Evaluation of Valorisation Strategies to Improve Spent Coffee Grounds’ Nutritional Value as an Ingredient for Ruminants’ Diets

Martín, David San; Ibarruri, Jone; Luengo, Nagore; Ferrer, Jorge Luis Romero; García-Rodriguez, A.; Goiri, Idoia; Atxaerandio, Raquel; Medjadbi, Mounir; Zufía, Jaime; Cámara, Estíbaliz Sáez de; Iñarra, Bruno

doi:10.3390/ani13091477

Cited by 5 publications

(2 citation statements)

References 50 publications

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“…When the grape stems were not previously washed the enzymatic and alkali-enzymatic hydrolysis, as commented, this reduced the TRS content and of grape stems increased fibre components, leading to a reduced digestibility of the final product compared to control samples (35% and 40% decrease, respectively). San Martin et al (2023) [49] observed the same trend using similar enzymes and spent coffee grounds as substrates. This reduced digestibility was coherent with the reduced SCFA production observed during fermentation, since SCFA are end-products of microbial fermentation [26].…”

Section: Discussionmentioning

confidence: 61%

Evaluation of Valorisation Strategies to Improve Grape Stems’ Nutritional Value as an Ingredient for Ruminants’ Diets

Martín¹,

Ibarruri²,

Luengo³

et al. 2023

Sustainability

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Grape stems are a by-product of wine production which is managed as a waste. Animal feeding arises as a potential alternative. However, its practical use may be compromised by its high lignin content. In this sense, hydrolysis emerges as a strategy to increase fibre digestibility. In addition, due to its high and variable moisture content, it should be dried to prevent microbial deterioration and a washing pre-treatment to reduce sugar content becomes necessary to minimize drying problems due to sugar melting at high temperatures. Within this framework, this study assessed the effect of washing and three different hydrolysis on the nutritive value of grape stems. A factorial design was carried out, with washing (with or without) and hydrolysis (without, enzymatic, alkali, and alkali-enzymatic) as factors. When the washing pre-treatment was not applied, only the alkali hydrolysis process maintained in vitro digestibility, but at the expense of a lower fermentation efficiency. When the washing pre-treatment was applied, fibre contents were similar among hydrolysis processes, but the alkali hydrolysis improved in vitro digestibility with similar fermentation efficiency. In conclusion, the alkali hydrolysis maintained or improved the grape stem nutritive value depending on whether the washing pre-treatment was applied or not.

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Section: Discussionmentioning

confidence: 61%

Evaluation of Valorisation Strategies to Improve Grape Stems’ Nutritional Value as an Ingredient for Ruminants’ Diets

Martín¹,

Ibarruri²,

Luengo³

et al. 2023

Sustainability

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“…In the present study, the proximate analysis showed that SCW has high nutritive value (NDF > 650 g/kg; ADF > 350 g/kg; CP > 120 g/kg). Previously, coffee grounds have been shown to contain high protein, fat and fiber levels, meaning that it can be considered as a feed source for ruminants [21]. Several studies have used coffee pulp and husk as feed for ruminants [13,22].…”

Section: Nutritive Valuementioning

confidence: 99%

Assessment of the Impact of Coffee Waste as an Alternative Feed Supplementation on Rumen Fermentation and Methane Emissions in an In Vitro Study

Batbekh,

Ahmed,

Hanada

et al. 2023

Fermentation

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Spent coffee waste is the most common by-product of coffee processing, and it has the potential to be used as a source of organic compounds for ruminant diets. The objective of this study was to evaluate the optimal inclusion level and method for using spent coffee waste (SCW) as a ruminant feed and investigate its effects on rumen fermentation characteristics and methane (CH4) production. The present in vitro batch culture study was conducted using two different experimental designs. The first experimental design (TRIAL. 1) was performed using a control diet of 500 mg of fresh matter basal diet (60% hay/40% concentrate), with SCW being used as a feed additive at 1%, 10% and 20% of the substrate. The second experimental design was performed using the same control diet, with spent coffee waste replacing either part of the hay (TRIAL. 2) or some of the concentrate mixture (TRIAL. 3) at four different dosages (30:70, 50:50, 70:30 and 100). When SCW was supplemented as a feed additive, there were increases in the production of volatile fatty acids and gas; however, it did not show any suppressive effects on CH4 production. In contrast, when SCW was included as a replacement for hay or concentrate, there were significant reductions in CH4 production with increasing levels of SCW inclusion. These reductions in CH4 production were accompanied by negative effects on nutrient digestibility and total volatile fatty acid production. These findings demonstrate that SCW could potentially be used as a prebiotic feed additive. Additionally, when SCW is used as a replacement for silage at 70:30 and 50:50 dosages appear to be feasible as a substitute for animal feed (hay and concentrate).

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Strategies toward Green Deal implementation in the context of SCG reuse and recovery in the circular economy model

Drewnowski,

Xu,

Mao

et al. 2025

Desalination and Water Treatment

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Evaluation of Valorisation Strategies to Improve Spent Coffee Grounds’ Nutritional Value as an Ingredient for Ruminants’ Diets

Cited by 5 publications

References 50 publications

Evaluation of Valorisation Strategies to Improve Grape Stems’ Nutritional Value as an Ingredient for Ruminants’ Diets

Evaluation of Valorisation Strategies to Improve Grape Stems’ Nutritional Value as an Ingredient for Ruminants’ Diets

Assessment of the Impact of Coffee Waste as an Alternative Feed Supplementation on Rumen Fermentation and Methane Emissions in an In Vitro Study

Strategies toward Green Deal implementation in the context of SCG reuse and recovery in the circular economy model

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