Proximate Composition, Amino Acid Profile, Fatty Acid Composition, and Mineral Content of Peanut Seeds Hydroponically Grown at Elevated CO₂ Levels

Abstract

Peanut plants (Arachis hypogaea L. cv. Georgia Red) were grown hydroponically using a recirculating nutrient film technique. The effect of CO2 enrichment on nutritive composition of hydroponic peanut seeds was examined at two elevated CO2 levels (700 and 1400 ppm) that simulate potential conditions in National Aeronautics and Space Administration (NASA) Controlled Ecological Life-Support Systems (CELSS) and compared to ambient CO2 condition in hydroponics (the control). Plants were harvested at 97 days after planting, and the seeds were air-dried and analyzed for composition. Percentages of crude protein, crude fat, ash, and carbohydrate of hydroponic peanut seeds were around 30%, 30%, 3%, and 30%, respectively. The major amino acids were aspartic acid, glutamic acid, and arginine. The limiting amino acid of peanut, methionine, was 1.2%. Linoleic acid was the major fatty acid, followed by oleic and palmitic acids. The major mineral elements were K, P, Mg, and Ca. The results showed that certain peanut varieties can be grown hydroponically. The composition of the hydroponically grown peanuts is generally similar to reported peanut composition. The nutrient composition was not affected at the elevated CO2 concentrations investigated. Keywords: CELSS; hydroponic; NFT; elevated CO2 levels; peanut

Chemical composition and microstructure of Bauhinia grains

“…Bauhinia grains also contained substantial amounts of zinc (6 mg/100 g) and iron (3 mg/100 g) when compared to FAO/ WHO standards. The mineral composition of Bauhinia appeared similar to oilseeds such as marama bean (Amonsou et al 2011), peanuts (Wu et al 1997) and other Bauhinia species such as the B. monandra (Anhwange et al 2005). …”

Elevated atmospheric CO2 concentration and diurnal cycle induce changes in lipid composition in Arabidopsis thaliana

“…Different effects of elevated CO 2 on oil yield in oil crops have been reported. No change in oil content could be observed in peanut ( Arachis hypogaea ) (Wu et al ., 1997) and oil seed rape (Frick et al ., 1994). CO 2 enrichment stimulated the seed yield of soybean ( Glycine max ), but the effects on seed oil content were variable, with differences among cultivars (Heagle et al ., 1998; Ziska et al ., 1998).…”

Seed Composition, Seedling Emergence and Early Seedling Vigour of Red Kidney Bean Seed Produced at Elevated Temperature and Carbon Dioxide

“…Some elevated CO 2 studies reported decreased N concentration in soybean seed (Rogers et al 1984) while others reported no effect (Allen et al 1988). There were no reported effects of elevated CO 2 on nutrient composition and mineral nutrients in peanut (Arachis hypogaea L.) seeds (Wu et al 1997). There was no effect of parental plant growth at elevated CO 2 on subsequent seedling emergence of soybean (Rogers et al 1980) and wheat (Triticum aestivum L; .…”

“…2003). There were no reported effects of elevated CO 2 on nutrient composition and mineral nutrients in peanut ( Arachis hypogaea L.) seeds (Wu et al. 1997).…”