The effects of microorganism on coffee pulp pretreatment as a source of biogas production

Juliastuti, Sri Rachmania; Widjaja, Tri; Altway, Ali; Sari, Vivi Alvionita; Arista, Dessy; Iswanto, Toto

doi:10.1051/matecconf/201815603010

Cited by 10 publications

(10 citation statements)

References 2 publications

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“…The content of pectins in the coffee pulp used was 20.5% (after AIS fractionation, see below), being higher than the 6.5% reported by Pulgarin et al (1991) and also by Woldesenbet et al (2015), and the 2.3% reported by Juliastuti et al (2018). Hemicelluloses and cellulosic (Juliastuti et al, 2018). The amount of reducing sugars (5.4%) is very low compared to the 50% reported by Pandey et al (2000), 44% by Porres et al (1993) and 51% by Braham and Bresani (1979).…”

Section: Characteristics Of the Dry Coffee Pulpmentioning

confidence: 50%

“…The same for the value of caffeine (1.4%), since Porres et al (1993) ). The content of pectins in the coffee pulp used was 20.5% (after AIS fractionation, see below), being higher than the 6.5% reported by Pulgarin et al (1991) and also by Woldesenbet et al (2015), and the 2.3% reported by Juliastuti et al (2018). Hemicelluloses and cellulosic (Juliastuti et al, 2018).…”

Section: Characteristics Of the Dry Coffee Pulpmentioning

confidence: 58%

“…Coffee pulp has been used as a supplement in animal feed (Pedraza-Beltrán et al, 2012;Padmapriya et al, 2013), to produce pellets for heat generation (Cubero-Abarca et al, 2014), to obtain organic fertilizers and composts (Woldesenbet et al, 2015), bioethanol (Gurram et al, 2016), biogas (Juliastuti et al, 2018) and phenolic compounds (Geremu et al, 2016;Serna-Jiménez et al, 2018;Santos da Silveira et al, 2019). It is an interesting point of research the degradation of coffee pulp by microorganisms (Parani and Eyini, 2012;Kandasamy et al, 2016;Mata et al, 2016) for production of proteins and hydrolytic enzymes, particularly pectic enzymes and related (Venugopal et al, 2007;Murthy et al, 2009;Nava et al, 2011;Murthy and Naidu, 2012a;Oumer and Abate, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of coffee pulp as substrate for polygalacturonase production in solid state fermentation

Frómeta¹,

Sánchez²,

García

2020

Emir J Food Agric

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The purpose of this research is to evaluate the coffee pulp, a by-product of coffee processing, as substrate for polygalacturonase production by solid state fermentation. In addition, it is a way to take advantage of the coffee pulp. Characterization of the coffee pulp revealed a high content of nutrients for fungi growth, such as reducing sugars (5.4% of dry pulp), proteins (9.4% of dry pulp), pectins (20.5% of dry pulp), which are inducers of pectic hydrolases production and source of carbon after degradation, and caffeine (1.4% of dry pulp), among others. The characterization of the cell-wall of coffee pulp revealed, after polysaccharides fractionation, the content in cell-wall pectins (25.5%), hemicelluloses (11.5%) and cellulosic residue (44%). A strain of Aspergillus niger, called van Thiegem, has been selected as a good producer of polygalacturonases (60 U/ml) using the coffee pulp as the growth substrate. During fermentation, reducing sugars, caffeine and phenolic compounds were consumed till almost exhaustion. A partial characterization of the polygalacturonase using high methoxyl pectin as substrate indicates an optimal pH of 4.0 and 45oC as optimal temperature, which are good values for the use of the enzyme in vegetable processing, including coffee processing.

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Section: Characteristics Of the Dry Coffee Pulpmentioning

confidence: 50%

Section: Characteristics Of the Dry Coffee Pulpmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

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Evaluation of coffee pulp as substrate for polygalacturonase production in solid state fermentation

Frómeta¹,

Sánchez²,

García

2020

Emir J Food Agric

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“…Table 1 presents the results of the content of cellulose and lignin in the CP. 13-57.9 18-13 [35] 57.9 [36] 16.0-25.88 [37] Table 1 shows the results obtained in the research on the quantification of lignin and cellulose in the CP. As it can be seen, the value of cellulose is higher than that of lignin, and these are within the bibliographic reports presented in the literature.…”

