Microwave treatment method and system for continuously increasing digestion resistance of potato starch

A potato starch and microwave treatment technology, which is applied in the field of food processing, can solve the problems of device and material development lag, and hinder the application of microwave in resistant starch, so as to improve the digestion resistance and increase the formation amount

Pending Publication Date: 2019-09-17
INST OF AGRO FOOD SCI & TECH SHANDONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] There are many ways to prepare resistant starch. Microwave is a safe and harmless physical treatment method. On the one hand, it can increase the amylose content in starch by degrading unstable amylopectin; on the other hand, microwave treatment can make The rapid temperature rise inside the starch causes the starch to absorb water and swell to gelatinize. After low-temperature treatment, the starch will be aged and regenerated. Starch molecules will contact and interweave to form a grid structure due to hydrogen bonds, and finally recrystallize. However, due to the current laboratory research on microwave processing technology In most cases, the development of microwave reaction equipment, devices, and materials suitable for industrialization is seriously lagging behind, which hinders the application of microwaves in the resistant starch industry. Therefore, it is very important to develop a microwave treatment equipment that can continuously improve the digestion resistance of starch. necessary

Method used

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  • Microwave treatment method and system for continuously increasing digestion resistance of potato starch
  • Microwave treatment method and system for continuously increasing digestion resistance of potato starch
  • Microwave treatment method and system for continuously increasing digestion resistance of potato starch

Examples

Experimental program
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Effect test

Embodiment 1A

[0059] A microwave treatment system that can continuously improve the digestion resistance of starch, such as figure 1 As shown, it comprises a mixing heating tank 1, a mixing cooling tank 2, a reaction tank 5, an ultra-high pressure vessel 17 and a cooling tank 8, and a mixing heating tank 1, a mixing cooling tank 2, a reaction tank 5 and a cooling tank 8 pass through the The feeding pipe 13 of the pump 3 and the check valve 12 is connected in sequence, and the feeding pump 3 and the check valve 12 are sequentially arranged on the feeding pipe 13 along the conveying direction of the material, and the starch in the previous process can be pumped through the feeding pump 3 To the next process, and the check valve 12 can ensure that the material will not flow back during the conveying process.

[0060] The outside of the mixing heating tank 1 is covered with a heating jacket 14, and the heating jacket 14 is provided with a medium inlet and a medium outlet. The heating medium in ...

Embodiment 1B

[0068] The difference with the structure of Example 1A is that a microwave treatment system that can continuously improve the digestion resistance of starch, such as figure 1 As shown, it includes a mixing heating tank 1, a mixing cooling tank 2, a reaction tank 5 and a cooling tank 8, and the mixing heating tank 1, the mixing cooling tank 2, the reaction tank 5 and the cooling tank 8 respectively pass through with a feeding pump 3 and a backstop The feeding pipe 13 of the valve 12 is connected in sequence, and the feeding pump 3 and the check valve 12 are sequentially arranged along the conveying direction of the material on the feeding pipe 13, and the starch in the previous process can be pumped to the next process through the feeding pump 3, And the check valve 12 can ensure that the material will not flow back during the conveying process. The reaction tank 5 is a tank body that can be pressurized, and its pressure can reach about 150MPa. Simultaneously with microwave tr...

Embodiment 2

[0070] The method for continuously improving the microwave treatment of potato starch digestion resistance comprises the following steps:

[0071] In (1), weigh the potato tubers, wash off the surface sediment, cut into cubes, add water, the ratio of material to liquid is 1:2, beat, stand for 3 hours, filter, wash the filter residue with water, stand still, and then pour off the upper layer liquid, to obtain a starch emulsion;

[0072] (2) Heat the potato starch emulsion in (1) to 55°C in a mixing heating tank, then transport it to a mixing cooling tank to cool to 32°C after cooling, then transport it to a microwave generator, and transport it to an ultra-high pressure container after microwave treatment. Ultra-high pressure treatment, and then enter the cooling tank for cooling; the power of microwave treatment is 300W, and the treatment is 100s; the pressure of ultra-high pressure treatment is 580MPa;

[0073](3) Leave the cooled starch milk in (2) for 5 hours, filter, wash...

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Abstract

The invention provides a microwave treatment method and system for continuously increasing digestion resistance of potato starch. The method comprises the following steps of (1) preparing potato starch emulsion; (2) heating the potato starch emulsion obtained in the step (1), performing cooling, and performing microwave treatment and ultrahigh-pressure treatment; and (3) performing standing on starch milk cooled in the step (2), performing filtration, performing washing, continuing adding water to filter residues, performing standing, pouring upper-layer liquid, performing constant-temperature vibration, performing cooling and cleaning, performing ageing, performing sucking filtration, performing hot air drying, performing drying, and performing screening so as to obtain finished products of the potato starch. According to the microwave treatment method disclosed by the invention, improvement is performed from the technology and equipment, firstly heating treatment is performed on starch emulsion, then cooling is performed, then microwave treatment is performed, cooling is performed once again, constant-temperature vibration is performed, and in the microwave treatment system capable of continuously increasing the digestion resistance of the starch, starch raw materials are subjected to repeated heating and cooling, so that ordering and retrogradation effects of starch molecules are facilitated, and the formation quantity of the resistant starch is effectively increased.

Description

technical field [0001] The invention belongs to the technical field of food processing, and relates to a microwave treatment method capable of continuously improving the digestion resistance of starch, and also relates to a system used in the method. Background technique [0002] About the preparation method of potato RS, mainly contain following method: [0003] (1) Autoclave method: Autoclaving is one of the commonly used methods for preparing RS. Starch milk is completely gelatinized under high temperature and high pressure, and RS is obtained after aging and retrogradation. [0004] (2) Enzymatic hydrolysis and autoclaving: On the basis of autoclaving, enzymatic treatment can be added to further increase the yield of RS. When there are at least 2 glucose residues on the side chain of amylopectin, debranching enzymes such as pullulanase can hydrolyze the α-1,6 glycosidic bond. In addition, α-amylase can cut α-1,4 glucosidic bonds, thereby rapidly cutting off the starch ...

Claims

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Application Information

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IPC IPC(8): A23L29/30A23L5/30
CPCA23L29/30A23L5/34
Inventor 刘丽娜徐同成杜方岭宗爱珍邱斌刘玮贾敏
Owner INST OF AGRO FOOD SCI & TECH SHANDONG ACAD OF AGRI SCI
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