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Coffee residues as substrates for aroma production by Ceratocystis fimbriata in solid state fermentation BJM
Medeiros,Adriane Bianchi Pedroni; Christen,Pierre; Roussos,Sevastianos; Gern,Juliana Carine; Soccol,Carlos Ricardo.
The ability of two different strains of Ceratocystis fimbriata for fruity aroma production by solid state fermentation (SSF) was tested on coffee pulp and coffee husk complemented with glucose as substrates. Experiments were carried out in 250 mL Erlenmeyer flasks and the experimental conditions were: 70% of initial moisture, 20% of glucose addition and pH 6.0. Aeration was made by passive diffusion through the gauze covering the flasks. Headspace analysis of the culture by gas chromatography (GC) showed that 12 compounds were produced with coffee husk. Maximum total volatiles (TV) concentration was reached after 72 h of culture with coffee husk as substrate (28 µmol.L-1.g-1). Ethyl acetate, ethanol and acetaldehyde were the major compounds produced,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ceratocystis fimbriata; Coffee residues; Solid state fermentation; Aroma.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000300013
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Use of coffee (Coffea arabica) pulp for the production of briquettes and pellets for heat generation Ciência e Agrotecnologia
Cubero-Abarca,Robert; Moya,Roger; Valaret,Jorre; Tomazello Filho,Mario.
Coffee bean (Coffea arabica) processing generates high amount of residues that are sources of environmental pollution. Therefore, an appropriate solution is needed. The objective of this study was to determine the potential of coffee pulp to produce briquettes and pellets. The study included pulp drying (using air, solar and hot air methods); the production of briquettes and pellets; the evaluation of their energy, physical and mechanical properties; and the evaluation of pellet quality using X-ray densitometry. The results showed that the pulp presented an initial moisture content of 90%, resulting in drying times of 699, 308 and 55 hours for air, solar and hot air drying, respectively, and the calorific values of the pellets and briquettes were 12,501 kJ...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffee residues; Drying; Coffee processing; Biomass; Bio-resources.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000500005
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