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Methods for Facilitating Microbial Growth on Pulp Mill Waste Streams and Characterization of the Biodegradation Potential of Cultured Microbes

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Current extraction techniques towards bioactive compounds from brewer's spent grain - A review.

T Bonifácio-Lopes^1,2, José A Teixeira¹, Manuela Pintado¹

¹CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal.

Critical Reviews in Food Science and Nutrition

|August 22, 2019

Summary

Brewer's spent grain (BSG), a brewing by-product rich in bioactive compounds, offers potential for food applications beyond animal feed. This review explores extraction methods and highlights the need for new techniques and uses for BSG.

Keywords:

Bioactive compounds brewer’s spent grain chemical composition extraction techniques

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Untargeted Liquid Chromatography-Mass Spectrometry-Based Metabolomics Analysis of Wheat Grain

Untargeted Liquid Chromatography-Mass Spectrometry-Based Metabolomics Analysis of Wheat Grain

Published on: March 13, 2020

Area of Science:

Food Science
Biotechnology
Chemical Engineering

Background:

Brewer's spent grain (BSG) is a major brewing industry by-product.
BSG is abundant in valuable bioactive compounds like phenolic acids, dietary fiber, and proteins.
Currently, BSG is primarily used as animal feed, but its nutritional profile suggests broader food applications.

Purpose of the Study:

To review the composition and applications of BSG.
To analyze the advantages and limitations of various BSG extraction methods.
To identify the need for novel extraction techniques and applications for BSG.

Main Methods:

Literature review of BSG composition, applications, and extraction techniques.
Analysis of established extraction methods including supercritical CO2, autohydrolysis, alkaline hydrolysis, solvent extraction, ultrasound-assisted extraction, dilute acid hydrolysis, enzymatic hydrolysis, and microwave-assisted extraction.
Evaluation of current research on BSG bioactive compound extraction.

Main Results:

BSG is a rich source of bioactive compounds with potential for valorization.
Multiple extraction methods exist, each with specific advantages and drawbacks.
Optimizing extraction yields and exploring new applications are crucial for BSG utilization.

Conclusions:

Re-utilizing agro-industrial by-products like BSG can create added-value products.
Effective extraction of bioactive compounds from BSG requires further research into advanced techniques.
Developing innovative applications for BSG is essential for sustainable resource management.