阅读说明：本技术 一种蒸汽热处理谷类制作雪糕的方法 (Method for making ice cream bar by steam heat treatment of cereals ) 是由 不公告发明人 于 2018-06-20 设计创作，主要内容包括：本发明公开了一种蒸汽热处理谷类制作雪糕的方法。由于谷类中的不溶性膳食纤维含量过多,限制了谷类的食用品质。本发明采用蒸汽热处理技术即通过高温、高压、短时瞬间处理谷类原料,可以有效降低不溶性膳食纤维含量,并能显著提高谷类中可溶性膳食纤维和可溶性糖类等物质的含量。经过蒸汽热处理的麦麸原料,放入胶体磨中研磨,得到谷类胶体原浆,分别按谷类原浆的添加量占50%~80%的比例添加到混合物中,经灭菌,均质,成型等过程后得到成品。经实践证明,谷物雪糕的适口性和连食性显著增加。本发明中采用的蒸汽热处理谷类制作雪糕,降低了雪糕加工成本,拓宽了谷类在食品加工中的应用。(The invention discloses a method for making ice cream by steam heat treatment of cereals, which limits the eating quality of cereals by excessive content of insoluble dietary fiber, the invention adopts a steam heat treatment technology, namely instantly treating cereal raw materials at high temperature, high pressure and short time, can effectively reduce the content of insoluble dietary fiber, and can obviously improve the content of soluble dietary fiber, soluble saccharide and other substances in cereals.)

1. A method for making ice cream bars by steam heat treatment of cereals is characterized in that: (1) performing steam heat treatment on cereals, and grinding by using a colloid mill to prepare cereal raw pulp; (2) adding into ice cream according to different addition amounts to make into cereal ice cream with steam heat treatment.

2. The method of making ice cream bar of claim 1, wherein the steam heat treatment comprises soaking cereals of uniform size and without deterioration in quality in distilled water for 0.5 ~ 3h, placing into a steam tank, introducing saturated steam under 0.2 ~ 1.2.2 MPa for 0.1 ~ 10 min, rapidly depressurizing, and collecting the cereals discharged from the discharge port.

3. The method of claim 1, wherein the drying step comprises grinding the grains of claim 2 in a colloid mill with water 30% ~ 50%, water temperature controlled at 20 deg.C ~ 50%, grinding for 30min ~ 60min, and collecting the primary colloid pulp.

4. The method of making ice cream bar of claim 1, wherein said cereal bar is prepared by the steps of:

(1) adding 30% ~% cereal colloid primary pulp into 0.1% ~.5% xanthan gum, 0.25% ~.75% CMC-Na and 10% ~% white granulated sugar under the condition of uniformly stirring, continuously heating and stirring until they are completely dissolved, (2) adding 0% ~% whole milk powder and 2% ~% fresh egg pulp into a container, heating to 50 deg.C ~ deg.C under the condition of uniformly stirring, filtering, adding into xanthan gum cereal primary pulp, continuously stirring until they are uniformly mixed, (3) continuously heating to 80 deg.C ~ deg.C, holding for 15min ~ min, sterilizing, 4) cooling sterilized mixed liquor to 50 deg.C ~ deg.C, homogenizing under 20MPa ~ MPa, (5) immediately placing the homogenized mixed liquor into cold storage chamber, quickly cooling to 2 deg.C ~ deg.C, holding for 2h ~ h, ageing, increasing viscosity, adding into aged mixed liquor, quickly freezing at 1.C to 2% or below, quickly freezing at 6857%, and controlling the solidification rate of cereal essence to be not more than 1.C, and quickly freezing at 68530% and 2% ageing.

5. The method of making ice cream bar of steam heat treated cereal as in claim 1, wherein said cereal comprises: oat, buckwheat, corn, sorghum, millet, mung bean, red bean, soybean and the like.

Technical Field

The invention belongs to the field of food processing, and particularly relates to a method for making ice cream by treating cereals through steam heat.

Background

Ice cream (ice cream), called ice cream/ice cream in national language, is a frozen milk dessert. It needs to be stored in a freezing way. Nowadays, more and more people begin to pay attention to diet health, advocate green healthy diet and have been widely accepted by modern people, however, the high fat, high calorie and high cholesterol of traditional ice cream bar make modern people to be in the way of being forbidden, especially for patients suffering from hyperlipidemia, coronary heart disease and the like. Meanwhile, the main raw material of the traditional ice cream is skimmed milk powder or whole milk powder, and the cost of the traditional ice cream is continuously increased along with the continuous increase of the price of the raw material. These factors severely restrict the development of the traditional ice cream industry.

The cereal grains contain protein between about 8-12% and because the outer layer of the grain has a higher protein content than the inner layer, the refined rice and flour have a reduced protein content compared to the crude rice and flour because of the excessive removal of the husk.

The content of fat in cereals is small, about 2%, and it is mainly present in the aleurone layer and the cereal germ. Mostly unsaturated fatty acids, with a small amount of phospholipids. The embryo bud oil contains abundant vitamin E, and has antioxidant effect.

Cereals contain a large amount of carbohydrates (about 70-80%) and mostly starch. The starch of cereals can be classified into amylose and amylopectin according to their molecular structures, and their solubility, viscosity and digestibility are different from each other, and the proportion of the starch in different cereals is different from each other, so that the processing characteristics and the edible flavor of the starch are directly influenced.

The cereal contains a large amount of B vitamins, wherein the contents of vitamin B1, vitamin B2 and nicotinic acid are high. The cereal germs contain a large amount of vitamin E, and most of the vitamin is concentrated in germs, aleurone layer and cereal skin. Therefore, the content of vitamins in the polished rice and flour is very low.

