Spices are very popular for their characteristics, aroma, and unique taste; and spices processing businesses are serving the market with a great variety of products. In recent times, the demand for processed products has increased in spices, and it showed the industry the benefits of innovating new grinding techniques, like cold processing or cryo-grinding of spices. It is a grinding or pulverization method of spices carried out at -150 °C to absolute zero temperatures, using the cryogenic fluids especially liquid nitrogen. This technique makes the spices nature and values intact and improves the quality of the final product. Due to the use of liquid nitrogen as a cryogen, the spices can ground below fragile or brittle point temperature, which preserves their sensory and nutritional qualities. Therefore, cryogenic grinding is considered as a better method than traditional grinding methods, and it is the only reason for the growing demand of cold processed or cryo-grinding spices, in the international market.
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