Chemical composition of two varieties of sorrel (Hibiscus sabdariffa L.), calyces and the drinks made from them

Nnam, N. M.; Onyeke, Nkechi G.

doi:10.1023/b:qual.0000040310.80938.53

Cited by 26 publications

(27 citation statements)

References 7 publications

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“…The calyces and drinks made from Hibiscus sabdariffa L. were reported to contain carbohydrates, iron, ascorbate, and β-carotene from analysis using colorimetric methods and as reported by the AOAC (Association of Official Analytical Chemists) [8]. The aim of this study is to extend our knowledge and report preliminary results on the oil composition of red tea's 47 components, representing 97% of the oil.…”

Section: From Yunnan Chinamentioning

confidence: 94%

Essential oil composition of Hibiscus sabdariffa from Yunnan, China

Zhang

Wang

2007

Chem Nat Compd

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Section: From Yunnan Chinamentioning

confidence: 94%

Essential oil composition of Hibiscus sabdariffa from Yunnan, China

Zhang

Wang

2007

Chem Nat Compd

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“…The seeds are somewhat bitter but have been grounded to a meal for human food in Africa and have also been roasted as a substitute for coffee (Seiyaboh et al, 2013). Red calyces (based on 100 g dry weight) contain 6.4 % protein, 79.3 % carbohydrates, 5.1 % fat, 2.7 % crude fiber, and 6.5 % ash (Nnam and Onyeke, 2003). Roselle is one of the most important and popular medicinal plant which has several properties.…”

Section: Introductionmentioning

confidence: 99%

Effects of inter and intra row spacing on growth, yield and yield components of Roselle (Hibiscus sabdariffa L.)

Degu

Tesfaye

2016

Int J Adv Biol Biom Res.

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A field experiment was conducted to assess the optimum inter-and intra-row spacing on growth, yield and yield component of Roselle (Hibiscus sabdariffa L.) in 2014/15 cropping season at Wondo Genet Agricultural Research Center experimental site (at Wondo Genet station). Two inter-row spacing (60 and 90 cm) and three intra-row spacing (30, 60 and 90 cm) were evaluated using two varieties, WG-Hibiscus-Jamaica and WG-HibiscusSudan on a plot size of 3.6 m length x 4.2 m width. The experimental design was a randomized complete block design in factorial arrangement with 12 treatments in three replications. SAS (version 9) software was used to compute the analysis of variance. The results revealed that varieties differed markedly in most of the studied parameters. Of the two varieties tested, variety WG-Hibiscus-Jamaican showed greater plant height, number of branches per plant, number of leaves/plant, leaf area, leaf area index, days to 50 % flowering, days to 95 % maturity, number of capsules/plant, fresh calyx yield/plant, dry calyx yield/plant, seed yield/plant, total number of capsules/ha, total fresh calyx yield/ha, total dry calyx yield/ha and total seed yield/ha. In contrast, variety WGHibiscus-Sudan matures earlier and had heavier 1000 seed weight than variety WG-Hibiscus-Jamaican. The present study demonstrated that, the highest total fresh and dry calyx yield/ha were recorded when WG-Hibiscus-Jamaica and WG-Hibiscus-Sudan were planted at inter-row spacing of 60 cm and intra-row spacing of 30 cm.

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“…The calyxes of karkade are rich in bioactive compounds including organic acids, phenolic compounds, vitamin A and vitamin C [2], flavonoid (anthocyanins), gossypetin, quercetin, pectin [3], saponins, glycosides, and alkaloids [4]. Additionally, Nnam and Onyeke [5] mentioned that calyxes contain 6.4% protein, 79.25% carbohydrates, 5.13% fat, 2.7% crude fiber, and 6.52% ash. Fresh or dried calyxes of karkade have been used traditionally as herbal drinks (cold and hot) because karkade has different therapeutic properties such as anticancer, antiviral, antifungal, antibacterial, antioxidant, antidiabetic, antihypertensive, antihyperlipidemia (anticholesterol), antiobesity, antispasmodic, and antitumor effects, decreasing the viscosity of the blood and stimulating intestinal peristalsis, and can be used to treat sore throats, coughs, and genital problems and it has also nephro/hepatoprotective and renal/diuretic effect and so forth [6].…”

Section: Introductionmentioning

confidence: 99%

Influence of Multiwalled Carbon Nanotubes and Biostimulators on Growth and Content of Bioactive Constituents of Karkade (Hibiscus sabdariffa L.)

Al-Rekaby

2018

Journal of Botany

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This work was carried out to evaluate the effect of different concentrations of multiwalled carbon nanotubes (MWCNT), 0, 500, and 1000 mg/L, and biostimulators (Delfan plus), 0 and 10 ml/L, and their interactions (sprayed on the plant shoot and soil until the complete wetness) on growth and production of bioactive constituents of karkade (Hibiscus sabdariffa L.) planted in plastic pots. After finishing experiment, growth parameters (length of shoot and root, number of leaves, branches, and fruits, chlorophyll content, and dry weight of calyces yield) were measured and also the active compounds of aqueous extracts calyces were measured by Gas Chromatography-Mass Spectrometry (GC-MS). The obtained results explained that the experimental treatment caused a significant increase in all measured parameters. GC-MS analysis shows quantitative and qualitative alterations of bioactive constituents of water extract from calyxes of karkade, where plant production of 60 active compounds at the combination of 1000 mg/L of MWCNT and 10 ml/L of Delfan plus was compared to untreated plants which produced 4 only.

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Chemical composition of two varieties of sorrel (Hibiscus sabdariffa L.), calyces and the drinks made from them

Cited by 26 publications

References 7 publications

Essential oil composition of Hibiscus sabdariffa from Yunnan, China

Essential oil composition of Hibiscus sabdariffa from Yunnan, China

Effects of inter and intra row spacing on growth, yield and yield components of Roselle (Hibiscus sabdariffa L.)

Influence of Multiwalled Carbon Nanotubes and Biostimulators on Growth and Content of Bioactive Constituents of Karkade (Hibiscus sabdariffa L.)

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