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Microwave Vacuum Drying Technology of Lotus Seeds

A microwave vacuum drying and microwave vacuum technology, applied in the direction of preservation of seeds by drying, etc., can solve the problems of reduced edible quality and sensory quality, high water content of fresh lotus seeds, poor color and luster of dried lotus seeds, etc. The effect of controlling and shortening the drying time

Active Publication Date: 2011-12-14
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the fresh lotus seeds after harvesting have a high water content, are not resistant to storage at room temperature, are easy to change color, and are easy to rot and deteriorate, thereby reducing commodity value. Drying is an indispensable and important link in the lotus seed processing process, and dried lotus is also a folk traditional products
It usually takes 10-18 hours to dry fresh lotus seeds in a drying room. After a long time of baking, the dried lotus has poor color, poor rehydration, and relatively blunt taste, resulting in a decrease in its edible quality and sensory quality.

Method used

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  • Microwave Vacuum Drying Technology of Lotus Seeds
  • Microwave Vacuum Drying Technology of Lotus Seeds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Material selection: select fresh lotus seeds with no pests and diseases and full grains as raw materials;

[0032] (2) Remove the membrane and remove the core: the fresh lotus seeds that are picked are removed through the membrane-removing and core-removing process;

[0033] (3) Cleaning: Put the fresh lotus seeds through the core into flowing purified water for cleaning to remove impurities such as membranes;

[0034] (4) Color protection treatment: soak the fresh lotus seeds after the core treatment in the color protection solution for color protection treatment; the color protection treatment refers to soaking the fresh lotus seeds after the core treatment in the color protection solution for 20 minutes , inhibit polyphenol oxidase (PPO) in fresh lotus, prevent fresh lotus from browning; Described color protection liquid is prepared by following method: disodium edetate 0.02%, vitamin C 0.1%, all the other are purified water ;

[0035] (5) Drain: fish out the f...

Embodiment 2

[0041] (1) Material selection: select fresh lotus seeds with no pests and diseases and full grains as raw materials;

[0042] (2) Remove the membrane and remove the core: the fresh lotus seeds that are picked are removed through the membrane-removing and core-removing process;

[0043] (3) Cleaning: Put the fresh lotus seeds through the core into flowing purified water for cleaning to remove impurities such as membranes;

[0044] (4) Color protection treatment: soak the fresh lotus seeds after the core treatment in the color protection solution for color protection treatment; the color protection treatment refers to soaking the fresh lotus seeds after the core treatment in the color protection solution for 30 minutes , inhibiting the polyphenol oxidase PPO in fresh lotus, preventing the browning of fresh lotus; the color protection solution is prepared according to the following method: 0.2% disodium edetate, 0.3% vitamin C, and the rest is purified water;

[0045] (5) Drain:...

Embodiment 3

[0051] (1) Material selection: select fresh lotus seeds with no pests and diseases and full grains as raw materials;

[0052] (2) Remove the membrane and remove the core: the fresh lotus seeds that are picked are removed through the membrane-removing and core-removing process;

[0053] (3) Cleaning: Put the fresh lotus seeds through the core into flowing purified water for cleaning to remove impurities such as membranes;

[0054] (4) Color protection treatment: soak the fresh lotus seeds after the core treatment in the color protection solution for color protection treatment; the color protection treatment refers to soaking the fresh lotus seeds after the core treatment in the color protection solution for 25 minutes , inhibit the polyphenol oxidase (PPO) in fresh lotus, prevent the browning of fresh lotus; Described color protection liquid is prepared by following method: disodium edetate 0.1%, vitamin C 0.2%, all the other are purified water ;

[0055] (5) Drain: fish out ...

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Abstract

The invention provides a microwave vacuum drying process for lotus seeds, which includes material selection, film and core removal, color protection treatment, draining, microwave vacuum drying, packaging and storage to prepare dried lotus seeds. The invention aims at improving the quality research of dried lotus seeds and reducing energy consumption, and uses microwave vacuum drying technology to dry fresh lotus seeds, so as to improve the quality of dried lotus seeds and prolong the shelf life of products; the application of high-tech combined drying technology is the Drying has opened up another way out of drying, and it is easy to control in real time, the production is environmentally friendly, and it can realize truly continuous and automated clean production.

Description

technical field [0001] The invention belongs to the field of lotus seed drying, and more specifically relates to a lotus seed microwave vacuum drying process using fresh lotus seeds as raw materials. Background technique [0002] Lotus seed, also known as Shuizhidan, belongs to Nympheaaceaenelumbo Adans, and is the fruit of lotus. According to scientific research, every 100 grams of dried lotus seeds contains 16.6 grams of protein, 62 grams of carbohydrates, 2.0 grams of fat, and 89 mg of calcium. Phosphorus 285 mg, iron 6.4 mg, lotus seeds also contain vitamins B1, B2, C, carotene, glutathione, and eighteen kinds of amino acids needed by the human body, rich in alkaloids, flavonoids and Superoxide Dismutase (SOD) Nutrients. In addition, the oxidized glucocorticoids contained in lotus seeds have anti-cancer effects. In addition to being a precious nourishing food, lotus seeds are also a valuable medicine. It has the functions of invigorating the kidney, strengthening the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B9/08
Inventor 郑宝东刘文聪曾绍校张怡郑亚凤
Owner FUJIAN AGRI & FORESTRY UNIV