13 results about "Melanoidin" patented technology

This invention discloses a method for preparing Rehmannia glutinosa pulp with high retention of all its components after nine steaming and nine sun-drying processes, belonging to the technical field of deep processing of traditional Chinese medicine and preparation of functional foods. Using Rehmannia glutinosa processed through nine steaming and nine sun-drying processes from authentic Huai Rehmannia glutinosa as raw material, this method addresses industry pain points such as the inability to dry-crush candied Rehmannia glutinosa, low efficiency of traditional extraction methods, easy loss of heat-sensitive active ingredients, and difficulty in retaining all components. It adopts wet pulping instead of dry crushing and pioneers a three-stage progressive cell-wall breaking process of "enzymatic hydrolysis → ultrasound → microwave," achieving a synergistic effect of gentle biological cell-wall breaking, physically enhanced crushing, and low-temperature solubilization. Combined with vacuum low-temperature extraction, post-fermentation with probiotics, and low-temperature concentration, the entire process avoids membrane separation, protein removal, and purification of individual components. The finished product achieves a polysaccharide extraction rate of 90%–96%, a total retention rate of ≥65% for catalpol and rehmannia glycoside D, an increase of over 30% in melanoidin content, a decrease of over 25% in 5-HMF content, and an increase of over 13% in in vitro antioxidant activity. The process is gentle and controllable, suitable for large-scale industrial production.

The application discloses a method for identifying high-temperature Daqu based on near-infrared spectroscopy technology in the field of food detection technology, which comprises the following steps: 1) collecting Maotai-flavor high-temperature Daqu samples and collecting near-infrared spectrum data of the samples; 2) accurately quantifying the melanoidin content of the samples; 3) establishing a melanoidin identification model of near-infrared spectroscopy technology combined with a partial least squares method; 4) collecting near-infrared spectrum data of unknown samples, inputting the data into the model of step (3), obtaining melanoidin content data of the samples, and determining the Daqu type of the unknown samples according to the numerical range of the content data falling into which black, white or yellow Daqu. The application establishes a correlation model of near-infrared spectrum information and melanoidin information by the partial least squares method, and then predicts the melanoidin content of unknown samples by the near-infrared spectrum data, and further identifies the Daqu type (black Daqu, yellow Daqu and white Daqu).

The invention relates to the technical field of seafood soy sauce, in particular to seafood soy sauce and a preparation method thereof, and the seafood soy sauce comprises the following raw materials: defatted soybeans, wheat, edible salt, compound strains, dried scallop and kelp concentrated soup, a seafood flavor base material, lutein microcapsules and a yeast extract. After the shrimp heads are subjected to enzyme hydrolysis, small molecule peptides and amino acids can be generated; under a weak alkaline condition, the products are subjected to a Maillard reaction with xylose or glycine to generate high-boiling-point flavor substances such as pyrazines and furanones, so that the heat resistance of the products is remarkably improved; in addition, melanoidins and reducing ketone in the Maillard reaction product have the effect of scavenging free radicals, lipid oxidation can be effectively inhibited, and therefore the retention rate of flavor substances of the soy sauce is increased. A compact hydrophobic barrier is formed through a zein-pectin composite wall material, the oxygen barrier rate is effectively improved, and the xanthophyll keeps relatively high activity in an acid environment in combination with an optimized spray drying process, so that the activity loss in a storage process is reduced.

Provided is activated carbon that is suitable for purifying drinking water or its raw water and exhibits high PFAS adsorption performance. [Solution] Activated carbon that satisfies the following (1) to (3). (1) Melanoidin decolorization performance is 50% or more and 90% or less (2) Bulk ratio is 10 cc / g or more and 100 cc / g or less (3) The specific surface area based on the N2 adsorption isotherm at -196°C is 1000 m 2 / g or more 1800m 2 / g or less

The invention belongs to the technical field of livestock and poultry by-product processing, and particularly relates to a method for treating fishy smell of livestock and poultry products. According to the method, melanoidin is adopted to treat livestock products. According to the method, the fishy smell of the livestock product is directionally masked by using the natural small molecule water dissolved melanoidins and combining with the pulsed electric field, so that the fishy smell of the livestock product can be well masked, the functionality of the livestock product is enhanced, and the method has relatively high innovativeness and industrial application value.

