Oxygen-isolating microwave fixation method for high-quality tea

A microwave killing green, high-quality technology, which is applied in the field of tea processing, can solve the problems of unfavorable tea preservation, affecting tea quality, and reducing the aging speed, and achieves the advantages of reducing the generation of organic free radicals, improving the appearance quality, and reducing the aging speed. Effect

Active Publication Date: 2016-04-27
江苏南大耐雀生物技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] Purpose of the invention: In order to overcome the high-temperature deactivation process of tea leaves in the prior art, oxygen will produce non-enzymatic oxidation on polyphenols, amino acids, vitamins and other substances in tea leaves, which will affect the quality of tea leaves. At the same time, thermal oxygen catalysis The generation of organic free radicals stimulates the aging of tea leaves, which is unfavorable to the freshness of tea leaves. The present invention prop

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  • Oxygen-isolating microwave fixation method for high-quality tea
  • Oxygen-isolating microwave fixation method for high-quality tea
  • Oxygen-isolating microwave fixation method for high-quality tea

Examples

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[0030] Example 1:

[0031] An oxygen-isolating microwave-sterilizing method for high-quality tea, comprising the following steps:

[0032] (1) Please refer to figure 1 , adopt the microwave fixing device with the inflating and protecting gas device 2 and the vacuuming device 3 to carry out the microwave fixing of tea leaves;

[0033] (2) setting the temperature in the microwave drying warehouse 1 to be 150°C, and preheating the microwave drying warehouse 1;

[0034] (3) after the temperature in the microwave-killing warehouse 1 reaches the set temperature and is stable, put 2.0kg of fresh leaves of Longjing green tea into the microwave-killing warehouse 1, and immediately seal the microwave-killing warehouse 1;

[0035] (4) adopt the vacuuming device 3 to vacuumize the microwave drying warehouse 1 to below absolute pressure 0.01MPa, and adopt the inflatable protective gas device 2 to fill nitrogen in the microwave curing warehouse 1 to the absolute pressure in the microwave ...

Example Embodiment

[0038] Example 2:

[0039] An oxygen-isolating microwave-sterilizing method for high-quality tea, comprising the following steps:

[0040] (1) Please refer to figure 1 , adopt the microwave fixing device with the inflating and protecting gas device 2 and the vacuuming device 3 to carry out the microwave fixing of tea leaves;

[0041] (2) setting the temperature in the microwave drying warehouse 1 to be 120 °C, and preheating the microwave drying warehouse 1;

[0042] (3) after the temperature in the microwave-killing warehouse 1 reaches the set temperature and stabilizes, put 3.0kg of fresh leaves of Longjing green tea into the microwave-killing warehouse 1, and immediately seal the microwave-killing warehouse 1;

[0043] (4) adopt vacuum pumping device 3 to evacuate the degree of vacuum in the microwave drying warehouse 1 to below absolute pressure 0.01MPa, and adopt the inflatable protective gas device 2 to fill carbon dioxide in the microwave drying warehouse 1 to the absol...

Example Embodiment

[0046] Example 3:

[0047] An oxygen-isolating microwave-sterilizing method for high-quality tea, comprising the following steps:

[0048] (1) Please refer to figure 1 , adopt the microwave fixing device with the inflating and protecting gas device 2 and the vacuuming device 3 to carry out the microwave fixing of tea leaves;

[0049] (2) setting the temperature in the microwave drying warehouse 1 to be 180 °C, and preheating the microwave drying warehouse 1;

[0050] (3) after the temperature in the microwave-killing warehouse 1 reaches the set temperature and stabilizes, put 3.0kg of fresh leaves of Longjing green tea into the microwave-killing warehouse 1, and immediately seal the microwave-killing warehouse 1;

[0051] (4) The vacuuming device 3 is used to evacuate the microwave drying chamber 1 to an absolute pressure below 0.01MPa, the protective gas device 2 is used to fill the microwave drying chamber 1 with nitrogen for protection, and nitrogen is continuously suppli...

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Abstract

The invention discloses an oxygen-isolating microwave fixation method for high-quality tea. A theoretical basis and an implementation scheme of oxygen-isolating fixation of tea are put forward initially, in the microwave fixation process, inert protective gas is injected after oxygen isolation, oxygen is isolated while fixation is guaranteed, non-enzymatic oxidation of tea polyphenol, amino acid, vitamins and other nutritional substances in tea is avoided, and meanwhile, production of organic free radicals is substantially reduced; the tea subjected to fixation with the oxygen-isolating microwave fixation method retain nutritional substances in fresh leaves, such as tea polyphenol, amino acid, vitamins and the like, appearance quality such as the appearance, the soup color and the like of the tea is remarkably improved, the finished tea products with low free radical content as an interior characteristic has a longer guarantee period, the ageing speed is greatly reduced, besides, the operation cost is low, the operation is convenient and industrial production can be realized.

Description

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Claims

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Application Information

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Owner 江苏南大耐雀生物技术有限公司
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