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Agriculture and Food

Extending the Shelf Life of Produce with Melatonin-Packed Microneedles

Researchers developed a way to extend the shelf life of vegetables by injecting them with melatonin using biodegradable microneedles.

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The breakthrough technology developed by researchers from MIT and Singapore-MIT Alliance for Research and Technology (SMART) has been making waves in the agricultural industry. By using biodegradable silk microneedles to deliver precise amounts of melatonin into harvested plants, scientists have successfully extended the shelf life of produce by up to four days at room temperature and 10 days when refrigerated.

The researchers believe their system could offer an alternative or complement to refrigeration, addressing the global issue of post-harvest food waste. According to Marelli, associate professor of civil and environmental engineering at MIT, “Post-harvest waste is a huge issue. This problem is extremely important in emerging markets around Africa and Southeast Asia, where many crops are produced but can’t be maintained in the journey from farms to markets.”

The team used their microneedles to inject a fluorescent dye into pak choy plants to confirm that vasculature could spread the dye throughout the plant. They then compared the shelf life of regular pak choy plants and plants treated with melatonin, finding no difference between them.

However, when small patches of the melatonin-filled microneedles were applied to the bottom of pak choy plants by hand, they noticed significant improvements in the plants’ condition. At room temperature, the leaves remained green on day five, with weight loss and chlorophyll reduction slowing significantly compared to the untreated control group.

In refrigerated conditions, treated plants retained their saleable value until day 25. The researchers observed that melatonin improved stress response in plant after it’s been cut, thus extending its shelf life.

Marelli emphasized that for this technology to be widely adopted, they need to reach a performance versus cost threshold to justify its use. For instance, applying microneedle patches using tractors or autonomous drones could make the process more efficient and scalable.

The research team plans to study the effects of various hormones on different crops using their microneedle delivery technology. They aim to increase the impact this can have on the value and quality of crops by analyzing how they can modulate nutritional values, shape, texture, etc.

As this technology continues to evolve, it holds immense potential for reducing post-harvest food waste worldwide. With its ability to extend shelf life and improve stress response in plants, it has the power to save millions of dollars annually in agricultural losses.

Agriculture and Food

Standardizing Psychedelic Research: A Breakthrough in Understanding the True Potential of Mind-Altering Drugs

As psychedelics gain traction as potential treatments for mental health disorders, an international study stands to improve the rigor and reliability of clinical research.

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Standardizing Psychedelic Research: A Breakthrough in Understanding the True Potential of Mind-Altering Drugs

The use of psychedelics as potential treatments for mental health disorders has gained significant traction in recent years. However, a critical flaw in psychedelic clinical trials has hindered their progress – the failure to properly account for how a person’s mindset and surroundings influence the effects of these substances.

A group of international researchers from McGill University, Imperial College London, and the University of Exeter have tackled this issue by developing a set of guidelines to standardize psychedelic clinical trials. The Reporting of Setting in Psychedelic Clinical Trials (ReSPCT) guidelines are a 30-item checklist that represents the first global agreement on which psychosocial factors have the greatest impact on a psychedelic experience.

“For decades, we’ve known that psychedelics don’t work in isolation,” said co-lead author Chloé Pronovost-Morgan. “The person’s mindset, the therapy room, even the music playing all influence outcomes.” This approach challenges the traditional way psychoactive drugs are typically studied, where scientists try to control or eliminate outside variables to isolate a drug’s effects.

These guidelines recognize that context is crucial and should be studied directly. By offering a standard framework for evaluating and reporting these variables, the ReSPCT guidelines aim to make trial outcomes more consistent and comparable across studies.

Having clear guidelines for contextual considerations is essential to understand the effects of psychedelics and how they work differently from other psychiatric medications,” said co-senior author Leor Roseman. “Our guidelines will also help in replicating results and understanding the true therapeutic potential of psychedelics.”

The lack of standards has had consequences beyond the research lab, Pronovost-Morgan explained. The U.S. Food and Drug Administration recently rejected MDMA-assisted therapy for post-traumatic stress disorder, citing inconsistent reporting across trials as a key reason for the decision.

