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Ultrasonic preparation method of sagittaria sagittifolia RS5 type resistant starch and application in functional food

A kind of Cigu starch and ultrasonic technology, which is applied in the field of resistant starch preparation, can solve the problems such as the ultrasonic preparation method of Cigu starch RS5 type resistant starch and the like, and achieve the effects of good application prospect, high content and simple process operation.

Pending Publication Date: 2021-09-21
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although ultrasonic technology has been widely used in the field of starch modification, there is no report on the ultrasonic preparation method of arrowroot RS5 resistant starch

Method used

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  • Ultrasonic preparation method of sagittaria sagittifolia RS5 type resistant starch and application in functional food
  • Ultrasonic preparation method of sagittaria sagittifolia RS5 type resistant starch and application in functional food
  • Ultrasonic preparation method of sagittaria sagittifolia RS5 type resistant starch and application in functional food

Examples

Experimental program
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Effect test

preparation example Construction

[0058] The preparation method of arrowroot starch, carries out according to the following steps:

[0059] (1) Soak Sagittarius in 4L of distilled water at 4°C for 12 hours;

[0060] (2) After peeling and cutting the arrowroot, use a mixer to pulverize it for 5 minutes;

[0061] (3) Dilute the slurry to 10 times with distilled water, then use NaOH solution to adjust the pH to 10.0;

[0062] (4) After the diluted slurry is magnetically stirred for 1 hour, filter through a 75-mesh sieve to remove fibers;

[0063] (5) Centrifuge the filtrate for 30 minutes (3000×g), discard the supernatant, and dry the white precipitate in an oven at 40°C to obtain Sagittarius starch, which is packaged;

[0064] (6) Measure the swelling power of the arrowroot starch prepared in step (5).

[0065] Determination of the swelling power of arrowroot starch: the swelling force of arrowroot starch is as follows: figure 2 shown. In the temperature range of 50°C to 90°C, its solubility and swelling p...

Embodiment 1

[0070] Embodiment 1: Preparation of Sagittarius starch-linoleic acid complex at different ultrasonic frequencies:

[0071] (1) After dissolving 0.3mL linoleic acid in 40mL of absolute ethanol, add it to 10% (m / v) sagittarius starch solution (6g sagittarius starch dispersed in 60mL distilled water), stir at 90°C for 30min, starch After the paste is cooled to room temperature, put it into a high-pressure resistant plastic airtight bag;

[0072] (2) Step (1) mixture is transferred to multi-frequency power ultrasonic equipment and carried out cold water bath ultrasonic treatment, ultrasonic time is 30min, ultrasonic power density is 300W / L, ultrasonic frequency (20kHz, 40kHz, 60kHz, 20kHz / 40kHz, 20kHz / 60kHz, 40kHz / 60kHz, 20kHz / 40kHz / 60kHz), the ultrasonic intermittent ratio is 10s / 4s;

[0073] (3) The mixture obtained in step (2) was centrifuged at 4000 rpm for 10 min, then washed and centrifuged three times with 50% ethanol solution to obtain a precipitate;

[0074] (4) drying...

Embodiment 2

[0079] Example 2: Preparation of arrowroot starch-stearic acid complex at different ultrasonic times

[0080] (1) Stir starch and stearic acid (10%, dry starch base) at 90°C for 20 minutes, and then put it into a high-pressure resistant plastic bag;

[0081] (2) Under the conditions of ultrasonic frequency 20 / 40kHz, ultrasonic power density 300W / L, ultrasonic time (20, 40, 60) min, ultrasonic intermittent ratio 10s / 4s, the mixture prepared in step (1) is Sonication in cold water bath;

[0082] (3) Centrifuge the sample prepared in step (2) for 10 min at 4000 rpm, then wash and centrifuge three times with 50% ethanol solution to obtain a precipitate;

[0083] (4) drying the precipitate obtained in step (3) in an oven at 40° C. for 24 hours to obtain the arrowroot starch-stearic acid complex prepared by ultrasound.

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Abstract

The invention discloses an ultrasonic preparation method of sagittaria sagittifolia RS5 type resistant starch and application in functional food, and belongs to the technical field of resistant starch preparation. The influence of ultrasonic frequency on the performance and structure of a sagittaria sagittifolia starch-linoleic acid compound is researched, and the influence of ultrasonic time on the performance and structure of the sagittaria sagittifolia starch-linoleic acid compound is also researched. The influence of ultrasound on the stability and digestion resistance of the sagittaria sagittifolia RS5 type resistant starch is observed by measuring the large complexing index of the sagittaria sagittifolia starch-lipid compound and in-vitro digestion; the particle morphology and the crystal structure type of the sagittaria sagittifolia RS5 type resistant starch are observed through a scanning electron microscope, X-ray diffraction and Fourier transform infrared spectroscopy. The method provides a green physical processing mode for the preparation of the starch-lipid compound, is simple in process and advanced in technology, and has a good prospect in the aspects of food processing and functional food application.

Description

technical field [0001] The invention belongs to the technical field of resistant starch preparation, and in particular relates to a method for preparing sagittarius starch-lipid complex by ultrasonic waves. Background technique [0002] Arrowhead Arrowhead (Sagittaria sagittifolia L.), also known as Cigu, Cizi, and White Chestnut, belongs to the herbaceous plant of Alismaceae. Arrowhead is rich in carbohydrates, protein, fat, minerals and other nutrients. It has a variety of medicinal values, such as cooling blood and stopping bleeding, relieving cough and treating stranguria, dispelling stagnation and detoxification, etc. Sagittarius starch is the main nutrient component in Sagittarius, accounting for about 50% of its dry weight, and the content of amylose accounts for 30% of starch. Therefore Sagittarius can be used as starch raw material for development and utilization. [0003] Resistant starch, also known as enzyme-resistant starch, cannot be digested and absorbed by...

Claims

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Application Information

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IPC IPC(8): A23L5/30A23L33/21A23L33/12C08B30/04
CPCA23L5/32A23L33/21A23L33/12C08B30/04A23V2002/00A23V2200/328A23V2200/332A23V2200/30A23V2250/5118A23V2250/1872A23V2250/1886
Inventor 任晓锋汤佳琳拉丝梁秋芳陈薪乡马海乐
Owner JIANGSU UNIV
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