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citrus_paradisi [2017/02/16 11:04]
andreas |
citrus_paradisi [2017/08/11 12:17]
andreas |
| [Evaluation of key aroma compounds in hand-squeezed grapefruit juice (Citrus paradisi Macfayden) by quantitation and flavor reconstitution experiments., Buettner, A., Schieberle, P., Journal of Agricultural and Food Chemistry, 49(3), 2001, 1358-1363] | [Evaluation of key aroma compounds in hand-squeezed grapefruit juice (Citrus paradisi Macfayden) by quantitation and flavor reconstitution experiments., Buettner, A., Schieberle, P., Journal of Agricultural and Food Chemistry, 49(3), 2001, 1358-1363] |
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| "The sesquiterpene ketone [[http://en.wikipedia.org/wiki/Nootkatone|(+)-nootkatone]], which possesses a citrus-like character and a bitter taste, also occurs as a typical constituent in almost all peel oils. [grapefruit 0.5-1.8%, grapefruit juice 3.3%] Due to its low odor treshold of 800μg/l water, this bicyclic sesquiterpene contributes much to the overall character of an essential oil even at concentrations below 0.001% (10.000ppb). Its enantiomer (-)-nootkatone lacks both the citrus character and the low treshold... The characteristic fresh fruity top-note of grapefruit juice is mainly due to p-menth-1-ene-8-thiol, which is present only in concentrations below 1ppb. [This] Compound has an odor treshold of 0.1ng/l water, ... one of the lowest odor tresholds of all naturall aroma chemicals." \\ | "The sesquiterpene ketone [[http://en.wikipedia.org/wiki/Nootkatone|(+)-nootkatone]], which possesses a citrus-like character and a bitter taste, also occurs as a typical constituent in almost all peel oils [of citrus fruits, like lemon peel 0.06%, grapefruit peel 0.5-1.8%, but grapefruit juice oil 3.3% (!)]. Due to its low odor treshold of 800μg/l water, this bicyclic sesquiterpene contributes much to the overall character of an essential oil even at concentrations below 0.001% (10.000ppb). Its enantiomer (-)-nootkatone lacks both the citrus character and the low treshold... The characteristic fresh fruity top-note of grapefruit juice is mainly due to p-menth-1-ene-8-thiol, which is present only in concentrations below 1ppb. [This] Compound has an odor treshold of 0.1ng/l water, ... one of the lowest odor tresholds of all naturall aroma chemicals." \\ |
| [Scent and Chemistry, Günther Ohloff, Wilhelm Pickenhagen, Philip Kraft, Wiley-VCH, 2012, 222ff] | [Scent and Chemistry, Günther Ohloff, Wilhelm Pickenhagen, Philip Kraft, Wiley-VCH, 2012, 222ff] |
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