The content of inorganic salts in cereals is about 1.5%, and the contents are mainly phosphorus and calcium. In addition, it contains a large amount of magnesium. The inorganic salts of cereals are also mostly concentrated in the husk and aleurone layer, and the raw rice and flour contain additional inorganic salts due to the retention of part of the anecdotal husk. The most of calcium and phosphorus contained in cereals exist in the form of phytate, which is not easy to be absorbed by body. Related researches show that the cereals contain phytase, which can decompose phytate to release free calcium and phosphorus, and increase the utilization rate of calcium and phosphorus.

Chinese invention patent CN 106720911A discloses a pure natural ice cream and a preparation method thereof, Chinese invention patent CN 105379940A discloses a method for preparing an ice cream by using pre-boiled liquid processed by mung beans, Chinese invention patent CN 107156422A discloses a fermented bean dreg ice cream and a preparation method thereof, Chinese invention patent CN 107094983A discloses a preparation method of an ice cream containing coarse grain small round grains, and Chinese invention patent CN 107156422A discloses a biological cellulose crackling ice cream and a preparation method thereof, wherein different cereal raw materials are directly added into the ice cream, and the added raw materials are not modified.

The invention adopts the steam heat treatment technology to treat the cereal raw materials, can well reduce the content of insoluble dietary fibers and improve the palatability and the continuous feeding property of the cereal products. The cereal ice cream bar processed by steam heat treatment is prepared by adding the cereals into the ice cream bar, so that the dietary fiber and other nutrients required by a human body can be well supplemented, the flavor is improved, the nutrition is balanced, and the application of the cereals in food processing is widened.

Disclosure of Invention

The invention aims to provide a method for making ice cream bars by steam heat treatment of cereals, which is used for solving the problems of low utilization rate of the existing cereals, high fat, high calorie, high cholesterol, single flavor, high making cost and the like of the ice cream bars. On the basis of not changing the taste of the ice cream, the invention replaces or partially replaces the skimmed milk powder or the whole milk powder of the traditional ice cream with the novel steam heat treatment grains, increases the content of dietary fiber and other nutrients in the ice cream, reduces the content of cholesterol and fat, is beneficial to accelerating the intestinal tract movement, meets the requirement of modern people on pursuing healthy diet, and widens the application of the grains in the food processing process.

The technical scheme adopted by the invention is that the ice cream prepared by the grain through steam heat treatment is composed of 30% ~ 80% of primary cereal colloid pulp, 0% ~ 20% of whole milk powder, 0.1% ~ 0.5.5% of xanthan gum, 0.25% ~ 0.75.75% of CMC-Na0.25%, 10% ~ 20% of white granulated sugar, 2% ~ 10% of fresh egg pulp, 10% ~ 20% of anhydrous water and no more than 1.5% of other grain essence by mass ratio.

The method for making ice cream bars by steam heat treatment of cereals in the scheme comprises the following steps:

(1) the preparation method of steam heat-treated cereals comprises soaking cereals with uniform size and no deterioration in distilled water for 0.5 ~ 3h, placing into a steam tank, introducing saturated steam under pressure of 0.2 ~ 1.2.2 MPa for 0.1 ~ 10 min, and rapidly relieving pressure.

(2) Collecting the sample after steam heat treatment, grinding with colloid mill to obtain cereal colloid primary pulp, adding water 30% ~ 50%, controlling water temperature at 20 deg.C ~ 50 deg.C%, grinding for 30min ~ 60min, and collecting cereal colloid primary pulp.

(3) Taking 30% ~ 80% cereal colloid raw pulp, adding 0.1% ~ 0.5.5% xanthan gum, 0.25% ~ 0.75.75% CMC-Na, 10% ~ 20% white sugar under stirring, and heating and stirring until completely dissolved.

(4) Adding ~ 20% whole milk powder and 2% ~ 10% fresh egg slurry into a container, heating to 50 deg.C ~ 60 deg.C under stirring, filtering, adding xanthan gum cereal raw juice after stirring, and stirring to obtain uniform mixture.

(5) Heating to 80 deg.C ~ 100 deg.C, maintaining for 15min ~ 30min, and sterilizing.

(6) Cooling the sterilized mixture to 50 deg.C ~ 70 deg.C, and homogenizing under 20MPa ~ 40 MPa.

(7) Immediately placing the homogenized mixture in a cold storage chamber, rapidly cooling to 2 deg.C ~ 7 deg.C and maintaining for 2h ~ 5h to age the mixture and increase viscosity.

(8) Adding grain essence not more than 1.5% into the aged mixture, and quickly freezing with expansion rate of 30% ~ 60%.

(9) Hardening: and (4) quickly freezing the treated mixed solution at a low temperature of-18 ℃.

The invention has the following characteristics and advantages:

the cereals are rich in dietary fibers and have extremely high functional value, and the cereal ice cream is added into ice cream to be prepared into steam heat treatment cereal ice cream, so that the cereal ice cream can well meet the nutritional value requirements of modern people, after the cereals are subjected to steam heat treatment, the functional component content of the cereals is changed, namely, the content of insoluble dietary fibers is reduced by 15.96 percent ~ 54.63.63 percent, and the content of soluble dietary fibers is increased by 12.13 percent ~ 15.61.61 percent, wherein the dietary fibers in the cereals can increase intestinal tract movement and generate satiety, meanwhile, the dietary fibers are closely related to human health, and the incidence rate of cardiovascular and cerebrovascular diseases and diabetes can be effectively reduced by eating the dietary fibers, so that the human immunity is improved.

Detailed Description

The invention is further illustrated by the following examples.