Biotechnological conversion of spent coffee grounds into lactic acid

Hudečková, Helena; Neureiter, Markus; Obruča, Stanislav; Fruhauf, S.; Márová, Ivana

doi:10.1111/lam.12849

Cited by 53 publications

(25 citation statements)

References 25 publications

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“…Furthermore, its thermotolerant nature (50-55 • C) minimises the need for sterile conditions. Hudeckova et al [45] described the use of SCG as a promising raw material substrate for LA production. SCG was first hydrolyzed and then used as substrate for culturing several lactic acid bacteria and LA producing B. coagulans.…”

Section: Lactic Acidmentioning

confidence: 99%

“…Spent coffee ground Saccharomices cerevisiae 0.11 g/g SCG [49] Bacillus coagulans 98.0% [45] Coffee mucilage Bacillus coagulans 99.8% [47] Coffee pulp Bacillus coagulans 99.7% [48] Succinic acid Coffee husk Actinobacillus succinogens 0.95 g/g reducing sugars [23] Coffee Silver skin Actinobacillus succinogens 84% [53] Levulinic acid Spent coffee ground / 13-15%…”

Section: Lactic Acidmentioning

confidence: 99%

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Monomers, Materials and Energy from Coffee By-Products: A Review

et al. 2021

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In recent years, the circular economy and sustainability have gained attention in the food industry aimed at recycling food industrial waste and residues. For example, several plant-based materials are nowadays used in packaging and biofuel production. Among them, by-products and waste from coffee processing constitute a largely available, low cost, good quality resource. Coffee production includes many steps, in which by-products are generated including coffee pulp, coffee husks, silver skin and spent coffee. This review aims to analyze the reasons why coffee waste can be considered as a valuable source in recycling strategies for the sustainable production of bio-based chemicals, materials and fuels. It addresses the most recent advances in monomer, polymer and plastic filler productions and applications based on the development of viable biorefinery technologies. The exploration of strategies to unlock the potential of this biomass for fuel productions is also revised. Coffee by-products valorization is a clear example of waste biorefinery. Future applications in areas such as biomedicine, food packaging and material technology should be taken into consideration. However, further efforts in techno-economic analysis and the assessment of the feasibility of valorization processes on an industrial scale are needed.

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Section: Lactic Acidmentioning

confidence: 99%

Section: Lactic Acidmentioning

confidence: 99%

Monomers, Materials and Energy from Coffee By-Products: A Review

et al. 2021

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“…There is much information about the use and management of biomass from spent coffee ground with potential applications for biorefineries such as the production of polyhydroxyalkanoates [22], antioxidants and polyphenols [7,23,24], lactic acid [25], and biodiesel, bioethanol, biogas and biofuels [26][27][28] as well as biopolymers and biocomposites [29] among other. These products might help to close the loop of this biowaste generated by the final consumer, but it also faces the challenge collecting the small amounts of spent coffee ground from individuals and food establishments to attain the required amounts of residues for feasible industrial processing.…”

Section: Biowaste From the Coffee Industrymentioning

confidence: 99%

Tropical agroindustrial biowaste revalorization through integrative biorefineries—review part I: coffee and palm oil by-products

Mora-Villalobos

Aguilar

Carballo-Arce

et al. 2021

Biomass Conv. Bioref.

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Tropical crops are an important source of wealth in many countries. The current agribusiness model is based on the production of a final commodity, leading to the production of organic by-products (biowastes) that in many cases contain bioactive compounds with a potential added value. The exploitation of these by-products is the foundation of the circular economy that leads to the generation of greener bioprocesses for the industry with foreseeable economic improvements in production systems. This review aims to point out the idle opportunities of agricultural production systems and their associated biowastes to contribute to the establishment of a bioeconomy. Hence, the focus lies on five tropical extensive crops: coffee, oil palm, sugar cane, banana, and pineapple. This first part of the review explores agricultural wastes originated from the coffee and oil palm industrial process and is oriented on the potential use of these by-products as a starting material for the alternative obtention of chemicals, otherwise obtained from petrochemistry. The second part of the review focuses on prospective use of lignocellulosic rich biowaste that is derived from the industrialization of sugar cane, banana, and pineapple. A fundamental difference for the use of coffee biomass compared to other crops is the presence of numerous bioactive compounds that are not yet properly utilized, such as antioxidants (i.e., caffeic acid, chlorogenic acid, ferulic acid), as well as their possible use in the manufacture of products of interest in the cosmetic (i.e., quinic acid) or pharmaceutical industry (i.e., caffeic acid phenethyl ester). In the case of oil palm, its potential lies in obtaining chemicals such as glycerol and carotenoids, or in the bioenergy production.

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“…Pre-treated SCG (e.g. sequential sulfuric acid hydrolysis (13.5 g/L) and enzymatic hydrolysis of a mixture of 4 % (v/v) Celluclast 1.5L, 4 % (v/v) β-glucosidase and 4 % (v/v) Viscozyme L, 100 rpm, 48 h) has been used as fermentation substrates to produce lactic acid with Bacillus coagulans ( Hudeckova et al, 2018 ), or novel SCG spirits fermented with Saccharomyces cerevisiae RL-11 strain ( Sampaio et al, 2013 ; Machado et al, 2018 ). Therefore, it seems that the abundant carbohydrates and proteins in SCG after pre-treatment could serve as available carbon and nitrogen sources for the growth of microorganisms (e.g.…”

Section: Introductionmentioning

confidence: 99%

The potential of spent coffee grounds hydrolysates fermented with Torulaspora delbrueckii and Pichia kluyveri for developing an alcoholic beverage: The yeasts growth and chemical compounds modulation by yeast extracts

Liu

2021

Current Research in Food Science

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This study evaluated the effects of yeast extracts (YE) addition (0 % and 0.25 %, w/v) on the no-volatile and volatile compounds of spent coffee grounds (SCG) hydrolysates fermented with single-cultures of two non- Saccharomyces wine yeasts, Torulaspora delbrueckii and Pichia kluyveri . The added YE improved the growth of both T. delbrueckii and P. kluyveri , especially P. kluyveri , resulting in higher ethanol production (1.98 % vs 1.47 %, v/v) by the latter yeast. In addition, the added YE did not impact on most of the alkaloids production regardless of yeast type, while significantly decreasing the contents of chlorogenic, and caffeic acids in SCG hydrolysates fermented with P. kluyveri . Furthermore, more odor-active compounds such as acetate esters and 2-phenylethyl alcohol were produced when YE was added, and P. kluyveri generated significantly higher amounts of esters compared to that of T. delbrueckii . Moreover, YE addition showed a more noticeable effect on the fermentation performance of P. kluyveri relative to that of T. delbrueckii . These findings indicated the potential of SCG hydrolysates fermented with evaluated non- Saccharomyces yeasts and may expand the applications on utilizing SCG to develop new value-added alcoholic products.

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Biotechnological conversion of spent coffee grounds into lactic acid

Cited by 53 publications

References 25 publications

Monomers, Materials and Energy from Coffee By-Products: A Review

Monomers, Materials and Energy from Coffee By-Products: A Review

Tropical agroindustrial biowaste revalorization through integrative biorefineries—review part I: coffee and palm oil by-products

The potential of spent coffee grounds hydrolysates fermented with Torulaspora delbrueckii and Pichia kluyveri for developing an alcoholic beverage: The yeasts growth and chemical compounds modulation by yeast extracts

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