Variation in Total Amino Acid Percentage in Different Portions of Peanut Cotyledons1

Hovis, Allan R.; Young, Clyde T.; Tai, P. Y. P.

doi:10.3146/i0095-3679-9-1-13

Cited by 3 publications

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“…It has been reported that aspartic acid, glutamic acid, and arginine may account for about 45% of the total amino acid in peanut seeds, and lysine, methionine, and threonine are considered the limiting amino acids in peanuts (Young et al, 1973;Pancholy et al, 1978). Additionally, the content of amino acids in peanut seeds varies according to genotype, variety, growing season, environmental factors, and maturity (Young et al, 1973(Young et al, , 1974aHovis et al, 1982). Our results (Table 2) also indicate that arginine (119-139 mg/g of protein), aspartic acid (99-114 mg/g of protein), and glutamic acid (168-193 mg/g of protein) make up approximately 45% of the total amino acids in Georgia Red peanut seeds grown in hydroponics.…”

Section: Resultsmentioning

confidence: 99%

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

Jones

et al. 1997

J. Agric. Food Chem.

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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

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Section: Resultsmentioning

confidence: 99%

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

Jones

et al. 1997

J. Agric. Food Chem.

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“…Therefore, in most published reports on amino acid analysis ofpeanut, data on tryptophan are not available and those on ammonia have not been reported. There are, however, a few reports on amino acid analysis of whole seeds (Young, 1979;Hovis et al, 1982) and one on arachin and conarachin (Dawson and McIntosh, 1973) which contain values for ammonia but not for tryptophan.…”

Section: Methodsmentioning

confidence: 99%

“…In this paper, the data on amino acid analysis of whole peanut protein published by Young (1979) and Hovis et al (1982) and that of arachin and conarachin published by Dawson and McIntosh (1973) have been used for calculating new NCPFs for peanut.…”

Section: Methodsmentioning

confidence: 99%

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Variation in Nitrogen-to-Protein Conversion Factor for Peanut

Misra

2001

Peanut Science

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For peanut, a factor of 5.46 is used for converting nitrogen concentration into protein concentration because the peanut proteins arachin and conarachin contain 18.31% nitrogen. Using published reports on the amino acid composition of peanut genotypes, the nitrogen-toprotein conversion factors (NPCF) for arachin and conarachin, as well as for whole peanut kernel were calculated. The value of NPCF for arachin varied between 5.271 and 5.563 andthatforconarachin from 5.076 to 5.496. The location of crop growth may significantly affect the value of NPCF for whole kernels. For the samples of various genotypes grown at various locations, thevaluesofNPCFvaried between5.3and5.7. Thus, the protein content obtainedby using the conventional factor of 5.46 would have a precision of ± 0.7% for samples having 3.5% N (approx. 18% protein). As the nitrogen content increases, the precision decreases to reach ±1.1% for samples having 5.5% N (approx. 30% protein). This implies that the protein contents of peanut calculated on the basis of a fixed conversion factor would be significantlydifferent onlywhen they differ by 1.4to 2.2% in the calculated values. Therefore, use of a fixed NPCF for comparison of concentration of protein in samples emanating from breeding or agronomic trials may be erroneous, especially when samples differ only marginally in their protein concentrations. Research willbe required to determine the relationship between the nitrogen concentration ofpeanut kernel samples and theirprotein concentration.

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“…Amino acids in cotyledons of peanut genotypes were higher in Virginia and Valencia types than in other market types, with the arginine content of Valencia types ranging from 11.98–13.01% of total amino acid ( Hovis et al 1982 ). The range of protein content in peanut gerplasm is also large, as seen in a 152 accession study of peanut genotypes in China, where total proteins ranged from 18.93% to 30.22% ( Wang et al 2011 ).…”

Section: Introductionmentioning

confidence: 99%

Variability of arginine content and yield components in Valencia peanut germplasm

et al. 2017

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Peanut seeds are rich in arginine, an amino acid that has several positive effects on human health. Establishing the genetic variability of arginine content in peanut will be useful for breeding programs that have high arginine as one of their goals. The objective of this study was to evaluate the variation of arginine content, pods/plant, seeds/pod, seed weight, and yield in Valencia peanut germplasm. One hundred and thirty peanut genotypes were grown under field condition for two years. A randomized complete block design with three replications was used for this study. Arginine content was analyzed in peanut seeds at harvest using spectrophotometry. Yield and yield components were recorded for each genotype. Significant differences in arginine content and yield components were found in the tested Valencia peanut germplasm. Arginine content ranged from 8.68–23.35 μg/g seed. Kremena was the best overall genotype of high arginine content, number of pods/plant, 100 seed weight and pod yield.

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Variation in Total Amino Acid Percentage in Different Portions of Peanut Cotyledons1

Cited by 3 publications

References 0 publications

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

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

Variation in Nitrogen-to-Protein Conversion Factor for Peanut

Variability of arginine content and yield components in Valencia peanut germplasm

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Variation in Total Amino Acid Percentage in Different Portions of Peanut Cotyledons1

Cited by 3 publications

References 0 publications

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

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

Variation in Nitrogen-to-Protein Conversion Factor for Peanut

Variability of arginine content and yield components in Valencia peanut germplasm

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Product

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

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