Rose-hip tea: equilibrium and kinetic study of mineral ion extraction

Chen, Sau Soon; Spiro, M.

doi:10.1016/0308-8146(93)90219-6

Cited by 13 publications

(3 citation statements)

References 11 publications

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“…Fourteen Pb 0.3 mg/kg and Cd 0.1 mg/kg and were detected in tea (prepared from 0.5 g rose hip in 25 mL water for 30 min at 95°C) in percentages of 6%, 72%, 14%, 4%, 20%, 28%, 60%, 25%, 52%, 25%, 66%, 27% and not dectectable, respectively (Basgel and Erdemoglu, 2006). Chen and Spiro (1993) determined the concentrations of nine inorganic and organic cations and anions by ion chromatography in a German rose hip tea. The major cation present was potassium (1.16%) followed by calcium (0.6%), sulphate (0.21%), sodium (0.18%) and magnesium (0.15%).…”

Section: Introductionmentioning

confidence: 99%

Systematic review on the Rosa canina effect and efficacy profiles

Chrubasik

Roufogalis

Müller‐Ladner

et al. 2007

Focus on Alt & Comp Therapy

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Rose hip, rose hip and seed and rose hip seed, all were negatively monographed by the German Commission E due to insufficient evidence of effects and effectiveness. Therefore a comprehensive review of the literature was conducted to summarize the pharmacological and clinical effects of Rosa canina L. to reevaluate its usefulness in traditional medicine.For various preparations of rose hip and rose hip and seed, antioxidative and antiinflammatory effects have been demonstrated. Lipophilic constituents are involved in those mechanisms of action. The proprietary rose hip and seed powder Litozin R has been employed successfully in a number of exploratory studies in patients suffering from osteoarthritis, rheumatoid arthritis and low back pain. However, the sizes of the clinical effects for the different indications need to be determined to assure clinical significance.There is also a rationale behind the use of Litozin R as part of a hypocaloric diet based on the rose hip probiotic, stool regulating and smooth muscle-relaxing actions, as well as the rose hip seed lipid-lowering, antiobese and antiulcerogenic effects. Further research is needed to clarify the importance of the reported promising experimental effects in clinical use and to characterize the optimum rose hip seed oil preparation for topical use in the treatment of skin diseases.

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Section: Introductionmentioning

confidence: 99%

Systematic review on the Rosa canina effect and efficacy profiles

Chrubasik

Roufogalis

Müller‐Ladner

et al. 2007

Focus on Alt & Comp Therapy

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“…Auûerdem enthalten Hagebutten die Vitamine B 1 , B 2 , E, K, P und folgende Karotenoide: Lycopen, Rubixanthin, û-Karotin, Zeaxanthin, Lutein und û-Chryptoxanthin [7]. Ferner ist die Hagebutte reichhaltig an wichtigen Mineralstoffen und Spurenelementen, vor allem Kalium und Kalzium [8]. Schlieûlich enthält sie den Gerbstoff Tanin sowie Pektin und Flavonoide.…”

Section: Allgemeine Beschreibung Der Hagebutteunclassified

Bedeutung der Komplementärmedizin am Beispiel der Hagebutte

Rossnagel¹,

Willich²

2001

Gesundheitswesen

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Rose-hips develop from blossoms of the wild rose (rosa canina) and are a popular natural remedy. Laboratory experiments have shown that rose-hip extract inhibits lipid oxidation in vitro and reduces the chemotaxis and chemoluminescence of leucocytes. In clinical studies serum CRP- und creatinine level declined in healthy subjects and patients with osteoarthritis under rose-hip treatment. Additionally patients suffering from osteoarthritis reported that physical symptoms declined. Data from a randomised controlled trial indicate not only that pain significantly declined but also flexion of the hip improved in the active treatment group. The anti-inflammatory properties of rose-hip are useful as a natural treatment in patients with osteoarthritis. It remains to be proven which of the components are responsible for these effects. There is some evidence that in addition to the high vitamin content flavonoids may be actively involved.

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“…The above theory predicts that the data will fall on a straight line which passes through the origin. Many experimental studies have since found that although an acceptable linear fit is usually obtained, the line of best fit often misses the origin by a significant amount 3–15. The data are therefore commonly fitted to a revised expression, namely where a is a constant.…”

Section: Introductionmentioning

confidence: 99%

Modelling the kinetics of tea and coffee infusion

Stapley

2002

J Sci Food Agric

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Data from infusion experiments with tea and coffee are commonly fitted to an equation derived by Spiro from a lumped parameter mass transfer model. However, this equation is generally modified by adding an intercept term in order to achieve acceptable fits to data. Spiro has since reported a Fick's second law analysis using a 'long-time approximation' which yields the same form as the modified fit equation, including the non-zero intercept term. This successfully predicts the high initial rates of mass transfer due to high initial concentration gradients at the surface of the solid. In this paper the value of the intercept is evaluated for both tea leaf (infinite slab) and coffee particle (sphere) geometries under combined boundary conditions of non-zero interfacial mass transfer resistance and finite volume of extracting solution. Predicted intercepts are similar to experimental values reported in the literature; however, the analysis suggests that fits to data should ignore 'early' points where the solution concentration is less than 35% of its final value. This may not be the case with some literature values and this limits the conclusions that may be drawn from them. Solute diffusivities calculated from the observed rate constant using this model differ slightly from those obtained using the original Spiro method.

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Rose-hip tea: equilibrium and kinetic study of mineral ion extraction

Cited by 13 publications

References 11 publications

Systematic review on the Rosa canina effect and efficacy profiles

Systematic review on the Rosa canina effect and efficacy profiles

Bedeutung der Komplementärmedizin am Beispiel der Hagebutte

Modelling the kinetics of tea and coffee infusion

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