Maca dietary fiber as well as preparation method and application thereof

Abstract

The invention relates to a maca dietary fiber as well as a preparation method and application thereof. The maca dietary fiber is prepared by processing maca root or maca residue as a raw material according to an enzymatic method or an acid-alkali method. The prepared maca dietary fiber is high in dietary fiber content, swelling rate, water holdup rate, oil holdup rate, glucose adsorption rate and glucose block rate, and can be used as a food additive, a functional health food or the like; meanwhile, the preparation method is simple and convenient in technique, and suitable for industrial production; waste recycling is realized, and the application value is important.

Description

technical field

[0001] The invention belongs to the field of food processing, and in particular relates to a dietary fiber and its preparation method and application, in particular to a high-activity maca dietary fiber and its preparation method and application. Background technique

[0002] Dietary fiber refers to the naturally occurring, extracted or synthetic carbohydrate polymers in plants, whose degree of polymerization is ≥ 3, cannot be digested and absorbed by the human small intestine, and has health significance for the human body, including cellulose, hemicellulose, Pectin, inulin and other dietary fiber monomer components are widely found in fruits, vegetables, grains and legumes. The intake of dietary fiber is beneficial to human health. It can lower cholesterol, suppress blood sugar levels, improve intestinal flora, and prevent diseases such as obesity, diabetes, intestinal cancer, cardiovascular disease, constipation, and asthma. At present, many countries hav...

Examples

Embodiment 1

[0061] (1) Raw material pulverization: pulverize maca root and pass through a 40-mesh sieve.

[0062] (2) Preparation: Weigh 100g of maca powder and add it to 500mL of water, add 200U / g of heat-stable α-amylase in a water bath at 90°C for 60min, cool to 30°C and then add 10U / g of For neutral protease, bathe in water at 30°C for 60 minutes, then add amyloglucosidase in an amount of 100 U / g, bathe in water at 30°C for 60 minutes.

[0063] (3) Separation and purification: add 4 volumes of 95% ethanol to the sample prepared in step (2) to precipitate overnight at room temperature, then wash with ethanol and acetone to obtain maca dietary fiber.

[0064] (4) Freeze drying.

[0065] Dietary fiber yield is 39.2% in the present embodiment.

Embodiment 2

[0067] (1) Crushing of raw materials: pulverizing the maca residue after water extraction and drying.

[0068] (2) Preparation: Weigh 100g of maca powder and add it to 5L of water, add 1000U / g of thermostable α-amylase in a water bath at 105°C for 20min, cool to 70°C and then add 100U / g of For neutral protease, bathe in water at 70°C for 20 minutes, then add amyloglucosidase in an amount of 600 U / g, bathe in water at 70°C for 60 minutes.

[0069] (3) Separation and purification: add 4 volumes of 95% ethanol to the sample prepared in step (2) to precipitate overnight at room temperature, then wash with ethanol and acetone to obtain maca dietary fiber.

[0070] (4) Air blast drying.

[0071] Dietary fiber yield is 65.9% in the present embodiment.

Embodiment 3

[0073] (1) Raw material pulverization: maca residue after 50% ethanol extraction is pulverized.

[0074](2) Preparation: Weigh 100g of maca powder and add it to 1L of water, add 500U / g of heat-stable α-amylase in a water bath at 95°C for 30min, cool to 60°C and then add 40U / g of For neutral protease, bathe in water at 60°C for 30 minutes, then add amyloglucosidase in an amount of 250 U / g, bathe in water at 60°C for 30 minutes.

[0075] (3) Separation and purification: add 4 volumes of 95% ethanol to the sample prepared in step (2) to precipitate overnight at room temperature, then wash with ethanol and acetone to obtain maca dietary fiber.

[0076] (4) Air-dry at room temperature.

[0077] Dietary fiber yield is 45.5% in the present embodiment.

technical field

[0001] The invention belongs to the field of food processing, and in particular relates to a dietary fiber and its preparation method and application, in particular to a high-activity maca dietary fiber and its preparation method and application. Background technique

[0002] Dietary fiber refers to the naturally occurring, extracted or synthetic carbohydrate polymers in plants, whose degree of polymerization is ≥ 3, cannot be digested and absorbed by the human small intestine, and has health significance for the human body, including cellulose, hemicellulose, Pectin, inulin and other dietary fiber monomer components are widely found in fruits, vegetables, grains and legumes. The intake of dietary fiber is beneficial to human health. It can lower cholesterol, suppress blood sugar levels, improve intestinal flora, and prevent diseases such as obesity, diabetes, intestinal cancer, cardiovascular disease, constipation, and asthma. At present, many countries hav...

Examples

Embodiment 1

[0061] (1) Raw material pulverization: pulverize maca root and pass through a 40-mesh sieve.

[0062] (2) Preparation: Weigh 100g of maca powder and add it to 500mL of water, add 200U / g of heat-stable α-amylase in a water bath at 90°C for 60min, cool to 30°C and then add 10U / g of For neutral protease, bathe in water at 30°C for 60 minutes, then add amyloglucosidase in an amount of 100 U / g, bathe in water at 30°C for 60 minutes.

[0063] (3) Separation and purification: add 4 volumes of 95% ethanol to the sample prepared in step (2) to precipitate overnight at room temperature, then wash with ethanol and acetone to obtain maca dietary fiber.

[0064] (4) Freeze drying.

[0065] Dietary fiber yield is 39.2% in the present embodiment.

Embodiment 2

[0067] (1) Crushing of raw materials: pulverizing the maca residue after water extraction and drying.

[0068] (2) Preparation: Weigh 100g of maca powder and add it to 5L of water, add 1000U / g of thermostable α-amylase in a water bath at 105°C for 20min, cool to 70°C and then add 100U / g of For neutral protease, bathe in water at 70°C for 20 minutes, then add amyloglucosidase in an amount of 600 U / g, bathe in water at 70°C for 60 minutes.

[0069] (3) Separation and purification: add 4 volumes of 95% ethanol to the sample prepared in step (2) to precipitate overnight at room temperature, then wash with ethanol and acetone to obtain maca dietary fiber.

[0070] (4) Air blast drying.

[0071] Dietary fiber yield is 65.9% in the present embodiment.

Embodiment 3

[0073] (1) Raw material pulverization: maca residue after 50% ethanol extraction is pulverized.

[0074](2) Preparation: Weigh 100g of maca powder and add it to 1L of water, add 500U / g of heat-stable α-amylase in a water bath at 95°C for 30min, cool to 60°C and then add 40U / g of For neutral protease, bathe in water at 60°C for 30 minutes, then add amyloglucosidase in an amount of 250 U / g, bathe in water at 60°C for 30 minutes.

[0075] (3) Separation and purification: add 4 volumes of 95% ethanol to the sample prepared in step (2) to precipitate overnight at room temperature, then wash with ethanol and acetone to obtain maca dietary fiber.

[0076] (4) Air-dry at room temperature.

[0077] Dietary fiber yield is 45.5% in the present embodiment.

Images