Section: Lignocellulosic Content Of the Cpmentioning

confidence: 99%

Biosorption of Pb(II) Using Coffee Pulp as a Sustainable Alternative for Wastewater Treatment

et al. 2021

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The present research shows the results obtained from the biosorption process of Pb, using coffee pulp as a biosorbent in synthetic waters. To do this, the lignin and cellulose content and the percentage of removal of Pb2+ ions was determined; additionally, the sorption’s optimal variables, such as the optimum pH, the point of zero charge (pHpzc), the kinetics and the adsorption isotherm, were determined. A comparison was made with other by-products derived from coffee crops. According to the results obtained in this research, the cellulose percentage was 29.12 ± 0.22% and the lignin percentage was 19.25 ± 0.16% in the coffee pulp, the optimum pH was 2.0 units and the kinetic model, which adjusted to the biosorption’s process, was the pseudo-second order of Ho and McKay, presenting an isotherm of Langmuir’s model and pHpzc of 3.95 units. Lastly, the removal of the pollutant was 86.45%, with a capacity of maximum adsorption of 24.10 mg·g−1 obtained with a particle size of 180 µm, time of contact of 105 min and at 100 RPM. Finally, we express that (a) the coffee pulp can be used as a sustainable alternative for the removal of the pollutant mentioned in synthetic and/or industrial wastewater matrices, to meet goals 3.9 and 6.9 of the Sustainable Development Goals of the 2030 agenda, and (b) the novelty of this research is the use of an agricultural waste of easy acquisition as a sorbent, without chemical modification, since it presented a high percentage of efficiency in the removal of Pb2+ ions. In turn, the challenge of this research is implementing this green technology on a pilot, semi-industrial and/or industrial scale in wastewater treatment systems.

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“…B. subtilis can degrade lignin and pectin (Gummadi & Kumar, 2005;Torimiro & Okonji, 2013;Cragg et al 2015). Juliastuti et al (2018) successfully achieved the combination of three strains, A. niger, Pseudomonas putida, and T. harzianum to treat coffee pulp in degrading lignin and anti-nutritional factor for a biogas feedstock.…”

mentioning

confidence: 99%

The Effect of Mixed Biological Pretreatment and PEG 4000 on Reducing Sugar Production from Coffee Pulp Waste

Iswanto¹,

Hendrianie²,

Shovitri³

et al. 2019

IJTech

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Biological methods using bacteria and fungi are regarded as more economically viable and environmentally friendly alternatives for improving lignocellulosic degradation. Coffee pulp waste (CPW) as a lignocellulosic biomass is abundant and has potential as a reducing sugar feedstock. However, it contains lignin as a matrix polymer, which associated with pectin and cover the cellulosic microfibrils and make it difficult to be digested during the bioprocess. In this study, the performance of biological pretreatment in reducing lignin and pectin using a coculture of Bacillus subtilis (BS), Aspergillus niger (AN), or Trichoderma reesei (TR) has been investigated. The pretreatment of the CPW was made using various microbial ratios in an aerobic stirred-bioreactor and incubated at 30 o C, pH 5 for 7 days. Removal of lignin and pectin was analyzed during the pretreatment process. PEG 4000 as a surfactant was used and its effect on the yield of reducing sugar production from pretreated CPW using a A. niger and T. viride (TV) co-culture with a surfactant to substrate ratio of 1:1 (w/w) was investigated. A culture without surfactant was used as a control. The results reveal that the best lignin and pectin removal was 99.9%, when using a co-culture of AN and TR with a ratio of 1:1 (v/v) and of BS and TR with a ratio of 2:1 (v/v). The cellulose content of CPW in these co-cultures was 86.99% (w/w) and 81.61% (w/w), respectively, and the reducing sugar concentration obtained was 12.5 g/L and 9.74 g/L respectively. In further hydrolysis of pretreated CPW using a AN:TV (2:1) coculture with the addition of surfactant, the yield of reducing sugar obtained was higher than that of the control, at 20.69%. Use of PEG 4000 as a surfactant had a positive effect on enhancing the yield of reducing sugar from coffee pulp waste.

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The effects of microorganism on coffee pulp pretreatment as a source of biogas production

Cited by 10 publications

References 2 publications

Evaluation of coffee pulp as substrate for polygalacturonase production in solid state fermentation

Evaluation of coffee pulp as substrate for polygalacturonase production in solid state fermentation

Biosorption of Pb(II) Using Coffee Pulp as a Sustainable Alternative for Wastewater Treatment

The Effect of Mixed Biological Pretreatment and PEG 4000 on Reducing Sugar Production from Coffee Pulp Waste

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