INTERNATIONAL RESEARCH JOURNAL OF CHEMISTRY <ul> <li class="show"><span style="text-decoration: underline;"><strong>ISSN 2321-2845 (Online) ISSN 2321-3299 (Print)</strong></span></li> <li class="show">INTERNATIONAL RESEARCH JOURNAL OF CHEMISTRY is an international open access online &amp; print&nbsp; journal, world wide abstract listed, published quarterly&nbsp; with ISSN, Free- membership, download and access. This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.</li> </ul> <p><!-- Google Tag Manager --></p> <p>&nbsp;</p> PAAVAN EDUCATION TRUST en-US INTERNATIONAL RESEARCH JOURNAL OF CHEMISTRY 2321-3299 1. ISOLATION AND CHARACTERIZATION OF SESQUITERPENE LACTONES FROM THE GENUS AMBERBOA by RUCHI SINGH AND DURGA K. MEWARA <p><em>Amberboa divaricata </em>Kuntze (syn. <em>Amberboa ramosa </em>(Roxb.) Jafri = <em>Volutarella divaricata </em>Benth. et Hook.f. = <em>Tricholepis procumbens </em>Wight) belongs to the family Asteraceae and tribe-Cynareae. Asteraceae is the second largest family of the flowering plants and comprises of about 1100 genera and more than 20,000 species. Various sesquiterpene lactones especially guaianolides have been isolated from this genus. Some of these have a-methylene-g-lactone moiety which is essential for cytotoxic activity. The present work deals with the chemical investigation of the aerial parts of <em>Amberboa divaricata </em>and reports the isolation of lupeol acetate, stigmasterol, b-sitosterol, lupeol, aguerin-B, cynaropicrin, desacylcynaropicrin, betulinic acid and b-sitosterol-D-glucoside.</p> <p><strong><em>KEYWORDS:</em></strong> <strong><em>Amberboa divaricata Kuntze </em></strong><em>; Asteraceae , Triterpenoids , Steroids</em>.</p> RUCHI SINGH AND DURGA K. MEWARA ##submission.copyrightStatement## 2018-10-01 2018-10-01 23 01 to 09 01 to 09 2. ASSESSING SOIL PHYSICO-CHEMICAL STATUS OF SAHASTRADHARA LIMESTONE MINE AREA, DOON VALLEY, SHIVALIK HIMALAYAS by MAYANK DUBEY1, PRAMOD KUMAR2, SHAHIDA PARVEEN3,SANDEEP ROUT3 AND SITANSHU SEKHAR PATRA4 <p>The present study was conducted on assessing soil physico chemical status of Sahastradhara limestone mine area, Doon valley, Shivalik Himalayas at different soil depth (0-15 and 15-30 cm) of four different sites. The analyzed indicate the soil Ph was acidic in all sites. There was an urgent need for rehabilitating of the degraded land and to restore the ecosystem. The results indicate that each range shows a close affiliation to variable soil properties.</p> <p><strong><em>KEYWORDS:</em></strong> <em>Electrical Conductivity (E.C), pH, Soil Organic Carbon (SOC)</em>.</p> SANDEEP ROUT3 ##submission.copyrightStatement## 2018-10-01 2018-10-01 23 10 to 17 10 to 17