Pharmacognostic Investigation of Punica granatum L. Peel

Abstract

Punica granatum L. (pomegranate) peels are used extensively to cure numerous pathologies and have wide industrial significance. However, to strengthen the efficacy, reproducibility and quality, the correct identification is required. Thus, the current study provides a detailed description of pharmacognostical features viz., macroscopic, microscopic and fluorescence behavior of peel of P. granatum. In macroscopic analysis, the peels were observed to be dark reddish brown with concavo-convex shape. The external surface has woody appearance with membranous wall on inner side. The transverse section displayed the existence of thick cuticle followed by collenchyma cells forming epicarp. The mesocarp was seen to be multi-layered consisting of parenchymatous cells. The peel powder exhibited a faint aromatic odor and astringent taste. The powder microscopy revealed the presence of different types of stone cells, xylem vessels and prismatic calcium oxalate crystals. The peel demonstrated characteristic fluorescence in response to reaction with standard chemical reagents. The present study supplements the pharmacognostic documentation of Punica granatum L. peel to claim its authentication and quality.