Effect of moisture content on the extraction rate of coffee oil from spent coffee grounds using Norflurane as solvent

2021 ◽  
Vol 165 ◽  
pp. 172-179
Author(s):  
Rosa Colucci Cante ◽  
Isidoro Garella ◽  
Marianna Gallo ◽  
Roberto Nigro
Keyword(s):  
Moisture Content ◽  
Extraction Rate ◽  
Spent Coffee Grounds ◽  
Coffee Grounds ◽  
Effect Of Moisture ◽  
Coffee Oil

Effect of moisture content on oil extraction from spent coffee grounds

2018 ◽  
Vol 40 (5) ◽  
pp. 501-509 ◽  
Author(s):  
Nomfundo Mabona ◽  
Wale Aboyade ◽  
Mansoor Mollagee ◽  
Liberty L. Mguni
Keyword(s):  
Moisture Content ◽  
Oil Extraction ◽  
Spent Coffee Grounds ◽  
Coffee Grounds ◽  
Effect Of Moisture

scholarly journals Biodiesel Production from Spent Coffee Grounds

2017 ◽  
Vol 25 (40) ◽  
pp. 113-121 ◽  
Author(s):  
Lenka Blinová ◽  
Alica Bartošová ◽  
Maroš Sirotiak
Keyword(s):  
Organic Solvents ◽  
Oil Extraction ◽  
Waste Material ◽  
Biodiesel Production ◽  
Spent Coffee Grounds ◽  
Drying Oil ◽  
Biodiesel Feedstock ◽  
Coffee Grounds ◽  
Coffee Oil

Abstract The residue after brewing the spent coffee grounds is an oil-containing waste material having a potential of being used as biodiesel feedstock. Biodiesel production from the waste coffee grounds oil involves collection and transportation of coffee residue, drying, oil extraction, and finally production of biodiesel. Different methods of oil extraction with organic solvents under different conditions show significant differences in the extraction yields. In the manufacturing of biodiesel from coffee oil, the level of reaction completion strongly depends on the quality of the feedstock oil. This paper presents an overview of oil extraction and a method of biodiesel production from spent coffee grounds.

scholarly journals Recycling of spent coffee grounds for useful extracts and green composites

RSC Advances ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 2682-2692
Author(s):  
Yihao Leow ◽  
Pek Yin Michelle Yew ◽  
Pei Lin Chee ◽  
Xian Jun Loh ◽  
Dan Kai
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Chemical Composition ◽  
Chemical Compounds ◽  
Green Composites ◽  
Spent Coffee Grounds ◽  
Coffee Grounds ◽  
Coffee Oil ◽  
Properties Of Composites

Spent coffee grounds are mostly discarded as waste. Here we recycle them for chemical compounds and as composite material fillers. Our study evaluated the chemical composition of coffee oil extracts and mechanical properties of composites formed.

The Physical and Mechanical Properties of Biocomposite Films Composed of Poly(Lactic Acid) with Spent Coffee Grounds

2019 ◽  
Vol 824 ◽  
pp. 87-93
Author(s):  
Nattawut Suaduang ◽  
Sukunya Ross ◽  
Gareth M. Ross ◽  
Supatra Pratumshat ◽  
Sararat Mahasaranon
Keyword(s):  
Lactic Acid ◽  
Physical And Mechanical Properties ◽  
Poly Lactic Acid ◽  
Biodegradable Films ◽  
Spent Coffee Grounds ◽  
Elongation At Break ◽  
Biocomposite Films ◽  
Coffee Grounds ◽  
Twin Screw ◽  
Coffee Oil

The aim of this research was to prepare and characterize biocomposite films from poly(lactic acid) (PLA) with spent coffee grounds (SCG). PLA can be derived from renewable resources. The SCG component consists of cellulose, hemicellulose and coffee oil 10.98%. SCG can simultaneously act as plasticizer and filler in the composites that can enhance the mixing process. The PLA/SCG biocomposite films were processed by a twin-screw extruder and blow film extruder. They were prepared by using various SCG concentrations (0%, 5%, 7.5% and 10% of SCG). The Scanning Electron Microscopy (SEM) results showed that the PLA matrix with SCG was miscible and had the SCG was well good distributed. Elongation at break was increased, when the amount of SCG was increased, with the results of PLA and PLA/SCG 10% being 5.07% and 6.63% respectively, while hardness, brittleness and tensile strength decreased. UV-vis spectrophotometric measurement of PLA/SCG biocomposite films showed a considerable reduction in transmission of all UV wavelengths (UV-A, -B and -C) and visible light with increasing SCG content. Hence, in this research, SCG can be used as filler in PLA films in order to produce biodegradable films and developed as agricultural film products. The PLA/SCG biocomposite films have shown good properties and are environmentally friendly.

scholarly journals Utilization of Spent Coffee Grounds for Compost Production

2019 ◽  
Vol 8 (9S3) ◽  
pp. 908-910
Keyword(s):  
Side Effects ◽  
Moisture Content ◽  
Focal Point ◽  
Test System ◽  
Wood Chips ◽  
Spent Coffee Grounds ◽  
Fecal Matter ◽  
Saw Dust ◽  
Coffee Grounds

