1786results about "Biochemical treatment with enzymes/microorganisms" patented technology

The present invention provides methods and compositions comprising at least one neutral metalloprotease enzyme that has improved storage stability. In some embodiments, the neutral metalloprotease finds use in cleaning and other applications. In some particularly preferred embodiments, the present invention provides methods and compositions comprising neutral metalloprotease(s) obtained from Bacillus sp. In some more particularly preferred embodiments, the neutral metalloprotease is obtained from B. amyloliquefaciens. In still further preferred embodiments, the neutral metalloprotease is a variant of the B. amyloliquefaciens neutral metalloprotease. In yet additional embodiments, the neutral metalloprotease is a homolog of the B. amyloliquefaciens neutral metalloprotease. The present invention finds particular use in applications including, but not limited to cleaning, bleaching and disinfecting.

Compositions comprising cellulase and at least one poly alpha-1,3-glucan ether compound having a degree of substitution with an organic group of about 0.05-3.0 are disclosed. Such compositions can be dry or aqueous, the latter of which can have a viscosity of at least about 10 cPs. The disclosed composition can be in the form of a personal care product, household product, or industrial product, for example. Also disclosed are a method for preparing an aqueous composition comprising cellulase and a poly alpha-1,3-glucan ether compound, and a method of treating a material such as fabric by contacting it with this aqueous composition.

The present invention is directed to materials containing an enzyme inhibitor, including treated fibers, nonwovens, functional particles and processes for making these materials. These materials are useful in reducing or delaying onset of odor generation from various waste materials including human and animal elimination products.

The present invention relates to the cloning and high level expression of novel cellulase proteins or derivatives thereof in the in a host cell. Further aspects of the present invention relate to transformants that express the novel cellulases, and expression vectors comprising the DNA gene fragments or variants thereof that code for the novel cellulases derived from Actinomycete using genetic engineering techniques. The present invention is also directed to novel cellulase compositions and methods of use therefore in industrial processes. In particular, the present invention is related to treating textiles with a novel cellulase derived from Actinomycete spp. The present invention also relates to the use of cellulase derived from Actinomycete spp. to enhance the digestibility of animal feed, in detergents, in the treatment of pulp and paper and in the production of starch and treatment of by-products thereof.

One aspect of the invention provides a three-dimensional scaffold including at least one layer of highly-aligned fibers. The at least one layer of highly-aligned fibers is curved in a direction substantially perpendicular to a general direction of the fibers. Another aspect of the invention provides a method for fabricating a three-dimensional scaffold. The method includes: electro spinning a plurality of fibers to produce at least one layer of highly-aligned fibers and forming the at least one layer of highly-aligned fibers into a three-dimensional scaffold without disturbing the alignment of the highly-aligned polymer fibers. A further aspect of the invention provides methods for using a three-dimensional scaffold to treat nerve or spinal cord injury.

The invention relates to a fabric production method, in particular to a method for producing a stretch knit warm fabric which is small in fiber damage, stable in elasticity, small in shrinkage degree and high in shape preservation property. The method comprises the steps of gray fabric knitting, gray fabric scutching, presetting, dyeing, water pressing and drying, fleecing, setting, lustring and shearing. During gray fabric knitting, ecotype fiber and single-component or multi-component blended yarn containing protein fiber or cellulosic fiber are used as surface yarn, DTY fine-denier polyester interlaced low-stretch long filament subjected to yarn steaming setting at 130 DEG C in a vacuum environment is used as bottom yarn, DTY polyester interlaced low-stretch yarn is used as middle connecting yarn, and 2.5 times drafting 20D spandex yarn is fed together with the surface yarn. In this way, the fabric is high in elasticity and shape preservation property. By reducing presetting temperature and machine speed, the degree of damage to spandex yarn is reduced to the minimum, and it is ensured that the elasticity of spandex yarn is stable.

The present invention relates to a novel laccase enzyme obtainable from the strains of genus Thielavia. The invention relates also to the nucleic acid sequence encoding the enzyme, a recombinant host into which the nucleic acid sequence has been introduced and a method for the production of the enzyme in a recombinant host. The enzyme of the invention is suitable for several applications, in particular for increasing the lightness of denim.

