Table 1 Experimental Raman (crystalline powder) spectral data of curcumin in frequency region 1700–900 cm⁻¹

Peak assignment

ν

ν

ν

ν

ν

ν

ν_Cur

ν_Cur

ν_Cur

ν

ν

ν_Cal.

_{Cur N1}

_{Cur N2}

_{Cur N3}

_{Cur N3-1 6 months later}

_{Cur N4}

_N6

_N8

_N9

_N10

Mangolim et al. (2014)

Kolev et al. (2005)

Kolev et al. (2005)