Determination of citrulline in watermelon rind.

@article{Rimando2005DeterminationOC,
  title={Determination of citrulline in watermelon rind.},
  author={Agnes M. Rimando and Penelope M. Perkins-Veazie},
  journal={Journal of chromatography. A},
  year={2005},
  volume={1078 1-2},
  pages={
          196-200
        }
}
Watermelon (Citrullus vulgaris Schrad.) is a natural and rich source of the non-essential amino acid citrulline. Citrulline is used in the nitric oxide system in humans and has potential antioxidant and vasodilatation roles. A method using gas chromatography-mass spectrometry (GC-MS) was developed to separate citrulline from glutamic acid, which co-elute when analyzed by high performance liquid chromatography. Watermelons were analyzed by GC-MS to determine the citrulline content among… 
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TLDR
Variability of citrulline levels among individual fruit of a cultivar age group was much greater in the rind than in the flesh, and citrulla levels were markedly influenced by growing conditions.
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Down-regulation N-acetylornithine-glutamate acetyltransferase (N-AOGA) suggests the subordinate role of the non-cyclic pathway in citrulline synthesis, and Eccentricity between citruLLine accumulation and expression of carbamoyl phosphate synthases (CPS-1, CPS-2) during fruit development suggest that the localized synthesis of carbAMoyl phosphates may not be required for citruilline synthesis.
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Spatial accumulation pattern of citrulline and other nutrients in immature and mature watermelon fruits.
TLDR
Principal component analysis suggested a clear distinction of the central flesh and outer peels in mature fruits from other tissues in terms of the levels of major nutrients.
Levels of seed proteins in Citrullus and Praecitrullus accessions
TLDR
Variation among 17 accessions of Citrullus lanatus from different geographic regions and interspecific relationships of six taxa of Citrus lanatus were studied using electrophoretic patterns of their seed storage proteins to support their placement in a separate genus unlike its nomenclature as a botanical variety of watermelon.
A metabolomics approach to identify and quantify the phytochemicals in watermelons by quantitative (1)HNMR.
TLDR
Development of a method to identify and quantify amino acids and sugars simultaneously from watermelon samples using quantitative proton NMR is described and validated for specificity, linearity, accuracy, precision, reproducibility, and robustness.
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TLDR
Under drought conditions in the presence of strong light, wild watermelon accumulates high concentrations of citrulline, glutamate and arginine in its leaves, which may be related to the induction of DRIP-1, a homologue of ArgE in Escherichia coli, where it functions to incorporate the carbon skeleton of glutamate into the urea cycle.
Citrulline, a novel compatible solute in drought‐tolerant wild watermelon leaves, is an efficient hydroxyl radical scavenger
TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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