CN101940349B - A kind of corn silk mineral water and preparation method thereof - Google Patents

Abstract

The invention discloses corn stigma mineral water. The corn stigma mineral water is prepared from corn stigma and mineral water serving as raw materials, wherein the weight-to-volume ratio of the corn stigma to the mineral water is 0.1 to 1kg to 100L; the polysaccharide content of the corn stigma mineral water is 0.01 to 0.5g/L; the total saponin content is 0.01 to 0.1g/L; and the total flavone content is 0.01 to 0.1g/L. The invention also discloses a preparation method of the corn stigma mineral water; and the method comprises the following steps of: placing the corn stigma into a sealed container; adding preheated mineral water into the container; performing thermal extraction and solid-liquid separation; performing secondary filtration on the liquid part, sterilizing the liquid part at a high temperature and cooling the liquid part to 90 DEG C for thermal encapsulation; and pouring the liquid part into bottles, cooling the liquid part by spraying, performing visual inspection and packaging the bottles to obtain the corn stigma mineral water. The corn stigma mineral water does not have any preservative and has the health-care functions of antioxidation, diuresis, pressure lowering, blood sugar level regulation, enhancement of immunity of a body and the like, so that the corn stigma mineral water can replenish moisture required by human body every day in place of drinking water and can be used as a functional beverage for diabetic patients to play a part in prevention and health care.

Description

A kind of corn silk mineral water and preparation method thereof

technical field

The invention relates to corn silk mineral water and a preparation method thereof, belonging to the field of health beverage processing.

Background technique

Corn silk (stigma maydis) is the style and stigma of maize, a plant of the genus Maize in the grass family. In my country, corn silk has a long history of clinical use as a traditional Chinese medicine. Studies have shown that corn silk contains a variety of biologically active components, such as flavonoids and their glycosides, sterols, alkaloids, sugars, organic acids, volatile oils, trace amounts Elements and multivitamins, etc., its extracts have anti-oxidation, diuretic, hypoglycemic, antibacterial, antihypertensive and immune-enhancing effects. The US Food and Drug Administration has confirmed that corn silk is a safe, non-toxic substance.

At present, the application of corn silk is mainly used as a raw material and other traditional Chinese medicinal materials for formulating prescriptions. Treatment of diseases such as diabetes and high blood pressure. Corn silk extract is mainly obtained by ethanol reflux extraction, water decoction extraction or ultrasonic extraction, followed by concentration, refining and drying. The preparation method is complicated, the ingredients in the corn extract are single, the volatile substances are seriously lost, and the natural corn flavor is lost.

In recent years, with the continuous improvement of people's living standards and changes in dietary structure, the incidence of diabetes mellitus (DM) has increased year by year, seriously affecting people's quality of life. Especially type 2 diabetes mellitus (T2DM), which generally occurs in adults (35-45 years old), and its incidence rate continues to increase with age, accounting for more than 90% of the total incidence of diabetes. One of the most common and harmful endocrine diseases in the world. The condition of type 2 diabetes is generally mild and hidden, and its treatment methods are mainly exercise and diet control. Therefore, a healthy diet is extremely important to prevent the occurrence of diabetes. Professor Liu Jicheng's research group used the rat model of type 2 diabetes to study the physiological functions of the water extract of corn silk and found that: 1) the water extract of corn silk can significantly reduce the expression of fasting blood sugar and glucagon in islet cells (Wen Xianchun , Zhou Li, Zhao Jianfei, Liu Jicheng, Effect of corn silk water extract on glucagon in type 2 diabetic rats, Journal of Medical Research 2010, 39(4):52-54); 2) corn silk water extract on Damaged islet β-cells have certain repairing and protective effects (Wen Xianchun, Li Xueyan, Li Xiaoming, Li Chengchong, Liu Jicheng, Protective effect of corn silk water extract on islet β-cells of type 2 diabetic rats, Chinese Journal of Traditional Chinese Medicine Information 2010 , 17(2):37-39); 3) Corn silk water extract can improve glucose-lipid metabolism and inhibit oxidative stress in type 2 diabetic rats (Wen Xianchun, Zhou Li, Li Xiaoming, Li Chengchong, Liu Jicheng, Corn silk Effects of water extract on glucose-lipid metabolism and oxidative stress in type 2 diabetic rats, Chinese Journal of Traditional Chinese Medicine Information 2010, 17(5)).

