Spice powder extrusion and sterilization method

Abstract

The invention relates to a spice powder extrusion and sterilization method comprising the following steps of: (1) preheating a twin-screw extruder; (2) uniformly mixing spice powder, a carrier and water with a mixer for later use; (3) feeding mixed materials in step (2) in the feeding hopper of the extruder, starting screws, adjusting the rotating speed of the screws to be 50 to 200 revolutions / minute, feeding at a constant speed, controlling the feeding speed at 20 to 100kg / h, transmitting and extruding the mixed materials in the extruder and extruding out through the die opening of the extruder; and (4) cooling extruded reaction materials to a room temperature, grinding with a grinder and sieving to obtain the spice powder. According to the method, bacteria can be killed and the cooking features of spices can also be improved. The losses of volatile spice components are much less than that resulting from the traditional heating and sterilization method. The method can meet the requirement for spice production.

Description

technical field [0001] The invention relates to a processing method of spices, in particular to a method for extruding and sterilizing spice powders. Background technique [0002] Different spices can be sterilized according to their flavor, color, microorganism, shape and other characteristics. At present, irradiation is mostly used for sterilization, but it has a relatively large impact on the maintenance of the color of spices, and it will be restricted when exported. Many condiment companies in my country use irradiation to sterilize spices. Although the cost is low, it will cause the problem of residues of irradiation products. Although the safety of irradiated food is still inconclusive, many consumers are still skeptical about the safety of such food and have concerns when purchasing. Moreover, irradiation will also have adverse effects on the color, aroma and other flavor quality of many foods, such as fading the color of the processed food, deteriorating the taste...

AI Technical Summary

Problems solved by technology

Although the safety of irradiated food is still inconclusive, many consumers are still skeptical about the safety of such food and have concerns when purchasing

Moreover, irradiation will also have adverse effects on the color, aroma and other flavor quality of many foods, such as fading the color of the processed food, deteriorating the taste, and deteriorating the smell, etc.

There are many export-oriented enterprises producing instant rice and quick-frozen food in my country, which need to use a large amount of spices as raw materials. Since Japan and the European Union prohibit or strictly restrict the import of irradiated food and foods containing irradiated seasoning, these export-oriented enterprises are forced to use The consequence of purchasing high-priced non-irradiated spices abroad is to increase the purchase cost and transportation time, and reduce the market competitiveness of the product

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