“There is immense public interest in psychedelic therapies, particularly for individuals suffering from debilitating mental health conditions like PTSD, depression and anxiety, which have not responded to existing treatments,” said co-senior author Kyle Greenway. “Our guidelines offer a new gold standard for psychedelic research, helping bring these treatments to those who need them most.”

The research team is organizing a three-day workshop in October, funded by McGill’s Healthy Brains, Healthy Lives initiative, where leading experts in psychedelics and neuroscience will discuss how the guidelines can be integrated into research and clinical practice.

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Agriculture and Food

Harnessing the Power of Solar Arrays for Grassland Conservation

New research shows that the presence of solar panels in Colorado’s grasslands may reduce water stress, improve soil moisture levels and — particularly during dry years — increase plant growth by about 20% or more compared to open fields.

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The article highlights groundbreaking research conducted by Colorado State University and Cornell University that demonstrates how solar arrays can aid grasslands during drought. The study, published in Environmental Research Letters, reveals that photovoltaic (PV) arrays located in grassland ecosystems can reduce water stress, improve soil moisture levels, and increase plant growth by up to 20% or more compared to open fields.

Researchers found that plants beneath and around the solar systems benefited from partial shading and additional water that collects on panels. During a dry year, grass growth on the east side of panels was significantly higher than in neighboring open sites. This positive response was reduced during wet and normal years but still demonstrated the potential benefits of co-locating solar power infrastructure with ecosystem preservation.

The study’s lead author, Matthew Sturchio, emphasizes that small changes in array design, configuration, and management could unlock untapped benefits, particularly those related to water use. The researchers are now exploring ways to optimize solar array placement and design to maximize the benefits for grassland ecosystems.

Alan Knapp, a University Distinguished Professor at CSU, notes that their research has significant implications for restoring grassland ecosystems in arid and semi-arid regions. He suggests that building solar facilities in areas where they can benefit from strategic placement is an obvious win-win. The team plans to investigate the functional underpinnings of this idea at a newly constructed research facility.

This pioneering study showcases the potential for solar arrays to support grassland conservation, especially during drought-prone seasons. As researchers continue to explore and refine this concept, it may provide valuable insights into creating more resilient and sustainable ecosystems for generations to come.

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Agriculture and Food

“Sowing Seeds for a Sustainable Future: How Living Libraries Can Help Adapt Food Crops to Climate Change”

Scientists have pioneered a new way to breed climate-resilient crops faster by combining plant genebank data with climate and DNA analysis. The method, tested on sorghum, could speed up global efforts to secure food supplies in a changing climate.

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The world’s food supply is facing unprecedented challenges due to Earth’s rapidly changing climate. University of Hawai’i scientists are among a team of researchers who have discovered an innovative way to help adapt food crops around the world to these new conditions. A recent study published in Nature Climate Change reveals how plant genebanks, also known as “living libraries,” can speed up the process of breeding crops better suited for climate change.

These living libraries store seeds and other genetic material from millions of genetically diverse plants worldwide. They provide a vital resource for plant breeders working to develop new crop varieties that have traits such as drought resistance, disease tolerance, or improved yields. The researchers used sorghum, a grain grown for food, fuel, and livestock feed, to test a new method called environmental genomic selection.

This approach combines DNA data with climate information to predict which plants are best suited for future conditions. It can be applied to any crop that has the right data, including sorghum, barley, cannabis, pepper, and dozens of other crops. By using a smaller, diverse “mini-core” group to forecast how crops will perform in different environments, scientists can quickly select the best parents for new, climate-resilient varieties.

“This method will help us keep pace with the hotter temperatures and increased risk of flooding from Earth’s changing climate and help develop new varieties to ensure food security,” said co-author Michael Kantar of the UH Manoa College of Tropical Agriculture and Human Resilience (CTAHR).

The researchers also discovered that nations with high sorghum use may need genetic resources from other countries to effectively adapt to climate change. This highlights the value of global teamwork in securing the world’s food supply.

In conclusion, living libraries can play a crucial role in helping us adapt food crops to climate change. By leveraging these genetic resources and innovative breeding techniques, we can develop more resilient crop varieties that will ensure global food security for generations to come.

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