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McCarthy, AL;O'Callaghan, YC;Piggott, CO;FitzGerald, RJ;O'Brien, NM
2013
February
Brewers' spent grain; bioactivity of phenolic component, its role in animal nutrition and potential for incorporation in functional foods: a review
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1
WOS: 47 ()
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HYDROXYCINNAMIC ACID-DERIVATIVES MACROPHAGE INFLAMMATORY PROTEIN-2 DENSITY-LIPOPROTEIN OXIDATION LACTOBACILLUS-ACIDOPHILUS K1 FERULIC ACID CAFFEIC ACID IN-VITRO ANTIOXIDANT ACTIVITIES WHEAT BRAN ANTICANCER PROPERTIES
Brewers' spent grain (BSG) is a low-value co-product of the brewing industry produced in large quantities annually. This paper reviews the existing evidence regarding the phenolic component of BSG, focusing on composition, extraction and biofunctions such as antioxidant, anti-atherogenic, anti-inflammatory and anti-carcinogenic activities. Furthermore, the incorporation of BSG in foodstuffs will be discussed, including the use of BSG as an animal feed supplement and the potential of BSG to be incorporated into foods for human consumption. BSG contains hydroxycinnamic acids including ferulic acid, p-coumaric acid and caffeic acid; which have shown bioactivity in the pure form (antioxidant, anti-inflammatory, anti-atherogenic and anti-cancer). Phenolic extracts from BSG have also shown antioxidant potential, by protecting against oxidant-induced DNA damage, possibly by Fe chelation. Studies show that BSG has many benefits when used as a supplement in animal feed, such as increasing milk yield, milkfat content and in providing essential dietary amino acids. The incorporation of BSG in human foods such as cookies and ready-to-eat snacks has resulted in increased protein and fibre contents of the products, where the changes in organoleptic properties are controllable. It can be concluded that the phenolic component of BSG has potential bioactive effects, which are worth pursuing given that the inclusion of BSG into human foodstuffs is viable and beneficial.
CAMBRIDGE
CAMBRIDGE UNIV PRESS
0029-6651
117
125
10.1017/S0029665112002820
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