Because the corn silk water extract has a good health care effect, people begin to develop health drinks with corn silk as the main raw material. CN101396161A discloses "a kind of xylitol corn silk vinegar beverage and its preparation method", but these patent applications are also equipped with other ingredients except corn silk in ingredients, and most of them also add preservatives, and these ingredients cover up The unique fragrance taste of corn silk is obtained; at the same time, the preparation method of corn silk water extract all adopts the method of boiling, so that the main aroma substance of corn silk is seriously lost, and the taste of the product is affected.

D-tagatose has very important health functions. The current research results show that 1) D-tagatose is a good low-calorie, bulking sweetener. The sweetness of D-tagatose is 92% of that of sucrose, and the heat generated is only 1/3 of that of sucrose, and the taste is very similar to that of sucrose; Only 20% of it is absorbed by the small intestine, which will not cause significant changes in the blood sugar level of the body, and is very suitable for diabetics; 3) D-tagatose is a prebiotic. Most of the unabsorbed D-tagatose is fermented and utilized by some microbial flora in the colon to produce short fatty acid chains and promote the proliferation of beneficial bacteria; 4) it is not easy to be decomposed and utilized by oral bacteria; therefore D-tagatose has low energy , lowering blood sugar, preventing obesity, improving intestinal flora and anti-caries and other physiological functions. In addition to being used as a sweetener, D-tagatose can also be used as a flavor enhancer for food. At present, it is widely used in products such as health drinks, yogurt, fruit juice, baked goods, candies and pharmaceutical preparations (such as syrups, chewable tablets), as a substitute for sucrose.

Contents of the invention

The first technical problem to be solved by the present invention is a corn silk mineral water, which only uses corn silk and mineral water as raw materials without adding any other ingredients. The corn silk mineral water has health functions such as anti-oxidation, diuresis, lowering blood pressure, lowering blood sugar and enhancing the body's immunity. The efficacy of preventive health care.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

The invention provides a corn silk mineral water, which is made of corn silk and mineral water as raw materials, and the weight-to-volume ratio of the corn silk to the mineral water is 0.1 to 1Kg: 100L;

Wherein, the polysaccharide content in the corn silk mineral water is 0.01-0.5 g/L, the total saponin content is 0.01-0.1 g/L, and the total flavonoid content is 0.01-0.1 g/L.

The present invention also provides the preparation method of above-mentioned corn silk mineral water, and this preparation method comprises the steps:

(1) according to the weight volume ratio of corn silk and mineral water is 0.1～1Kg: 100L, take corn silk and mineral water, then put corn silk into airtight container;

(2) Preheating the mineral water, and then using the preheated mineral water to perform thermal extraction on corn silk under the condition of 85-95° C., and then performing solid-liquid separation to obtain filtrate A;

(3) The filtrate A obtained by the extraction is subjected to secondary filtration to obtain the water extract of corn silk;

(4) Detecting the water extract of corn silk, wherein the content of polysaccharides is 0.01～0.5g/L, the content of total saponins is 0.01～0.1g/L, and the content of total flavonoids is 0.01～0.1g/L;

(5) Instantaneous sterilization at high temperature, cooling to 90°C for hot filling, bottle inversion, spray cooling, light inspection, packaging, and corn silk mineral water.

In the step (2), in order to achieve a better extraction effect, it is preferable to divide the preheated mineral water into 2 to 3 parts to carry out heat extraction on the corn silk respectively, and each heat extraction time is 30min, Combine the filtrates obtained each time to obtain filtrate A. The temperature of the thermal extraction is preferably 90°C.

The second technical problem to be solved by the present invention is a kind of corn silk mineral water. In addition to using corn silk and mineral water as raw materials, the corn silk mineral water also adds an appropriate amount of D-tagatose, so that the corn silk mineral water In addition to the natural corn flavor of the fragrance, the water tastes slightly sweet.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

The invention provides a kind of corn silk mineral water, and it is made by corn silk, D-tagatose and mineral water as raw material, and the weight volume ratio of described each raw material is: corn silk: D-tagatose: mineral spring Water = 0.1～1Kg: 0.01～2Kg: 100L;

Wherein, the polysaccharide content in the corn silk mineral water is 0.01-0.5 g/L, the total saponin content is 0.01-0.1 g/L, and the total flavonoid content is 0.01-0.1 g/L.

