Techniques for Extraction of Brewer’s Spent Grain Polyphenols: a Review

摘要: Million tons of brewer’s spent grain (BSG) are annually produced worldwide as brewing industry by-products. BSG represents a valuable source phenolic compounds, which have attracted much attention due to their diverse health benefits. Relevant strategies been developed for efficient extraction, in order commercially exploit these resources. This review focuses on the current extraction methods used obtain compounds from BSG, ranging more traditional advanced techniques. The commonly conventional solid–liquid extractions, employing organic solvents, alkaline, and enzymatic reactions. However, inherent difficulties screening obtaining led development Pressurized fluid supercritical microwave-assisted ultrasound-assisted extractions some novel techniques that recently explored. These mostly applied recovery barley malt, well other types cereals. In this review, it is shown may provide an innovative approach extract phenolics or related products, following in-depth discussion major strengths weaknesses identified each technique.