coffee oil
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Author(s):  
Oscar Lombo Vidal ◽  
Suely Pereira Freitas ◽  
Humberto Ribeiro Bizzo ◽  
Mariana Simões Larraz Ferreira ◽  
Claudia Moraes de Rezende

2021 ◽  
pp. 116-177
Author(s):  
Michael Niblett

This article speaks of a literary comparativism provided by the environment-making dynamics of commodity frontiers. How is world-literature imbricated in these movements? How do texts mediate the logic of commodity frontiers and how might this mediation be differently inflected by the specific political ecologies of sugar, coffee, oil, or rubber? To approach literature from this angle clearly resonates with Patricia Yaeger’s call to attend to the energy resources that make texts possible (2011). By responding to this call through the optic of the commodity frontier, I seek to underscore the necessity of understanding those resources in terms of the systemic logic and structural relations of capitalism as a world-ecology.


2021 ◽  
Author(s):  
Enrique Terroba-Delicado ◽  
Stefano Fiori ◽  
Sergio Torres-Giner ◽  
Jaume Gomez-Caturla ◽  
Nestor Montanes ◽  
...  

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.


Author(s):  
Mayuree Kanlayavattanakul ◽  
Nattaya Lourith ◽  
Puxvadee Chaikul

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


2021 ◽  
Vol 9 (9) ◽  
pp. 1848
Author(s):  
Martin Szotkowski ◽  
Jiří Holub ◽  
Samuel Šimanský ◽  
Klára Hubačová ◽  
Dagmar Hladká ◽  
...  

One of the most addressed topics today is the transfer from a linear model of economics to a model of circular economics. It is a discipline that seeks to eliminate waste produced by various industries. The food industry generates huge amounts of waste worldwide, particularly the coffee industry, and related industries produce millions of tons of waste a year. These wastes have potential utility in biotechnology, and in the production of energy, fuels, fertilizers and nutrients, using green techniques such as anaerobic digestion, co-digestion, composting, enzymatic action, and ultrasonic and hydrothermal carbonization. This work is focused on the biotechnological use of processed spent coffee grounds (SCG) and waste fat/oil materials by some Sporidiobolus sp. carotenogenic yeasts in the model of circular economics. The results show that selected yeast strains are able to grow on SCG hydrolysate and are resistant to antimicrobial compounds present in media. The most productive strain Sporidiobolus pararoseus CCY19-9-6 was chosen for bioreactor cultivation in media with a mixture of coffee lignocellulose fraction and some fat wastes. Sporidiobolus pararoseus CCY19-9-6 was able to produce more than 22 g/L of biomass in mixture of SCG hydrolysate and both coffee oil and frying oil. The combined waste substrates induced the production of lipidic metabolites, whereby the production of carotenoids exceeded 5 mg/g of dry biomass. On media with coffee oil, this strain produced high amounts of ubiquinone (8.265 ± 1.648 mg/g) and ergosterol (13.485 ± 1.275 mg/g). Overall, the results prove that a combination of waste substrates is a promising option for the production of carotenoid- and lipid-enriched yeast biomass.


2021 ◽  
Vol 7 (8) ◽  
pp. 83457-83466
Author(s):  
Vithoria Gauglitz Tanaka ◽  
Henrique Larocca Carbonar ◽  
Luana Cerri Gabriel ◽  
Aline Coqueiro ◽  
Priscilla dos Santos Gaschi Leite ◽  
...  

Author(s):  
Adalton Raga ◽  
Sara Braga e Silva ◽  
Ester Marques de Sousa ◽  
Nilson Borlina Maia

The aim of this study was to evaluate the adulticidal effects of green coffee oil (GCO) and roasted coffee oil (RCO) on two species of fruit flies (Tephritidae) include Ceratitis capitata (Wiedemann) and Anastrepha fraterculus (Wiedemann). Adult flies of both species were exposed to GCO and RCO at 2%, 3%, and 4% dilutions in water under Potter spray tower. In general, exposure to GCO and RCO at the three dilutions resulted in higher numbers of dead adults of both species compared to the control populations. The mortalities increased substantially between 60–90 minutes after initial exposure. The 2% GCO dilution reached a maximum of 77.0% corrected mortality of A. fraterculus at 360 minutes. In general, the toxic effect of coffee oils occurred more rapidly in C. capitata than in A. fraterculus. GCO (2% and 3%) and RCO (2%) showed promising results for fruit fly management.


Author(s):  
Rodolfo Campos Zanin ◽  
Samo Smrke ◽  
Chahan Yeretzian ◽  
Louise Emy Kurozawa ◽  
Fabio Yamashita

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