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Agriculture and Food

Targeted Fiber Diets: A New Approach to Boosting Health

Food scientists have reclassified dietary fibers — beyond just soluble and insoluble — to better guide nutritional decisions and drive targeted health food products.

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The Australian food science community has made a significant breakthrough by reclassifying dietary fibers to better guide nutritional decisions and drive targeted health food products. This new approach recognizes that different types of fibers have distinct effects on the body, rather than simply being categorized as soluble or insoluble.

Dietary fibers in fruits, vegetables, beans, and whole grains are essential for human health, playing a crucial role in digestion, weight management, blood sugar control, heart health, and cancer prevention. However, consumer advice on how to use these fibers effectively for specific benefits has been lacking.

Professor Raj Eri from RMIT University emphasizes that just like different medicines target different conditions, various types of fibers have unique properties and effects on the body. For example, apples and bananas are both rich in dietary fiber but contain different types of fibers that work differently.

A new study published in Food Research International proposes a more nuanced classification system for dietary fibers based on five key features: backbone structure, water-holding capacity, structural charge, fiber matrix, and fermentation rate. This approach is designed to provide a more accurate understanding of each fiber’s health impacts.

Study lead author Christo Opperman explains that by starting with the key active features of fiber, this “bottom-up” approach allows for a more tailored understanding of how fibers interact with the body. For instance, if you want to promote colonic health, you can identify a fiber’s properties and determine its effectiveness in achieving that outcome.

The RMIT team has studied 20 different types of fibers and their interactions with the microbiome in the gut. This research has led to a greater understanding of how specific fibers can be used to achieve desired health outcomes, rather than simply relying on general guidelines.

The importance of fiber in the diet cannot be overstated, as it is one of the most critical nutrients for overall well-being. However, many populations, including those in Europe and the USA, are deficient in fiber intake. The recommended daily intake is 28-42 grams per day, but Americans average only 12-14 grams per day, while Europeans get around 18-24 grams per day.

The current classification system for dietary fibers has been criticized as simplistic, grouping fibers into soluble and insoluble categories without fully capturing the diverse structures and mechanisms through which they influence human physiology. The new framework proposed by the RMIT team aims to address this gap and provide a more accurate understanding of how different types of fibers can be used to achieve specific health benefits.

The researchers are now planning to investigate how a specific type of fiber modulates the microbiota and how this knowledge can be utilized for specific health applications. This research has significant implications for the development of targeted health food products and personalized nutrition recommendations.

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Less Intensive Farming Works Best for Agricultural Soil

The less intensively you manage the soil, the better the soil can function. Such as not plowing as often or using more grass-clover mixtures as cover crops. Surprisingly, it applies to both conventional and organic farming.

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The less intensively you manage the soil, the better it can function. This is the conclusion from a research team led by the Netherlands Institute of Ecology (NIOO-KNAW). The surprising finding applies to both conventional and organic farming. These important insights for making agriculture more sustainable were published in the scientific journal Science today.

One of the biggest challenges facing agriculture is producing enough food without compromising the soil. Healthy soil has many functions, known as multifunctionality, which must be preserved for sustainable agriculture. A multifunctional soil is essential for sustainable food production, as plants get their nutrients from it. Soil also plays indispensable roles in water storage, climate change mitigation, and disease suppression.

Research on farms across the Netherlands shows that the intensity of tillage determines whether the soil can retain all its functions. Interestingly, the difference between conventional and organic farming has less influence. In both types of agricultural systems, a lot of variation is found in soil tillage and management.

The good news is that conventional agriculture, which makes up most of farms, has a lot to gain from adopting less intensive practices. On all farms, including organic ones, it’s essential not to cultivate the soil too intensively. For example, ploughing less often can be beneficial. Inverting the soil during ploughing is a significant disruption for soil life.

Not only should farmers plough less frequently, but they should also make more use of mixtures of grasses and plants from the bean family, such as clovers. These can be alternated with growing cereals like wheat, barley, spelt, or rye. The research team took samples and carried out measurements at over 50 Dutch agricultural farms on both clay and sandy soils.

