Gardening On Mars

Calopteryx writes "Following Obama's announcement of the intention to send humans to Mars by the mid-2030s, New Scientist reports on plans to piece together the elements of a starter kit for the first colonists of the Red Planet: 'The creation of a human outpost on Mars is still some way off, but that hasn't stopped us planning the garden.'"

Comments

Re:And

[Lunix Nutcase]

Yes, one would have to. This is why humans have always been omnivores. Even up to a few hundred years ago it would be been completely impractical to be a vegan due to the lack of supplements for essentials vitamins and minerals that one cannot reliably get from plant sources. Vitamin B12 deficiency is one of the leading issues with a poorly planned vegan diet and this vitamin was not even isolated until 1948. Before that point one was given liver extracts to treat things like pernicious anemia which results from B12 deficiency.

Re:And

[crmarvin42]

Soy is an excellent plant source of protein. However, protein is not a single nutrient, but a collection of nutrients known as amino acids. Some amino acids can be synthesized by humans (non-essential or dispensible amino acids), others can be interconverted between each other, and others still have to be consumed intact because humans have innadequate ability to synthesize them (essential or indispensible amino acids). Generally, animal sources of protein have ratios of amino acids more in line with the human requirement (Egg being the gold standard).

one must also consider anti-nutritive factors in soy. Soy is the second most alergenic food to humans, and contains high concetrations of phytic acid. Phytic acid can reduce the digestibility not only of nutrients within the soy plant (P, Ca, Zn, Mn, et al), but also within other foods eaten with the soy.

Also, animal protein sources are much more dense. Fish contain a much higher percent protein in addition to having a better amino acid profile. Humans living on vegan diets usually take amino acid supplements because they cannot physically eat enough soy in a day to meet their dietary requirements for amino acids without feeling like they've eaten too much, if they can consume that much soy at all. A filet of fish goes a longer way toward meeting the nutritional requirement than an identical wieght of soy beans. If you want to isolate soy protein, then you need a lot of specialized equipment and some rather harsh chemicals to extract the protein whereas fish protein is simply extracted by mechanically scaling and gutting the fish.

Any potential Martian colonists will have a diet that bares little resemplence to the average American's diet now, but Veganisms is dependent upon modern infrastructure that would be difficult to replicate on Mars.

Re:How, exactly?

[Locke2005]

Never let the facts stand in the way of a good anti-Obama rant!

Obama's strategy, which increases NASA's budget by $6 billion over the next five years, looks to commercial space vehicles to take over the role of transporting astronauts to and from low Earth orbit and focuses the agency's efforts on technologies that will take explorers to destinations beyond the Moon.

Canceling Constellation != "draining the lifeblood out of every avenue of manned exploration", and in fact, Obama is increasing NASA's budget!

Re:And

[reverseengineer]

It's not blood that makes red meat red; it's the myoglobin concentration in the muscle, which in turn relates to that muscle's use of oxygen. Meat from adult mammalian tissues on average contains about ten times as much myoglobin as meat from poultry. In poultry, meat can be further differentiated into "light and dark" meat based on what part of the bird it comes from- muscles in the wings, thighs, and legs need more oxygen to sustain activity, have more myoglobin, and are darker- but still have less myoglobin than most beef.

Draining blood out of the meat isn't going to change its color; the myoglobin is within the muscle itself. The color of meat can be affected by the animal's age and diet however: veal, for instance, can be nearly white in color when taken from calves fed only on milk. Myoglobin, like its bloodborne relative hemoglobin, does contain iron, and does represent a major dietary source if you eat red meat.