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Microwave vacuum drying process for lotus seed

A technology of microwave vacuum drying and lotus seeds, which is applied in the direction of drying and preserving seeds, can solve the problems of reduced edible quality and sensory quality, high water content of fresh lotus seeds, and poor color of dried lotus seeds, and achieves reduced activity and easy real-time control , The effect of shortening the drying time

Active Publication Date: 2009-11-18
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 process for lotus seed

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 the polyphenol oxidase (PPO) in fresh lotus, prevent the browning of fresh lotus; Described color protection solution is prepared by the following method: disodium edetate 0.02%, vitamin C 0.1%, all the other are purification water;

[0035] (5) Drain:...

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 by the following method: 0.2% disodium edetate, 0.3% vitamin C, and the rest is purified water;

[0045] (5) Drain: fish out ...

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 solution is prepared by the following method: disodium edetate 0.1%, vitamin C 0.2%, all the other are purified water;

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

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Abstract

The invention provides a microwave vacuum drying process for lotus seeds, comprising the following steps of: selecting materials, removing films and cores, protecting color, dewatering, vacuum drying by microwave, packaging and storing, thus preparing the dry lotus seed product. The process aims at improving the quality research of the dry lotus seed and reducing the energy consumption, dries the fresh lotus seeds by microwave vacuum drying technology, improves the quality of the lotus seeds, and prolongs the shelf life of the product; the application of the high combination drying technology inaugurates another dry preparation way for drying preparation of fresh lotus seeds; the process is easy for instant control and the production is environment-protective; and the real continuous automatic clean production can be realized.

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 Applications(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
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