Wheat, barley and oat waste: a comparative and critical presentation of methods and potential uses of treated waste

Arvanitoyannis, Ioannis S.; Tserkezou, Persefoni

doi:10.1111/j.1365-2621.2006.01510.x

Cited by 36 publications

(19 citation statements)

References 61 publications

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“…Various treatment methods for several agricultural wastes have been reviewed in several papers [16][17][18][19]. For energy application purposes, the methods can be simply divided into thermo-chemical and biological processes [20,21].…”

Section: Introductionmentioning

confidence: 99%

Production of Solid Biofuel from Agricultural Wastes of the Palm Oil Industry by Hydrothermal Treatment

Yuliansyah

Hirajima

Kumagai

et al. 2010

Waste Biomass Valor

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In this study, upgrading of agricultural waste, in the form of oil palm fronds and trunks, into solid biofuel was investigated using hydrothermal treatment. A slurry of 300 mL of water and 30 g of material was treated in a 500-mL batch autoclave equipped with stirrer, thermometer, and pressure sensor. Experiments were conducted in the temperature range 200-350°C at an initial pressure of 2.0 MPa. The slurry was gradually heated to the target temperature and held for a further 30 min. Approximately 35-65% of the original material was recovered as a solid product with favorable solid fuel characteristics. The gross calorific value ranged from 19.9 to 29.7 MJ/kg and the equilibrium moisture content was 7.6-4.5 wt%. The carbon content varied from 51.4 to 78.5 wt% and the oxygen content was 42.1-16.1 wt% after upgrading. Changes in the solid composition and carbon functional groups following upgrading were identified by FTIR and 13 C NMR. In addition, analyses on the liquid product (by GC-MS) and the gas product (by GC) were carried out to clarify the decomposition behavior of material.

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Section: Introductionmentioning

confidence: 99%

Production of Solid Biofuel from Agricultural Wastes of the Palm Oil Industry by Hydrothermal Treatment

Yuliansyah

Hirajima

Kumagai

et al. 2010

Waste Biomass Valor

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“…Applying these agricultural wastes as substrate for lipase production is believed to be economically feasible; since in this way, vegetable waste treatment is omitted which is an essential step for pollution prevention in agricultural industries (Gutarra et al ., ; de Azeredo et al ., ; Arvanitoyannis & Varzakas, ; Kempka et al ., ). Some agricultural wastes are directly applicable in various industries especially in food industry include wheat, barley and oat wastes (Arvanitoyannis & Tserkezou, ), corn and rice wastes (Arvanitoyannis & Tserkezou, ) and soybean meal and sugarcane bagasse (Rodriguez et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Production of active lipase by Rhizopus oryzae from sugarcane bagasse: solid state fermentation in a tray bioreactor

Vaseghi

Najafpour

Mohseni

et al. 2012

Int J of Food Sci Tech

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Summary This study deals with production of lipase in solid state fermentation by Rhizopus oryzae from sugarcane bagasse. A tray bioreactor was designed for the extracellular enzyme production. Daily, lipase production was evaluated at several incubation temperatures. Furthermore, the influence of temperature and humidity of the cabinet, depth of solid bed, particle size, initial moisture content and supplementary substrate (olive oil) as carbon source was investigated. The obtained results showed that bioreactor temperature of 45 °C, humidity of 80%, solid bed depth of 0.5 cm, particle size in the range of 0.335–1 mm, substrate initial moisture content of 80% for the top tray and 70% for the middle tray and supplementary substrate of 8% (v/w) olive oil led to maximum lipase production. Under optimum fermentation conditions after 72‐h incubation, maximum lipase activities for the top, middle and bottom trays were 215.16, 199.36 and 52.64 U gds−1, respectively.

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“…New aspects concerning the use of this waste as a raw material to extract important bioactive components is the other aspect to minimize environmental pollution through the value addition process. Because of their high value nature and less cost of extraction methods, extraction and use of bioactive compounds from waste pulp as a food additive are gaining interest [8,9]. Coffee pulp as a by-product contains associated bioactive compounds like polyphenols with good antioxidant properties, which endow additional health benefits.…”

Section: Introductionmentioning

confidence: 99%

Extraction and determination of total polyphenols and antioxidant capacity of red coffee (Coffea arabica L.) pulp of wet processing plants

Geremu

Tola

Sualeh

2016

Chem. Biol. Technol. Agric.

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Background: Coffee waste disposal from wet processing units is increasing with an increase in coffee consumption throughout the world. This not only has a limitation in terms of environmental pollution, but also high waste volume is an opportunity to extract essential bioactive compounds and antioxidants for food and pharmaceutical industries. The aim of this paper was to investigate the effects of extraction solvents and coffee cherry pulps of different varieties in terms of their yield potential for total polyphenols and antioxidant capacity. Results:Results show that coffee cherry pulps from different varieties extracted by different solvents showed significant effects. Among the studied varieties, coffee cherry pulp from Ababuna variety was found to be superior in total polyphenols (1809.9 mgGAE/gm) content and antioxidant capacity (70 % inhibition). This value was followed by pulp from the Dessu variety. But the pulp from variety 741, extracted using aqueous ethanol solvent, showed inferior results for both total polyphenol content and antioxidant capacity. Among the solvents studied in this work, aqueous methanol responded better for pulps of all varieties except Dessu which responded better for aqueous acetone solvent.

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Wheat, barley and oat waste: a comparative and critical presentation of methods and potential uses of treated waste

Cited by 36 publications

References 61 publications

Production of Solid Biofuel from Agricultural Wastes of the Palm Oil Industry by Hydrothermal Treatment

Production of Solid Biofuel from Agricultural Wastes of the Palm Oil Industry by Hydrothermal Treatment

Production of active lipase by Rhizopus oryzae from sugarcane bagasse: solid state fermentation in a tray bioreactor

Extraction and determination of total polyphenols and antioxidant capacity of red coffee (Coffea arabica L.) pulp of wet processing plants

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