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Processing method of freeze-dried wolfberry fresh fruits

A processing method and technology for dried fresh fruit, applied in the processing field of freeze-dried fresh fruit wolfberry, can solve the problems affecting the development of wolfberry industry, large nutrient loss, secondary pollution, etc., and achieve the effects of bright color, crisp taste and prolonging shelf life

Inactive Publication Date: 2017-06-30
宁夏森淼枸杞科技开发有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most of the fresh fruits of wolfberry in China are still dried in the traditional way. During the drying process, there are common problems such as serious secondary pollution, large nutritional loss and short shelf life, which have affected the development of the wolfberry industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Select mature fresh goji berries with complete fruit, bright color, no stalk, and no pests and diseases, and send them to the pre-cooling room for pre-cooling and cooling within 2 hours of picking, so that the temperature of the goji fruit core reaches 6°C. Soak the pre-cooled wolfberry raw material in 1% sodium carbonate solution for 20 seconds, take it out, drain the excess dewaxing agent solution, put it in a dewaxing tray for 60 minutes, and wash the fruit surface with tap water dewaxing agent, and then rinse with pure water until the rinse water is neutral.

[0028] After the cleaning process, the fresh wolfberry fruit is frozen through the fluid state quick-freezing equipment, so that the core temperature reaches -30°C, and then placed in an environment of 0°C for slowing treatment, so that the core temperature of the fresh wolfberry fruit rises to -15°C Finally, spread the slowed fresh wolfberry fruit evenly in the freeze-drying tray with a thickness of 3cm, and ...

Embodiment 2

[0031] Select mature fresh goji berries with complete fruit, bright color, no stalk, and no pests and diseases, and send them to the pre-cooling room for pre-cooling and cooling within 2 hours of picking, so that the temperature of the goji fruit core reaches 3 °C. Soak the pre-cooled wolfberry raw material in 2% sodium carbonate solution for 20 seconds, take it out, drain the excess dewaxing agent solution, put it in a dewaxing tray for 70 minutes, and wash the fruit surface with tap water dewaxing agent, and then rinse with pure water until the rinse water is neutral.

[0032] After the cleaning process, the fresh wolfberry fruit is frozen through the fluid state quick-freezing equipment, so that the core temperature reaches -30°C, and then placed in an environment of 0°C for slowing treatment, so that the core temperature of the fresh wolfberry fruit rises to -16°C Finally, spread the slowed fresh wolfberry fruit evenly in the freeze-drying tray with a thickness of 3cm, and...

Embodiment 3

[0035] Select mature fresh goji berries with complete fruit, bright color, no stalk, and no pests and diseases, and send them to the pre-cooling room for pre-cooling and cooling within 2 hours of picking, so that the temperature of the goji fruit core reaches 9 °C. Soak the pre-cooled wolfberry raw material in 3% sodium carbonate solution for 20 seconds, take it out, drain the excess dewaxing agent solution, put it in a dewaxing tray for 80 minutes, and wash the fruit surface with tap water dewaxing agent, and then rinse with pure water until the rinse water is neutral.

[0036] After the cleaning process, the fresh wolfberry fruit is frozen through the fluid state quick-freezing equipment, so that the core temperature reaches -30°C, and then placed in an environment of 0°C for slowing treatment, so that the core temperature of the fresh wolfberry fruit rises to -18°C Finally, spread the slowed fresh wolfberry fruit evenly in the freeze-drying tray with a thickness of 3cm, and...

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PUM

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Abstract

The invention relates to a processing method of freeze-dried wolfberry fresh fruits. The processing method is characterized by comprising the following steps: (1) raw material selection: selecting ripened wolfberry fresh fruits, carrying out pre-cooling treatment by sending the wolfberry fresh fruits into a pre-cooling store within 2 h of picking until core temperature of the wolfberry fresh fruits is less than or equal to 10 DEG C; (2) de-waxing treatment; (3) cleaning: washing the wolfberry fresh fruits processed in the step (2) with water, and cleaning with pure water and then draining; (4) negative catalysis: freezing the wolfberry fresh fruits cleaned in the step (3) by fluidized freezing equipment until the core temperature is less than or equal to minus 30 DEG C, and carrying out negative catalysis treatment in an environment of 0 DEG C, and making the core temperature of the wolfberry fresh fruits rise to minus 15 DEG C to minus 18 DEG C; (5) vacuum freeze-drying; and (6) packaging. Through tests, it proves that color of the freeze-dried wolfberry processed by the method is close to the natural color of wolfberry and the color is more stable. By the method, shelf life of the freeze-dried wolfberry product is effectively prolonged by more than one year.

Description

technical field [0001] The invention relates to a processing method of freeze-dried fresh wolfberry fruit. Background technique [0002] Lycium barbarum (Lycium barbarum L.) is a precious Chinese herbal medicine with a long history in my country, which has the same origin as medicine and food, and is well-known both at home and abroad. Traditional Chinese medicine believes that wolfberry is flat in nature, sweet in taste, slightly bitter, and non-toxic. It has the effects of nourishing the liver and lungs, improving eyesight, strengthening muscles and bones. With people's attention to the health function of wolfberry and the in-depth study of its pharmacology, modern medical research has proved that wolfberry has the functions of regulating immunity, anti-oxidation, anti-aging, anti-tumor, anti-fatigue, lowering blood fat, lowering blood sugar, lowering blood pressure, nourishing kidney, and protecting the body. Liver, eyesight, beauty, brain, detoxification, protection of ...

Claims

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Application Information

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IPC IPC(8): A23L19/00A23B7/024A23B7/045
Inventor 王梦泽赵小锋沈效东
Owner 宁夏森淼枸杞科技开发有限公司
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