阅读说明：本技术 一种红枣山药乳饮料的制作方法 (Preparation method of red date and Chinese yam milk beverage ) 是由 李天齐 马灵 孙冬雪 王春燕 刘佳美 于 2018-07-09 设计创作，主要内容包括：本发明公开了一种红枣山药乳饮料的制作方法,本发明以红枣、山药和牛乳为主要原料,添加白砂糖、柠檬酸及增稠剂等组分,以感官评定为指标,研制出红枣山药保健乳饮料。采用本发明的方法可以直接制得红枣山药乳饮料产品为淡奶茶色,质地为稍黏稠的液状,有山药特有的柔滑感,状态均匀,味道清新香甜,酸甜可口,有红枣、山药与牛奶特有的混合风味,颜色均匀一致、无悬浮的杂质。红枣山药乳饮料不仅营养滋补,且具有补气血、降血压、滋养肾气,健脾护胃、增强体质、延缓衰老等功能。(The invention discloses a preparation method of a red date and Chinese yam health milk beverage, which takes red dates, Chinese yams and milk as main raw materials, adds components such as white granulated sugar, citric acid, a thickening agent and the like, and develops the red date and Chinese yam health milk beverage by taking sensory evaluation as an index. The red date and Chinese yam milk beverage directly prepared by the method has light milk tea color, slightly sticky liquid texture, unique soft and smooth feeling of Chinese yam, uniform state, fresh and sweet taste, sour, sweet and delicious taste, unique mixed flavor of red date, Chinese yam and milk, uniform and consistent color and no suspended impurities. The red date and Chinese yam milk beverage is nutritious and tonic, and has the functions of invigorating qi and blood, lowering blood pressure, nourishing kidney qi, strengthening spleen and protecting stomach, strengthening physique, delaying senility and the like.)

1. A preparation method of a red date and Chinese yam milk beverage is characterized by comprising the following steps:

(1) preparing red date juice: firstly, selecting fresh and undamaged fresh red dates, and cleaning the fresh red dates with clear water. Placing fructus Jujubae in boiling water, boiling for 20min, taking out, and weighing. Placing the extracted red dates into purified water with specified mass for juicing, filtering the juiced red date pulp by absorbent cotton gauze, and filtering to remove crushed date pits, date peels and the like to obtain the red date juice.

(2) Preparing the yam juice: firstly, selecting a plurality of fresh Chinese yams which are neat, have no collision damage and are not damaged by worms, continuously cleaning the fresh Chinese yams by flowing water, peeling the Chinese yams by using a cutter, weighing the Chinese yams, cutting the Chinese yams into slices with the thickness of 2-3 mm, immediately placing the Chinese yams into a citric acid color fixative for soaking for 30min for color protection, taking out the Chinese yam slices after color protection, cleaning residual color fixative by using clean water, placing the Chinese yam slices into a juicer to be juiced with purified water with certain quality to prepare Chinese yam pulp, and filtering the Chinese yam pulp by using four layers of gauze to obtain the Chinese yam juice.

(3) Mixing and blending: mixing the red date juice in the step (1), the Chinese yam juice in the step (2) and milk according to a certain proportion, adding 2-10% (w/w) of white granulated sugar, 0.02-0.10% (w/w) of citric acid and 0.15% (w/w) of stabilizer which is xanthan gum and CMC according to the total mass of the mixed liquid, and fully stirring to prepare a mixture of ingredients;

(4) homogenizing: and (3) homogenizing the mixture of ingredients obtained in the step (3) for 2 times under the conditions of a homogenizing pressure of 20-30MPa and a temperature of 60-70 ℃.

(5) And (3) bus sterilization: and (3) performing bus sterilization on the homogenized mixture of the ingredients at the sterilization temperature of 65 ℃ for 30 min.

(6) And (3) sterile filling: and cooling and aseptically filling the sterilized ingredient mixed liquor to obtain the red date and Chinese yam milk beverage.

2. The manufacturing method of the red date and Chinese yam milk beverage according to claim 1, characterized in that: the mixing ratio of the red date juice in the step (1) and the Chinese yam juice and the milk in the step (2) in the step (3) is 2:1: 2.

3. The manufacturing method of the red date and Chinese yam milk beverage according to claim 1, characterized in that: in the step (3), the addition amount of the citric acid is 0.06% (w/w).

4. The manufacturing method of the red date and Chinese yam milk beverage according to claim 1, characterized in that: in the step (3), the addition amount of the white granulated sugar is 4% (w/w).

5. The manufacturing method of the red date and Chinese yam milk beverage according to claim 1, characterized in that: the thickening agent in the step (3) is xanthan gum and CMC, and the ratio of the xanthan gum to the CMC is 1: 2.

Technical Field

The invention belongs to the technical field of health-care beverages, and relates to a preparation method of a red date and Chinese yam milk beverage.

Background

The fructus Jujubae is rich in various nutrients, contains abundant vitamins including VA and VB₁、VB₂VC and VP, the content of vitamin in red jujube is high, the action effect can be compared with that of professional vitamin medicament, and also contains a large amount of iron, the iron element is essential element for synthesizing hemoglobin, and the red jujube can tonify qi and generate blood when eaten. The edible red dates can soothe the nerves, nourish the face, enhance the physique, delay senility and promote blood circulation; has effects in nourishing qi, tonifying blood, regulating dysphoria, restlessness, insomnia and dreaminess, and lowering blood pressure; meanwhile, the red dates can relieve the damage of toxic substances to the liver and insist onWhen the health-care food is eaten, serum protein in a human body can be obviously increased, and the health-care food can play a good role in protecting the liver and expelling toxin.

