Preparation method of v6-type crystal structure potato starch-fatty acid complex

Abstract

The invention discloses a preparation method of a V6-type crystal structure potato starch-fatty acid compound. The potato starch-fatty acid compound is prepared by using potato starch and fatty acid are used as the raw materials, degreasing the potato starch, building the potato starch-fatty acid compound in an ultrasonic field and purifying the potato starch-fatty acid compound. The preparation method has the advantages that defects of a chemical method and a physical method which are used for preparing the compound are overcome, the preparation method is simple to operate, low in energy consumption, high in efficiency, free of pollution and low in cost, the prepared potato starch-fatty acid compound is high in complexing index, the enzymolysis resistance of the potato starch is increased, and the prepared potato starch-fatty acid compound is promising in application prospect in food production and processing.

Description

technical field

[0001] The invention relates to the technical field of agricultural product processing, in particular to a method for preparing a V6-type crystal structure potato starch-fatty acid compound. Background technique

[0002] Starch, one of the renewable natural biodegradable materials, is composed of two different polysaccharide molecules, namely amylopectin and amylose, in which amylose is composed of dehydrated glucose residues through α-1→4 A linear polysaccharide linked by glycosidic bonds. The single helical chain of amylose has a cylindrical cavity structure, the inner cavity is hydrophobic, and the outer side is hydrophilic due to more hydroxyl groups. This amphiphilic structure of "the inner cavity is hydrophobic and the outer side is hydrophilic" makes Amylose can be used as a host molecule to include hydrophobic guest molecules into its cavity to form inclusion complexes through hydrophobic interactions.

[0003] Amylose interacts with small linear gu...

Examples

Embodiment 1

[0029] A kind of preparation method of potato starch-lauric acid compound, comprises the following steps:

[0030] (1) Preparation of defatted potato starch: put potato starch into a filter paper tube, fold and seal the open end and put it in a Soxhlet extractor extraction tube, use 75% n-propanol as organic solvent, Soxhlet extraction 8 h, after evaporating the organic solvent to dryness, place the defatted potato starch sample in an oven at 50° C. for 24 h to obtain dried defatted potato starch.

[0031] (2) Construction of potato starch-lauric acid complex in an ultrasonic field: Add the defatted potato starch obtained in step (1) into deionized water to prepare a starch milk solution with a concentration of 10% by mass; 2% lauric acid is dissolved in ethanol with a volume fraction of 95%, added to the starch milk solution, placed in a water bath magnetic stirrer at 95°C for 120min, and the magnetic stirrer speed is 350rpm. After the reaction, mix The solution was slowly c...

Embodiment 2

[0034] A kind of preparation method of potato starch-myristic acid compound, comprises the following steps:

[0035] (1) Preparation of defatted potato starch: put potato starch into a filter paper tube, fold and seal the open end and put it in a Soxhlet extractor extraction tube, use 75% n-propanol as organic solvent, Soxhlet extraction 8 h, after evaporating the organic solvent to dryness, place the defatted potato starch sample in an oven at 50° C. for 24 h to obtain dried defatted potato starch.

[0036] (2) Construction of potato starch-myristic acid complex in an ultrasonic field: Add the defatted potato starch obtained in step (1) into deionized water to prepare a starch milk solution with a concentration of 8% by mass; Myristic acid with a mass percentage of 3% is dissolved in ethanol with a volume fraction of 95%, added to the starch milk solution, placed in a water bath magnetic stirrer, and gelatinized at 95°C for 120min, and the magnetic stirrer speed is 350rpm. Af...

Embodiment 3

[0039] A kind of preparation method of potato starch-palmitic acid compound, comprises the following steps:

[0040] (1) Preparation of defatted potato starch: put potato starch into a filter paper tube, fold and seal the open end and put it in a Soxhlet extractor extraction tube, use 75% n-propanol as organic solvent, Soxhlet extraction 8 h, after evaporating the organic solvent to dryness, place the defatted potato starch sample in an oven at 50° C. for 24 h to obtain dried defatted potato starch.

