| Beide Seiten der vorigen RevisionVorhergehende Überarbeitung | |
| hibiscus_sabdariffa_l [2025/11/23 09:09] – andreas | hibiscus_sabdariffa_l [2025/11/24 08:35] (aktuell) – andreas |
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| Erect annual herb, up to 2m tall, probably native to West Africa, cultivated and naturalized throughout tropics; stems robust, purplish; leaves dimorphic; blades on proximal part of stem ovate, those on distal part of stem palmately 3-lobed, lobes lanceolate; flowers solitary, axillary, calyx purplish, cup-shaped, corolla yellow with dark red center, 6-7cm in diameter. "The fleshy calyx and epicalyx are edible, both fresh as a vegetable and dried as a tea." [[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200013718]] | Erect annual herb, up to 2m tall, probably native to West Africa, cultivated and naturalized throughout tropics; stems robust, purplish; leaves dimorphic; blades on proximal part of stem ovate, those on distal part of stem palmately 3-lobed, lobes lanceolate; flowers solitary, axillary, calyx purplish, cup-shaped, corolla yellow with dark red center, 6-7cm in diameter. "The fleshy calyx and epicalyx are edible, both fresh as a vegetable and dried as a tea." [[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200013718]] |
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| "Totals of 28, 25, 17, and 16 volatiles were identified using GC-MS in the dried hot extract (DHE), dried cold extract (DCE), fresh hot extract (FHE), and fresh cold extract (FCE) samples, respectively. In terms of total GC-MS peak areas DHE ≫ DCE > FHE ≫ FCE. Nonanal, decanal, octanal, and 1-octen-3-ol were among the major volatiles in all 4 beverage types. Thirteen volatiles were common to all 4 teas. Furfural and 5-methyl furfural were detected only in dried hibiscus beverages whereas linalool and 2-ethyl-1-hexanol were detected only in beverages from fresh hibiscus... The most intense aroma volatiles were 1-octen-3-one and nonanal with a group of 4 aldehydes and 3 ketones common to all samples." \\ | "Calyxes from the Roselle plant (Hibiscus sabdariffa L.) were used to prepare cold (22 °C for 4 h) and hot (98 °C for 16 min) infusions/teas from both fresh and dried forms. Aroma volatiles were extracted using static headspace SPME and analyzed using GC-MS and GC-O with 2 different columns (DB-5 and DB-Wax). Totals of 28, 25, 17, and 16 volatiles were identified using GC-MS in the dried hot extract (DHE), dried cold extract (DCE), fresh hot extract (FHE), and fresh cold extract (FCE) samples, respectively. In terms of total GC-MS peak areas DHE ≫ DCE > FHE ≫ FCE. Nonanal, decanal, octanal, and 1-octen-3-ol were among the major volatiles in all 4 beverage types. Thirteen volatiles were common to all 4 teas. Furfural and 5-methyl furfural were detected only in dried hibiscus beverages whereas linalool and 2-ethyl-1-hexanol were detected only in beverages from fresh hibiscus... The most intense aroma volatiles were 1-octen-3-one and nonanal with a group of 4 aldehydes and 3 ketones common to all samples." \\ |
| [Ramírez‐Rodrigues, M. M., et al. "Hot and cold water infusion aroma profiles of Hibiscus sabdariffa: fresh compared with dried." Journal of food science 76.2 (2011): C212-C217] | [Ramírez‐Rodrigues, M. M., et al. "Hot and cold water infusion aroma profiles of Hibiscus sabdariffa: fresh compared with dried." Journal of food science 76.2 (2011): C212-C217] |
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| "The anthocyanins delphinidin-3-O-sambubioside (1) and cyanidin-3-O-sambubioside (2) were isolated by bioassay-guided purification. These compounds showed IC50 values (84.5 and 68.4 μg/mL, respectively), which are similar to those obtained by related flavonoid glycosides. Kinetic determinations suggested that these compounds inhibit the enzyme activity by competing with the substrate for the active site... The competitive ACE inhibitor activity... is in good agreement with the folk medicinal use of Hibiscus sabdariffa calyces as antihypertensive." \\ | "The anthocyanins delphinidin-3-O-sambubioside (1) and cyanidin-3-O-sambubioside (2) were isolated by bioassay-guided purification. These compounds showed IC50 values (84.5 and 68.4 μg/mL, respectively), which are similar to those obtained by related flavonoid glycosides. Kinetic determinations suggested that these compounds inhibit the enzyme activity by competing with the substrate for the active site... The competitive ACE inhibitor activity... is in good agreement with the folk medicinal use of Hibiscus sabdariffa calyces as antihypertensive." \\ |
| [Inhibition of angiotensin convertin enzyme (ACE) activity by the anthocyanins delphinidin-and cyanidin-3-O-sambubiosides from Hibiscus sabdariffa., Ojeda, D., Jiménez-Ferrer, E., Zamilpa, A., Herrera-Arellano, A., Tortoriello, J., Alvarez, L., Journal of ethnopharmacology, Vol.127(1), 2010, 7-10] | [Inhibition of angiotensin convertin enzyme (ACE) activity by the anthocyanins delphinidin-and cyanidin-3-O-sambubiosides from Hibiscus sabdariffa., Ojeda, D., Jiménez-Ferrer, E., Zamilpa, A., Herrera-Arellano, A., Tortoriello, J., Alvarez, L., Journal of ethnopharmacology, Vol.127(1), 2010, 7-10] |
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| "Calyxes from the Roselle plant (Hibiscus sabdariffa L.) were used to prepare cold (22 °C for 4 h) and hot (98 °C for 16 min) infusions/teas from both fresh and dried forms. Aroma volatiles were extracted using static headspace SPME and analyzed using GC-MS and GC-O with 2 different columns (DB-5 and DB-Wax). Totals of 28, 25, 17, and 16 volatiles were identified using GC-MS in the dried hot extract (DHE), dried cold extract (DCE), fresh hot extract (FHE), and fresh cold extract (FCE) samples, respectively. In terms of total GC-MS peak areas DHE ≫ DCE > FHE ≫ FCE. Nonanal, decanal, octanal, and 1-octen-3-ol were among the major volatiles in all 4 beverage types. Thirteen volatiles were common to all 4 teas. Furfural and 5-methyl furfural were detected only in dried hibiscus beverages whereas linalool and 2-ethyl-1-hexanol were detected only in beverages from fresh hibiscus. In terms of aroma active volatiles, 17, 16, 13, and 10 aroma active volatiles were detected for DHE, DCE, FHE, and FCE samples, respectively. The most intense aroma volatiles were 1-octen-3-one and nonanal with a group of 4 aldehydes and 3 ketones common to all samples. Dried samples contained dramatically higher levels of lipid oxidation products such as hexanal, nonanal, and decanal. In fresh hibiscus extracts, linalool (floral, citrus) and octanal (lemon, citrus) were among the highest intensity aroma compounds but linalool was not detected in any of the dried hibiscus extracts." \\ | |
| [Hot and cold water infusion aroma profiles of Hibiscus sabdariffa: fresh compared with dried., Ramírez‐Rodrigues, M.M., Balaban, M.O., Marshall, M.R., Rouseff, R.L., Journal of food science, Vol.76(2), 2011, C212-C217] | |
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| "Hibiscus sabdariffa anthocyanin extract can act as a prophylactic by intervening as a free radical scavenger both in vitro and in vivo as well as inducing the phase II drug detoxification enzymes." \\ | "Hibiscus sabdariffa anthocyanin extract can act as a prophylactic by intervening as a free radical scavenger both in vitro and in vivo as well as inducing the phase II drug detoxification enzymes." \\ |