The application discloses a method for synergistically hydrothermally treating sludge based on tea dregs and organic acid, which comprises the following steps: mixing sludge, organic acid and tea dregs, hydrothermally treating the obtained mixed slurry, and dehydrating to obtain filtrate and mud cake. The method for synergistically hydrothermally treating sludge based on tea dregs and organic acid can significantly reduce the hydrothermal reaction temperature under the synergistic action of tea dregs and organic acid, and can effectively inhibit the generation of refractory organic matters such as melanoidins while effectively improving the dewatering performance of sludge under the synergistic hydrothermal treatment of organic acid and tea dregs, so as to facilitate the reduction and resource utilization of sludge. Therefore, by fully utilizing the characteristics of organic acid and tea dregs and synergistically hydrothermal treatment technology, efficient, environment-friendly, resourceful and low-cost treatment of sludge can be realized, and the method has the advantages of low reaction temperature, high treatment efficiency, low energy consumption, good dewatering effect, green environmental protection and the like, and has a wide application prospect and popularization value.

A method for efficient hydrogen production from sludge by means of catalytic cracking and reforming promoted by sludge thermal hydrolysis by-product melanoidins, relating to the field of energy recovery from organic solid waste. In view of the problems in high-temperature thermal hydrolysis-pyrolysis processes that melanoidins inhibit sludge decomposition, the composition of pyrolysis gas is complex, and the directional regeneration of H2 is difficult, in the present invention, by-product melanoidins in a high-temperature thermal hydrolysis procedure are extracted to enhance the efficiency of gas production from cracking of thermally hydrolyzed sludge. The sludge is subjected to low-temperature thermal hydrolysis treatment, so that the surface is loose and the degree of organic matter devolatilization is enhanced, thereby promoting gas production from solid-phase cracking of thermally hydrolyzed sludge. Furthermore, melanoidins demonstrate superior reaction catalytic activity due to carboxyl groups and nitrogen-containing structures and achieve the best effect at 2.5 mg / g DW. The total gas production is increased by 6.54%. The melanoidins induce, in mixed gas from the cracking of thermally hydrolyzed sludge, a methane catalytic cracking reaction CH 4®C+2H 2 and a catalytic reforming reaction CH 4+CO 2®2CO+2H 2. The hydrogen yield is increased by at most 35.92%. The present invention effectively solves the engineering bottleneck problems of negative impact of melanoidins and low green energy recovery in the field of thermal hydrolysis-pyrolysis.

This invention discloses a method for preparing a seedling substrate for co-fermentation of baijiu lees and pomelo peel straw waste, which includes the following steps: (1) targeted exfoliation of pomelo peel essential oil and enrichment of nanocellulose; (2) micropore activation of baijiu lees; (3) stepwise depolymerization of straw; (4) multiphase micro-oxygen gradient co-fermentation; (5) in-situ bridging of melanoidins and triple network gelation; (6) biomimetic loading and granulation. This invention uses subcritical water targeted exfoliation and enzymatic microfluidic flow to not only precisely remove the antibacterial pomelo peel essential oil, but also convert it into highly active nanocellulose. Nanocellulose acts as a micro-reinforcing steel in subsequent steps, greatly enhancing the three-dimensional network strength of the substrate and preventing substrate collapse during seedling cultivation. It also eliminates the traditional practice of adding large amounts of alkali to neutralize and destroy nutrients. By utilizing the dynamic switching of the micro-oxygen fermentation stage, oxygen consumption is used to inhibit miscellaneous bacteria in the early stage, and the micro-oxygen environment is cleverly used to activate Lactobacillus plantarum in the middle stage. Lactic acid produced by Lactobacillus plantarum is used as a substrate and finally converted into propionic acid.

