scholarly journals The evaluation of extraction of some nut oils using screw pressing

10.5219/1379 ◽  
2020 ◽  
Vol 14 ◽  
pp. 847-853
Author(s):  
Vladimí­r Mašán ◽  
Lukáš Vaštík ◽  
Patrik Burg ◽  
Radek Sotolář ◽  
Miroslav Macák

Today's consumers prefer low-sugar, low-calorie, natural, and so-called safe products. These trends are also reflected in nuts products and groceries. Globally, the European Union is the largest importing market of edible nuts. Considering the increasing demand for new sources of food, the importance becomes the efficiency of production. This study evaluates the influence of rotation speed in the extraction of almond nut, walnut, hazelnut, cashew nut, and peanut oils using screw pressing. In tested samples, the oil content was on average between 69.14 ±0.79% (walnut) and 46.7 ±1.45% (peanut). From the pressing of oils, it is seen that the oil yield decreased when pressing speed increased (from 30 rpm to 90 rpm, for example in walnut from 0.36 kg to 0.16 kg.h-1) and that the oil sediment yield increased when speed increased (for example in hazelnut nut from 8.51% to 17.37%). The highest amount of oil yields had hazelnut with 3.03 ±0.05 kg.h-1, then walnut with 2.05 ±0.02 kg.h-1, almond nut with 2.34 ±0.05 kg.h-1, peanut with 2.15 ±0.01 kg.h-1, and finally cashew nut with 2.07 ±0.03 kg.h-1.

2021 ◽  
Author(s):  
Sebastian Kahlert ◽  
Catharina Bening

Abstract Scientific analysis and media coverage of rampant plastic pollution has taken a toll on the material’s reputation in recent years, fueling talk of a “plastic crisis.” Brand owners have made ambitious pledges to overcome this crisis—but can voluntary commitments turn the tide? In this paper, we analyze the current flow of polyethylene terephthalate (PET) from production to recycling in the European Union (EU). We show that the pledged volume for recycled PET to be used in the EU in 2025 amounts to 2.066m tons, requiring the annual recycling growth rate to double in the next years compared to 2014–2018. Our results indicate that even widespread adoption of deposit return systems for bottles will not suffice, especially when increasing demand from other industries drives the price above the packaging producers’ willingness to pay. To realize the pledges, substantial investments and a regulatory framework for the targeted and sensible use of PET recyclate are necessary.


Author(s):  
Anna Elomäki

Abstract The article analyzes (i) how the increasing demand for empirical evidence about the economic impacts of gender equality transforms expert knowledge about gender equality in the European Union (EU) and (ii) the implications of these transformations. The article argues that the much-debated discursive economization of gender equality in the EU context is underpinned by the economization of expert knowledge about gender equality—the increasing reliance on mainstream economics to support gender equality claims. This has increased the influence of gender-biased economics knowledge and its modes of knowledge production in EU gender equality policy.


2021 ◽  
Vol 11 (3) ◽  
pp. 78-84
Author(s):  
Silvia Demčáková ◽  
Hedviga Horváthová

With the increasing demand for electricity due to the increasing economic boom, there is an excessive production of emissions that natural processes cannot cope with. Fortunately, there are various technological solutions for capturing harmful substances from produced emissions. However, the European Union aims to prevent the formation of emissions in the process of industrial production itself. In order to achieve this, it is necessary to reconcile the interests of individual European Union member states by the implementation of regulations into laws, to monitor short-term and long-term changes in air quality, and also to put into practice increasingly effective methods of capturing emissions from the air. This paper offers an example of thermodynamic calculation of quantities by appropriate software in the process of recycling waste from the metallurgical industry and possibilities of technological improvement in emission reduction.


1997 ◽  
Vol 46 (2) ◽  
Author(s):  
Markus Fredebeul-Krein

AbstractThe article raises the question of whether the European Union should intervene in the standardization process of the telecommunication sector. By analyzing the standardization activities of the EU which have been undertaken so far, it is shown that they have been an important contribution to the creation of a single market in telecommunications. However, they are also increasingly used as an instrument for industrial policy. In the future the need for an interventionist role of the EU in the standardization process will decrease. This is due to rapid technological innovations and increasing demand for user-specific applications.


Author(s):  
Herman Lelieveldt ◽  
Sebastiaan Princen

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