Vietnamese fresh spring rolls were found to have compounds that kill harmful bacteria in food. Photo: RMIT. Professors and researchers at RMIT University (Australia) have shown how to use this natural bacteria-killing compound to keep food fresh for longer. Weapons to kill bacteria A team of researchers from RMIT University was inspired to learn about the potential, antibacterial properties of Nem chua after traveling to Vietnam. They were surprised to see people who ate this raw meat without getting sick even in hot and humid climates. The research team, led by Professor Andrew Smith (Griffith University, Australia) and Dr Bee May, has discovered a new type of germicidal compound in spring rolls. That’s Plantacyclin B21AG, a group of compounds made by bacteria to kill other rival strains of bacteria. This compound is said to be much more potent than previously created man-made preservatives as food preservatives. The harmful bacteria Listera (green) dies after being exposed to the compound in Vietnamese spring rolls, Plantacyclin B21AG. Plantacyclin B21AG can survive at 90 degrees Celsius for 20 minutes and remains stable at high or low pH levels. This compound has the ability to kill a wide range of pathogenic organisms commonly found in food, Listeria, potentially life-threatening, persisting in the refrigerator or even when frozen. Study co-leader Professor Oliver Jones said there was a growing need for natural alternatives to artificial food preservatives. The reason for this is the change in people’s consumption habits. Safe for humans Professor John, associate dean of the Department of Food Science and Technology at RMIT University, said: “Scientists have known this natural bacteria-killing compound for many years. But the challenge was to manufacture it. obtain them in quantities large enough for use in the food industry”. “The structural compound of Nem chua is colorless, odorless, tasteless and very tough. Through this new study, we have identified suitable growth conditions that allow us to produce this compound in large quantities. large, potentially industrial scale. I hope this is an effective, safe and natural solution to both waste and potentially food-borne diseases,” said Professor John. Australian professors and doctors were surprised that spring rolls made from raw meat are not harmful to people. Photo: Vietnamdiscovery. Dr Elvina Parlindungan, who completed the study, said: “Using natural bacteria themselves as effective preservatives in food, we are turning bacteria’s toxic weapons against them. This smart solution from nature will solve all the major challenges in food technology. In the future, these compounds could also be useful as antibiotics in medicine.” Following the discovery, researchers at RMIT University began testing methods for purifying the compound and are planning to include it in experimental products. They look forward to working with many potential industry partners to further develop food technology. This work was supported by a PhD scholarship from the Indonesian Education Foundation (Indonesian Ministry of Finance), awarded to Dr. Parlindungan. Instructions for making fresh melted cheese cake Freshly melted cheesecake can be easily made at home. Housewives can show off their baking skills with familiar ingredients.

