2639 results about "Functional food" patented technology

The invention provides a composition beneficial to improvement of brain cognition, memory and sleep and prevention and improvement of Alzheimer's disease, and belongs to the technical field of health food. The composition comprises L-alpha-glycerophosphorylcholine (GPC), phosphatidylserine (PS), docosahexaenoic acid (DHA), tea leaf theanine (L-theanine), vitamin B groups, vitamin D3 and the like, and is prepared into a health care product, a dietary supplement, a functional food, a medical food or a nutritional supplement by adopting the existing technology. The traditional Chinese medicine composition has the effects of effectively nourishing nerve cells, improving the brain sensitivity and improving the cognitive function. The composition is particularly directed at age-related cognitive decline and neurodegenerative diseases. Repair and regeneration of nerve cells can be promoted, the transmission efficiency of neural signals is enhanced, and the overall working efficiency of the brain is improved. Daily life challenges caused by cognitive decline can be relieved, and individual life quality can be improved.

The invention discloses tetrapeptide KA4 with an anti-fatigue function as well as a preparation method and application of the tetrapeptide KA4, and belongs to the technical field of biology. The tetrapeptide KA4 is screened from pacific salmon protamine enzymatic hydrolysate, the amino acid sequence is KYPA, and the tetrapeptide KA4 has strong binding capacity with KEAP1, AMPK and LDH, can significantly reduce the serum lactic acid content of a fatigue model mouse and significantly increase the load swimming time of the fatigue model mouse, has an anti-fatigue function, and can be applied to development of functional food for relieving fatigue.

The invention relates to the technical field of microorganisms, in particular to application of lactobacillus rhamnosus KF7 in improving intestinal barrier injury and regulating intestinal flora and functional food containing the lactobacillus rhamnosus KF7. The invention provides application of lactobacillus rhamnosus KF7 in preparation of a product for improving intestinal barrier injury and / or regulating intestinal flora. The preservation number of the lactobacillus rhamnosus KF7 is CGMCC (China General Microbiological Culture Collection Center) NO.6430. The invention further provides application of the lactobacillus rhamnosus KF7 in preparation of a product for improving intestinal barrier injury and / or regulating intestinal flora. The invention discloses the novel application of the caseus rhamnosus KF7 in the aspects of improving the normal intestinal epithelial barrier function, protecting the normal intestinal epithelial barrier from lipopolysaccharide induced barrier injury, recovering animal intestinal barrier injury caused by rhythm disorder, regulating intestinal flora disorder and improving growth, development and metabolic states for the first time. The method can be used for producing functional food products such as fermented milk, lactic acid bacteria beverages, probiotic powder, viable bacteria water, milk powder and cheese.

The invention discloses application of fucoidin degrading enzyme OUC-MgFucD1 in preparation of fucoidin oligosaccharide, and belongs to the technical field of preparation of the fucoidin oligosaccharide. The amino acid sequence of the fucoidin degrading enzyme OUC-MgFucD1 is as shown in SEQ ID NO. 1, and the fucoidin degrading enzyme OUC-MgFucD1 is as shown The fucose oligosaccharide is fucose, fucodisaccharide and fucotriose, the molecular formula of the fucose is C6H12O8S, the molecular formula of the fucodisaccharide is C12H22O15S2, and the molecular formula of the fucotriose is C18H32O16S. The invention further discloses a preparation method of the fucose oligosaccharide. The fucoidin degrading enzyme OUC-MgFucD1 disclosed by the invention can specifically act on fucoidin, and a specific fucoidin oligosaccharide combination is generated by precisely cutting a main chain glucosidic bond of the fucoidin. The invention provides a key technical support for the development of high-added-value fucoidan oligosaccharide products, and has important significance for promoting the industrial application of the fucoidan oligosaccharide in the fields of functional foods, biological medicines and the like.

