Method for culturing pleurotus geesteranus uniformly rich in selenium by using mixed selenium source

Abstract

The invention discloses a method for culturing pleurotus geesteranus uniformly rich in selenium by using a mixed selenium source. The method is characterized by comprising steps of: mixing selenium-enriched culture material additive in an amount which is 1 to 10 percent of the total weight of a dry culture material in the dry culture material, and culturing according to the common culture method to obtain the pleurotus geesteranus uniformly rich in selenium, wherein the selenium-enriched culture material additive has the total selenium content of 5 to 300mg / kg; the particles with the particlesize of 0.005 to 5.0mm in the selenium-enriched culture material additive are in multi-particle-size regional distribution, and particles with the particle size of 1.0 to 5.0mm at least account for 10 percent of the total weight of the additive; particles with the particle size of 0.005 to 0.1mm at least account for 40 percent of the total weight of the additive; the mixed selenium source is a mixture of an organic selenium source and an inorganic selenium source; the inorganic selenium source is one or a combination of two of sodium selenate and sodium selenite; and the organic selenium source is selenious yeast. The pleurotus geesteranus prepared by the method has high utilization rate and stable selenium content in different batches; in addition, by the method, selenium pollution is avoided, and the method is easy to operate and easy to promote.

Description

technical field

[0001] The invention relates to edible fungi, in particular to a method for enhancing the selenium nutrition of pear mushrooms by using a mixed selenium source, and belongs to the technical field of biotransformation of selenium resources. Background technique

[0002] Pleurotus geesteranus belongs to the Phylum Fungi, Basidiomycetes, Agaricaceae, Pleurotaceae Pleurotus in taxonomy. Xiuzhen mushroom is crisp and tender in texture, sweet and refreshing, has a pleasant crab fragrance, is rich in nutrition, has high edible and medicinal value, and is an excellent strain in Pleurotus spp. It is a high-protein, low-fat nutritious food. Its protein content is close to that of meat, 3-6 times higher than that of ordinary vegetables, and its texture is tender and low in fiber content. Threonine, lysine, and homopic acid cannot be produced, and are usually lacking in food. This kind of edible fungus gets its name because of its beauty and preciousness. Its small sha...

Examples

Embodiment 1

[0072] Example 1 Selenium-enriched Cultivation Example of Pleurotus chinensis

[0073] (1) Preparation of selenium-enriched mushroom additive:

[0074] ①Screen, dry and crush corncobs, a kind of natural crop leftovers, to a particle size of 0.005-0.1mm, and design the formula of cultivation material additives required for cultivating selenium-enriched pear mushrooms.

[0075] The additive formula is as follows:

[0076] 100 parts of corncob flour;

[0077] Sodium selenate (or sodium selenite) 0.0006 (or 0.00055) part;

[0078] Selenium yeast 0.225 parts.

[0079] ② Grind the above-mentioned sodium selenate (or sodium selenite) and selenium yeast to a powder with a particle size of 0.005-0.1mm, and fully stir and mix with corncob powder to obtain a particle size below 0.1mm and a selenium content of 5mg / kg primary mix.

[0080] ③ Process and granulate the above mixture to make it into particles with different particle sizes, and the particle sizes are controlled within the...

Embodiment 2

[0086] Example 2 Selenium-enriched Cultivation Example of Pleurotus chinensis

[0087] (1) Preparation of selenium-enriched mushroom additive:

[0088] ①Screen, dry and crush corncobs, a kind of natural crop leftovers, to a particle size of 0.005-0.1mm, and design the formula of cultivation material additives required for cultivating selenium-enriched pear mushrooms.

[0089] The additive formula is as follows:

[0090] 100 parts of corncob flour;

[0091] 0.012 parts of sodium selenate;

[0092] Selenium yeast 2.25 parts.

[0093] ② Grind the above-mentioned sodium selenate and sodium selenite to a powder with a particle size of 0.005-0.1mm, and mix them well with corncob powder to obtain a primary Mixture.

[0094] ③ Process and granulate the above mixture to make it into particles with different particle sizes, and the particle sizes are controlled within the ranges of 0.005-0.1mm, 0.1-1.0mm, and 1.0-5.0mm respectively.

[0095] ④ Mix the particles of the above three ...

Embodiment 3

[0100] Example 3 Selenium-enriched Cultivation Example of Pleurotus chinensis

[0101] (1) Preparation of selenium-enriched mushroom additive:

[0102] ①Screen, dry and crush corncobs, a kind of natural crop leftovers, to a particle size of 0.005-0.1mm, and design the formula of cultivation material additives required for cultivating selenium-enriched pear mushrooms.

