Mass spectral analysis (gcms) gas chromatography and mass spectrometry of various volatile bioactive compounds in sonaka seedless raisins

Grape (Vitis sp.) belonging to Family Vitaceae is a commercially important fruit crop of India. Grapes are eaten as raw or they can be used for making wine, raisins, jam, and jelly, which are very nutritious and rich source of minerals like potassium, phosphorus, calcium, magnesium, other micronutrients and different vitamins. Raisins are dried fruits of certain varieties of grapevines with a high content of sugar and solid flash (Khair and Shah, 2005). Analysis of organic compounds by FT Raman spectrum of raisin. The Raman spectra of the films were recorded in the spectral range of 35–4000 cm−1 using a Raman spectrometer (Bruker Multi RAM, Germany Make). The Raman shift corresponds to the frequency of the fundamental IR absorbance band of the bond (Thygesen et al., 2003). It is known that specific chemical bonds (C-H, N-H, and C=O) generate specific peaks (Huang et al., 2010). Hence this technique proves to be a powerful technique which facilitates to determine molecular structure of spectral pattern of fingerprinting of sample.