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  A Stable Isotope Approach to Assessing Water Loss in Fruits and Vegetables during Storage

Greule, M., Rossmann, A., Schmidt, H.-L., Mosandl, A., & Keppler, F. (2015). A Stable Isotope Approach to Assessing Water Loss in Fruits and Vegetables during Storage. Journal of Agricultural and Food Chemistry, 63(7), 1974-1981. doi:10.1021/jf505192p.

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 Creators:
Greule, Markus1, Author           
Rossmann, Andreas2, Author
Schmidt, Hanns-Ludwig2, Author
Mosandl, Armin2, Author
Keppler, Frank1, Author           
Affiliations:
1Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826285              
2external, ou_persistent22              

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 Abstract: Plant tissue water is the source of oxygen and hydrogen in organic biomatter. Recently, we demonstrated that the stable hydrogen isotope value (delta H-2) of plant methoxyl groups is a very reliable and easily available archive for the delta H-2 value of this tissue water. Here we show in a model experiment that the delta H-2 values of methoxyl groups remain unchanged after water loss during storage of fruits and vegetables under controlled conditions, while delta H-2 and delta O-18 values of tissue water increase. This enhancement is plant-dependent, and the correlation differs from the meteoric water line. The delta O-18 value is better correlated to the weight decrease of the samples. Therefore, we postulate that the delta H-2 value of methoxyl groups and the delta O-18 value of tissue water are suitable parameters for checking postharvest alterations of tissue water, either addition or loss.

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 Dates: 2015
 Publication Status: Issued
 Pages: -
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 Rev. Type: -
 Identifiers: ISI: 000350193400010
DOI: 10.1021/jf505192p
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Title: Journal of Agricultural and Food Chemistry
Source Genre: Journal
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Publ. Info: Easton, Pa. : American Chemical Society, Books and Journals Division
Pages: - Volume / Issue: 63 (7) Sequence Number: - Start / End Page: 1974 - 1981 Identifier: ISSN: 0021-8561
CoNE: https://pure.mpg.de/cone/journals/resource/954925410802