Results 221 to 230 of about 3,288 (250)

Valorization of spent coffee grounds: A review

Food and Bioproducts Processing, 2018
Abstract Spent coffee grounds (SCGs) arise as waste products through the production of instant coffee and coffee brewing. This work reviews the composition of SCGs, the methods used for the isolation of individual compounds present in SCGs, the ways of utilizing SCGs presented in the literature so far, including use of SCGs’ bioactive compounds ...
Kovalcik, Adriana, Obruca, Stanislav, Marova, Ivana   +2 more
openaire   +1 more source

Spent coffee grounds: A potential commercial source of phytosterols

Food Chemistry, 2020
This study sought to determine the content of phytosterols (PS) in spent coffee grounds (SCG) to assess a novel industrial application of this coffee by-product as a commercial source of PS. Four PS were extracted and analyzed from 14 SCG samples from 12 countries.
Franks kamgang Nzekoue, Gulzhan Khamitova, Simone Angeloni, Alba Nácher Sempere, Jing Tao, Filippo Maggi, Jianbo Xiao, Gianni Sagratini, Sauro Vittori, Giovanni Caprioli   +9 more
openaire   +3 more sources

Estrogen Receptor-Mediated Transcriptional Activities of Spent Coffee Grounds and Spent Coffee Grounds Compost, and Their Phenolic Acid Constituents

Journal of Agricultural and Food Chemistry, 2019
Spent coffee grounds (SCG) are the most abundant coffee byproduct and are generally discarded as waste. The horticultural use of SCG and SCG compost (SCGC) has become popular due to a growing interest in environmentally friendly measures for waste disposal.
Byoung Ha An, Hyesoo Jeong, Jin-Hee Kim, Sujeong Park, Jin-Hyun Jeong, Min Jung Kim, Minsun Chang   +6 more
openaire   +2 more sources

Biotechnological conversion of spent coffee grounds into lactic acid

Letters in Applied Microbiology, 2018
This work investigates the potential bioconversion of spent coffee grounds (SCG) into lactic acid (LA). SCG were hydrolysed by a combination of dilute acid treatment and subsequent application of cellulase. The SCG hydrolysate contained a considerable amount of reducing sugars (9·02 ± 0·03 g l-1 , glucose; 26·49 ± 0·10 g l-1 galactose and 2·81 ± 0·07 g 
H. Hudeckova, M. Neureiter, S. Obruca, S. Frühauf, I. Marova   +4 more
openaire   +2 more sources

Co-liquefaction of spent coffee grounds and lignocellulosic feedstocks

Bioresource Technology, 2017
Co-liquefaction of spent coffee grounds (SCG) with paper filter (PF), corn stalk (CS) and white pine bark (WPB) respectively, was examined in subcritical water for bio-crude oil production. The optimum reaction temperature was 250°C, and the mixing biomass ratio was 1:1.
Linxi, Yang, Quan Sophia, He, Peter, Havard, Kenneth, Corscadden, Chunbao Charles, Xu, Xuan, Wang   +5 more
openaire   +2 more sources

Spent Coffee Grounds as a Versatile Source of Green Energy

Journal of Agricultural and Food Chemistry, 2008
The production of energy from renewable and waste materials is an attractive alternative to the conventional agricultural feed stocks such as corn and soybean. This paper describes an approach to extract oil from spent coffee grounds and to further transesterify the processed oil to convert it into biodiesel. This process yields 10-15% oil depending on
Narasimharao, Kondamudi, Susanta K, Mohapatra, Mano, Misra   +2 more
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Anaerobic digestion of spent coffee grounds

Biomass, 1983
Anaerobic digestion of spent coffee grounds (3 kg m−3 day−1) with efficient solids recycling achieved 99% conversion of solids and gas yields of 0·54 m3 kg−1 (56–63% methane). Gas production declined steadily over the test period and after 80 days had fallen from an initial value of 1·70 litre litre−1 day−1 to 0·45 or 0·33 litre litre−1 day−1, with or ...
openaire   +1 more source

Spent Coffee Grounds for Energy Generation

2022
Em face da necessidade do desenvolvimento de novas tecnologias para geração de energia, têm surgido propostas que visam a adoção de biomassas alternativas para tal finalidade. No presente trabalho, é proposta a utilização da borra de café, um rejeito urbano doméstico geralmente descartado, para produção de biocombustíveis e geração de energia. Uma rota
Klusener, Arthur da Silva, Zabot, Giovani Leone, Tres, Marcus Vinicius, Cunha, Estevao S. L., Morais, Jessica R., Silva, Jefferson F., Souza, Victoria L.   +6 more
openaire   +1 more source

Valorization of spent coffee grounds – A new approach

Separation and Purification Technology, 2018
Abstract It is established that from well selected spent coffee grounds by water extraction and subsequent extract nanofiltration one can obtain valuable products as permeate and retentate fractions. The obtained permeate is of high caffeine concentration and is potentially applicable in soft and energy drinks production.
D. Peshev, D. Mitev, L. Peeva, G. Peev
openaire   +1 more source

Green nanocomposites filled with spent coffee grounds

Journal of Applied Polymer Science, 2015
ABSTRACTThis study evaluated physical properties of the nanocomposites reinforced by used coffee grounds. Coffee grounds were ball‐milled and filtered in an effort to secure nanoparticles for the fabrication of polyvinyl alcohol (PVA)/coffee nanocomposites.
Hyun Kyung Lee, Young Gi Park, Taikyeong Jeong, Young Seok Song   +3 more
openaire   +1 more source