Method for preparing dietary fiber in sweet potato slag

Abstract

The invention discloses a method for preparing dietary fiber in sweet potato slag, mainly aims at the problems that most sweet potato slag is discarded as a waste to cause serious environmental pollution, new dietary fiber resources are found, and the like, and provides the method for preparing the dietary fiber in the sweet potato slag. The method comprises the following steps of sweet potato slag-washing with water-adjusting pulp, grinding with a colloid mill, screening (primary screening-secondary screening)-sweet potato dietary fiber crude product-seasoning-bottling-sterilizing-cooling-inoculating-culturing fermentation-washing with water-drying-finished sweet potato dietary fiber products. The method has the advantages of simple operation, mild reaction conditions, no pollution, and the like, can increase the content of soluble dietary fiber in the dietary fiber product, and is low in production cost, and easy in realization of industrial production.

Description

technical field

[0001] The invention relates to a method for preparing dietary fiber from sweet potato dregs, in particular to a method for preparing dietary fiber from sweet potato dregs by a combination method of molecular sieve and microbial fermentation, and belongs to the field of food processing. Background technique

[0002] Dietary fiber is a new type of functional food base material. Although it has no nutritional value, it can prevent and treat many diseases. It is called the "seventh largest nutrient" after starch, protein, fat, vitamins, minerals and water. ", known as the "intestinal scavenger" in the world.

[0003] Dietary fiber can be divided into soluble dietary fiber and insoluble dietary fiber according to solubility. The two have different physiological functions in the human body: soluble dietary fiber can prevent gallstones, eliminate harmful metal ions in the body, prevent diabetes, lower serum and cholesterol, prevent high blood pressure and heart di...

Examples

Embodiment 1

[0036] A method for preparing dietary fiber in sweet potato dregs is achieved through the following specific steps:

[0037] a. Washing

[0038] Select the sweet potato residue after starch extraction, and rinse the sweet potato residue with tap water to remove a small amount of starch;

[0039] b. Mixing and crushing

[0040] Drain the washed sweet potato slag, mix it with water at a mass ratio of 1:25, stir for 2 minutes to make the material liquid uniform, and crush the sweet potato slag after mixing for 8 minutes in a colloid mill; adding water to adjust the slurry is beneficial to the follow-up Small particles of starch are removed from the fibrous structure during sieving;

[0041] c. Sieving

[0042] Two standard sieves of 80 mesh and 400 mesh are fixed on the shaker and sieved by reciprocating vibration. The crushed sweet potato residue is first sieved by 80 mesh, and then passed by the secondary sieve of 400 mesh. The sieved material between the two standard sieves...

Embodiment 2

[0060] A method for preparing dietary fiber in sweet potato dregs is achieved through the following specific steps:

[0061] a. Washing

[0062] With step a in embodiment 1;

[0063] b. Mixing and crushing

[0064] Drain the washed sweet potato dregs, mix with water at a mass ratio of 1:25, stir for 2 minutes to make the feed liquid uniform, and preliminarily pulverize the sweet potato dregs after mixing for 10 minutes in a colloid mill;

[0065] c. Sieving

[0066] With step c in embodiment 1;

[0067] d. Seasoning

[0068] With step d in embodiment 1;

[0069] e. Sterilization

[0070] With step e in embodiment 1;

[0071] f, the preparation of production starter

[0072] In order to enable Streptococcus thermophilus and Lactobacillus bulgaricus to grow well in the sweet potato dietary fiber crude product seasoning paste, they must be domesticated. Streptococcus thermophilus and Lactobacillus bulgaricus form 2 mL of mixed strains in a ratio of 1:1, inoculate in 10 m...

