@article {1463, title = {Quality Control Standardization and In-Vitro Antioxidant Activity of Aganosma dichotoma K. Schum Root}, journal = {Pharmacognosy Journal}, volume = {7}, year = {2015}, month = {27th Nov, 2014}, pages = {74-82}, type = {Original Article}, chapter = {74}, abstract = {

Introduction: Aganosma dichotoma K. Schum (AD) is a large climber with very stout stem belonging to the family Apocynaceae. The Plant has significant medicinal value as described in traditional system of medicine. The objective of the present study is to scientifically develop a standard monograph for AD on the basis of its pharmacognostical and phytochemical aspects. Methods: The study includes quality control standardization as per the standard methods provided in World Health Organization for standardization of medicinal plants. Fluorescence drug analysis, preliminary phytochemical screening of different fractions, quantification of some phytoconstituents and in-vitro antioxidant activity were also carried out. Quantification of Quercetin in the ethanolic extract of A. dichotoma was determined by HPTLC analysis. The ethanolic extract of root of A.dichotoma was subjected to in-vitro antioxidant activity. Results: The diagnostic characters of A.dichotoma root were evaluated on the basis of macroscopical and microscopical characters. Physicochemical parameters were evaluated such as 6.7\% w/w loss on drying with; ash values (in \% w/w): 13.75 total ash, 5.75 acid-insoluble ash, 3.6 water-soluble ash; Extractive values (\% w/w): 12.75 water, 11.82 ethanol, 2.26 ethyl acetate, 3.13 chloroform, and 3.16 pet ether; foaming index 181.81; swelling index 3.2 ml/g; hemolytic activity 227.89 unit/gm of powder drug and crude fiber content was 19.4\%. Total numbers of starch grain in 1 mg of root powder were 2,49,981. Quantification of quercetin in the ethanolic extract was assessed by HPTLC analysis and was found to contain 2.40\%, w/w. Conclusion: The parameters determined in the present study may provide necessary information for identification and authentication of plant material.

Key words:Aganosma dichotoma, HPTLC, in-vitro antioxidant activity, Pharmacognosy.

}, keywords = {Aganosma dichotoma, HPTLC, in-vitro antioxidant activity, Pharmacognosy}, author = {Deepali Pandey and Apurva Joshi, and Hemalatha, S.} } @article {1548, title = {Pharmacognostical and phytochemical standardization of Houttuynia cordata Thunb.: A potent medicinal herb of North{\textendash}Eastern India and China}, journal = {Pharmacognosy Journal}, volume = {6}, year = {2014}, month = {18th Feb,2014}, pages = {34-42}, type = {Original Article}, abstract = {

Aim:Houttuynia cordata Thunb. (Saururaceae) is one of the perennial herb indigenous to North-East India and China. Despite the popular utilization of this herb as medicine, still no study has been reported so far regarding the pharmacognostical standardization. Thus, the aim of the present study was to scientifically establish a standard monograph on the basis of pharmacognostical and phytochemical aspects. Methods: The quality control standardization of H. cordata was done as per the methods described in the World Health Organization guidelines (2002). Results: The diagnostic characters of the H. Cordata leaf and rhizome portion were evaluated based on the macroscopical and microscopical characters. Determination of various physicochemical parameters such as water soluble ash (1.12\% w/w), acid insoluble ash (4.02\% w/w), sulphated ash (3.15\% w/w), alcohol soluble extractive (12.8\% w/w), water soluble extractive (14.9\% w/w), loss on drying (3.42\% w/w) and crude fibres content (13.10\% w/w) was ascertained. Heavy metal, microbial load, fluorescence drug analysis, and preliminary phytochemical screening of different fractions were also carried out. Total phenols (45.74 mg/g tannic acid equivalent, TAE), tannins (33.29mg/g TAE), flavonoids (104.55 mg/g rutin equivalent, RE), and flavonols (17.16mg/g RE) were quantified from the ethanolic extract of the whole plant. Quantification of quercetin in the ethanolic extract was assessed by HPTLC analysis and was found to contain 4.39\%, w/w. Conclusion: The obtained qualitative and quantitative standards will provide referential information for correct identification and standardization of this medicinal plant.

Key Words: Houttuynia cordata, pharmacognosy, quercetin, HPTL.

}, keywords = {Houttuynia cordata, HPTLC, Pharmacognosy, Quercetin}, author = {Manish Kumar, and Satyendra K. Prasad, and Damiki Laloo, and Apurva Joshi, and Siva Hemalatha} }