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Related Experiment Videos

Controlled environments alter nutrient content of soybeans.

L J Jurgonski1, D J Smart, B Bugbee

  • 1Department of Food Science, Purdue University, West Lafayette, Indiana 47907-1160, USA.

Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)
|January 1, 1997
PubMed
Summary

Soybean composition differs between field and controlled environments, impacting potential diets for life-support systems. Controlled conditions increased protein and lipids but altered mineral ratios, with CO2 levels affecting leaf nutrients.

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Area of Science:

  • Plant Physiology
  • Nutritional Science
  • Astrobiology

Background:

  • Controlled Ecological Life-Support Systems (CELSS) require detailed nutritional data for candidate crops.
  • Soybean composition data for CELSS applications has been limited.
  • Understanding environmental effects on soybean nutrition is crucial for food safety and quality.

Purpose of the Study:

  • To determine the impact of controlled environmental factors on soybean macronutrient and mineral composition.
  • To compare soybean composition grown in field conditions versus controlled environments.
  • To inform crop selection for CELSS diets.

Main Methods:

  • Soybeans were grown in field and controlled environments with manipulated hydroponic solutions, photosynthetic flux, and CO2 levels.
Keywords:
NASA Discipline Life Support SystemsNon-NASA Center

Related Experiment Videos

  • Plants were harvested at maturity, separated into parts, oven-dried, and analyzed.
  • Analyses included proximate composition, nitrogen fractions, nitrate, minerals, amino acids, and dietary fiber.

    • Main Results:

    • Controlled environment (chamber) grown plants showed increased total nitrogen, protein nitrogen, and seed lipids compared to field-grown plants.
    • Nitrate levels increased in leaves and stems but not seeds in chamber-grown plants.
    • CO2 levels affected leaf composition, with higher protein and dietary fiber at 350 ppm CO2 compared to 1000 ppm CO2.

    Conclusions:

    • Environmental factors significantly alter soybean composition, with implications for CELSS nutritional value.
    • Controlled environment growing conditions can enhance protein and lipid content but require careful management of mineral balance.
    • CO2 concentration influences specific nutritional components, particularly in leaves, necessitating optimization for CELSS food production.