Low-oxygen fine milling production process of peanut butter

Abstract

The invention discloses a low-oxygen fine milling production process of peanut butter. The production process comprises the following steps of: (1) inspecting raw materials; (2) screening and grading; (3) carrying out metal detection; (4) continuous roasting; (5) peeling at a low temperature; (6) selecting a color; (7) sorting; (8) preparing nitrogen; (9) milling butter; (10) fine milling for a second time; (11) filling in vacuum; and (12) sticking labels, spraying codes and putting in storage. According to the low-oxygen fine milling production process, nitrogen is continuously replenished to a milling line and a packaging line through a nitrogen making machine to realize low oxygen of key procedures so as to reduce the acid value and the peroxide value, suppress an aerobic environment for harmful microorganisms to survive, effectively prevent the oxidation and corruption of peanut oil, maintain the taste of a product, improve the sanitary safety of the product and guarantee the product quality; and meanwhile, the process has the advantages of short milling time, high milling fineness, low investment cost, high added value, stable product quality and simple operation.

Description

technical field [0001] The invention relates to the technical field of food production, in particular to a low-oxygen refined grinding production process for peanut butter. Background technique [0002] Peanut butter is a convenient and high-nutrition non-staple food made from peanut kernels through technological processing. At present, the production process of peanut butter in China usually goes through the processes of screening, roasting, peeling, sorting, grinding, etc., and then through seasoning. As a result, this process has the following problems: it cannot effectively control harmful microorganisms and their derivative environment, resulting in easy deterioration of the product, short storage time, and low quality; the degree of oxidation of peanut oil and the large amount of dissolved and adsorbed oxygen in the grinding process cause the loss of product nutrition ; Grinding is fine and coarse, and the product types are single. At present, peanut butter production ...

AI Technical Summary

Problems solved by technology

[0002] Peanut butter is a convenient and high-nutrition non-staple food made from peanut kernels through technological processing. At present, the production process of peanut butter in China usually goes through the processes of screening, roasting, peeling, sorting, grinding, etc., and then through seasoning. As a result, this process has the following problems: it cannot effectively control harmful microorganisms and their derivative environment, resulting in easy deterioration of the product, short storage time, and low quality; the degree of oxidation of peanut oil and the large amount of dissolved and adsorbed oxygen in the grinding process cause the loss of product nutrition ; Grinding is fine and coarse, and the product types are single. At present, peanut butter production is divided into three categories: fine peanut butter (0.1-0.6mm), medium peanut butter (0.4-2.5mm), and rough peanut butter (0.5-7mm). These three types directly affect the quality and market value of the product. Generally, the finer the peanut butter, the higher the market price. Grinding is the main factor affecting the fine grade of peanut butter, but the existing grinding production process cannot continue to improve the fineness. It affects the quality and market value of the product, and fails to effectively develop the nutritional value and potential added value of peanuts

[0003] However, in the production of peanut butter in some developed countries abroad, carbon dioxide is used to reduce the oxygen content in grinding and canning, so as to isolate the aerobic environment derived from harmful microorganisms, and at the same time achieve the purpose of reducing the degree of oxidation of peanut oil and the dissolved and adsorbed amount of oxygen. The production process solves some problems in the domestic production process, but there are many problems such as high production cost, complicated production process operation, and easy to produce secondary pollution in the production process.

[0004] It can be seen from the above analysis that in the current production of peanut butter at home and abroad, there are many problems such as poor quality and low added value when the input cost is low, but the quality and added value are improved, the production cost is too high, and the process is difficult to control. The production of the product needs a production process with low input cost, high added value, stable product quality and simple operation, but there is no relevant report in the prior art

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