The present invention relates to a cleaning composition, preferably a granular detergent product, comprising a carboxyl-group containing polymer, which is useful in improving whiteness and/or anti-soil redeposition. Processes for making and methods of using the cleaning composition are also encompassed by the present invention.

The invention belongs to the technical field of wearable sensing, in particular to an electrochemical sensing fabric and a preparation method thereof. The electrochemical sensing fabric disclosed by the invention is woven by a fiber sensor, and has a silver/silver chloride fiber reference electrode woven therein; the fiber sensor comprises a glucose fiber sensor, a sodium ion fiber sensor, a potassium ion fiber sensor, and a pH fiber sensor. The electrochemical sensing fabric can monitor glucose, sodium ions, potassium ions, calcium ions and a pH value in sweat. The electrochemical sensing fabric is woven in a garment and connected with a wireless sensor to construct a smart sensing garment, which can transmit monitored sweat component information to a mobile terminal such as a smart phonein real time; and the electrochemical sensing fabric is an ideal platform for realizing real-time wearable monitoring and has a broad application prospect in the field of wearable electronics.

The present invention relates to xyloglucanases belonging to family 44 of glycosyl hydrolases and having a relative xyloglucanase activity of at least 30% between pH 5 and pH 8 are derived from the genus Paenibacillus, especially from a strain of Paenibacillus polymyxa or Paenibacillus sp. The xyloglucanases exhibit high performance in conventional detergent compositions.

The invention discloses an antibacterial and anti-felting wool fabric finishing method, and belongs to the technical field of spinning. The method includes the steps of firstly, adding hydrogen peroxide and sodium hydroxide to preprocess wool fabric so that scale cells and cortex cells of surfaces of wool fibers can be broken; secondly, conducting enzyme treatment, wherein keratinase and alkaline protease are added for concerted reaction enzymolysis, and after keratin enzymolysis is conducted on the outer layers of scales through keratinase, enzymolysis is conducted on cystine of keratin protein of parts such as inner stratum corneum and cortical layers of wool through alkaline protease; thirdly, conducting chemical finishing, wherein twice soaking and twice rolling are conducted on the wool fabric through a glycerol citric acid ester solution. By means of the method, the effect of increasing wool anti-felting and antibacterial capacity is remarkable, reaction time is short, subsequent processing is simple, the influences on breaking force and whiteness of the processed wool fabric are small, dyeing performance is greatly improved, the directional friction effect is greatly reduced, high economic benefits are achieved, and industrial popularization is facilitated.

The invention discloses a dyeing and finishing process for a polyester blended fiber fabric. The process comprises the following steps of 1, pretreatment, wherein the polyester blended fiber fabric is sequentially subjected to scouring, bleaching and enzyme washing; 2, mercerizing and sizing, wherein the fabric is subjected to padding of alkali liquor under the room temperature for pre-sizing; 3, dyeing, wherein the fabric is soaked into dye liquor formed by disperse dyes, dyeing is performed under the temperature of 30-40 DEG C, temperature is increased to 90-110 DEG C at the heating rate being 0.8-1 DEG C/min, washing is performed through warm water, infrared ray pre-heating is performed, and then hot-blast air drying is performed; padding is performed again under the room temperature to reduce the suspended solid dye liquor formed by dyes, a reduction solution is subjected to padding, steam reduction and oxidation are performed, washing is performed through warm water, soaping is performed, and then washing and drying are performed; 4, after-treatment, wherein soft and flame-proof treatment is performed in sequence. According to the dyeing and finishing process for the polyester blended fiber fabric, the touch feeling, elasticity and other properties of the fabric are improved remarkably, dyeing is uniform, the color fastness is high, and the color is full.