The present invention also provides a kind of preparation method of above-mentioned corn silk mineral water, and this preparation method comprises the following steps:

(1) According to the ratio of corn silk: D-tagatose: mineral water = 0.1 ~ 1Kg: 0.01 ~ 2Kg: 100L, weigh corn silk, D-tagatose and mineral water, and then put the corn silk into an airtight container middle;

(2) Preheating the mineral water, and then using the preheated mineral water to perform thermal extraction on corn silk under the condition of 85-95° C., and then performing solid-liquid separation to obtain filtrate A;

(3) The filtrate A obtained by the extraction is subjected to secondary filtration to obtain the water extract of corn silk;

(4) Add D-tagatose to the water extract of corn silk, and then detect the water extract of corn silk, wherein the content of polysaccharide is 0.01～0.5g/L, and the content of total saponin is 0.01～0.1g /L, the content of total flavonoids is 0.01～0.1g/L;

(5) Instantaneous sterilization at high temperature, cooling to 90°C for hot filling, bottle inversion, spray cooling, light inspection, packaging, and corn silk mineral water.

In the step (2), in order to achieve a better extraction effect, it is preferable to divide the preheated mineral water into 2 to 3 parts to carry out heat extraction on the corn silk respectively, and each heat extraction time is 30min, Combine the filtrates obtained each time to obtain filtrate A. The temperature of the thermal extraction is preferably 90°C.

The corn silk used in the above two methods is fresh or dry corn silk, and the harvest time is from August to October every year.

Features of the present invention and the beneficial effects that produce are:

(1) Corn silk mineral water maintains the natural and popular corn flavor, which is fragrant and delicious. In addition, corn silk mineral water contains a proper proportion of corn silk polysaccharides, flavonoids and saponins, which have the functions of regulating immune function, anti-tumor, protecting liver, lowering blood sugar, diuresis, antipyretic, choleretic and blood lipid lowering. At the same time, corn silk mineral water has no toxic and side effects, can be used as a daily drink, is suitable for long-term drinking, and has the function of maintaining and repairing the health of the body. It is not only suitable for drinking by healthy people, but also suitable for drinking by people with diabetes and high blood pressure.

(2) The corn silk of the present invention is fresh or dried corn silk harvested from August to October each year, and has the highest and stable content of chlorogenic acid and total flavonoids. In addition, the corn silk used in the present invention is not cut or ground, and the filtrate after mineral water extraction is clarified, which reduces the pressure of subsequent filtering equipment and is easy for industrial production.

(3) prepare corn silk mineral water with the weight-volume ratio scope of corn silk and mineral water of the present invention, can extract the water-soluble matter in corn silk to the greatest extent, especially the immersion of the characteristic local flavor substance in corn silk The extraction effect is very obvious, and in the preparation process, heat extraction is carried out in an airtight container, so that the corn silk mineral water prepared by the method of the present invention has more natural corn fragrance, and because no or only an appropriate amount of D-tagatose, without adding preservative ingredients, makes the aroma of corn particularly pure and refreshing.

(4) The inventor investigated the temperature of hot extraction of corn silk, extracted under the condition of 85～95°C, the content of polysaccharide and total saponin in the aqueous extract of corn silk was the highest, and extracted under the condition of 100°C, The content of total flavonoids is the highest. However, considering the content of active ingredients in corn silk and the heat consumption and cost in industrial production, the extraction temperature in the production of corn silk water is finally determined to be 85-95 °C.

(5) The preparation method of the present invention is simple, easy to implement and low in cost, and is suitable for industrial production.

(6) Corn is one of the main crops in our country. Corn resources are extremely rich, but the development and utilization of corn silk is limited, a large amount of corn silk is discarded, and resources are seriously wasted. The successful development of the corn silk mineral water of the present invention has opened up a new way for the application of corn silk, and turning waste into treasure will certainly create huge economic and social benefits.

Description of drawings

Below in conjunction with accompanying drawing, specific embodiment of the present invention is described in further detail

Fig. 1 The effect of extraction temperature on the content of polysaccharides, total flavonoids and total saponins in corn silk water.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Embodiment 1 The preparation of corn silk mineral water

(1) Take 5 kg of dry corn silk, remove impurities, wash, and put into a closed extraction tank;

(2) Preheat 1000L mineral water, divide the preheated mineral water into 3 parts, and carry out 3 times of heat extraction on the corn silk under the condition of 90 ℃, each time of heat extraction is 30min, each time of heat extraction Carry out solid-liquid separation after the extraction, and the filtrate is combined;

(3) The liquid part obtained by extraction is subjected to secondary filtration to obtain corn silk water extract;

(4) The corn silk extract was detected, and the contents of corn silk polysaccharides, total flavonoids and total saponins were 62.7mg/L, 29.2mg/L and 73.2mg/L, respectively.

