Fig. 4From: Fabrication and vibration characterization of curcumin extracted from turmeric (Curcuma longa) rhizomes of the northern VietnamPowder XRD patterns of curcumin samples N1, N2, N3, N4 and N5 with different extraction conditions. Bulk diffraction peaks for curcumin are indexed for identification purpose (JCPDS card 9-816 and CCDC 82-8842)Back to article page