The invention discloses blended yarn with hemp and cotton multifunctional fiber reinforced by graphene fiber. The blended yarn is prepared from the following steps that 1, hemp fiber is placed in a pectinase solution to be soaked at normal temperature, continues to be soaked in a chitosan aqueous solution, and then is dehydrated and dried; 2, the hemp fiber, bamboo fiber, wool fiber and cotton fiber are placed in acetone to be soaked while ultrasonically oscillated and are washed, dehydrated and dried to prepare the hemp and cotton multifunctional fiber; 3, the hemp and cotton multifunctional fiber and graphene fiber are mixed uniformly and entwisted into the blended yarn. As the graphene fiber is added for blending, strength and tenacity of the hemp and cotton multifunctional fiber blended yarn are improved, and the specific resistance of the blended yarn is about 10-103 omega*m; after mild biological enzyme treatment, the hemp fiber has the degumming effect and avoid retting degumming caused by chemicals, natural phenolic substances and derivatives thereof contained in the hemp fiber are well reserved, and the effective and natural antibacterial function is achieved.

The invention relates to a production process for a cotton-linen knitted belt. According to the invention, multiple steps of the production process for the cotton-linen knitted belt are improved from multiple aspects, so the produced cotton-linen knitted belt is ensured to be good in elasticity and wear resistance, stable in dimension, small in washing shrinkage, straight, not prone to creasing, easy to wash and fast to dry under dry and wet conditions; the linen component of the knitted belt is capable of preventing ultraviolet rays and suppressing and resisting bacteria; the production process for the cotton-linen knitted belt overcomes the inherent disadvantage of stiff and itchy handle feel of natural fibrilia fabrics; and the prepared cotton-linen knitted belt has a special concave-convex structure, excellent low irritability, moisture permeability and crease resistance, and good indexes like moisture absorption performance and permeability, is knitted by fully natural fiber, is a low-carbon environment-friendly belt, and accords with the current fashionable trend of international textiles and garments.

The invention discloses a flax thick yarn supercritical CO2 biological enzyme scouring device and a scouring method thereof. Flax thick yarn is placed in supercritical CO2 fluid where a biological enzyme scouring agent is dissolved, flax fibers are swollen for 10-30 min at 30-40 DEG C and 8-15 MPa; the flax thick yarn is scoured for 30-60 min under dynamic conditions of a flow velocity of supercritical CO2 at 10-50 g/min at 40-60 DEG C and 15-25 MPa; the flax thick yarn is processed through a scouring-separation combined process for 10-30 min at 40-60 DEG C and 15-25 MPa; after the scouring, the weight loss rate of the flax thick yarn is 6-12%, the residual gum rate is 7-15%, the single fiber breaking strength is 6-13 cN/dtex, and the elongation at break is 4.5-8.5%. The whole scouring process is free of pollution and has zero release, requirements of commercialized production are met, and the modern life idea of fashionable bast fiber spinning and green bast fiber spinning is embodied.

The invention relates to the technical field of textile fabric manufacturing and discloses a sun-proof antibacterial textile fabric. The fabric is formed by interweaving warp and weft in a mutually perpendicular mode, the warp is sun-proof antibacterial fiber blended yarn, the weft is composed of flax fibers and polyvinyl alcohol fibers in the weight ratio of 1:(1-2), the diameter of the warp is 46.5-51.5 micrometers, the diameter of the weft is 43-44.5 micrometers, the density of the warp is 76-79 pieces per centimeter, and the density of the weft is 55-58 pieces per centimeter. The fabric has the advantages that the polyvinyl-acetal-based sun-proof antibacterial fabric is high in strength, good in toughness and excellent in moisture absorption and has the sun-proof, anti-ultraviolet and antibacterial functions, the flax fibers and the polyvinyl alcohol fibers are added so that air permeability and the comfort of the fabric can be enhanced, and the fabric is more suitable for being used in hot environments in summer.

The invention discloses a higher-substrate-specificity keratinase mutant and a preparation method thereof, belonging to the field of enzyme engineering. Analysis is performed to obtain the optimal mutant site to perform site-directed mutagenesis, thereby obtaining the excellent mutant with higher keratinase enzyme activity and substrate specificity. The keratinase and mutant thereof can effectively hydrolyze feather, wool and other non-water-soluble keratin substrates, and can be used for leather textile industry and feed industry.