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camellia_sinensis_l._kuntze [2022/01/22 18:09]
andreas |
camellia_sinensis_l._kuntze [2023/12/02 13:26] (aktuell)
andreas |
| "Sensory-guided analysis of the volatile fraction isolated from a freshly prepared green tea beverage (Camellia sinensis; type Jingshan cha) revealed 58 odor-active compounds after application of an aroma extract dilution analysis. Among them, 3-methylnonane-2,4-dione, (Z)-1,5-octadien-3-one, 3-(methylthio)propanal, trans-4,5-epoxy-(E)-2-decenal, methanethiol, dimethyl sulfide, and indole appeared with the highest flavor dilution factors. A quantitation of 42 aroma compounds by means of stable isotope dilution assays followed by the calculation of odor activity values (OAV; ratio of concentration to odor detection threshold) showed 27 key aroma compounds with OAVs ≥ 1. By far, the highest OAV of 458 was calculated for the asparagus-like/putrid smelling dimethyl sulfide followed by (E,E)-2,4-heptadienal." \\ | "Sensory-guided analysis of the volatile fraction isolated from a freshly prepared green tea beverage (Camellia sinensis; type Jingshan cha) revealed 58 odor-active compounds after application of an aroma extract dilution analysis. Among them, 3-methylnonane-2,4-dione, (Z)-1,5-octadien-3-one, 3-(methylthio)propanal, trans-4,5-epoxy-(E)-2-decenal, methanethiol, dimethyl sulfide, and indole appeared with the highest flavor dilution factors. A quantitation of 42 aroma compounds by means of stable isotope dilution assays followed by the calculation of odor activity values (OAV; ratio of concentration to odor detection threshold) showed 27 key aroma compounds with OAVs ≥ 1. By far, the highest OAV of 458 was calculated for the asparagus-like/putrid smelling dimethyl sulfide followed by (E,E)-2,4-heptadienal." \\ |
| [Flaig, Mario, et al. "Characterization of the key odorants in a high-grade Chinese green tea beverage (Camellia sinensis; Jingshan cha) by means of the sensomics approach and elucidation of odorant changes in tea leaves caused by the tea manufacturing process." Journal of agricultural and food chemistry 68.18 (2020): 5168-5179] | [Flaig, Mario, et al. "Characterization of the key odorants in a high-grade Chinese green tea beverage (Camellia sinensis; Jingshan cha) by means of the sensomics approach and elucidation of odorant changes in tea leaves caused by the tea manufacturing process." Journal of agricultural and food chemistry 68.18 (2020): 5168-5179] |
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| | "There were 32 VOCs that contribute to the aroma of green tea, 12 of which contributed to the aroma characteristics of green... Among the above 12 components, 3 were positively correlated with the green score of aroma profile, they were geraniol, cis-3-hexen-1-ol and (E)-2-hexen-1-ol, respectively... cis-3-hexen-1-ol played the leading role in green aroma of green tea." \\ |
| | [Nie, Cong-ning, et al. "Characterization of the effect of cis-3-hexen-1-ol on green tea aroma." Scientific reports 10.1 (2020): 1-15] |
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| | Roller-hot air fixation has been found as the optimal method for generating an intense and long-lasting chestnut-like aroma and floral taste of of green tea with a chestnut-like aroma. Theaspirane, linalool, cedrol, 3-methyl-butanal, trans-β-ionone, and τ-cadinol emerged as key differential volatile compounds between green teas with and without a chestnut-like aroma. \\ |
| | [Wang, Huajie, et al. "Influence of fixation methods on the chestnut-like aroma of green tea and dynamics of key aroma substances." Food Research International 136 (2020): 109479] |
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| | Omission tests showed that (E)-β-damascenone, β-ionone, dihydro-β-ionone, linalool, and geraniol were the key odor-active compounds for the aroma profile of sun-dried black tea. Phenylethyl alcohol, (E)-2-decenal, hexanal, and methyl salicylate were also important to the aroma profile. \\ |
| | [Liu, Cong, et al. "Characterization of key odor-active compounds in Sun-Dried black tea by sensory and instrumental-directed flavor analysis." Foods 11.12 (2022): 1740] [[https://www.mdpi.com/2304-8158/11/12/1740/pdf]] |
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| | "...reduction and addition experiments revealed phenylacetaldehyde, (E,E)-2,4-heptadienal, geraniol, linalool, β-damascenone, 2-methylbutyraldehyde, dimethyl sulfide, and isovaleraldehyde with odor activity values (OAV) > 100 as the characteristic aroma components of F4H [fully fermented black tea] and also as the main contributors to aroma differences between different fermentation degrees." \\ |
| | [Zhou, Jingtao, et al. "Characterizing and Decoding the Effects of Different Fermentation Levels on Key Aroma Substances of Congou Black Tea by Sensomics." Journal of Agricultural and Food Chemistry 71.40 (2023): 14706-14719] |
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