75 results about "Myofibril" patented technology

The invention discloses a processing method of seasoned instant sea cucumber, comprising the steps of the decontamination of raw sea cucumber, pressure boiling, low temperature fermentation, cutting, seasoning, vacuum packing, super high pressure sterilization, etc. The myofibril of the sea cucumber tissue becomes thinner after the process of fermented preparation, the inter-place between the fiber is large, organization structure is even, the volume of the sea cucumber is large, tenderness is improved and water capacity is enhanced, being conducive to the absorption of nutritional components; the sea cucumber tastes good after being seasoned by two liquid condiment; the super high pressure sterilization comparatively maintains the original favor, shape and nutrition of the instant sea cucumber product and the shelf life is greatly prolonged. The instant sea cucumber processed and produced by the method has no ocean fishy smell, delicious with good taste, proper hardness and softness, easy to carry and instant, basically maintaining the original nutritional components of the sea cucumber. The product can be preserved for a long time with freshness, nutrition, convenience and safety and overcomes the shortages of the coarse texture and the poor taste of the sea cucumber processed by the current technology.

A meat or fish composition which retains moisture during cooking is provided. A concentrated aqueous acidic protein solution derived from animal muscle tissue is added to the meat or fish prior to cooking. The concentrated aqueous acidic protein solution comprises myofibrillar proteins and sarcoplasmic proteins substantially free of myofibrils and sarcomeres.

A peptide composition derived from a protein composition when added to uncooked food effects moisture retention during cooking of the food. The peptide composition is derived from a dry protein mixture or an aqueous acidic protein solution which, in turn, is derived from animal muscle tissue. The peptide composition is added to uncooked poultry, meat or fish prior to cooking. The dry protein mixture and aqueous acidic protein solution comprise myofibrillar proteins and sarcoplasmic proteins substantially free of myofibrils and sarcomeres.

The present invention provides one kind of quality modifier for dried aquatic product and its composition and usage. The quality modifier consists of white spirit, antioxidant, phosphate, gluconic acid-delta-lactone, ascorbic acid and mycose, and may also have enzyme, such as glucose oxidase, added to further raise antioxidant effect. The quality modifier may be used to prevent oxidation, myofibril contraction and microbe propagation during drying aquatic product, eliminate fish smell and raise rehydration property. When the quality modifier is used, aquatic product and the quality modifier in the weight ratio of 2-15 to 1 are set in a basin, and the aquatic product is soaked for 30-60 min before being dried at 50 deg.c to obtain dried aquatic product.

The present invention discloses a method to extract myofibril protein from chicken, aiming to provide a method to extract myofibril protein with high purity, simplicity and low cost. The procedures are as follows: chicken under room temperature is cut into pieces, added with a low-ionic-strength extract with the pH of 6.0-7.0 to dissolve the dissolvable under the condition of low ionic acid strength, the solution undergoes even centrifuge to obtain a deposit containing myofibril protein, which is added with a high-ionic-strength extract with the pH of 6.0-7.0, the solution undergoes even centrifuge, and the separated myofibril protein deposit undergoes cycles of extraction with the high-ionic-strength extract, each of which is followed by centrifuges to eliminate the foreign proteins and the other impurities from the chicken, the deposit obtained from centrifuged suspension is the myofibril protein, which is added with the high-ionic-strength extract to prepare a solution, which is dialyzed under room temperature, frozen and dried to obtain the intended product of myofibril protein.

The present invention discloses fast identifying method of freshly frozen fish and defrozen fish in food identifying range. Based on the principle that the freezing of fish will cause the concentration change of intracellular fluid and extracellular fluid of muscle fibril, the transfer of intracellular and extracellular water, the change in cell shape and change in conducting characteristic of muscle medium, the conducting characteristic of fish is detected with an impedance measuring instrument at the conditions of 1000-16000 Hz frequency and voltage 3-9 V, the defrozen fish has Q value lower than 10 % and the freshly frozen fish has Q value higher than 20 %. The present invention makes it possible to detect freshly frozen fish and defrozen fish within 2 min without damage to fish, and the present invention has identification accuracy over 95 % and low cost.

