Application of spent grains to increase porosity in bricks

Ruß, Winfried; Mörtel, H.; Meyer-Pittroff, R.

doi:10.1016/j.conbuildmat.2004.05.014

Cited by 118 publications

(77 citation statements)

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“…Variations in its physicochemical composition may occur because of differences in barley variety, harvest time, malting and mashing conditions in the process. As previously pointed out (Table 1), protein content was similar to that reported by Kanauchi, Mitsuyama and Andaraki (2001) (24%) and Russ, Mortel and Meyer-Pittroff (2005) (19-23%). On the other hand, values reported by Meneses, Martins, Teixeira and Mussatto (2013) for phosphorous content (6000 mg kg-1) was slightly higher than the above; potassium was the exception since result was lower (600 mg kg -1 ).…”

Section: Discussionsupporting

confidence: 75%

Bioactive compounds from brewer’s spent grain: phenolic compounds, fatty acids and in vitro antioxidant capacity

et al. 2017

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ABSTRACT. Brewer's spent grain (BSG) was characterized by physicochemical, total phenolic compound and flavonoids contents. Antioxidant activity was evaluated by four different assays. The chromatographic analyses were used to quantify the phenolic compounds and the fatty acids in BSG. Ethanolic extracts were tested to evaluate antibacterial activity. The higher concentration of total phenolic compounds for BSG was obtained in the extraction with ethanol 20%. BSG showed an antioxidant potential for all tests evaluated. In the case of chromatographic analysis, phenolic acids and flavonoids, such as syringic acid and catechin, respectively, were detected in high quantities. Regarding to the fatty acids profile, polyunsaturated fatty acids, such as linoleic and oleic acids, were found in significant amounts. No antibacterial activity was reported for bacterial cultures and concentrations tested. BSG may be considered a protein source, rich in fiber, polyunsaturated fatty acids and bioactive compounds with antioxidant potential.Keywords: by-products, brewer's spent grain, flavonoids, antioxidant.Compostos bioativos do bagaço de malte: compostos fenólicos, ácidos graxos e capacidade antioxidante in vitro RESUMO. Bagaço de malte (BM) foi caracterizado pela avaliação do conteúdo total de compostos fenólicos e flavonóides e propriedades físico-químicas. A atividade antioxidante foi avaliada por quatro diferentes ensaios. Análises cromatográficas foram utilizadas para quantificar os compostos fenólicos e os ácidos graxos do BM. O extrato etanólico foi testado para avaliar a atividade antibacteriana. A concentração mais elevada de compostos fenólicos totais para o BM foi obtida na extração com etanol a 20%. O BM mostrou um potencial antioxidante para todos os testes avaliados. Na análise cromatografia líquida, ácidos fenólicos e flavonóides, tais como o ácido siringico e catequina, respectivamente, foram detectados em quantidades elevadas. Em relação ao perfil de ácidos graxos, ácidos graxos poli-insaturados, como ácidos oleico e linoleico, foram encontradas em quantidades significativas. Nenhuma atividade antibacteriana foi observada para culturas de bactérias e concentrações testadas. BM pode ser considerado como uma fonte de proteína, rico em fibra, ácidos graxos poli-insaturados e compostos bioativos com potencial antioxidante.Palavras-chave: sub-produto, bagaço de malte, flavonoides, antioxidante.

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Section: Discussionsupporting

confidence: 75%

Bioactive compounds from brewer’s spent grain: phenolic compounds, fatty acids and in vitro antioxidant capacity

et al. 2017

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“…Raw BSG has calorific value of ∼20 MJ/kg (Russ et al, 2005), while its processing into charcoal bricks increases the calorific value to 27 MJ/kg. This is similar to (or even higher than) the calorific value of charcoals produced from other raw materials (Okamoto et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Processing, mechanical and thermal behavior assessments of polycaprolactone/agricultural wastes biocomposites

Hejna

Formela

Saeb

2015

Industrial Crops and Products

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“…Beyond the primary porosity of fi red clay material, caused by the decomposition of carbonates, contraction of clay minerals and organic matter combustion, the introduction of pore-forming additives contributes to the increase of porosity of bricks. Diff erent inorganic (calcite, dolomite [4]) and organic (wastes from diff erent industrial activities [5], [6], [7]) types of additives were tested for suitability in brick production. In published papers, the attention of brick producers is directed towards the ceramic properties of materials with additives, such as compressive and bending strengths, capillary water up-take and capacity of heat conductivity, which are the main properties that characterize building materials [8], [9].…”

Section: Introductionmentioning

confidence: 99%

Remnants of organic pore-forming additives in conventional clay brickmaterials: Optical Microscopy and Scanning Electron Microscopy study

Kristály¹,

Gömze²

2008

Epitoanyag - JSBCM

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Szerves pórusképző adalékanyagok maradványai a hagyományos agyagtégla anyagban: Optikai-és pásztázó elektronmikroszkópos vizsgálatok Agyagtégla-gyártási vizsgálati anyagmintákat kísérleti égetésnek vetettünk alá a szerves pórusképző adalékanyagok viselkedésének tanulmányozása céljából. Fűrészport, napraforgómag-héjat és rizskorpát adagoltunk a nyers agyaghoz, és azt 900°C-on kiégettük. A nyers-és az égetett anyagok ásványi összetételét RTG por-diffrakciós (XRPD) eljárással határoztuk meg. A nyersa nyagok termikus viselkedését derivatográffal (DTA) vizsgáltuk. Optikai mikroszkóppal (OM) és pásztázó elektronmikroszkóppal (SEM) tanulmányoztuk a kiégetett anyagok mikroszerkezetét. Az OM és a SEM kimutatta a növényi eredetű anyagok mikroszerkezetét megőrző maradványok jelenlétét. A jelen tanulmány fő célja a szerves adalékanyagok maradványainak morfológiai jellemzése, és azok kialakulási folyamatainak a felderítése.

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Application of spent grains to increase porosity in bricks

Cited by 118 publications

References 0 publications

<b>Bioactive compounds from brewer’s spent grain: phenolic compounds, fatty acids and <i>in vitro</i> antioxidant capacity

<b>Bioactive compounds from brewer’s spent grain: phenolic compounds, fatty acids and <i>in vitro</i> antioxidant capacity

Processing, mechanical and thermal behavior assessments of polycaprolactone/agricultural wastes biocomposites

Remnants of organic pore-forming additives in conventional clay brickmaterials: Optical Microscopy and Scanning Electron Microscopy study

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