Sulfur volatiles of microbial origin are key contributors to human-sensed truffle aroma

@article{Splivallo2014SulfurVO,
  title={Sulfur volatiles of microbial origin are key contributors to human-sensed truffle aroma},
  author={Richard Splivallo and Susan E. Ebeler},
  journal={Applied Microbiology and Biotechnology},
  year={2014},
  volume={99},
  pages={2583-2592}
}
  • R. Splivallo, S. Ebeler
  • Published 10 January 2015
  • Chemistry, Medicine
  • Applied Microbiology and Biotechnology
Truffles are symbiotic fungi in high demand for the aroma of their fruiting bodies which are colonized by a diverse microbial flora. Specific sulfur containing volatiles (thiophene derivatives) characteristic of the white truffle Tuber borchii were recently shown to be derived from the bacterial community inhabiting truffle fruiting bodies. Our aim here was to investigate whether thiophene derivatives contributed to the human-sensed aroma of T. borchii. Furthermore, we questioned whether the… 
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References

SHOWING 1-10 OF 39 REFERENCES
Bacteria associated with truffle-fruiting bodies contribute to truffle aroma.
TLDR
It is found that sulphur-containing volatiles such as thiophene derivatives, characteristic of T. borchii fruiting bodies, resulted from the biotransformation of non-volatile precursor(s) into volatile compounds by bacteria, suggesting that during the sexual stage of truffles,Thiophene volatile are exclusively synthesized by bacteria and not by the truffle.
Truffle volatiles: from chemical ecology to aroma biosynthesis.
TLDR
The aim of this review is to synthesize 30 yr of research on truffle volatiles, spanning fields of study from chemical ecology to aroma biosynthesis, focusing on how high-throughput post-genomic technologies may advance the understanding of truffle aroma bios synthesis and chemical ecology.
Intraspecific genotypic variability determines concentrations of key truffle volatiles
TLDR
The results indicate that the variation in C8-VOCs in truffles is most likely under genetic control, and exemplify that understanding the factors behind aroma variability requires a holistic approach, and raise new questions regarding the ecological role of 1-octen-3-ol in trUFFles.
Discrimination of truffle fruiting body versus mycelial aromas by stir bar sorptive extraction.
Identification of potent odorants in a novel nonalcoholic beverage produced by fermentation of wort with shiitake (Lentinula edodes).
TLDR
Among 31 screened fungi, shiitake (Lentinula edodes) produced the most pleasant flavor, perceived as fruity, slightly sour, and plum-like.
Production of volatile organic compounds (VOCs) by yeasts isolated from the ascocarps of black (Tuber melanosporum Vitt.) and white (Tuber magnatum Pico) truffles
TLDR
Since some molecules produced by the isolates of this study are also characteristic of truffle complex aroma, it is possible to hypothesize a complementary role of yeasts associated with this ecosystem in contributing to final Tuber spp.
Evaluation of aroma active compounds in Tuber fruiting bodies by gas chromatography–olfactometry in combination with aroma reconstitution and omission test
TLDR
The aroma active compounds of three Tuber fruiting bodies were firstly systematically evaluated by instrumental gas chromatography–olfactometry combining with quantitative analysis, aroma reconstitution, and omission tests to verify the significance of 3-(methylthio) propanal, 1-octen-3-ol, and 3-methylbutanal as key compounds in the aroma of tested Tuber fruits.
Geographical traceability of Italian white truffle (Tuber magnatum Pico) by the analysis of volatile organic compounds.
TLDR
The results suggest that, besides genetic factors, environmental conditions influence the formation of volatile organic compounds in white truffles.
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