The invention discloses transparent coffee and a preparation method thereof. The preparation method comprises the following steps: (1) baking coffee beans: baking raw coffee beans at 220-240 DEG C for 14-18 minutes to obtain cooked coffee beans; (2) crushing coffee beans: cooling the cooked coffee beans to room temperature, and crushing the cooled coffee beans with a crusher until the particle size is 0.2-0.3 mm to obtain coffee powder; (3) extraction: mixing the coffee powder with the passion fruit juice diluent according to a mass ratio of 1: (12-20), and extracting at 60-100 DEG C for 10-50 minutes to obtain a coffee and passion fruit mixed solution; (4) filtering: removing residues in the coffee and passion fruit mixed liquid by using a filter screen of 195-205 meshes or a centrifugal machine of 495-505 rpm / min to obtain a coffee extracting solution; and (5) reduced pressure distillation: putting the extracting solution into a rotary evaporator, and distilling for 10-50 minutes at the temperature of 40-80 DEG C, the pressure of 0.05-0.15 MPa and the speed of 70-190 rpm / min to obtain the transparent coffee. Coffee powder is extracted through passion fruit juice diluent, reduced pressure distillation is conducted, the content of melanoidins in coffee extract is reduced, a large number of pigments are removed, meanwhile, a large number of caffeine and passion fruit flavor substances can be reserved, and transparent coffee with the passion fruit flavor and the coffee flavor is obtained.

The application discloses a kind of 10-30 kDa melanoidins in soy sauce directional color protection method, belong to food processing technical field.The defects that present soy sauce color protection technology targeting is poor, safety is low, product flavor is easily damaged, and insufficient adaptability, the application is added 0-0.1% mountain warehouse son oil or / and 0-0.5% chitosan in the post-processing stage of soy sauce brewing, chitosan molecular weight is 1-20 kDa, wherein 10-12 kDa color protection effect is optimal;While preferred process sequence is: after adding mountain warehouse son oil stirring evenly, then add chitosan.The application is by specific component raw material synergy and exclusive feeding process timing, and 10-30 kDa melanoidins in soy sauce is protected directionally.The method process is simple, safety is high, and it is suitable for low-salt solid, solid and dilute fermentation, high-salt dilute and other multi-class soy sauce, can effectively stabilize soy sauce color, significantly improve soy sauce finished product sensory quality and shelf stability, with good industrial application prospect.

The application discloses a sludge anaerobic acid production strengthening method based on synergistic degradation of melanoid-like substances by thermal hydrolysis and potassium permanganate, which comprises the following steps: (1) screening and removing impurities from sludge, and then performing gravity sedimentation and concentration; (2) thermal hydrolysis treatment: high-temperature and high-pressure treatment, pressure relief and cooling; (3) adding potassium permanganate for oxidation, and combining with ultrasonic dispersion; (4) anaerobic fermentation: inoculating active sludge, and controlling fermentation conditions; and (5) separating and extracting short-chain fatty acids. The application realizes the synergistic effect of thermal hydrolysis and potassium permanganate, targets the degradation of melanoid-like substances generated in the thermal hydrolysis process, eliminates the inhibition of the melanoid-like substances on anaerobic microorganisms, and promotes the efficient dissolution of organic matters in sludge. The nano manganese dioxide generated by potassium permanganate oxidation serves as an electron transfer medium, further strengthens the metabolic activity of acid-producing bacteria, and the pickling recovery rate is greater than or equal to 90%. The method makes the yield of short-chain fatty acids increase by 65% (up to 456 mg / g VS), has high efficiency and environmental protection, and provides an innovative solution for sludge resource treatment.

The present disclosure pertains to a process for the preparation of graphite-like carbon material from melanoidins comprising: a. extracting melanoidins from food products waste material, isolating the melanoidin and b. Pyrolyze the extracted and isolated melanoidin at a temperature of 500 to 1200°C, at inert atmosphere. The resulting material is used as hard carbon material and as a precursor for graphite, graphene, graphene carbon quantum dot material, carbon nanotubes, graphitic carbon nitride quantum dots, graphene oxide or combinations thereof.

The present application relates to the field of hexitol preparation, and discloses a catalyst with alcohol dehydration and cyclization functions and application thereof. The catalyst and method provided by the present application can significantly improve the selectivity of isosorbide and inhibit the generation of melanoidins in the process of preparing isosorbide from sorbitol.