[0103] The additive formula is as follows:

[0104] 100 parts of corncob flour;

[0105] 0.011 parts of sodium selenite;

[0106] Selenium yeast 4.5 parts.

[0107] ② Grind the above-mentioned sodium selenate and sodium selenite to a powder with a particle size of 0.005-0.1mm, and mix them well with corncob powder to obtain a primary Mixture.

[0108] ③ Process and granulate the above mixture to make it into particles with different particle sizes, and the particle sizes are controlled within the ranges of 0.005-0.1mm, 0.1-1.0mm, and 1.0-5.0mm respectively.

[0109] ④ Mix the particles of the above three par...

technical field

[0001] The invention relates to edible fungi, in particular to a method for enhancing the selenium nutrition of pear mushrooms by using a mixed selenium source, and belongs to the technical field of biotransformation of selenium resources. Background technique

[0002] Pleurotus geesteranus belongs to the Phylum Fungi, Basidiomycetes, Agaricaceae, Pleurotaceae Pleurotus in taxonomy. Xiuzhen mushroom is crisp and tender in texture, sweet and refreshing, has a pleasant crab fragrance, is rich in nutrition, has high edible and medicinal value, and is an excellent strain in Pleurotus spp. It is a high-protein, low-fat nutritious food. Its protein content is close to that of meat, 3-6 times higher than that of ordinary vegetables, and its texture is tender and low in fiber content. Threonine, lysine, and homopic acid cannot be produced, and are usually lacking in food. This kind of edible fungus gets its name because of its beauty and preciousness. Its small sha...

Examples

Embodiment 1

[0072] Example 1 Selenium-enriched Cultivation Example of Pleurotus chinensis

[0073] (1) Preparation of selenium-enriched mushroom additive:

[0074] ①Screen, dry and crush corncobs, a kind of natural crop leftovers, to a particle size of 0.005-0.1mm, and design the formula of cultivation material additives required for cultivating selenium-enriched pear mushrooms.

[0075] The additive formula is as follows:

[0076] 100 parts of corncob flour;

[0077] Sodium selenate (or sodium selenite) 0.0006 (or 0.00055) part;

[0078] Selenium yeast 0.225 parts.

[0079] ② Grind the above-mentioned sodium selenate (or sodium selenite) and selenium yeast to a powder with a particle size of 0.005-0.1mm, and fully stir and mix with corncob powder to obtain a particle size below 0.1mm and a selenium content of 5mg / kg primary mix.

[0080] ③ Process and granulate the above mixture to make it into particles with different particle sizes, and the particle sizes are controlled within the...

Embodiment 2

[0086] Example 2 Selenium-enriched Cultivation Example of Pleurotus chinensis

[0087] (1) Preparation of selenium-enriched mushroom additive:

[0088] ①Screen, dry and crush corncobs, a kind of natural crop leftovers, to a particle size of 0.005-0.1mm, and design the formula of cultivation material additives required for cultivating selenium-enriched pear mushrooms.

[0089] The additive formula is as follows:

[0090] 100 parts of corncob flour;

[0091] 0.012 parts of sodium selenate;

[0092] Selenium yeast 2.25 parts.

[0093] ② Grind the above-mentioned sodium selenate and sodium selenite to a powder with a particle size of 0.005-0.1mm, and mix them well with corncob powder to obtain a primary Mixture.

[0094] ③ Process and granulate the above mixture to make it into particles with different particle sizes, and the particle sizes are controlled within the ranges of 0.005-0.1mm, 0.1-1.0mm, and 1.0-5.0mm respectively.

[0095] ④ Mix the particles of the above three ...

Embodiment 3

[0100] Example 3 Selenium-enriched Cultivation Example of Pleurotus chinensis

[0101] (1) Preparation of selenium-enriched mushroom additive:

[0102] ①Screen, dry and crush corncobs, a kind of natural crop leftovers, to a particle size of 0.005-0.1mm, and design the formula of cultivation material additives required for cultivating selenium-enriched pear mushrooms.

[0103] The additive formula is as follows:

[0104] 100 parts of corncob flour;

[0105] 0.011 parts of sodium selenite;

[0106] Selenium yeast 4.5 parts.

[0107] ② Grind the above-mentioned sodium selenate and sodium selenite to a powder with a particle size of 0.005-0.1mm, and mix them well with corncob powder to obtain a primary Mixture.

[0108] ③ Process and granulate the above mixture to make it into particles with different particle sizes, and the particle sizes are controlled within the ranges of 0.005-0.1mm, 0.1-1.0mm, and 1.0-5.0mm respectively.

[0109] ④ Mix the particles of the above three par...