Results 31 to 40 of about 220,863 (272)

Evaluation of some renewable energy technologies [PDF]

open access: yes, 2017
Purpose. The study aims to outline and compare various renewable energy alternatives in view of the global warming crisis and depletion of fossil fuels which cause emissions of carbon dioxide.
Basu, R
core   +2 more sources

Coffee Husks Valorization for Levoglucosan Production and Other Pyrolytic Products through Thermochemical Conversion by Fast Pyrolysis

open access: yesEnergies, 2023
Levoglucosan is an anhydrosugar from biomass that has important applications as a platform for obtaining many value-added derivatives with high demand in the chemical industry and bioproducts by fermentation, including biofuels, among others.
E. G. Silveira Junior   +5 more
semanticscholar   +1 more source

Espectroscopia no infravermelho médio e análise sensorial aplicada à detecção de adulteração de café torrado por adição de cascas de café

open access: yesQuímica Nova, 2012
Mid-infrared spectroscopy and chemometrics were used to identify adulteration in roasted and ground coffee by addition of coffee husks. Consumers' sensory perception of the adulteration was evaluated by a triangular test of the coffee beverages.
Katiany Mansur Tavares   +5 more
doaj   +1 more source

Near-Infrared Spectroscopy Applied to the Detection of Multiple Adulterants in Roasted and Ground Arabica Coffee

open access: yesFoods, 2021
Roasted coffee has been the target of increasingly complex adulterations. Sensitive, non-destructive, rapid and multicomponent techniques for their detection are sought after.
Cinthia de Carvalho Couto   +4 more
doaj   +1 more source

Coffee husk ashes as supplementary cement material

open access: yes, 2022
The objective of this work is to present the characterization of Coffee Husks Ashes (CHA) and evaluate its potential as Supplementary Cementitious Material (SCM). To achieve this purpose, X-ray Fluorescence (XRF) and modified Chapelle tests were performed in the CHA before different burning process.
Miranda, EHN   +5 more
openaire   +1 more source

Preparation and Characterization of Pectin-based Biopolymer from Combination of Coffee and Cocoa Husks as Agroindustrial Waste Utilization [PDF]

open access: yesBIO Web of Conferences
Coffee and cocoa are among the largest commodities in Indonesia. During the processing, high amounts of these husks are generated as agricultural waste that contains pectin, which applicable to be used for biopolymers.
Alfiansyah Putra   +5 more
doaj   +1 more source

Adulteration of Soluble Coffee with Coffee Husks and Parchments

open access: yesJournal of AOAC INTERNATIONAL, 1995
Abstract Commercial soluble coffee can be adulterated with coffee husks or parchments. Xylose is a good tracer for this type of mispractice. The analysis of total xylose in a wide selection of green beans and the assessment of its fate during processing allowed the derivation of a maximum total xylose limit of 0.40%, above which a ...
J, Prodolliet   +6 more
openaire   +2 more sources

Development of Pratylenchus Coffeae in Biochar Applied Soil, Coffee Roots and Its Effect on Plant Growth [PDF]

open access: yes, 2017
Biochar improve physical, chemical and biological properties of soil. It may also be used as botanical pesticides. The experiment was aimed to determine the effect of biochar on population development of parasitic nematode Pratylenchus coffeae.
Rahayu, D. S. (Dwi), Sari, N. P. (Niken)
core   +2 more sources

Biotechnological potential of coffee pulp and coffee husk for bioprocesses

open access: yesBiochemical Engineering Journal, 2000
Advances in industrial biotechnology offer potential opportunities for economic utilization of agro-industrial residues such as coffee pulp and coffee husk. Coffee pulp or husk is a fibrous mucilagenous material (sub-product) obtained during the processing of coffee cherries by wet or dry process, respectively.
Pandey, A.   +5 more
openaire   +3 more sources

Effect of pyrolysis temperature and time of robusta coffee husk on yield and product characteristics [PDF]

open access: yesJournal of the Serbian Chemical Society
The utilization and recycling of biochar from coffee husks is a global issue, as 1.8 Mt of coffee husks were produced in 2023. The mechanism of coffee husk pyrolysis and the factors influencing pyrolysis temperature and time on the properties of biochar ...
Nguyen Thi Thu Huong   +3 more
doaj   +1 more source

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