The yam has rich nutrient substances and has the functions of strengthening physique and nourishing kidney. The saponin and mucus in rhizoma Dioscoreae have lubricating and nourishing effects. Therefore, the traditional Chinese medicine has the effects of nourishing lung qi and treating chronic cough accompanied with lung deficiency; VB contained in yam₁The substances such as polyphenol oxidase can improve the yang excess of the spleen and the stomach and the yin deficiency, plays a good role in the digestion and absorption of the spleen and the stomach, and in addition, vitamins and trace elements contained in the Chinese yam can prevent modern high-rise cardiovascular diseases and prevent the renal function sclerosis, thereby realizing the effects of health care and anti-aging.

Cow milk is a beverage which is rich in nutrition and contains at least 100 complex chemical components, and the main components of cow milk are water, protein, fat, lactose, inorganic salt and the like. The protein in the milk is full protein, contains all essential amino acids required by human body, and the digestibility is as high as 98%. The highest content of inorganic salt calcium is one of the best calcium sources for human beings and is also an important component of bones and teeth. Besides the main components, the milk also contains other trace substances such as phospholipid, vitamins, enzymes, pigments and the like. The milk is rich in nutrition, and has different effects in caring skin, reducing weight, inhibiting tumor, tranquilizing mind, and preventing hypertension.

The red date and Chinese yam milk beverage is developed by taking red dates, Chinese yam and cow milk as main raw materials and sensory evaluation as indexes. The red date and Chinese yam milk beverage directly prepared by the method has light milk tea color, slightly sticky liquid texture, unique soft and smooth feeling of Chinese yam, uniform state, fresh and sweet taste, sour, sweet and delicious taste, unique mixed flavor of red date, Chinese yam and milk, uniform and consistent color and no suspended impurities. Meanwhile, the problem that the domestic market is lack of nutritional functional beverages is solved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a preparation method of a red date and Chinese yam milk beverage with nutrition and health care effects, which can be used for food industry.

The purpose of the invention is realized by the following technical scheme:

a preparation method of a red date and Chinese yam milk beverage comprises the following steps:

(1) preparing red date juice: firstly, selecting fresh and undamaged fresh red dates, and cleaning the fresh red dates with clear water. Placing fructus Jujubae in boiling water, boiling for 20min, taking out, and weighing. Placing the extracted red dates into purified water with specified mass for juicing, filtering the juiced red date pulp by absorbent cotton gauze, and filtering to remove crushed date pits, date peels and the like to obtain red date juice;

(2) preparing the yam juice: firstly, selecting a plurality of fresh Chinese yams which are neat, have no collision damage and are not damaged by worms, continuously cleaning the Chinese yams by flowing water, peeling the Chinese yams by using a cutter, weighing the Chinese yams, cutting the Chinese yams into slices with the thickness of 2-3 mm, immediately placing the Chinese yams into a citric acid color fixative for soaking for 30min for color protection, taking out the Chinese yam slices after color protection, cleaning residual color fixative by using clean water, placing the Chinese yam slices into a juicer to be juiced with purified water with certain quality to prepare Chinese yam pulp, and filtering the Chinese yam pulp by using four layers of gauze to obtain Chinese yam juice;

(3) mixing and blending: mixing the red date juice in the step (1), the Chinese yam juice in the step (2) and milk according to a certain proportion, adding 2-10% (w/w) of white granulated sugar, 0.02-0.10% (w/w) of citric acid and 0.15% (w/w) of stabilizer which is xanthan gum and CMC according to the total mass of the mixed liquid, and fully stirring to prepare a mixture of ingredients;

(4) homogenizing: homogenizing the mixture obtained in step (3) at a homogenizing pressure of 20-30MPa and a temperature of 60-70 deg.C for 2 times;

(5) and (3) bus sterilization: performing bus sterilization on the homogenized mixture of the ingredients at 65 deg.C for 30 min;

(6) and (3) sterile filling: and cooling and aseptically filling the sterilized ingredient mixed liquor to obtain the red date and Chinese yam milk beverage.

In the present invention, preferably, in the step (3), the mixing ratio of the red date juice in the step (1), the Chinese yam juice in the step (2) and the milk is 2:1: 2.

in the present invention, it is preferable that the citric acid is added in an amount of 0.06% (w/w) in the step (3).

In the invention, preferably, the addition amount of the white granulated sugar in the step (3) is 4% (w/w).

In the present invention, it is preferable that the stabilizer used in the step (3) is xanthan gum and CMC, and the ratio of the xanthan gum to the CMC is 1: 2.

The invention has the beneficial effects that:

1) the red date and Chinese yam milk beverage can be directly prepared by the preparation method, is light milk tea color, is slightly sticky liquid in texture, has the unique soft and smooth feeling of Chinese yam, is uniform in state, fresh and sweet in taste, sour, sweet and delicious, has the unique mixed flavor of red date, Chinese yam and milk, is uniform and consistent in color and has no suspended impurities.

2) The red date and Chinese yam milk beverage prepared by the preparation method disclosed by the invention is not only nutritious and nourishing, but also has the functions of tonifying qi and blood, reducing blood pressure, nourishing kidney qi, strengthening and protecting spleen and stomach, strengthening physique, delaying aging and the like.

Detailed Description