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Review
. 2018 Apr 4;66(13):3291-3301.
doi: 10.1021/acs.jafc.8b01115. Epub 2018 Mar 26.

What Do We Know about the Chemistry of Strawberry Aroma?

Affiliations
Review

What Do We Know about the Chemistry of Strawberry Aroma?

Detlef Ulrich et al. J Agric Food Chem. .

Abstract

The strawberry, with its unique aroma, is one of the most popular fruits worldwide. The demand for specific knowledge of metabolism in strawberries is increasing. This knowledge is applicable for genetic studies, plant breeding, resistance research, nutritional science, and the processing industry. The molecular basis of strawberry aroma has been studied for more than 80 years. Thus far, hundreds of volatile organic compounds (VOC) have been identified. The qualitative composition of the strawberry volatilome remains controversial though considerable progress has been made during the past several decades. Between 1997 and 2016, 25 significant analytical studies were published. Qualitative VOC data were harmonized and digitized. In total, 979 VOC were identified, 590 of which were found since 1997. However, 659 VOC (67%) were only listed once (single entries). Interestingly, none of the identified compounds were consistently reported in all of the studies analyzed. The present need of data exchange between "omic" technologies requires high quality and robust metabolic data. Such data are unavailable for the strawberry volatilome thus far. This review discusses the divergence of published data regarding both the biological material and the analytical methods. The VOC extraction method is an essential step that restricts interlaboratory comparability. Finally, standardization of sample preparation and data documentation are suggested to improve consistency for VOC quantification and measurement.

Keywords: Fragaria × ananassa Duch.; gas chromatography; identification; mass spectrometry; volatile organic compounds.

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