The invention relates to a method for regulating the adsorption capacity of sea-fish myofibrillar protein to a flavor compound. The method mainly comprises the steps that the myofibrillar protein anda Tris-HCl buffer solution react under magnetic stirring to obtain a myofibrillar protein solution, sodium chloride and transglutaminase are added into the protein solution and fully stirred to be uniform, after a reaction is carried out for 1.5 hours at the temperature of 40 DEG C, cooking is conducted for 30 minutes in a water bath at the temperature of 75 DEG C, cooling and standing are conducted for 24 hours at the temperature of 4 DEG C, and then myofibrillar protein gel is obtained; through the cooperation of ultrahigh pressure treatment, the structure of the myofibrillar protein is further improved, and the adsorbing effect of the myofibrillar protein on the flavor compound is changed. By using the method, the adsorption capacity of the myofibrillar protein to the flavor compound can be effectively improved, the method plays an important role in improving the flavor of a surimi product, and the method is high in commercial value.

The invention discloses a glycosylation method for improving PSE chicken breast myofibrillar protein gel quality. The method includes the steps: (1) raw material treatment; (2) myofibrillar protein extraction; (3) glycosylation treatment; (4) sugar removing treatment; (5) gel preparation to obtain protein gel. PSE chicken breast is treated by the non-enzymatic wet glycosylation method, treatment conditions are mild, uniform and harmless, PSE chicken breast myofibrillar proteins can be modified in a covalent binding mode according to a glycosylation technology, the structures and processing characteristics of the proteins are changed, and the gel quality and economic benefits are improved by improving the water-retaining property and the gel hardness of the chicken breast myofibrillar protein gel.

The invention relates to a production method improving the boiling fastness of artificial crab meat. Frozen minced fillet is used as a main raw material, and auxiliary materials such as edible salt and the like are added. In the method, the nature of salt soluble protein-myofibrillar protein in fish muscle is adjusted, so that under the action of the edible salt, thick filaments and thin filaments of myofibril of the salt soluble protein are dissolved properly; myoglobulin and actin absorb proper water and are combined to form colloidal sol of actomyosin; the colloidal sol loses the plasticity by the change of the temperature to form gel with elasticity and tenacity; and the gel becomes a heat-resistant and stable gel system and meets the requirement of improving the boiling fastness. Compared with the boiling fastness of the artificial crab meat produced by the traditional method, the boiling fastness of the artificial crab meat of the invention increases more than 110 percent through the improvements of the prescription and the technology. The artificial crab meat is an instant foodstuff which has the fresh taste of crab meat, red crab surface, white meat, good elasticity, abundant nutrition and diversified edible methods. The artificial crab meat of the invention is more popular in market with better economic and social benefits.

The invention discloses a feed for improving mutton quality and an application thereof, relates to a feed for improving mutton quality and belongs to the technical field of livestock feeds. The feed is characterized by comprising, by weight, 60% to 80% of broad bean or broad bean halves, 2% to 6% of caragana microphylla, 6% to 13% of cottonseed meal, 6% to 12% of rapeseed meal, 0.5% to 2% of maize straw, 2.0% to 3.0% of soya-bean oil, 1.5% to 2.0% of monocalcium phosphate, 0.15% to 0.25% of choline chloride and 1% to 2% of preliminary powders. The feed has the advantages that the growth of sheep can be accelerated, the growth speed is increased, the feed coefficient during breeding of sheep can be remarkably decreased, the production cost is lowered, the feed is suitable for industrialized production, the muscle moisture content can be decreased, the muscle water loss rate can be remarkably lowered, the muscle myofibril folding-resistant force and muscle fiber diameter are improved, the contents of amino acid, aspartic acid, glutamic acid and glycine which have delicate flavor in the muscle can be remarkably increased, and the meat is fresh and delicious.

A muscle protein purifying method adjusts the concentrations of KCl, ATP and ammonium sulfate (A.S.) through the influences of different solution mediums on separation and purification and analyzes the dissociation and precipitation law of all fibrillin components and determines the separation and purification conditions of actin, myoballs and paramyosin with the ATPase activity as the protein denaturation indicating parameter. The method has the advantages that compared with a traditional protein purifying method, the novel method is low in purified protein denaturation degree and simple in purifying process, the actin, myoballs and paramyosin in smooth muscles of aquatic invertebrates are efficiently obtained through purification, and the purifying cost is saved to the maximum extent.

