Researchers from Tuskegee University in Alabama conducted a study targeted at finding a way to incorporate natural and fresh antioxidants into the diets of astronauts while traveling in space. They grew 18 different varieties of hydroponic carrots using two different methods of nutrient delivery. Growing carrots hydroponically cultivates the vegetables by placing the roots in liquid nutrient solutions rather than in soil.
Among all foods, carrots have the highest carotenoid content. They also contain a natural pigment known for provitamin A and have been associated with protection against cancer, cardiovascular diseases, cataracts and macular degeneration as well as enhancing the immune response. Astronauts can be exposed to elevated levels of radiation, which might put them at risk for some types of cancer. Researchers believe that the addition of unprocessed carrots to their diets may help reduce the negative effects of radiation and cancer development.
The hydroponically grown carrots were issued nutrients in two different methods. One method is the nutrient film technique (NFT), in which the roots were exposed to a nutrient solution within a plastic film trough. The second method is the microporous tube membrane system (MTMS), in which nutrient tubes were embedded into Turface—a material similar to crushed clay— where the carrots were planted.
All carrots were harvested 70 days after planting. They were tested for moisture, fat and carotene content as well as color and texture. Consumer testing also occurred to test the acceptability of the hydroponic carrots. This group evaluated color, crunchiness, sweetness, fibrousness, blandness and overall preference of the 18 different carrot types grown using NFT and MTMS.
The study concluded that hydroponic carrots grown using the MTMS method were most appealing to consumers due to their color and more carrot-like appearance. Moisture contents were similar among all hydroponic carrots as was the carotene content. Lead researcher A.C. Bovell-Benjamin stated, “The Nevis-F carrot cultivar grown using the NFT method had the highest carotenoid content and acceptability among consumers, and therefore, it will be the most likely choice for inclusion in NASA’s food system.”
To receive a copy of the study, please contact Jeannie Houchins at email@example.com.
© 2009 Institute of Food Technologists
Jeannie Houchins | Newswise Science News
Rutgers-led innovation could spur faster, cheaper, nano-based manufacturing
14.02.2018 | Rutgers University
New study from the University of Halle: How climate change alters plant growth
12.01.2018 | Martin-Luther-Universität Halle-Wittenberg
A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.
In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...
A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
23.02.2018 | Physics and Astronomy
23.02.2018 | Health and Medicine
23.02.2018 | Physics and Astronomy