroporous resin and high-speed counter current chromatography (HSCCC).
To identify and quantify the purified anthocyanin compounds.

Main Methods:

Ultrasound-assisted deep eutectic solvent extraction (UADESE) optimized by response surface methodology and genetic algorithm.
Isolation and purification using AB-8 macroporous resin and high-speed counter current chromatography (HSCCC).
Structural identification via UV-Vis, HPLC, HPLC-ESI-MS/MS, 1H NMR, and 13C NMR.

Main Results:

Optimal UADESE parameters: 29% water content, 210 W ultrasonic power, 51 °C, 32 min, yielding 1.378 ± 0.009 mg/g anthocyanins.
Purified cyanidin-3-glucoside (92.25% purity) and cyanidin-3-rutinoside (93.07% purity) were successfully isolated.
Identified anthocyanins confirmed to be present in raspberries.

Conclusions:

UADESE offers an effective and feasible method for raspberry anthocyanin extraction.
The combined UADESE, resin, and HSCCC approach enables efficient isolation and purification.
This study provides a valuable protocol for obtaining anthocyanins from natural plant resources.