The chemical composition of exhausted coffee waste

Pujol, Dolors; Liu, C.; Gominho, Jorge; Olivella, M. Àngels; Fiol, Núria; Villaescusa, Isabel; Pereira, Helena

doi:10.1016/j.indcrop.2013.07.056

Cited by 244 publications

(136 citation statements)

References 42 publications

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“…An exception is SCG without addition of other compounds, where the nitrogen content is 2.45% and the C/N ratio is 21.7, which is also confirmed by other authors [1,13]. The established content is comparable to the amount of nitrogen in liquid manure, and higher than those recorded in composts and manure [14] and in samples of SCG given by other authors [4].…”

Section: Characteristics Of Tableted Fertilizerssupporting

confidence: 80%

“…5, 5 and 10% (v/v This causes not only the loss of organic matter, but also the time and effort necessary to carry out the composting process. Spent coffee grounds (SCG) material includes a wide range of valuable organic compounds which contain, among others, tannic acid, cellulose, hemicellulose, lipids, organic acids and polyphenols and therefore it is used for the production of biochar, for composting as a sorbent and for the preparation of biodiesel [2][3][4]. SCG has been also considered as valuable source of polyphenols and galactomannans for application in medicine, cosmetics and food industry [5].…”

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confidence: 99%

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Acute Toxicity of Experimental Fertilizers Made of Spent Coffee Grounds

Ciesielczuk

Rosik-Dulewska

Poluszyńska

et al. 2017

Waste Biomass Valor

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results indicate the lack of toxic effect of the tested fertilization doses on the germination of the test plants, with the exception of cress. There was, however a strong inhibition of seedling growth during 72 h in samples containing 10% of the tested fertilizers, especially when they showed significant salinity and high pH. The most sensitive species used for doses of fertilizer was cress, and the least sensitive was cucumber, for which there was a strong stimulation of root growth already at 5% share of tested fertilizer in the substrate. EI shows particular individual character of tested species using fertilizer based on SCG. The inhibition of wheat roots elongation was observed even in 2.5% fertilizers fare.Keywords Spent coffee grounds · SCG · Acute toxicity · Organic fertilizer · Sustainable agriculture IntroductionSeparate collection of biodegradable waste fractions, carried out at its source, enables not only to channel it to the process of composting or biogas production, but also to obtain high-quality fertilizer. This also applies to the waste solvent extractable materials generated after the preparation of beverages from coffee beans. These wastes are formed in large quantities due to the increasing consumption of this beverage [1]. The annual coffee consumption in Poland has been increasing and currently stands at 3 kg per capita, however this is a number several times lower than in the Scandinavian countries. In large part these wastes are directed to biodegradable fraction containers. In practice, however, the containers contain significant amounts of non-compostable waste and, even if a compost is produced, its quality will be low.Abstract Sustainable agriculture places new demands on agricultural practice and, in particular, plant protection treatments and fertilization. Therefore, an increase in demand for organic fertilizers of good quality is expected. In particular, the organic matter contained in the waste of the food industry or generated in households, in the absence of contamination, can be used for the production of "fertilizer", which could be used in organic crop production. The paper presents basic characteristics of tested mixtures and the results of testing for acute toxicity of the mixture made from spent coffee grounds (SCG) modified with ash arising from the low-temperature combustion of biomass or magnesium sulphate and blood meal. The plant tests were conducted on: mustard (Synapis alba L.), wheat (Triticum sp. L.), cucumber (Cucumis sativus L.) and garden cress (Lepidium sativum L.).Toxicity tests were carried out using a standard 72 h procedure using the Phytotoxkit microbiotest platelet involving fertilizer 2. 5, 5 and 10% (v/v This causes not only the loss of organic matter, but also the time and effort necessary to carry out the composting process. Spent coffee grounds (SCG) material includes a wide range of valuable organic compounds which contain, among others, tannic acid, cellulose, hemicellulose, lipids, organic acids and polyphenols and therefore it is used for th...

