19 research outputs found
Controlling concentration of bioactive components in cat's claw based products with a hybrid separation process
Full text linkPart I. Structural studies on the Bi[subscript 2]O[subscript 3]-Nb[subscript 2]O[subscript 5] system ; Part II. Studies on some novel fluorite-type superstructures ; Part III. The crystal structure of dicalcium nitride
No full textImperial Users onl
Rechnerische und experimentelle Untersuchungen zur Kenntnis der Metadyne als Umformer von konstanter Spannung auf konstanten Strom
No full textRechnerische und experimentelle Untersuchungen zur Kenntnis der Metadyne als Umformer von konstanter Spannung auf konstanten Strom
No full textObservation of domain wall motions in alanine doped triglycine sulphate ferroelectric crystal
No full textBeitrag zur Berechnung der Staberw�rmung eines Asynchronmotors mit Hochstab beim blockierten L�ufer
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Investigation of BaTiO3 and Gd2(MoO4)3 crystal surfaces by complementary AES and ISS techniques
No full textControlling concentration of bioactive components in cat's claw based products with a hybrid separation process
No full textSupercritical fluid extraction (SFE) with and without entrainer combined with organic solvent extraction was used for fractionation of bioactive natural products as alkaloids and antioxidants from cat's claw (Uncaria tomentosa (Willd.) DC.) bark. Extracts obtained from this plant have a number of beneficial effects, including anti-inflammatory or immune stimulator. The aim of this work was to obtain extracts of enriched and limited alkaloid concentrations, good antioxidants and tannin agents. The results demonstrated that a hybrid process involving SFE is a selective method to obtain an oxindole alkaloid rich fraction (186.0 ± 3.2 mg total pentacyclic oxindole alkaloids/g extract) and a product enriched in tannins (23.8 ± 1.9% tannin content in extract) and antioxidants (IC50 = 5.88 ± 0.54 μg/ml extract)
