One of China’s largest agricultural drone companies is helping to overhaul the rice-farming industry.
XAG recently launched a rice-seeding demonstration of seeding via drone at Happy Farms, an agricultural park in Guangdong province.
Category: food – Page 204
Whereas textbooks depict metabolism in perfect homeostasis, disturbances occur in real life. One particularly relevant disturbance, caused by excess food and alcohol consumption and exacerbated by genetics, is reductive stress. New work by Goodman et al. identifies a biomarker of reductive stress and uses a gene therapy solution in mice. This work suggests how exercise and an accessible nutritional technology can synergistically increase catabolism and relieve reductive stress.
“It’s not just about the smell,” said Adrian Cheok, one of the scientists behind the experiments. “It is part of a whole, integrated virtual reality or augmented reality. So, for example, you could have a virtual dinner with your friend through the internet. You can see them in 3D and also share a glass of wine together.”
In real life, odors are transmitted when airborne molecules waft into the nose, prompting specialized nerve cells in the upper airway to fire off impulses to the brain. In the recent experiments, performed on 31 test subjects at the Imagineering Institute in the Malaysian city of Nusajaya, researchers used electrodes in the nostrils to deliver weak electrical currents above and behind the nostrils, where these neurons are found.
The researchers were able to evoke 10 different virtual odors, including fruity, woody and minty.
A new “all-plant” drink bottle is underway at a Netherlands biochemicals company. These bottles are made from sustainable crops and decompose within a year.
The bottle is made from plant sugars instead of traditional fossil fuels. Avantium is the company behind the bottle. They have already found support from beer company Carlsberg, who plans to sell a plant-plastic lined cardboard bottle in future beverage releases. Coca-Cola and Danone have also backed the product.
Avantium’s chief executive, Tom van Aken told the Guardian that the plan should be finalized by the end of the year, with the bottles hitting supermarket shelves by 2023. “This plastic has very attractive sustainability credentials because it uses no fossil fuels, and can be recycled – but would also degrade in nature much faster than normal plastics do,” says Van Aken.
Hoppy beers do that to me. This beer was different. The water used for the brew came not from a river, a reservoir, or even a well. Instead, the water was sourced from a wastewater treatment plant located along the South Platte River. This simple fact didn’t bother me at all.
To be clear, I’m not a risk taker. Never skydived. Never paddled down Class V rapids. Never swallowed goldfish on a dare. But from what I’ve learned about purification processes for reclaimed water, drinking this limited-edition beer was eminently safe. The pilsner, blonde and translucent, like a Coors, looked and tasted like any number of beers made from water freshly obtained from creeks and rivers tumbling from Colorado’s mountain peaks. As for the strawberry-kiwi wheat beer ordered by my companion, I would have nothing of it. “That’s not beer,” I harrumphed, “that’s a fruit bowl. Undrinkable.”
I was at Declaration Brewing Co., located in Denver’s Overland neighborhood. The brewery and also a winery, InVINtions, located in Greenwood Village, were part of a regional effort. Water for the one-time specialty beverages produced by both came from the PureWater Colorado Demonstration Project. In the demonstration that was conducted in spring of 2018, water providers, engineering companies and water reuse advocates collaborated to showcase direct potable reuse treatment technologies. The water was treated using five different processes until it met federal and state drinking water standards, suitable for human consumption.
Circa 2018
E-noses come in a variety of architectures, but most rely exclusively on chemical sensors, such as metal oxides or conducting polymers. The TruffleBot goes a step further: A 3.5-inch-by-2-inch circuit board that sits atop a Raspberry Pi contains eight pairs of sensors in four rows of two. Each sensor pair includes a chemical sensor to detect vapors and a mechanical sensor (a digital barometer) to measure air pressure and temperature.
Then comes the sniffing bit: Odor samples are pushed across these sensors by small air pumps that can be programmed to take up puffs of air in a pattern. “When animals want to smell something, they don’t just passively expose themselves to the chemical. They’re actively sniffing for it—sampling the air and moving around—so the signals that are being received are not static,” says Rosenstein.
In an analysis of nine odors, including those from cider vinegar, lime juice, beer, wine, and vodka (and using ambient air as a control), the team found that chemical sensors alone accurately identified an odor about 80 percent of the time. The addition of sniffing improved accuracy to 90 percent. Throw in the pressure and temperature readings and the e-nose recognized an odor 95 percent of the time.
No matter how they may make you feel, licking your gadgets and electronics is never recommended. Unless you’re a researcher from Meiji University in Japan who’s invented what’s being described as a taste display that can artificially recreate any flavor by triggering the five different tastes on a user’s tongue.
A gene therapy trial performed on mice may foreshadow yet another way to hack fitness. In a study done by a team at Washington University in St. Louis’ medical school, mice quickly built muscle mass and reduced obesity after receiving the therapy, even while eating a diet high in fat and not exercising. The results were published last week in a paper in Science Advances.
The gene targeted was FST, which is responsible for making a protein called follistatin. In humans and most other mammals, follistatin helps grow muscle and control metabolism by blocking a protein called myostatin, which acts to restrain muscle growth and ensure muscles don’t get too big.
The researchers injected eight-week-old mice with a virus carrying a healthy FST gene (gene therapy involves adding healthy copies of a gene to cells, usually using a virus as a deliveryman).
Over a period of 18 weeks, or about 4 months, the team observed that the muscle mass of the treated mice more than doubled, as did their strength level. They also experienced reduced damage related to osteoarthritis, less inflammation in their joints, and had healthier hearts and blood vessels than mice that didn’t receive the gene therapy —even though all the mice ate the same high-fat diet and did the same amount of exercise.
Circa 2018
CRISPR-Cas adaptive immune systems of bacteria and archaea have catapulted into the scientific spotlight as genome editing tools. To aid researchers in the field, we have developed an automated pipeline, named CRISPRdisco (CRISPR discovery), to identify CRISPR repeats and cas genes in genome assemblies, determine type and subtype, and describe system completeness. All six major types and 23 currently recognized subtypes and novel putative V-U types are detected. Here, we use the pipeline to identify and classify putative CRISPR-Cas systems in 2,777 complete genomes from the NCBI RefSeq database. This allows comparison to previous publications and investigation of the occurrence and size of CRISPR-Cas systems. Software available at http://github.com/crisprlab/CRISPRdisco provides reproducible, standardized, accessible, transparent, and high-throughput analysis methods available to all researchers in and beyond the CRISPR-Cas research community. This tool opens new avenues to enable classification within a complex nomenclature and provides analytical methods in a field that has evolved rapidly.
CRISPR-Cas* bacterial and archaeal immune systems remain of high interest across many domains of the life sciences, including food science, molecular biology, prokaryotic evolution, and as a technology from pharma to next-generation crops.1–4 The unifying interest in CRISPR is the tremendous wealth of applications this technology affords. While application and tool development using a handful of characterized CRISPR-Cas systems has exploded, the annotation and discovery of systems remains an ongoing challenge for microbiologists and bioinformaticians to solve. The ability to identify CRISPR-Cas systems can benefit the greater scientific community, from microbiologists attempting to learn about adaptive immunity in prokaryotes, to molecular biologists interested in harnessing the nucleic acid-targeting functions of various Cas proteins.