New use of grapes. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

New uses for grapes

25.05.2018

French scientists from the University of Clermont have proposed a unique method by which it is possible to improve the quality of plastic in an organic way, making environmentally friendly plastic. Experts used Pinot noir grape waste - leaves, twigs and seeds, placing them in a microwave oven, where the ingredients were dried for 20 minutes.

In production, during the manufacture of plastic, a special stabilizer containing antioxidants is added so that the product does not break down. Scientists explain that photooxidation can be avoided thanks to light stabilizers, and antioxidants are necessary to prevent thermal-oxidative processes.

Grapes contain chemical compounds called polyphenols. They serve as natural antioxidants that prevent chemical processes during which the material is destroyed due to the fact that the molecule loses its electrons.

As a result of drying grape waste in a microwave oven, the scientists extracted a powder that has a light brown color, which contained polyphenols. After that, it was combined with molten polypropylene, which is usually used in the process of making disposable or reusable tableware.

The researchers tested the finished material. The plastic was tested for durability: using ultraviolet rays, strong air currents were directed, and they were also sent to an oven with 80 and 90-degree temperatures.

The experts noted that the plastic material using grape polyphenols was able to last 27 hours in the light aging chamber. While plastic without a stabilizer lasted 2 hours less.

<< Back: Bicycle energy meter 25.05.2018

>> Forward: 1TB QLC NAND Flash 24.05.2018

Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

Mosquitoes will stop attacking people 13.06.2013

For the first time, scientists have managed to create genetically modified mosquitoes that react differently than their "natural" relatives to human odors and to the repellent diethyltoluamide (DEET). Scientists from the Howard Hughes Medical Institute announced their discovery.

Researchers have not only genetically altered mosquitoes, but also learned why these insects are drawn to people. But most importantly, scientists plan to "wean" mosquitoes to choose people as a priority victim and thereby minimize human infection with diseases such as yellow fever and dengue fever.

The orco gene, which was deleted from flies 10 years ago, helped to deal with the olfactory addictions of mosquitoes, and the flies lost their olfactory abilities. In the case of yellow fever mosquitoes (Aedes aegypti), scientists acted rather at random, and were pleasantly surprised when they learned that after the removal of this gene, mosquitoes also stopped reaching out to humans, preferring the laboratory guinea pig.

Next, the team tested how mosquitoes with orco mutations reacted to the repellant. To do this, a repellent (diethyltoluamide) was applied to one hand of a person, and the other was left untreated. Mosquitoes with a modified gene landed on both hands equally often, without smelling the repellent. However, when they were already landing on the arm, they quickly flew away from the part of the body that was covered with the repellent. This proves that mosquitoes have two different mechanisms for odor perception. One gene is responsible for the perception of smells that are in the air, and the other comes into action as soon as the insect touches the skin, and makes a decision whether to bite or not.

The new insights from the Howard Hughes Medical Institute will help scientists understand how insects react to current insect repellents, as well as what the next generation of repellents should be like. And it cannot be ruled out that soon it will be enough to apply a special repellent to the skin and boldly go to the habitats of the yellow fever mosquito without fear of contracting yellow fever or dengue fever. In addition, the evening on the shore of a summer lake will become much more pleasant.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews