| Title: | "Formation of Decatrienones with a Pineapple-like Aroma from 1-(13)C-Acetate by Cell Cultures of the Birch Polypore, Fomitopsis betulina" |
| Author(s): | Grosse M; Wu S; Krings U; Berger RG; |
| Address: | "Institute of Food Chemistry , Gottfried Wilhelm Leibniz University , Callinstr. 5 , 30167 Hannover , Germany. School of Agriculture and Biology , Shanghai Jiao Tong University , 800 Dongchuan Road , 200240 Shanghai , China" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "During submerged cultivation, the edible basidiomycete Fomitopsis betulina (previously Piptoporus betulinus) developed a fruity odor, strongly reminding of pineapple. Olfactometric analysis showed that this impression was mainly caused by the two (5E/Z,7E,9)-decatrien-2-ones. At the time of maximum concentration on the 5th day, the (5E/5Z)-ratio was 94:6. Three hypotheses were experimentally examined to shed light onto the genesis of the uncommon volatiles: first, an indirect effect of agro-industrial side-streams, such as cabbage cuttings, supporting good growth; second, an unsaturated odd-numbered fatty acid precursor; and third, a polyketide-like pathway. In the presence of 1-(13)C- or 2-(13)C-acetate up to five acetates were incorporated into the molecular ions of the C10-body. Addition of 1-(13)C-pyruvate or 1-(13)C-lactate did not confirm an odd-numbered starter of the polyketide chain. None of the methylketones was found in pineapple or any other food before" |
| Keywords: | "Acetates/analysis Carbon Isotopes/analysis Coriolaceae/*chemistry/growth & development/metabolism Ketones/chemistry Odorants/*analysis Volatile Organic Compounds/*chemistry/metabolism (5E/Z, 7E, 9)-decatrien-2-one Fomitopsis betulina pineapple odor polyketi;" |
| Notes: | "MedlineGrosse, Miriam Wu, Shimin Krings, Ulrich Berger, Ralf G eng 2020/01/21 J Agric Food Chem. 2020 Feb 12; 68(6):1678-1683. doi: 10.1021/acs.jafc.9b07494. Epub 2020 Feb 3" |