Embodiment 3

[0084] A method for preparing dietary fiber in sweet potato dregs is achieved through the following specific steps:

[0085] a. Washing

[0086] With step a in embodiment 1;

[0087] b. Mixing and crushing

[0088] Drain the washed sweet potato dregs, mix with water at a mass ratio of 1:25, stir for 2 minutes to make the feed liquid uniform, and preliminarily pulverize the sweet potato dregs after mixing for 9 minutes in a colloid mill;

[0089] c. Sieving

[0090] With step c in embodiment 1;

[0091] d. Seasoning

[0092] With step d in embodiment 1;

[0093] e. Sterilization

[0094] With step e in embodiment 1;

[0095] f, the preparation of production starter

[0096] In order to enable Streptococcus thermophilus and Lactobacillus bulgaricus to grow well in the sweet potato dietary fiber crude product seasoning paste, they must be domesticated. Streptococcus thermophilus and Lactobacillus bulgaricus form 1.5mL of mixed strains according to the ratio of the number...

technical field

[0001] The invention relates to a method for preparing dietary fiber from sweet potato dregs, in particular to a method for preparing dietary fiber from sweet potato dregs by a combination method of molecular sieve and microbial fermentation, and belongs to the field of food processing. Background technique

[0002] Dietary fiber is a new type of functional food base material. Although it has no nutritional value, it can prevent and treat many diseases. It is called the "seventh largest nutrient" after starch, protein, fat, vitamins, minerals and water. ", known as the "intestinal scavenger" in the world.

[0003] Dietary fiber can be divided into soluble dietary fiber and insoluble dietary fiber according to solubility. The two have different physiological functions in the human body: soluble dietary fiber can prevent gallstones, eliminate harmful metal ions in the body, prevent diabetes, lower serum and cholesterol, prevent high blood pressure and heart di...

Examples

Embodiment 1

[0036] A method for preparing dietary fiber in sweet potato dregs is achieved through the following specific steps:

[0037] a. Washing

[0038] Select the sweet potato residue after starch extraction, and rinse the sweet potato residue with tap water to remove a small amount of starch;

[0039] b. Mixing and crushing

[0040] Drain the washed sweet potato slag, mix it with water at a mass ratio of 1:25, stir for 2 minutes to make the material liquid uniform, and crush the sweet potato slag after mixing for 8 minutes in a colloid mill; adding water to adjust the slurry is beneficial to the follow-up Small particles of starch are removed from the fibrous structure during sieving;

[0041] c. Sieving

[0042] Two standard sieves of 80 mesh and 400 mesh are fixed on the shaker and sieved by reciprocating vibration. The crushed sweet potato residue is first sieved by 80 mesh, and then passed by the secondary sieve of 400 mesh. The sieved material between the two standard sieves...

Embodiment 2

[0060] A method for preparing dietary fiber in sweet potato dregs is achieved through the following specific steps:

[0061] a. Washing

[0062] With step a in embodiment 1;

[0063] b. Mixing and crushing

[0064] Drain the washed sweet potato dregs, mix with water at a mass ratio of 1:25, stir for 2 minutes to make the feed liquid uniform, and preliminarily pulverize the sweet potato dregs after mixing for 10 minutes in a colloid mill;

[0065] c. Sieving

[0066] With step c in embodiment 1;

[0067] d. Seasoning

[0068] With step d in embodiment 1;

[0069] e. Sterilization

[0070] With step e in embodiment 1;

[0071] f, the preparation of production starter

[0072] In order to enable Streptococcus thermophilus and Lactobacillus bulgaricus to grow well in the sweet potato dietary fiber crude product seasoning paste, they must be domesticated. Streptococcus thermophilus and Lactobacillus bulgaricus form 2 mL of mixed strains in a ratio of 1:1, inoculate in 10 m...

Embodiment 3

[0084] A method for preparing dietary fiber in sweet potato dregs is achieved through the following specific steps:

[0085] a. Washing

[0086] With step a in embodiment 1;

[0087] b. Mixing and crushing

[0088] Drain the washed sweet potato dregs, mix with water at a mass ratio of 1:25, stir for 2 minutes to make the feed liquid uniform, and preliminarily pulverize the sweet potato dregs after mixing for 9 minutes in a colloid mill;

[0089] c. Sieving

[0090] With step c in embodiment 1;

[0091] d. Seasoning

[0092] With step d in embodiment 1;

[0093] e. Sterilization

[0094] With step e in embodiment 1;

[0095] f, the preparation of production starter

[0096] In order to enable Streptococcus thermophilus and Lactobacillus bulgaricus to grow well in the sweet potato dietary fiber crude product seasoning paste, they must be domesticated. Streptococcus thermophilus and Lactobacillus bulgaricus form 1.5mL of mixed strains according to the ratio of the number...