(5) After being sterilized at 137°C for 4sec, it is cooled to 90°C for hot filling, bottle inversion, spray cooling, light inspection, and packaging. It is corn silk mineral water with a delicate natural corn flavor.

The preparation of embodiment 2 corn silk mineral water

(1)-(3), (5) are with embodiment 1 step (1)-(3), (5);

(4) Add 1Kg of D-tagatose to the corn silk water extract, and then detect the corn silk water extract, wherein the contents of corn silk polysaccharides, total flavonoids and total saponins are respectively 62.7mg/L, 29.2 mg/L and 73.2mg/L.

The corn silk mineral water prepared by the method has a slightly sweet mouthfeel in addition to the natural corn flavor with delicate fragrance.

Example 3 Determination of polysaccharides, total flavonoids and total saponins in corn silk mineral water

1 Experimental materials

1.1 Raw material

The fresh and dried styles and stigmas of corn silk collected in the suburbs of Qiqihar City, Heilongjiang Province during August-October 2009.

1.2 Reagents

Ginsenoside Re was purchased from China Institute for the Control of Pharmaceutical and Biological Products (110754-200822); rutin was purchased from Beijing Chemical Reagent Company; β-glucan was a product of Sigma. Vanillin, concentrated sulfuric acid, phenol, ethanol, sodium nitrite, aluminum nitrate, and sodium hydroxide are commercially available analytical reagents.

1.3 Instruments

FA1604N Electronic Analytical Balance Shanghai Precision Scientific Instrument Co., Ltd.

SSW-600-2S electric heating constant temperature water tank Shanghai Boxun Industrial Co., Ltd.

722 Visible Spectrophotometer Shanghai Precision Scientific Instrument Co., Ltd.

Z36HK Large-capacity high-speed refrigerated centrifuge

2 Experimental methods

2.1 The preparation of corn silk water was obtained according to the method in Example 1.

2.2 Determination method:

The sulfuric acid-phenol method was used for polysaccharides; the aluminum nitrate colorimetric method was used for total saponins; the vanillin-sulfuric acid colorimetric method was used for total flavonoids.

2.3 Drawing of standard curve

Accurately weigh an appropriate amount of ginsenoside Re reference substance, dissolve it with methanol to prepare a 0.1812 mg/L reference substance mother solution, and precisely measure ginsenoside Re reference substance mother solution to prepare solutions with a series of concentrations. Accurately measure 2mL of the above series of solutions, place them in a 25mL stoppered colorimetric tube, precisely add 0.5mL of 8% vanillin ethanol solution, 5mL of 77% sulfuric acid, shake well, put them in a water bath at 60°C for 10 minutes, take them out and put them in an ice water bath Cool in medium for 10 minutes, and measure the absorbance at a wavelength of 534nm with the reagent blank solution as a reference. Draw a standard curve with the absorbance as the ordinate (Y) and the concentration of ginsenoside Re as the abscissa (X).

Accurately weigh an appropriate amount of rutin reference substance, dissolve it with 70% ethanol to prepare a 0.109 mg/mL reference substance mother solution, and precisely measure the rutin reference substance mother solution to prepare solutions with a series of concentrations. Accurately measure 2 mL of the above series of solutions respectively, put them in a 25 mL stoppered colorimetric tube, add 0.3 mL of 5% NaNO ₂ solution, shake well, let stand for 6 minutes, add 0.3 mL of 10% Al(NO ₃ ) ₃ solution, shake well, Let stand for 6 minutes, add 4% NaOH 4mL, add distilled water to dilute to 10mL, shake well, let stand for 10min, use reagent blank as reference, measure absorbance at 506nm. Draw a standard curve with the absorbance as the ordinate (Y) and the concentration of rutin as the abscissa (X).

Accurately weigh an appropriate amount of β-glucan reference substance, dissolve it in distilled water, and prepare a 106 mg/L reference substance mother solution. Accurately measure 0.1mL, 0.4mL, 0.6mL, 0.8mL, 1.0mL, 1.2mL and 1.4mL of β-glucan reference substance mother solution respectively, put them in a 25mL stoppered colorimetric tube, add distilled water to 2.0mL, add 1.0mL of 6% phenol solution, shake well, carefully add 5.0mL of concentrated sulfuric acid, shake well, put in a boiling water bath and boil for 15min, after rapid cooling, measure the absorbance at 490nm with the reagent blank solution as a reference, take the absorbance as the ordinate (Y), draw a standard curve with the concentration of β-glucan as the abscissa (X).

