In recent years, due to the popularization of computer and cell phone, more and more young people are suffering from visual fatigue. Through market research, it is found that the breath-freshening pressed tablet candy is generally loved by modern young people because of its portability and has a huge market demand, which can be used as a good carrier of functional additives for relieving visual fatigue, so that consumers can relieve visual fatigue in their daily leisure.

Therefore, the proanthocyanidins and vitamin A, which have the function of relieving visual fatigue, are protected in the form of microcapsules and added into the press candy, which effectively ensures that the proanthocyanidins and vitamin A can pass through the gastric barriers and be fully absorbed in human intestines, and thus play the role of relieving visual fatigue.

On this basis, the functional sweetener oligoisomaltitol, breath-freshening peppermint and fruit powder with various flavors are added, and the multifunctional tea polyphenol is used as an antioxidant, so as to produce a functional snack food candy that not only relieves visual fatigue, but also freshens the breath and protects the teeth.

Ingredients and Methods

1. Raw materials

Corn starch, konjac flour, proanthocyanidins, vitamin A, peppermint flavor, fruit powder, β-cyclodextrin, maltodextrin, gum arabic and oligoisomaltitol.

2. Main Instruments and Equipment

Pulverizer, 100 mesh sieve, magnetic mixer, colloid mill, homogenizer, granulator, tablet press and spray dryer.

3. Process flow

①Pulverize the main materials and auxiliary materials →sieve →mix ←microencapsulation (add proanthocyanidins, VA) ← β-dextrin, maltodextrin;

② mixture (add wetting agent) → wet granulation → drying → granulation (add lubricant) → total mixing → tabletting → sterilization → packaging → finished product.

4. Operation points

When drying, the drying temperature should be 50～60℃, and the particles should be turned over in the middle until the particles are uniformly dried;

When pressing tablets, the weight of tablets is about 100mg, the hardness is suitable, and the disintegration degree meets the requirements;

When embedding, take a certain amount of maltodextrin dissolved in distilled water, add a quantitative amount of β-cyclodextrin and a quantitative amount of gum arabic solution, slowly add anthocyanin, stir evenly, spray drying, forming microcapsule particles.

Results and Analysis

Exploration of the formula ratio and production process of pressure tablet candy

(1) The fruit powder, oligoisomaltitol, konjac fine powder and corn starch slurry of the pressure tablet confectionery were used as binder, and the better dosage was 15%, 30% ～ 40%, 10%, 10% ～ 12%, respectively.

When the ratio of each component in the filler is at the optimal level, 3.5% water addition can make the pressure tablet candy obtain delicious taste and excellent tissue state.

(2) Granularity of granulation, pressure of candy making, and amount of lubricant used On the basis of the optimal formula, the optimal combination of process parameters is 100 mesh, 20kN, and the amount of lubricant (magnesium stearate ) used 0.5%;

The optimum process conditions for microencapsulation were a feed temperature of 60°C, a centrifugal atomizer speed of 15,000 rpm, an inlet air temperature of 190°C, and a homogenizing pressure of 40MPa;

The optimal process conditions are 40% solids, 0.2% emulsifier addition, and 75% gum arabic.

(3) additives, nutritional enhancers added. Additives a carrageenan, oligomeric isomaltitol maximum use of national standards for 5.0g/kg, according to the need to use the appropriate amount, the product was added 4.5g/kg.

Nutritional fortifier a vitamin national standard maximum use 2330 ~ 4000 μg/kg, this product adds 3500 μg/kg.

(4) Packaging. External packaging using less toxic PP, Ps and other plastic sheet thermoforming rectangular box, convenient and easy to carry, moisture and corrosion-resistant internal use of moisture-resistant PVC material of the soft packaging bag.

The results of the study showed that

Taking a trace amount of functional factors to relieve visual fatigue can achieve the effect of relieving visual fatigue and improving eyesight.

This kind of pressure tablet candy process comprehensive consideration of the function of relieving visual fatigue, both taste and flavor, carrying and preservation, and at the same time choose the health care function of sugar alcohol as a sweetener, in line with the international trend of food to low-sugar, low calorie, the development of health food, especially for the modern society in the work of the study of the pressure of the young and middle-aged people, has a broad market prospect.