[0041](2) Construction of potato starch-palmitic acid complex in an ultrasonic field: Add the defatted potato starch obtained in step (1) into deionized water to prepare a starch milk solution with a concentration of 10% by mass; 4% palmitic acid is dissolved in ethanol with a volume fraction of 95%, added to the starch milk solution, placed in a water bath magnetic stirrer at 95°C for 120min, and the magnetic stirrer rotates at 350rpm. After the reaction, mix The solution was s...

technical field

[0001] The invention relates to the technical field of agricultural product processing, in particular to a method for preparing a V6-type crystal structure potato starch-fatty acid compound. Background technique

[0002] Starch, one of the renewable natural biodegradable materials, is composed of two different polysaccharide molecules, namely amylopectin and amylose, in which amylose is composed of dehydrated glucose residues through α-1→4 A linear polysaccharide linked by glycosidic bonds. The single helical chain of amylose has a cylindrical cavity structure, the inner cavity is hydrophobic, and the outer side is hydrophilic due to more hydroxyl groups. This amphiphilic structure of "the inner cavity is hydrophobic and the outer side is hydrophilic" makes Amylose can be used as a host molecule to include hydrophobic guest molecules into its cavity to form inclusion complexes through hydrophobic interactions.

[0003] Amylose interacts with small linear gu...

Examples

Embodiment 1

[0029] A kind of preparation method of potato starch-lauric acid compound, comprises the following steps:

[0030] (1) Preparation of defatted potato starch: put potato starch into a filter paper tube, fold and seal the open end and put it in a Soxhlet extractor extraction tube, use 75% n-propanol as organic solvent, Soxhlet extraction 8 h, after evaporating the organic solvent to dryness, place the defatted potato starch sample in an oven at 50° C. for 24 h to obtain dried defatted potato starch.

[0031] (2) Construction of potato starch-lauric acid complex in an ultrasonic field: Add the defatted potato starch obtained in step (1) into deionized water to prepare a starch milk solution with a concentration of 10% by mass; 2% lauric acid is dissolved in ethanol with a volume fraction of 95%, added to the starch milk solution, placed in a water bath magnetic stirrer at 95°C for 120min, and the magnetic stirrer speed is 350rpm. After the reaction, mix The solution was slowly c...

Embodiment 2

[0034] A kind of preparation method of potato starch-myristic acid compound, comprises the following steps:

[0035] (1) Preparation of defatted potato starch: put potato starch into a filter paper tube, fold and seal the open end and put it in a Soxhlet extractor extraction tube, use 75% n-propanol as organic solvent, Soxhlet extraction 8 h, after evaporating the organic solvent to dryness, place the defatted potato starch sample in an oven at 50° C. for 24 h to obtain dried defatted potato starch.

[0036] (2) Construction of potato starch-myristic acid complex in an ultrasonic field: Add the defatted potato starch obtained in step (1) into deionized water to prepare a starch milk solution with a concentration of 8% by mass; Myristic acid with a mass percentage of 3% is dissolved in ethanol with a volume fraction of 95%, added to the starch milk solution, placed in a water bath magnetic stirrer, and gelatinized at 95°C for 120min, and the magnetic stirrer speed is 350rpm. Af...

Embodiment 3

[0039] A kind of preparation method of potato starch-palmitic acid compound, comprises the following steps:

[0040] (1) Preparation of defatted potato starch: put potato starch into a filter paper tube, fold and seal the open end and put it in a Soxhlet extractor extraction tube, use 75% n-propanol as organic solvent, Soxhlet extraction 8 h, after evaporating the organic solvent to dryness, place the defatted potato starch sample in an oven at 50° C. for 24 h to obtain dried defatted potato starch.

[0041](2) Construction of potato starch-palmitic acid complex in an ultrasonic field: Add the defatted potato starch obtained in step (1) into deionized water to prepare a starch milk solution with a concentration of 10% by mass; 4% palmitic acid is dissolved in ethanol with a volume fraction of 95%, added to the starch milk solution, placed in a water bath magnetic stirrer at 95°C for 120min, and the magnetic stirrer rotates at 350rpm. After the reaction, mix The solution was s...