NASA looks to spice up astronaut menu with deep space food production

tech.hindustantimes.com:

In the 2015 sci-fi film "The Martian," Matt Damon stars as an astronaut who survives on a diet of potatoes cultivated in human feces while marooned on the Red Planet.

Now a New York company that makes carbon-negative aviation fuel is taking the menu for interplanetary cuisine in a very different direction. Its innovation has put it in the finals of a NASA-sponsored contest to encourage development of next-generation technologies for meeting the food needs of astronauts.

Closely held Air Company of Brooklyn has pioneered a way of recycling carbon dioxide exhaled by astronauts in flight to grow yeast-based nutrients for protein shakes designed to nourish crews on long-duration deep-space missions.

"It's definitely more nutritious than Tang," said company co-founder and Chief Technology Officer Stafford Sheehan, referring to the powdered beverage popularized in 1962 by John Glenn when he became the first American to orbit Earth.

Sheehan, who has a doctorate in physical chemistry from Yale University, said he originally developed his carbon-conversion technology as a means of producing high-purity alcohols for jet fuel, perfume and vodka.

The NASA-sponsored Deep Space Food Challenge prompted Sheehan to modify his invention as a way of producing edible proteins, carbohydrates and fats from the same system.

The resulting single-cell protein drink entered in NASA's contest has the consistency of a whey protein shake, Sheehan said. Sheehan compared its flavor with that of seitan, a tofu-like food made from wheat gluten that originated in East Asian cuisine and has been adopted by vegetarians as a meat substitute.

"And you get that sweet-tasting, almost malted flavor to it," Sheehan said in an interview.

Apart from protein drinks, the