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ABSTRACT Orthosiphon aristatus (Lamiaceae) is an herb medicinal found mainly in China, Indian and South East Asia. The purpose of this work was to develop a technological process for obtaining dry extract of Orthosiphon aristatus by spray dry. A process for the obtaining of dry extract from aqueous extract of Orthosiphon aristatus was studied. Response Surface Methodology experimental design was applied to evaluate the effects of inlet and outlet air temperature on drying yield (%). Mixture experimental design was applied to evaluate the drying adjuvant - total solids relation. Maltodextrin was evaluated as drying adjuvant. The best results were obtained when applying an inlet temperature of 120 °C and outlet temperature of 80 °C and a drying adjuvant - total solids relation (w/w) of 60:40. Under these conditions it was demonstrated that the process is reproducible scale studied.
Subject(s)
Plant Extracts/analysis , Orthosiphon/classification , Plants, MedicinalABSTRACT
Objective: To study three different extraction processes of the content of total flavonoids in Chrysanthemum indicum and their anti-oxidant activities. Methods: The reflux, ultrasonic, and tissue-breaking methods were used for extracting the total flavonoids from C. indicum, which were determined by UV spectrophotometry, and the anti-oxidant activity was determined by flow injection chemiluminescence. Results: The contents of total flavonoids obtained using various methods, such as reflux, ultrasonic, and tissue- breaking, were 12.60, 11.02, and 10.95 mg/g, and their IC50 were 2.67, 3.43, and 5.13 μg/mL, respectively. Conclusion: The research indicates that the reflux extraction method is applied to isolatting the total flavonoids from C. indicum, with the advantage of high extraction efficiency, and the total flavoniods show the strong anti-oxidant activity.
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Abstract: In this article, we report a study of assay of sesquiterpene lactones (alantolactone, isoalantolactone) in plant extraction derived by ultrasound-assisted extraction, оrthogonal test design and reflux extraction from medicinal plant’s composition (Salsola laricifolia turcz.e litv+Inula helenium). High-performance liquid chromatography (HPLC) method was used for determination of the contents of alantolactone and isoalantolactone in the investigated extracts. The result shown that the amount of alantolactone was 0.64±0.03%, and isoalantolactone 0.59±0.01% in the plant extraction derived by reflux condensation extraction. Key words: Alantolactone, Isoalantolactone, HPLC, Salsola laricifolia turcz.ex litv, Inula helenium, Reflux method, Ultrasound- assisted extraction.
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OBJECTIVE:To discuss the improvement in Soxhlet extraction with ore and shell hard Chinese meteria madica taking Plastrum Testudinis as example.METHODS:On the basis of normal Soxhlet extracter,larger Soxhlet extracter on Plastrum Testudinis was experimented using saturated salt-water-bath,quadruplicity cover circle and timer.Large Soxhlet extracter was compared with normal Soxhlet extracter and stirring-reflux method by HPLC analysis,yield and clearance rate of DPPH.RESULTS:There were no significant difference between normal and larger Soxhlet extracters,but the stirring-reflux method was inferior to these two methods.CONCLUSION:The improved larger Soxhlet extraction is a thorough,high-efficient,convenient,economical and healthy extracting method for ore and shell hard Chinese materia medica.