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Method for processing quick-frozen fresh lotus

A processing method and fresh lotus technology are applied in the field of quick-frozen agricultural product preparation to achieve the effects of strong operability, reducing the temperature difference between inside and outside, and ensuring product quality

Active Publication Date: 2011-02-09
福建闽江源绿田实业投资发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, fresh lotus seeds after harvesting have a high water content, are not resistant to storage at room temperature, are easy to change color, are easy to rot and deteriorate, and reduce commodity value. It is not enough to maintain the original taste of fresh lotus seeds. The quick-freezing processing technology can maintain the original quality characteristics of fresh lotus seeds to the greatest extent. It is convenient to eat, prolongs the preservation period of fresh lotus seeds, and effectively promotes the development of lotus seeds industrialization.

Method used

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  • Method for processing quick-frozen fresh lotus

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Effect test

Embodiment 1

[0039] (1) Fresh lotus acquisition: "Jianlian" is used as the raw material, the seeds are plump, uniform in size, free from diseases and insect pests, and the maturity is 80%, and the accepted raw materials are kept fresh in a high-temperature warehouse at 5°C to 10°C;

[0040] (2) Pretreatment: manual shelling, film removal, core-through, core-through rate ≥ 97%, after core-through, wash in water at 10°C~15°C, drain and set aside;

[0041] (3) Low-temperature vacuum infusion, immersion pre-cooling: quantitatively weigh compound color-protecting agent (0.1% citric acid + 0.05% phytic acid), compound antifreeze agent (1% sucrose + 0.05% glycerin + 0.1% compound phosphate) respectively After dissolving and filtering, mix to make impregnated pre-cooling liquid, and then pour it into the vacuum pre-cooling tank after cooling to 1℃~5℃, then put the pretreated fresh lotus into the vacuum pre-cooling tank for low-temperature vacuum perfusion, Impregnation pre-cooling, vacuum paramete...

Embodiment 2

[0046] (1) Fresh lotus acquisition: "Jianlian" is used as the raw material, the seeds are plump, uniform in size, free from diseases and insect pests, and the maturity is 90%, and the accepted raw materials are kept fresh in a high-temperature storage at 5°C to 10°C;

[0047] (2) Pretreatment: manual shelling, film removal, core-through, core-through rate ≥ 97%, after core-through, wash in water at 10°C~15°C, drain and set aside;

[0048] (3) Low-temperature vacuum infusion, immersion pre-cooling: Quantitatively weigh compound color-protecting agent (0.2% citric acid + 0.15% phytic acid), compound antifreeze agent (2% sucrose + 0.08% glycerin + 0.3% compound phosphate) respectively After dissolving and filtering, mix to make impregnated pre-cooling liquid, and then pour it into the vacuum pre-cooling tank after cooling to 1℃~5℃, then put the pretreated fresh lotus into the vacuum pre-cooling tank for low-temperature vacuum perfusion, Impregnation pre-cooling, vacuum parameters: ...

Embodiment 3

[0053] The specific preparation steps of the processing method of the quick-frozen fresh lotus root of the present invention are as follows:

[0054] 1) Fresh lotus harvesting: select fresh lotus seeds with plump seeds, uniform size, no pests and diseases, and maturity of more than 80% for harvesting;

[0055] 2) Pretreatment: shelling, film removal, and core processing. After core cores are put into water for cleaning, drain and set aside;

[0056] 3) Low-temperature vacuum infusion, immersion pre-cooling: Weigh compound color-protecting agent (0.15% citric acid + 0.1% phytic acid), compound antifreeze (1.5% sucrose, 0.06% glycerin, 0.2% Composite phosphate, wherein the composite phosphate is sodium tripolyphosphate: sodium hexametaphosphate: sodium pyrophosphate = 3:3:1) are dissolved and filtered separately and mixed to make impregnation pre-cooling liquid, and then cooled to 1 After ℃~5℃, pour into the vacuum pre-cooling tank, and then put the pretreated fresh lotus into ...

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Abstract

The invention provides quick-frozen fresh lotus processing technology. In the technology, a quick-frozen fresh lotus finished product is obtained by the harvesting of fresh lotus, shelling, stripping, core hollowing, low-temperature vacuum filling, impregnation for pre-cooling, draining, quick-freezing, packaging and cold storage. Due to the adoption of the low-temperature vacuum filling technology to combine pre-cooling, color conservation and anti-freezing processes, the technology inhibits the activity of PPO and POD, prevents the browning of the quick-frozen fresh lotus in the processing and storage, reduces the damage and softening of tissue cells, endows the product with crisp texture and faint scent, improves the ion concentration and osmotic pressure of the cells of the fresh lotus, effectively rises the vitrification transition temperature, promotes the exhaust of air from tissues, reduces the swelling pressure of ice crystals, prevents low-temperature breakage, shortens the processing time, is easy to control, high in operability, less in energy consumption and suitable for the large-scale production of the quick-frozen fresh lotus, and develops a new way for the deep processing of the lotus industry. The product completely keeps the original taste and smell of the fresh lotus, has the faint scent and is convenient to take.

Description

technical field [0001] The invention belongs to the field of quick-frozen agricultural product preparation, and in particular relates to a processing method of quick-frozen fresh lotus. Background technique [0002] Lotus seed, also known as Shuizhidan, belongs to the genus Nympheaaceaenelumbo Adans of the family Nymphaeaceae. It is the fruit of lotus and is a high-quality medicinal and edible resource in my country. 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, 89 mg of calcium, 285 mg of phosphorus, and 6.4 mg of iron. Lotus seeds also contain vitamins B1, B2, C and 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 seed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/055
Inventor 郑宝东刘文聪张怡林作兴田继延
Owner 福建闽江源绿田实业投资发展有限公司
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