The organic carbon present in the soil proved to be the best predictor of soil multifunctionality, and for biological indicators, this was bacterial biomass. The researchers saw the same picture in both soil types – a wide array of soil properties was measured, and farmers shared their farming practices.

A popular term, sustainable intensification, is contradictory to these results. More intensive soil management leads to reduced soil functions and is thus less sustainable. Therefore, the researchers propose a new goal: productive de-intensification. If successful, this will result in more functions from a less intensively cultivated soil while retaining crop yields as much as possible.

These findings are the final result of the Vital Soils project, subsidised by NWO Groen and coordinated by NIOO and Wageningen University & Research. The researchers propose adopting productive de-intensification to make agriculture more sustainable while maintaining or even increasing crop yields.

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Agriculture and Food

The Hidden Risks of Cinnamon: How Your Daily Spice Could Affect Medication

Cinnamon is one of the oldest and most commonly used spices in the world, but a new study indicates a compound in it could interfere with some prescription medications.

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The world’s oldest and most commonly used spice, cinnamon, has been found to have a surprising impact on our bodies. A recent study from the National Center for Natural Products Research indicates that cinnamaldehyde, a primary component of cinnamon, can interfere with some prescription medications. This compound activates receptors that control the metabolic clearance of medication from the body, which means consuming large amounts of cinnamon could reduce the effects of drugs.

According to Shabana Khan, a principal scientist in the center, health concerns could arise if excessive amounts of supplements are consumed without the knowledge of a healthcare provider or prescriber. Overconsumption of supplements could lead to rapid clearance of prescription medicine from the body, making it less effective.

While cinnamon has been used for centuries in traditional medicine and is known to help manage blood sugar and heart health, its actual function in the body remains unclear. Sprinkling cinnamon on your morning coffee is unlikely to cause issues, but using highly concentrated cinnamon as a dietary supplement might.

Not all cinnamon is equal; Cinnamon oil, commonly used topically or as a flavoring agent, presents almost no risk of herb-drug interactions. However, Ground Cassia cinnamon bark, which contains high levels of coumarin, a blood thinner, carries a higher risk. True cinnamon from Sri Lanka has lower coumarin content, making it a safer choice.

The researchers recommend that anyone interested in using cinnamon as a dietary supplement check with their doctor first, especially those suffering from chronic diseases such as hypertension, diabetes, cancer, arthritis, asthma, obesity, HIV, AIDS, or depression.

As Amar Chittiboyina, the center’s associate director, stated, “By definition, supplements are not meant to treat, cure or mitigate any disease.” More research is needed to fully understand the role that cinnamon plays in the body and what potential herb-drug interactions may occur.

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Agriculture and Food

Revolutionizing Farming: Autonomous Robot Harvests Crops with Unprecedented Precision

A researcher has developed an autonomous driving algorithm for agricultural robots used for greenhouse cultivation and other farm work.

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The world’s strawberry and tomato production is facing a pressing challenge – finding enough laborers to manually harvest these in-demand crops. While high-bed cultivation has eased some of the physical strain, the need for robots to take over this task is becoming increasingly apparent. Enter Osaka Metropolitan University Assistant Professor Takuya Fujinaga, who has pioneered an algorithm that enables agricultural robots to autonomously navigate and harvest among raised beds with unprecedented precision.

Fujinaga’s groundbreaking research uses lidar point cloud data to create a detailed map of the environment, allowing the robot to move accurately while maintaining a consistent distance from the cultivation bed. This technology is already used in high-end smartphones and autonomous vehicles, making it a reliable solution for agricultural applications.

The implications are vast – with robots capable of performing tasks beyond harvesting, such as monitoring for disease and pruning, farm efficiency will improve significantly. According to Fujinaga, “Once this type of agricultural robot becomes more practical to use, it will make a significant contribution to improving work efficiency and reducing labor, especially for high-bed cultivation.”

Published in Computers and Electronics in Agriculture, Fujinaga’s research is a crucial step towards revolutionizing the farming industry and ensuring that strawberry fields forever remain a staple of our fruit supply.

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