The sugarcane beetle species mainly include the black scarab, the brown beetle and the large brown hairy beetle, which often arise and cause strong damage in sandy soil, riverbank soil, soil with light mechanical composition, or on specialized cultivation areas, growing sugarcane for many years, not rotating crops with other crops. NASU technicians check for insects entering the lamp trap. Photo: NASU. The life cycle of these beetles lasts from 365 to 720 days, going through 4 stages: egg, larva (worm), pupa and adult. Over the years, Nghe An Sugarcane Company Limited (NASU) has researched and applied integrated measures to effectively manage sugarcane beetles in the company’s raw sugarcane areas. This is the result that NASU has studied the management of sugarcane beetles in many countries such as China, Thailand, Indonesia… to apply on NASU’s sugarcane material area. Mr. Nguyen Hoang Son Phong, engineer of NASU said that sugarcane field was damaged by beetle larvae, yield decreased by 13-54%, sugar decreased from 11-57%. The original cane is more severely damaged by beetles than silk cane. Larvae (larvae) hatch from eggs, live in the soil for an average of 240 – 480 days (larvae of the brown hairy beetle are larger, longer than the beetle species) before transitioning to the pupa and adult stage. During the development cycle, larvae are active in the ground, age 1 and 2 in addition to eating cane roots, also eat organic matter, humus, decayed organic fertilizer or bagasse. Light traps are quite simple but effective in killing beetles applied in the cane material area of ​​NASU. Photo: NASU. From the end of the age of 2, the larvae only feed on the roots and underground stems of sugarcane. The 3-year-old larvae have a long sexual development time and cause the most damage to sugarcane, making sugarcane unable to grow, withering, drying and dying, leading to a decrease in sugarcane and sugar yield. The more damage the harvest stage, the more obvious. When the 3-year-old larvae are full, they begin to build cocoons out of soil and pupate to stay in the cocoon. If the weather conditions are favorable, after about 20 days, the pupae will turn into an adult, break the cocoon and crawl to the ground. Unfavorable weather conditions, especially low soil moisture and low temperature, will prolong the pupal development time. This extended period, called the hibernation period, can last up to 4 months. Effective management of beetles According to the research as well as the process applied effectively at NASU, control beetle larvae by plowing the soil thoroughly before planting sugarcane, collecting larvae and spreading the granular insecticide Patox 4GR, with the amount of 40 kg/ha in rows when planting sugarcane. Beetles trapped in nets. Photo: NASU. However, the method of spraying granular pesticides into the soil, in addition to killing larvae, will destroy beneficial microorganisms and insects in the soil, affecting the soil environment. The adults of these sugarcane beetles tend to be strong with light, fly out to mate from March to May, after showers with an amount of over 20mm. This is the best time to kill adults, limit egg laying, and reduce later harm caused by larvae. Mr. Hoang Quoc Tiem, a long-time sugarcane grower in Dua village, Nghia Yen commune (Nghia Dan, Nghe An) said that in the spring crop of 2021, in addition to killing larvae when growing sugarcane, NASU has implemented additional measures to destroy them. maturity such as using lamp traps, casting nets, and making traps in the field. The light trap is designed to be able to install light bulbs from the grid, battery lights or solar power systems. Traps are made by taking advantage of plastic containers, above are lights, below are placed water, add diesel oil to prevent the adults from moving out of the trap. In the middle of the light trap, install 2 corrugated iron sheets of size 40 cm x 60 cm, perpendicular to each other. As adults, beetles are attracted to light, flying into traps will collide with corrugated iron and fall into the water. After the rainy nights of early summer, each light trap catches 250-300 brown beetle adults, 40-50 black beetle adults, and 20-30 large brown-haired clipping adults and lots of adults of other sugarcane borers. The “product” obtained after a night of light traps includes many different species of beetles and borers… Photo: NASU. In addition, on the field, a fishing net is installed, the size of the net is 1cm x 1cm, and the adults move hundreds of fish of all kinds after every night it rains. In the sugarcane field, from 50 – 100m, dig pit traps, measuring 30 cm deep x 60 cm long x 60 cm wide, below the manure and by-products, which are the preferred food of adults, mixed with drugs. Low-odor insecticide is Goldra so that when adults eat it, it will be destroyed. According to the research results of scientists, the female beetle species can lay an average of 229-328 eggs, the lowest hatching rate from eggs to larvae is 70%. With the method of killing adults from light traps and netting in the field, it will limit a lot of harm caused by larvae to sugarcane … Mr. Phan Van Toan, Director of Agricultural Extension of Nghe An Sugar Co., Ltd. said that with the above management method, the rate of damage of beetles on both silk and sugarcane fields is reduced. This is the money for the company to expand the model on the raw material area in the coming years to stabilize the material area and improve production efficiency for farmers.

Russia has developed an “impossible” range electronic warfare system. Illustration. Russian Deputy Prime Minister Yuri Borisov emphasized that two of Russia’s newest electronic suppression and electronic warfare complexes – “Triada” and “Palantin”, are capable of completely intercepting enemy communications, hitting electronic weapons systems and even intercept spacecraft located at an altitude of several hundred kilometers from the earth’s surface. Among mobile electronic suppression systems, the Krasukha family EW systems receive special attention, capable of suppressing the enemy’s communications equipment and his weapons at an up range. Up to 300 km, however, at present the ability of Russian weapons so that the Russian army can easily conduct suppression even after the front lines of the enemy.

The US raised the range of the S-400 killer to three times.

After improving the range of this new missile to reach about 1,600 km, which is about three times more than the current PrSM missile.

Currently, the US military continues to order old Tomahawk missiles and SM-6 supersonic missiles as temporary medium-range weapons. However, in the long run, they will replace this missile with a new generation missile, including the upgraded PrSM version.

The US military has researched and concluded that they need a medium-range missile with a range of 500 to 2,000 km, such a missile should be in service as soon as possible, at least by 2023.

General John Rafferty, who is in charge of upgrading the US’s long-range precision firepower, said that in the future these weapons will change everything in both Europe and the Pacific. He also did not hesitate to call the PrSM missile a killer capable of destroying Russia’s S-400 air defense system.

Before that, in March 2017, the US military began conducting the PrSM program. The goal of this program is to create a new generation of high-precision missiles with an official range of 60 to 499 kilometers to replace the existing US Lockheed Martin MGM-140 ATACMS tactical line of tactical missiles. .

Like the ATACMS, the PrSM missile is also launched from the standard launchers of the US M270A1 MLRS and M142 HIMARS missile systems. However, unlike ATACMS, the launcher M270A1 MLRS can carry four PrSM missiles (this pedestal can only carry two ATACMS) and the M142 HIMARS launcher can carry two PrSMs. ).

General John Rafferty said that the US military is currently researching and has committed to create a version of the PrSM capable of firing “medium range” that is about 1,500 to 2,000 km. The general also admitted that the range of this new missile violates the INF agreement, but the advantage is that the US has withdrawn from the treaty.

General Rafferty also revealed that this year, there will be four launches of the PrSM long-range precision attack missile. These tests will include a range of 400 km at the White Sands missile test site in New Mexico in May, in August the full-range missile launch will take place at Vandenberg airbase in California and These two long-range missile launches will take place in the fall.