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<p>Microalgae are utilized intensively for various industrial applications including biofuels, nutraceuticals, agriculture, and livestock feed. Recently, applications of microalgae as functional foods and prebiotics have attracted interest from researchers and the industry. The primary aim of the present study was to evaluate the whole (WB) and lipid-extracted algal (LEA) biomass of a novel microalgal strain, <i>Marvania coccoides</i>, for potential use as a functional food additive and its ability to stimulate probiotic bacterial growth. WB contained 40.33% protein, 27.93% carbohydrate, and 15.46% lipid contents, whereas LEA contained 38.61% protein and 23.14% carbohydrate contents. The fatty acid and amino acid profiles of <i>M. coccoides</i> were found to be suitable for functional food applications. The WB and LEA extracts demonstrated potential antioxidant properties, with 70.72% and 49.19% radical scavenging activity (RSA), respectively, in the ABTS assay and 39.86% and 25.75% RSA, respectively, in the DPPH assay. WB and LEA have the potential to promote the growth of probiotic bacteria (<i>Lactobacillus acidophilus</i>) via symbiotic interactions in which the microalgal biomass acts as a prebiotic providing nutrients that stimulate probiotic growth. Media supplemented with WB and LEA showed higher bacterial counts (10.33 and 9.60 log CFU&#xa0;mL<sup>−1</sup>, respectively) as compared to control. The biochemical compounds in microalgal biomass could have growth-promoting effects on probiotic bacteria. The use of WB and LEA exemplifies a circular microalgae biorefinery approach, optimizing both economic and environmental benefits. The results of the present study suggest that both biomasses could be used as functional food ingredients with enhanced prebiotic and nutritional qualities.</p> Graphical abstract <p></p>

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Efficacy of whole and lipid-extracted biomass of microalgae for potential functional food and prebiotic applications

  • 期刊论文

  • 发表日期：

    2025年2月15日

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  • Sushant Gawali,
  • Siddant Ratanpal,
  • Akhil Nair,
  • Renitta Jobby,
  • A. W. Santhosh Kumar,
  • Abhishek Guldhe

摘要

Microalgae are utilized intensively for various industrial applications including biofuels, nutraceuticals, agriculture, and livestock feed. Recently, applications of microalgae as functional foods and prebiotics have attracted interest from researchers and the industry. The primary aim of the present study was to evaluate the whole (WB) and lipid-extracted algal (LEA) biomass of a novel microalgal strain, Marvania coccoides, for potential use as a functional food additive and its ability to stimulate probiotic bacterial growth. WB contained 40.33% protein, 27.93% carbohydrate, and 15.46% lipid contents, whereas LEA contained 38.61% protein and 23.14% carbohydrate contents. The fatty acid and amino acid profiles of M. coccoides were found to be suitable for functional food applications. The WB and LEA extracts demonstrated potential antioxidant properties, with 70.72% and 49.19% radical scavenging activity (RSA), respectively, in the ABTS assay and 39.86% and 25.75% RSA, respectively, in the DPPH assay. WB and LEA have the potential to promote the growth of probiotic bacteria (Lactobacillus acidophilus) via symbiotic interactions in which the microalgal biomass acts as a prebiotic providing nutrients that stimulate probiotic growth. Media supplemented with WB and LEA showed higher bacterial counts (10.33 and 9.60 log CFU mL−1, respectively) as compared to control. The biochemical compounds in microalgal biomass could have growth-promoting effects on probiotic bacteria. The use of WB and LEA exemplifies a circular microalgae biorefinery approach, optimizing both economic and environmental benefits. The results of the present study suggest that both biomasses could be used as functional food ingredients with enhanced prebiotic and nutritional qualities.

Graphical abstract