2.3 Experimental results

The results show that the standard product ginsenoside Re has a good linear relationship in the concentration range of 18.1-108.7 mg/L, and the regression equation is Y=6.5948X-0.0049, r=0.9985; rutin has a linear relationship in the concentration range of 10.9-65.4 μg/mL Good, the regression equation is Y=0.0023X-0.0011, r=0.9998; β-glucan has a good linear relationship within the concentration range of 10.6-74.2mg/L, the regression equation is Y=9.7686X-0.0191, r=0.9969;

Precisely measure the corn silk mineral water prepared in Example 1, adopt the relevant methods and conditions for drawing a standard curve, and measure the contents of polysaccharides, total flavonoids and total saponins in the corn silk water respectively, that is, the polysaccharides are 62.7 mg/L, and the total flavones are 29.2 mg/L. mg/L, the total saponin is 73.2mg/L.

Example 4 Effect of heat extraction temperature on polysaccharide, total flavonoids and total saponins content in corn silk mineral water

1 Experimental materials

With embodiment 3.

2 Experimental methods

According to the method of Example 1, heat extraction was carried out under the conditions of 80°C, 85°C, 90°C, 95°C and 100°C respectively, to obtain corn silk extracts under different temperature conditions, and to investigate the effect of extraction temperature on corn silk Effect of polysaccharides, total flavonoids and total saponins in water.

3 Experimental results

The content of polysaccharides, total flavonoids and total saponins in corn silk water prepared at 80°C, 85°C, 90°C, 95°C and 100°C respectively. As shown in Figure 1, the content of polysaccharides and total saponins in the corn silk extract is the highest when extracted at 85-95 °C, and the highest content of total flavonoids is extracted at 100 °C. Therefore, considering the content of active ingredients in corn silk and the heat consumption and cost in industrial production, the extraction temperature in the production of corn silk mineral water is finally determined to be 85-95 °C. The specific structure is shown in Figure 1.

Example 5 Effects of Different Corn Silk Consumption on Sensory Effects of Corn Silk Water

1 Experimental materials

With embodiment 3.

2 Experimental methods

According to the method of Example 1, the material consumption of corn silk is respectively 0.1% (w/v), 0.5% (w/v) and 1% (w/v), and it is prepared under the condition of 90 ℃ of extraction temperature Corn silk water, for sensory index evaluation.

10 evaluators use anonymous scoring methods to score 10 indicators such as color, appearance, smell, flavor, sweetness, oral delay sensation, and physiological delay sensation. The full score is 10 points, and the higher the score, the better the better the effect,

3 Experimental results

According to the following statistical results, it can be seen that the sensory evaluation score of corn silk mineral water is higher when the amount of corn silk is between 0.1% and 1%, and the sensory evaluation score of corn silk mineral water is the best, which is 545. point. The main difference lies in the color and taste. Corn silk mineral water with 0.5% corn silk is clear and transparent, slightly yellow, and has a natural fragrance of corn. And the corn silk mineral water that the corn silk consumption is 0.01% and 0.05% is too light, on the contrary the corn silk mineral water that the corn silk consumption is more than 1% is too dense again. Based on the comprehensive scores of the following indicators, the sensory indicators of corn silk mineral water with a concentration of 0.5% are the best.

The results are shown in Table 1:

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. All the implementation manners cannot be exhaustively listed here. All obvious changes or changes derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims (8)

1. a corn stigma mineral water is characterized in that, it is to be processed as raw material by corn stigma and mineral water, and the w/v of said corn stigma and mineral water is 0.1～1Kg: 100L;

Wherein, the content of polysaccharide is 0.01～0.5g/L in the said corn stigma mineral water, and the content of total saponin(e is 0.01～0.1g/L, and content of total flavone is 0.01～0.1g/L;

Concrete preparation method comprises the steps:

(1) takes by weighing corn stigma and mineral water according to aforementioned proportion, then corn stigma is put into closed container;

(2) with the mineral water preheating, under 85～95 ℃ condition, use the mineral water of preheating that corn stigma is carried out hot extracting then, carry out Separation of Solid and Liquid again, obtain the A that filtrates;

(3) the filtrating A process cascade filtration that extracting is obtained obtains the corn stigma water extract;

(4) the corn stigma water extract is detected, wherein the content of polysaccharide is 0.01～0.5g/L, and the content of total saponin(e is 0.01～0.1g/L, and content of total flavone is 0.01～0.1g/L;

(5) high-temperature short-time sterilization is cooled to 90 ℃ and carries out hot filling, bottle, spray cooling, and the lamp inspection is packed, and is the corn stigma mineral water.

