Volume 46, Issue 12 e17240
ORIGINAL ARTICLE

Low methoxy feruloylated pectin from beetroot: Antioxidant and prebiotic properties

Swapna RamachandraRao Sonale

Swapna RamachandraRao Sonale

Department of Microbiology and Fermentation Technology, CSIR - Central Food Technological Research Institute, Mysuru, India

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Saarika Pothuvan Kunnummal

Saarika Pothuvan Kunnummal

Department of Microbiology and Fermentation Technology, CSIR - Central Food Technological Research Institute, Mysuru, India

Academy of Scientific and Innovative Research, CSIR, Ghaziabad, India

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Nidhi Sori

Nidhi Sori

Department of Microbiology and Fermentation Technology, CSIR - Central Food Technological Research Institute, Mysuru, India

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Jeevan Prasad Reddy

Jeevan Prasad Reddy

Academy of Scientific and Innovative Research, CSIR, Ghaziabad, India

Department of Food Packaging Technology, CSIR - Central Food Technological Research Institute, Mysuru, India

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Mahejibin Khan

Corresponding Author

Mahejibin Khan

Department of Microbiology and Fermentation Technology, CSIR - Central Food Technological Research Institute, Mysuru, India

Academy of Scientific and Innovative Research, CSIR, Ghaziabad, India

Correspondence

Mahejibin Khan, Department of Microbiology and Fermentation Technology, CSIR - Central Food Technological Research Institute, Mysuru, Karnataka 570020, India.

Email: [email protected]

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First published: 30 September 2022
Citations: 2

Abstract

Pectin was extracted from beetroot pulp by acid hydrolysis using two concentrations of acid, 0.05 M and 0.1 M HCl and designated BRP1 and BRP2, respectively. CHNS, FTIR, and DSC analyses confirmed the purity and characterized it as a low methoxyl (LM) pectin. DPPH (%) inhibition was 22 and 11 for BRP1 and BRP2 and antioxidant activity determined by FRAP assay was 51 μM TE/g and 15 μM TE/g for BRP1 and BRP2, respectively. BR pectin significantly (p ≤ .05) stimulated the growth of Limosilactobacillus fermentum compared with citrus pectin. The highest prebiotic activity score (0.75) was observed for BRP1, followed by BRP2 (0.66), BR pulp (0.26), and citrus pectin (0.09). In addition, L. fermentum produced a higher amount of SCFA with BRP1 and BRP2 compared to the control. These results confirmed the bioactive and health-promoting potential of BR pectin and hence can be used as an effective bioactive ingredient for various functional foods.

Novelty impact statement

  • Extraction of low methoxy pectin was investigated using two different concentrations of acid.
  • Structural and functional properties of pectin were influenced by acid extraction conditions.
  • Both pectins contain feruloylated sugars that contribute to their antioxidant properties
  • L. fermentum produced the highest amount of acetate with BRP1, whereas the highest amount of propionic acid and butyric acid was produced with BRP2.

CONFLICT OF INTEREST

The authors have declared no conflicts of interest for this article.

DATA AVAILABILITY STATEMENT

Bacterial 16S rDNA sequence is submitted at NCBI under accession no. OK217198. FTIR and other raw data are available with the author and made available upon reasonable request.

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