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J Agric Food Chem

Title:		Elucidation of the Impact of Different Drying Methods on the Key Odorants of Toona sinensis (A. Juss.) Roem. Using the Sensomics Approach
Author(s):		Zhai X; Granvogl M;
Address:		"Lebensmittelchemie, Fakultat Chemie, Technische Universitat Munchen, Lise-Meitner-Strasse 34, D-85354 Freising, Germany. Institut fur Lebensmittelchemie, Fachgebiet Lebensmittelchemie und Analytische Chemie (170a), Fakultat Naturwissenschaften, Universitat Hohenheim, Garbenstrasse 28, D-70599 Stuttgart, Germany"
Journal Title:		J Agric Food Chem
Year:		2020
Volume:		20200707
Issue:		29
Page Number:		7697 - 7709
DOI:		10.1021/acs.jafc.0c02144
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"The sensomics approach was applied to both green and red Toona sinensis (TS) varieties dried with different methods (freeze drying, solar drying, and oven drying) to elucidate their influences on the key odorants in TS. Odorant screening via comparative aroma dilution analysis revealed eugenol with the highest flavor dilution factor in all six samples. Quantitation of 44 odorants via stable isotope dilution assays and semiquantitation of six compounds via an internal standard method showed (E,E)-, (E,Z)-, and (Z,Z)-di-1-propenyl disulfide, dimethyl sulfide, beta-ionone, eugenol, cis- and trans-2-mercapto-3,4-dimethyl-2,3-dihydrothiophene, 2- and 3-methylbutanal, and 2-isopropyl-3-methoxypyrazine with high odor activity values (OAVs) in all samples. Differences were found for (E,Z)-2,6-nonadienal, (E,E)-, (E,Z)-, and (Z,Z)-di-1-propenyl trisulfide, 3-methylnonane-2,4-dione, and (E)-2-hexenal with clearly higher OAVs in freeze-dried (FDTS) and solar-dried TS (SDTS) compared to those in oven-dried TS (ODTS). Linalool, 2-methoxyphenol, and 4-ethylphenol (the latter two only for red TS) were obtained with high OAVs only in FDTS. In general, ODTS showed the lowest OAVs, whereas FDTS as the gentlest drying process revealed the highest OAVs for most odorants and, consequently, the highest aroma quality. However, the overall aroma of SDTS did not differ too much from that of FDTS, and thus, solar drying as a much easier and cheaper technique might be the best choice"
Keywords:		Desiccation/*methods Flavoring Agents/chemistry Food Handling/*methods Gas Chromatography-Mass Spectrometry Humans Odorants/analysis Olfactometry Smell Toona/*chemistry/classification Volatile Organic Compounds/*chemistry Toona sinensis aroma extract dilu;
Notes:		"MedlineZhai, Xiaoting Granvogl, Michael eng Evaluation Study 2020/06/10 J Agric Food Chem. 2020 Jul 22; 68(29):7697-7709. doi: 10.1021/acs.jafc.0c02144. Epub 2020 Jul 7"