2. the preparation method of corn stigma mineral water as claimed in claim 1 is characterized in that, this preparation method comprises the steps:

(1) takes by weighing corn stigma and mineral water according to aforementioned proportion, then corn stigma is put into closed container;

(2) with the mineral water preheating, under 85～95 ℃ condition, use the mineral water of preheating that corn stigma is carried out hot extracting then, carry out Separation of Solid and Liquid again, obtain the A that filtrates;

(3) the filtrating A process cascade filtration that extracting is obtained obtains the corn stigma water extract;

(4) the corn stigma water extract is detected, wherein the content of polysaccharide is 0.01～0.5g/L, and the content of total saponin(e is 0.01～0.1g/L, and content of total flavone is 0.01～0.1g/L;

(5) high-temperature short-time sterilization is cooled to 90 ℃ and carries out hot filling, bottle, spray cooling, and the lamp inspection is packed, and is the corn stigma mineral water.

3. preparation method according to claim 2 is characterized in that, in said step (2); The mineral water of said preheating is divided into 2～3 parts respectively corn stigma is carried out hot extracting; Each hot extracting time is 30min, merges each filtrating that obtains, and promptly gets the A that filtrates.

4. according to claim 2 or 3 described preparation methods, it is characterized in that, in the said step (2), under 90 ℃ condition, use the mineral water of preheating that corn stigma is carried out hot extracting.

5. a corn stigma mineral water is characterized in that, it is to be processed as raw material by corn stigma, D-Tagatose and mineral water, and the w/v of said each raw material is: corn stigma: the D-Tagatose: mineral water=0.1～1Kg: 0.01～2Kg: 100L;

Wherein, the content of polysaccharide is 0.01～0.5g/L in the said corn stigma mineral water, and the content of total saponin(e is 0.01～0.1g/L, and content of total flavone is 0.01～0.1g/L;

Concrete preparation method comprises the steps:

(1) takes by weighing corn stigma, D-Tagatose and mineral water according to aforementioned proportion, then corn stigma is put into closed container;

(2) with the mineral water preheating, under 85～95 ℃ condition, use the mineral water of preheating that corn stigma is carried out hot extracting then, carry out Separation of Solid and Liquid again, obtain the A that filtrates;

(3) the filtrating A process cascade filtration that extracting is obtained obtains the corn stigma water extract;

(4) in the corn stigma water extract, add the D-Tagatose, then the corn stigma water extract is detected, wherein the content of polysaccharide is 0.01～0.5g/L, and the content of total saponin(e is 0.01～0.1g/L, and content of total flavone is 0.01～0.1g/L;

(5) high-temperature short-time sterilization is cooled to 90 ℃ and carries out hot filling, bottle, spray cooling, and the lamp inspection is packed, and is the corn stigma mineral water.

6. the preparation method of corn stigma mineral water as claimed in claim 5 is characterized in that, this preparation method comprises the steps:

(1) takes by weighing corn stigma, D-Tagatose and mineral water according to aforementioned proportion, then corn stigma is put into closed container;

(2) with the mineral water preheating, under 85～95 ℃ condition, use the mineral water of preheating that corn stigma is carried out hot extracting then, carry out Separation of Solid and Liquid again, obtain the A that filtrates;

(3) the filtrating A process cascade filtration that extracting is obtained obtains the corn stigma water extract;

(4) in the corn stigma water extract, add the D-Tagatose, then the corn stigma water extract is detected, wherein the content of polysaccharide is 0.01～0.5g/L, and the content of total saponin(e is 0.01～0.1g/L, and content of total flavone is 0.01～0.1g/L;

(5) high-temperature short-time sterilization is cooled to 90 ℃ and carries out hot filling, bottle, spray cooling, and the lamp inspection is packed, and is the corn stigma mineral water.

7. preparation method according to claim 6 is characterized in that, in said step (2), the mineral water of preheating is divided into 2～3 parts respectively corn stigma is carried out hot extracting, and each hot extracting time is 30min, merges each filtrating that obtains, and promptly gets the A that filtrates.

8. according to claim 6 or 7 described preparation methods, it is characterized in that, in the said step (2), under 90 ℃ condition, use the mineral water of preheating that corn stigma is carried out hot extracting.

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