Development of α-glucosidase inhibitor from medicinal herbs Colorimetric Method in the Determination of 1-Deoxynojirimycin Isolated from the Mutant Strain of Bacillus subtilis Studies on the Chemical Constituents from the Stems of Chukrasia tabularis and Their α-Glucosidase Inhibitory Activity Qualitative and Quantitative Analysis of Diterpenoid Compounds in Sphagneticola trilobata (L.) Pruski