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Section: Characteristics Of Tableted Fertilizerssupporting

confidence: 80%

mentioning

confidence: 99%

Acute Toxicity of Experimental Fertilizers Made of Spent Coffee Grounds

Ciesielczuk

Rosik-Dulewska

Poluszyńska

et al. 2017

Waste Biomass Valor

View full text Add to dashboard Cite

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“…Malaysia has a population of approximately 30 million and the coffee consumption is about 800 grams per capita [2]. GCW is an underutilized high nutrient and energy material as it contains large amount of organic compound which are fatty acid, lignin, cellulose, hemicelluloses, and other polysaccharides [3]. The existence of high content organic material and compound from the GCW has adverse environmental effect.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Alkaline Treatment and Fiber Content on the Physical, Thermal, and Mechanical Properties of Ground Coffee Waste/Oxobiodegradable HDPE Biocomposites

Tan

Kuan

Lee

2017

International Journal of Polymer Science

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Effect of alkali treatment on ground coffee waste/oxobiodegradable HDPE (GCW/oxo-HDPE) composites was evaluated using 5%, 10%, 15%, and 20% volume fraction of GCW. The composites were characterized using structural (Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM)), thermal (thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC)), mechanical (tensile and impact test) properties, and water absorption. FTIR spectrum indicated the eradication of lipids, hemicellulose, lignin, and impurities after the treatments lead to an improvement of the filler/matrix interface adhesion. This is confirmed by SEM results. Degree of crystallinity index was increased by 5% after the treatment. Thermal stability for both untreated and treated GCW composites was alike. Optimum tensile result was achieved when using 10% volume fraction with enhancement of 25% for tensile strength and 24% for tensile modulus compared to untreated composite. Specific tensile strength and modulus had improved as the composite has lower density. The highest impact properties were achieved when using 15% volume fraction that lead to an improvement of 6%. Treated GCW composites show better water resistance with 57% improvement compared to the untreated ones. This lightweight and ecofriendly biocomposite has the potential in packaging, internal automotive parts, lightweight furniture, and other composite engineering applications.

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“…Development of suitable techniques for large-scale recovery and purification of peptides will increase their applications in pharmaceutical and food industries. Pujol et al (2013) investigated the chemical composition of exhausted coffee waste generated in a soluble coffee industry and found that total polyphenols and tannins represent <6 and <4% of the exhausted coffee wastes, respectively. Zuorro and Lavecchia (2012) extracted total phenolic content of 17.75 mg gallic acid equivalent GAE (gallic acid equivalents)/g from spent coffee grounds (SCG) collected from coffee bars and 21.56 mg GAE/g from coffee capsules unloaded from an automatic espresso machine.…”

Section: Food Waste As a Source Of Bioactive Compoundsmentioning

confidence: 99%

Food waste: a potential bioresource for extraction of nutraceuticals and bioactive compounds

Kumar

Yadav

Kumar

et al. 2017

Bioresour. Bioprocess.

307

131

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Food waste, a by-product of various industrial, agricultural, household and other food sector activities, is rising continuously due to increase in such activities. Various studies have indicated that different kind of food wastes obtained from fruits, vegetables, cereal and other food processing industries can be used as potential source of bioactive compounds and nutraceuticals which has significant application in treating various ailments. Different secondary metabolites, minerals and vitamins have been extracted from food waste, using various extraction approaches. In the next few years these approaches could provide an innovative approach to increase the production of specific compounds for use as nutraceuticals or as ingredients in the design of functional foods. In this review a comprehensive study of various techniques for extraction of bioactive components citing successful research work have been discussed. Further, their efficient utilization in development of nutraceutical products, health benefits, bioprocess development and value addition of food waste resources has also been discussed.

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The chemical composition of exhausted coffee waste

Cited by 244 publications

References 42 publications

Acute Toxicity of Experimental Fertilizers Made of Spent Coffee Grounds

Acute Toxicity of Experimental Fertilizers Made of Spent Coffee Grounds

Characterization of Alkaline Treatment and Fiber Content on the Physical, Thermal, and Mechanical Properties of Ground Coffee Waste/Oxobiodegradable HDPE Biocomposites

Food waste: a potential bioresource for extraction of nutraceuticals and bioactive compounds

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