The present invention provides a method for the extraction and isolation of soluble arabinoxylan products from cereal grain. Preferably, such soluble arabinoxylan product is any one of soluble arabinoxylan, arabinoxylan-oligosaccharides, xylose, arabinose, ferulic acid and mixtures thereof. Said method comprises partial debranning of whole cereal grains to obtain partially debranned cereal grains followed by roller milling of said partially debranned cereal grains to obtain cereal bran. The method further comprises the mashing of at least part of said cereal bran in water optionally involving the treatment of the mash with any one of an enzyme preparation, an acid, a base, a peroxide or combinations thereof, either simultaneously or sequentially, to solubilize and optionally depolymerize a fraction of the arabinoxylan comprised in said cereal bran. Preferably, said treatment is done with an enzyme preparation containing an endoxylanase. The method further comprises the separation from said mash of a solubilized fraction, which comprises at least part of the solubilized soluble arabinoxylan products.

A novel dry mill process for producing pure starch, which can be used as a feed stock for bio tech processes. Corn feedstock is sent through a particle size reduction device, such as a hammer mill, to produce corn flour. The corn flour is screened into a small particle portion (which mainly contains “free” starch from the floury endosperm) and a larger particle portion (which mainly comprises the horny endosperm, germ pericarp and tip cap). The small particle potion is sent to a liquefication and a saccharification process to produce high Be corn syrup. A mud phase (mixture of oil, germ, and any light solid) is centrifuged. The light phase is sent to precoat drum filtration to produce clean corn syrup. Further, a novel wet mill process to produce starch and alcohol is disclosed. A three-section paddle screen can be used to separate starch from grit and fiber.

A novel dry mill process for producing pure starch, which can be used as a feed stock for bio tech processes. Corn feedstock is sent through a particle size reduction device, such as a hammer mill, to produce corn flour. The corn flour is screened into a small particle portion (which mainly contains “free” starch from the floury endosperm) and a larger particle portion (which mainly comprises the horny endosperm, germ pericarp and tip cap). The small particle potion is sent to a liquefication and a saccharification process to produce high Be corn syrup. A mud phase (mixture of oil, germ, and any light solid) is centrifuged. The light phase is sent to precoat drum filtration to produce clean corn syrup. Further, a novel wet mill process to produce starch and alcohol is disclosed. A three-section paddle screen can be used to separate starch from grit and fiber.

There is provided esterified starch which can be produced without using a non-aqueous organic solvent and has water resistance and miscibility with another plastic, and a starch-containing plastic composition. The esterified starch is obtained such that a starch mixture containing starch and a polyhydric alcohol, which is subjected to a heat treatment, is esterified with a vinyl ester and carbonate. Since the starch in the starch mixture enters a state in which starch granules are disintegrated by the polyhydric alcohol, by heating the starch mixture containing starch and a polyhydric alcohol, it is possible to esterify the starch without using a non-aqueous organic solvent and to obtain esterified starch having a high ester substitution degree. According to the esterified starch of the present invention, it is possible to obtain a starch-containing plastic composition having high hydrophobicity, and excellent water resistance and miscibility with another plastic.

The present disclosure discloses a method for extracting a duckweed turion starch, and belongs to the technical field of agriculture and food. The extraction method of the present disclosure includes the following steps: conducting drying and rehydration on a duckweed turion to obtain a rehydrated turion, soaking the rehydrated turion in a solvent, and then conducting washing and filtration to obtain a decolorized duckweed turion; or conducting beating on a fresh duckweed turion, soaking the fresh duckweed turion in a solvent, and then conducting washing and filtration to obtain a decolorized duckweed turion slurry; and putting the decolorized duckweed turion or the decolorized duckweed turion slurry in a dispersion liquid for extraction at a rotation speed of 6,000-18,000 rpm at 25-50° C. for 5-60 min, and then conducting filtration, centrifugation, washing and drying to obtain the duckweed turion starch. The turion starch obtained by using the method of the present disclosure has a high purity and a high extraction rate. The purity reaches 93% or above with the highest purity of 96.54% or above. The extraction rate reaches 85% or above.

The present disclosure discloses a method for extracting a duckweed turion starch, and belongs to the technical field of agriculture and food. The extraction method of the present disclosure includes the following steps: conducting drying and rehydration on a duckweed turion to obtain a rehydrated turion, soaking the rehydrated turion in a solvent, and then conducting washing and filtration to obtain a decolorized duckweed turion; or conducting beating on a fresh duckweed turion, soaking the fresh duckweed turion in a solvent, and then conducting washing and filtration to obtain a decolorized duckweed turion slurry; and putting the decolorized duckweed turion or the decolorized duckweed turion slurry in a dispersion liquid for extraction at a rotation speed of 6,000-18,000 rpm at 25-50° C. for 5-60 min, and then conducting filtration, centrifugation, washing and drying to obtain the duckweed turion starch. The turion starch obtained by using the method of the present disclosure has a high purity and a high extraction rate. The purity reaches 93% or above with the highest purity of 96.54% or above. The extraction rate reaches 85% or above.

Crystalline starch nano-microparticle product, gels and procedures are disclosed, wherein the nano-microparticle product comprises between 60% and 70% crystalline nano-microparticles and between 40% and 30% modified starch grains, wherein at least 90% of the nano-microparticles have sizes less than 200 nm and more than 40% of said nano-microparticles are less than 100 nm. The nano-microparticles can be mixed with boiling water, giving rise to gels that are useful in coating food, making creams and other uses, including the controlled release of different compounds.

Crystalline starch nano-microparticle product, gels and procedures are disclosed, wherein the nano-microparticle product comprises between 60% and 70% crystalline nano-microparticles and between 40% and 30% modified starch grains, wherein at least 90% of the nano-microparticles have sizes less than 200 nm and more than 40% of said nano-microparticles are less than 100 nm. The nano-microparticles can be mixed with boiling water, giving rise to gels that are useful in coating food, making creams and other uses, including the controlled release of different compounds.

The embodiments of the present application provide a maize fiber processing system and a maize wet-milled starch processing system using same. The maize fiber processing system comprises a pressure curved screen group, a fiber washing sink group, an enzyme preparation adding device and an external enzyme reaction tank, wherein the external enzyme reaction tank is used for receiving screen overflow from a middle stage of pressure curved screen or fiber slurry in a middle stage of fiber washing sink and providing a place for enzyme reaction, thereby extending reaction time of enzyme participation. In addition, the reaction efficiency of the enzyme preparation can be further improved by means of controlling the fiber dry substance concentration in the external enzyme reaction tank.

The embodiments of the present application provide a maize fiber processing system and a maize wet-milled starch processing system using same. The maize fiber processing system comprises a pressure curved screen group, a fiber washing sink group, an enzyme preparation adding device and an external enzyme reaction tank, wherein the external enzyme reaction tank is used for receiving screen overflow from a middle stage of pressure curved screen or fiber slurry in a middle stage of fiber washing sink and providing a place for enzyme reaction, thereby extending reaction time of enzyme participation. In addition, the reaction efficiency of the enzyme preparation can be further improved by means of controlling the fiber dry substance concentration in the external enzyme reaction tank.