Espresso is one of the most basic agrarian things earth. The three principle trademark highlights of espresso are sharpness, smell and taste Precisely when espresso is evacuated in water, the vast majority of the hydrophobic mixes, including oils, lipids, triglycerides, and unsaturated fats stay in the grounds, as do insoluble starches ike cellulose and unmistakable unpalatable sugars. Setting up the soil with espresso waste is an incomprehensible strategy to utilize something that would by way or another wind up expendingroom in a landfillL Treating the sol espresso beans adds nitrogen to the fecal matter store. The Main focal point of the examination is to use the accomplished espresso powder with sol to make it continuously rich and to consider the test system of experienced espresso powder with different side effects like, saw dust, wood chips, soil, and so forth. The different parameters, for example, pH, temperature, Moisture content, CN degree, Phosphate, Sodium and Pottasium apparently studied manure

scholarly journals Improving the Mechanical Ductility and Toughness of Injection-molded Polylactide Pieces by the Dual Incorporation of Liquor Waste Derived Spent Coffee Grounds and Oligomers of Lactic Acid

2021 ◽  
Author(s):  
Enrique Terroba-Delicado ◽  
Stefano Fiori ◽  
Sergio Torres-Giner ◽  
Jaume Gomez-Caturla ◽  
Nestor Montanes ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Chemical Interaction ◽  
Extrusion Process ◽  
Green Composites ◽  
Green Composite ◽  
Spent Coffee Grounds ◽  
Reinforcing Fillers ◽  
Coffee Grounds ◽  
Coffee Oil ◽  
The Impact

Abstract This work puts the Circular Bioeconomy’s concept into action, originally valorizing residues from the beverage liquor coffee industry into reinforcing fillers for green composites of polylactide (PLA). The as-received spent coffee grains derived from liquor waste were first milled to obtain the so-called spent coffee grounds (SCGs), which were then incorporated at 20 wt.% into PLA by extrusion. With the aim of improving the compatibility between the biopolyester and the lignocellulosic particles, two oligomers of lactic acid (OLAs), namely OLA2 and OLA2mal, being the latter functionalized with maleic anhydride (MAH), were both added during the extrusion process at 10 wt.%. The resultant compounded pellets were finally shaped into pieces by injection molding for characterization. Results showed that, as opposite to most claims published in the literature of PLA composites based on lignocellulosic fillers derived from soluble coffee wastes, the incorporation of liquor waste derived SCGs increased the ductility of the pieces by nearly 280% due to their high coffee oil content. The incorporation of OLA2 and OLA2mal contributed to improve the impact strength of the pieces by approximately 6% and 12.6%, respectively. The higher performance of OLA2mal was ascribed to a reduction of crystallinity in the green composite due to the chemical interaction by the MAH groups. However, the incorporation of SCGs into PLA slighlty reduced the thermal stability and yielded a dark-to-brown color, whereas it also delayed the disintegration rate of the pieces in controlled compost soil. Therefore, the results attained herein open up novel opportunities for the development of green composites of PLA with higher ductility and toughness through the valorization of liquor coffee wastes.

scholarly journals Valorization of spent coffee grounds as the specialty material for dullness and aging of skin treatments

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Mayuree Kanlayavattanakul ◽  
Nattaya Lourith ◽  
Puxvadee Chaikul
Keyword(s):  
Linoleic Acid ◽  
Oil Quality ◽  
Cost Effective ◽  
Human Skin Fibroblast ◽  
Spent Coffee Grounds ◽  
Normal Human Skin ◽  
Coffee Beans ◽  
Coffee Grounds ◽  
Spent Coffee Ground ◽  
Coffee Oil

Abstract Background Coffee beans contain oil with health benefits from fatty acids. The unprocessed and processed coffee beans are mostly identical in coffee oil quality and are substantively supplied for certain industries. However, the cost-effective valorization of specialty ingredients from spent coffee grounds for cosmetics is sparely presented. Linoleic acid-rich spent coffee oil, as a specialty material for skin lightening and antiaging cosmetics, is objectively to be presented. Results Spent coffee oils were prepared by different methods. The most cost-effective material with a high extraction yield, linoleic acid content and unsaturated/saturated fatty acid (UFA/SFA) ratio (13.21  ±  0.25, 32.09% and 0.97) was modified. The modified oil was boosted in linoleic acid (77.20% or 140.57% improvement) and the UFA/SFA ratio (33.12). The physicochemical properties of the oil were applicable for cosmetics as per its safety profiles in B16F10 melanoma and normal human skin fibroblast cells. The oil significantly better inhibited cellular melanogenesis than kojic and linoleic acids (p  <  0.01), with prominent tyrosinase and TRP-2 inhibitions. The cellular antioxidant activity of the oil was comparable to those of ascorbic and linoleic acids. The collagen stimulating efficacy of the oil was significantly better than that of ascorbic but comparable to that of linoleic acid as indicated by the MMP-2 inhibitory activities (p  <  0.01 and p  <  0.001, respectively). Conclusions The oil is a specialty material for skin brightening and skin wrinkle reduction/skin elasticity improvement products. A successive circular bioeconomy of spent coffee ground waste in a more profitable cosmetic industry is indicated. Graphic abstract

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