The invention belongs to the technical field of food processing, and particularly relates to a myofibrillar protein/xanthan gum composite emulsion rich in functional factors and a preparation method of the myofibrillar protein/xanthan gum composite emulsion. The preparation method comprises the following steps: separately dissolving myofibrillar protein and xanthan gum in deionized water, performing stirring for 1-2 h, and regulating the pH of the solution to 3-7 so as to obtain a protein stock solution and a xanthan gum stock solution separately; mixing the protein stock solution with the xanthan gum stock solution in proportion, and performing stirring for 2-4 h so as to obtain a mixed solution; and dissolving liposoluble functional factors in fat, adding the fat in which the functionalfactors dissolve to the myofibrillar protein/xanthan gum mixed solution, performing stirring for 1-2 h, performing shearing and homogenizing for 2 min, and then performing high-pressure homogenizing so as to obtain the myofibrillar protein/xanthan gum composite emulsion rich in functional factors. The obtained myofibrillar protein/xanthan gum composite emulsion is good in stability and uniform insize distribution. As one ingredient, the myofibrillar protein/xanthan gum composite emulsion is applied to trade of functional foods and health-care products.

A process for cooking a food in oil and/or fat is provided. An acidic dry protein mixture, an alkaline dry protein mixture, an aqueous alkaline protein mixture or an aqueous acidic protein is added to a food prior to cooking. The food containing the protein is cooked in a fat and/or oil. Accumulated fat and/or oil on the surfaces of the cooked food then is removed. The acidic dry protein mixture, alkaline dry protein mixture, aqueous alkaline protein mixture and aqueous acidic protein solution comprise myofibrillar proteins and sarcoplasmic proteins substantially free of myofibrils and sarcomeres. The amount of oil and/or fat absorbed by the food during cooking is substantially reduced.

The invention discloses a meat tenderizing method for improving the pyrolysis of myofibril and belongs to the field of food processing technologies. The meat tenderizing method is characterized in that fresh or unfrozen raw meat is cleaned and put into clear water with the mass of 0.8-1.2 times that of the raw meat, and a meat tenderized agent with the mass 4-8% of that of the raw meat is added, stirred uniformly, soaked and drained off to obtain tenderizing raw meat; adenine nucleotide, salt and sodium lactate constitute the meat tenderized agent. According to the invention, the salt and sodium lactate are used for restraining adenine nucleotide deaminizing enzyme; compared with the conventional salt pickling method, more than 40% of a shearing force can be lowered, the cooking loss is reduced, the color and luster are improved, the freshness and nutritive value of meat can be improved, and the quality of the meat can be improved, so that the meat tenderizing method has a wide application prospect in the meat processing field.

The invention discloses a method for determining a myofibrillar fragmentation index (MFI) by microscopy. A meat sample without visual fat or connective tissue is put into a homogenizer, a separating medium with the temperature of 2 DEG C is added into the homogenizer for homogenating at a high speed and a low temperature, then supernatant liquor is slowly poured out, precipitate is retained, and the separating medium with the temperature of 2 DEG C is added into the precipitate again in the precipitation process to make a suspension with a stirring rod; and the steps are repeated for the prepared suspension, the supernatant liquor is poured out, the precipitate is still retained, the separating medium with the temperature of 2 DEG C is added into the precipitate and is mixed with the precipitate uniformly on a turbine mixer, the connective tissue is filtered out with a screen of 200 meshes, the separating medium with the temperature of 2 DEG C is added again to help myofibril to pass through sieve holes, the volume of the suspension is adjusted to be 10mL, the myofibril and the suspension are uniformly blended, 1 muL of myofibril suspension is sucked and dropped on a mica plate, and is naturally withered, an atomic power microscopic examination is directly carried out, and myofibrillar fragments are counted. The influence of the size of the myofibrillar fragment on a light absorption value in an absorption photometry of the existing method is avoided, and accidental errors are reduced.

Methods and systems for separating muscle tissue from connective tissue are provided, in which animal tissue containing both muscle tissue and connective tissue is subjected to stress, and muscle proteins are separated from the connective tissue. Slurries of separated myofibrillar protein are also provided.

A process for cooking a potato in oil and/or fat is provided. An acidic dry protein mixture, an alkaline dry protein mixture, an aqueous alkaline protein mixture or an aqueous acidic protein or peptide derived therefrom is added to a food prior to cooking. The acidic dry protein mixture, alkaline dry protein mixture, aqueous alkaline protein mixture and aqueous acidic protein solution comprise myofibrillar proteins and sarcoplasmic proteins substantially free of myofibrils and sarcomeres. The uncooked potato and protein and/or peptide is frozen and then cooked in a fat or oil. The amount of oil and/or fat absorbed by the food during cooking is substantially reduced.