Effects of different microwave intensity on the extraction yield and physicochemical properties of pectin from dragon fruit (Hylocereus polyrhizus) peels

Shahrooz Rahmati, Aminah Abdullah, Oon Lee Kang

Research output: Contribution to journalArticle

Abstract

In this experiment, microwave-assisted extraction (MAE) was applied at different intensity of 300, 450, 600, and 800 W to extract pectin from dragon fruit peels. The microwave-assisted extraction was optimized using a central composite experimental design. The optimal extraction condition was established to be pH 2.07, extraction time of 65 s, and solid-to-liquid ratio of 66.57. The maxima extraction yields at 300, 450, 600, and 800 W were 11.8, 14.9, 17.2 and 18.5%, respectively. Experimental and predicted extraction yields obtained at the different microwave power levels were fitted to second-order response surface model. Microwave-assisted extraction process is effective in obtaining high-quality dragon fruit peel pectin, i.e. GalA content: 59.73–69.68%, DE value: 45.82–46.95%, crystallinity: 15.32–21.22%.

Original languageEnglish
Article number100186
JournalBioactive Carbohydrates and Dietary Fibre
Volume18
DOIs
Publication statusPublished - 1 Apr 2019

Fingerprint

Hylocereus polyrhizus
Hylocereus
Microwaves
Fruits
pectins
Fruit
physicochemical properties
fruit peels
Research Design
pectin
Design of experiments
experimental design
liquids
extracts
Composite materials
Liquids

Keywords

  • Dragon fruit
  • Microwave-assisted extraction
  • Pectin
  • Response surface methodology

ASJC Scopus subject areas

  • Food Science
  • Biochemistry
  • Organic Chemistry

Cite this

@article{c88394be8dbd4ce8a40e6c8d121f7bd9,
title = "Effects of different microwave intensity on the extraction yield and physicochemical properties of pectin from dragon fruit (Hylocereus polyrhizus) peels",
abstract = "In this experiment, microwave-assisted extraction (MAE) was applied at different intensity of 300, 450, 600, and 800 W to extract pectin from dragon fruit peels. The microwave-assisted extraction was optimized using a central composite experimental design. The optimal extraction condition was established to be pH 2.07, extraction time of 65 s, and solid-to-liquid ratio of 66.57. The maxima extraction yields at 300, 450, 600, and 800 W were 11.8, 14.9, 17.2 and 18.5{\%}, respectively. Experimental and predicted extraction yields obtained at the different microwave power levels were fitted to second-order response surface model. Microwave-assisted extraction process is effective in obtaining high-quality dragon fruit peel pectin, i.e. GalA content: 59.73–69.68{\%}, DE value: 45.82–46.95{\%}, crystallinity: 15.32–21.22{\%}.",
keywords = "Dragon fruit, Microwave-assisted extraction, Pectin, Response surface methodology",
author = "Shahrooz Rahmati and Aminah Abdullah and Kang, {Oon Lee}",
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AU - Rahmati, Shahrooz

AU - Abdullah, Aminah

AU - Kang, Oon Lee

PY - 2019/4/1

Y1 - 2019/4/1

N2 - In this experiment, microwave-assisted extraction (MAE) was applied at different intensity of 300, 450, 600, and 800 W to extract pectin from dragon fruit peels. The microwave-assisted extraction was optimized using a central composite experimental design. The optimal extraction condition was established to be pH 2.07, extraction time of 65 s, and solid-to-liquid ratio of 66.57. The maxima extraction yields at 300, 450, 600, and 800 W were 11.8, 14.9, 17.2 and 18.5%, respectively. Experimental and predicted extraction yields obtained at the different microwave power levels were fitted to second-order response surface model. Microwave-assisted extraction process is effective in obtaining high-quality dragon fruit peel pectin, i.e. GalA content: 59.73–69.68%, DE value: 45.82–46.95%, crystallinity: 15.32–21.22%.

AB - In this experiment, microwave-assisted extraction (MAE) was applied at different intensity of 300, 450, 600, and 800 W to extract pectin from dragon fruit peels. The microwave-assisted extraction was optimized using a central composite experimental design. The optimal extraction condition was established to be pH 2.07, extraction time of 65 s, and solid-to-liquid ratio of 66.57. The maxima extraction yields at 300, 450, 600, and 800 W were 11.8, 14.9, 17.2 and 18.5%, respectively. Experimental and predicted extraction yields obtained at the different microwave power levels were fitted to second-order response surface model. Microwave-assisted extraction process is effective in obtaining high-quality dragon fruit peel pectin, i.e. GalA content: 59.73–69.68%, DE value: 45.82–46.95%, crystallinity: 15.32–21.22%.

KW - Dragon fruit

KW - Microwave-assisted extraction

KW - Pectin

KW - Response surface methodology

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