| Title: | "Factors Contributing to Interindividual Variation in Retronasal Odor Perception from Aroma Glycosides: The Role of Odorant Sensory Detection Threshold, Oral Microbiota, and Hydrolysis in Saliva" |
| Author(s): | Parker M; Onetto C; Hixson J; Bilogrevic E; Schueth L; Pisaniello L; Borneman A; Herderich M; de Barros Lopes M; Francis L; |
| Address: | "The Australian Wine Research Institute, Post Office Box 197, Glen Osmond, Adelaide, South Australia 5064, Australia. School of Pharmacy and Medical Sciences, The University of South Australia, General Post Office Box 2471, Adelaide, South Australia 5001, Australia" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "Glycosides are sugar conjugates of aroma compounds that are found in many fruits and vegetables, and while glycosides are non-volatile, they can release flavor during eating, through enzyme hydrolysis from oral microbiota. Recently, a range of sensory phenotypes for glucoside perception have been observed, reflecting interindividual variation in response to precursors of floral and smoky flavors, geranyl glucoside and guaiacyl glucoside. To understand this variation and investigate the role of oral microbiota on in vitro hydrolysis of glucosides in saliva, metagenomic screening was conducted using individuals representing the range of sensory phenotypes for geranyl and guaiacyl glucosides. In parallel, sensory retronasal detection thresholds for geranyl glucoside, guaiacyl glucoside, and the volatile odorants geraniol and guaiacol were determined. Oral microbial communities correlated with hydrolysis of glucosides in saliva, but the relationship did not extend to sensory phenotypes. Overall, the retronasal detection threshold of the volatile odorants studied was the main factor determining sensory phenotype" |
| Keywords: | Adult Bacteria/classification/isolation & purification/metabolism Flavoring Agents/analysis Glycosides/*chemistry Humans Male *Microbiota Middle Aged Mouth/metabolism/*microbiology Odorants/analysis *Olfactory Perception Saliva/*chemistry/metabolism Smell; |
| Notes: | "MedlineParker, Mango Onetto, Cristobal Hixson, Josh Bilogrevic, Eleanor Schueth, Louisa Pisaniello, Lisa Borneman, Anthony Herderich, Markus de Barros Lopes, Miguel Francis, Leigh eng 2019/10/22 J Agric Food Chem. 2020 Sep 23; 68(38):10299-10309. doi: 10.1021/acs.jafc.9b05450. Epub 2019 Oct 31" |
