Production method of dried blueberries

A production method and technology of blueberry fruit, which are applied in food ultrasonic treatment, confectionery, confectionary industry, etc., can solve the problems of single nutritional content, high surface viscosity, sour taste, etc., to increase nutritional content, brighten the surface, and improve taste Effect

Inactive Publication Date: 2017-07-25
JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dried blueberry fruit is a fashionable and nutritious and healthy snack food, but there are still some defects in the existing products on the market, such as: hard taste, rich dregs, sour taste, high surface viscosity, single nutritional content, etc.

Method used

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  • Production method of dried blueberries

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Experimental program
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Effect test

Embodiment 1

[0043] Sorting, removing impurities, cleaning, and drying fresh blueberries of the rabbit-eye variety to obtain 10 kg of clean blueberries. Then quickly freeze in a -40°C refrigerator until the skin of the blueberry bursts. Prepare 15kg of soaking liquid, which contains 6kg of fructose syrup, 3kg of honey, 0.15kg of maltodextrin, 0.75kg of inulin, 0.6kg of seaweed polysaccharide, 0.6kg of arabinose, 0.015kg of tea polyphenol, and the rest is pure water. Then adjust the pH of the soaking solution to 4.5 with citric acid. Immerse 10kg of blueberries in the soaking solution, and carry out microwave treatment (400w), until the soaking solution boils, and keep boiling for 1min, and then soak at 20°C. Ultrasonic treatment (power 400w) was performed once for 15 minutes after soaking for 5h, 10h and 15h respectively. After 15 hours, drain the soaked blueberries, first dry them with hot air at 40°C for 8 hours, then dry them with hot air at 60°C for 15 hours, and finally dry them wit...

Embodiment 2

[0050]Fresh blueberries of the Blue Rain variety were sorted, removed, washed, and dried to obtain 5kg of clean blueberries. Then quickly freeze in a -80°C refrigerator until the skin of the blueberry bursts. Prepare 10kg of soaking liquid, which contains 5kg of fructose syrup, 1.5kg of honey, 0.3kg of maltodextrin, 0.8kg of inulin, 0.2kg of seaweed polysaccharide, 0.8kg of arabinose, 0.015kg of tea polyphenol, and the rest is pure water , and then adjust the pH of the soaking solution to 6.0 with citric acid. Immerse 5kg of blueberries in the soaking solution, and perform microwave treatment (600w) until the soaking solution boils, and keep boiling for 2 minutes, and then soak at 30°C. After soaking for 10h and 20h, respectively, perform a 20min ultrasonic treatment (power 300w). After 20 hours, drain the soaked blueberries, first dry them with hot air at 50°C for 5 hours, then dry them with hot air at 70°C for 10 hours, and finally dry them with hot air at 50°C until the w...

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Abstract

The invention discloses a production method of dried blueberries. The production method is suitable for producing various varieties of dried blueberries; by combining the fast freezing and microwave and ultrasonic treatment, the soaking time is reduced, and the soaking efficiency is improved; by adopting the microwave heating treatment, the taste of the dried blueberries is improved; by adding functional nutrients into a soaking solution, nutrients and a functional value of the dried blueberries are increased; and the surface is coated with functional vegetable oil, so that the impression quality of the dried blueberries is improved, and the nutrients are increased. The dried blueberries produced by virtue of the method is bright in surface, is not sticky, is delicate in taste, elastic, chewable, moderate in sweet and sour taste, rich in nutrients, high in antioxidation property, and long in shelf life.

Description

technical field [0001] The invention belongs to the field of food processing, and in particular relates to a method for preparing dried blueberries. Background technique [0002] Blueberry scientific name Vaccinium, also known as blueberry, etc., belongs to Rhododendron Vaccinium plant, is a perennial green leaf or evergreen shrub. Blueberry is a small berry fruit tree. There are more than 450 varieties in the world, mainly distributed in the temperate and subtropical regions of the northern hemisphere. There are about 91 species and 28 varieties in China, mainly distributed in the northeast and southwest regions. Blueberry fruit is sweet and sour, rich in nutrients, rich in organic acids, vitamins, minerals, unsaturated fatty acids and trace elements, especially anthocyanins. Anthocyanins have anti-inflammatory, anti-infection, anti-oxidation, anti-aging and other effects, and are known as the No. 1 antioxidant for human beings. Blueberries have high nutritional value an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23G3/48A23G3/36A23G3/54A23L5/20A23L5/30A23B4/20
CPCA23G3/48A23B4/20A23G3/36A23G3/54A23V2002/00A23V2250/712A23V2300/48
Inventor 李亚辉周剑忠王英
Owner JIANGSU ACAD OF AGRI SCI
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