Fossilized resin, or amber, has been examined from 120 worldwide sources by 1D and 2D proton magnetic resonance spectroscopy in solution. These spectra fall into five categories, corresponding to the classes already established by mass spectrometry and carbon-13 magnetic resonance spectroscopy. The wide availability of this technique provides a straightforward method to classify amber rapidly and inexpensively.

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This paper is describing the different types of milk adulteration and the conventional methods which are being used for milk adulteration. To detect the milk adulteration different type of conventional method were identified in past. But in recent past nonconventional methods are being introduced by researched to detect the milk adulteration. Also, it compares all of these methods for detecting the different type of milk adulteration.