The invention discloses sea cucumber gonad-derived antioxidant peptide as well as a preparation method and application thereof, and belongs to the technical field of food biology. The antioxidant peptide is obtained by carrying out enzymolysis and molecular docking screening on sea cucumber gonads, and comprises at least one of peptides with amino acid sequences as shown in SEQ.ID.NO.1-4. Wherein the docking energy of the SEQ.ID.NO.1 and the receptor SOD is-7.5 kcal / mol, the docking energy of the SEQ.ID.NO.2 and the receptor SOD is-7.5 kcal / mol, the docking energy of the SEQ.ID.NO.3 and the receptor SOD is-7.4 kcal / mol, and the docking energy of the SEQ.ID.NO.4 and the receptor SOD is-7.2 kcal / mol. Tests prove that the antioxidant peptide has high antioxidant activity and has wide application space in the field of functional food.

The invention provides compositions comprising a source of protein and a urolithin. The invention also provides uses and methods associated with, or making use of the compositions, such as a medicament, dietary supplement, functional food or medical food and in the treatment and / or prophylaxis of a muscle-related pathological condition. The invention also provides kits comprising urolithin and protein.

The invention discloses a production process control system for functional food, and belongs to the technical field of production equipment control systems, and the system specifically comprises a parameter collection module which is used for collecting raw material characteristic parameters of functional food raw materials, and the raw material characteristic parameters comprise rheological characteristic parameters, thermal stability parameters and structural strength parameters; the process adaptation module is used for constructing a dynamic process adaptation model and mapping the raw material characteristic parameters into an equipment control instruction set; dividing energy demand levels according to raw material processing stages, and generating an on-demand energy supply tree structure; the equipment adjusting module is used for monitoring operation state data of the production equipment in real time; triggering a process parameter dynamic compensation instruction based on the equipment operation state data; the equipment feedback module is used for comparing the deviation between the actual product characteristics of the production line and the target characteristics through the closed-loop verification unit, and iteratively optimizing the dynamic process adaptation model; precise production, energy conservation and efficiency improvement of functional food are achieved through the multi-module cooperation technology.

The invention discloses a preparation method of high-purity red date polysaccharide nano-selenium, and belongs to the field of biological material preparation. The preparation method of the high-purity red date polysaccharide nano-selenium comprises the following steps: adding water to dissolve red date polysaccharide to obtain a red date polysaccharide solution, then mixing the red date polysaccharide solution with a nano-selenium solution, reacting to obtain a mixed solution, and separating and purifying to obtain the red date polysaccharide nano-selenium. According to the preparation method disclosed by the invention, high-purity red date polysaccharide nano-selenium can be efficiently and stably prepared, the product has huge application potential in the fields of biomedicine, functional food and the like, and powerful technical support is provided for the development of related industries. Compared with a conventional process in the prior art, the preparation process for preparing the red date polysaccharide and the nano-selenium first and then compounding the red date polysaccharide and the nano-selenium to obtain the final product has obvious performance advantages in the aspects of product purity, storage stability and the like, and powerful technical support is provided for further application and development of the red date polysaccharide nano-selenium.

The invention discloses a compound composition with a multi-target heart protection function as well as a preparation method and application of the compound composition. The composition is composed of a basic functional oil phase, a core antioxidant / anti-inflammatory phase, a myocardial nutrition and regulation phase and a bioavailability promotion phase in a synergistic manner, and is integrated into a composite cardiac oligopeptide and microencapsulated particle key component substance through a specific enzymolysis and microencapsulation embedding process system. The invention aims to solve the technical problems of single target spot, insufficient synergistic effect of all components, low bioavailability of active components and poor stability of the existing heart protection product, and provides a stable and easily-absorbed composite composition which can realize synergistic effect from multiple channels at the same time. Technical effect verification shows that under the condition of equal-dose sample feeding, the composition can remarkably improve the bioavailability of functional components and shows excellent myocardial cell oxidative damage resistance and myocardial ischemia improvement activity in cell and animal models, the effect is remarkably superior to that of independent use or simple physical mixing of all the components, and the composition is suitable for clinical application. And the substantial progress of synergistic interaction is proved. The composition can be used for developing various medicines, health foods and functional foods beneficial to heart health.

The invention relates to a mulberry leaf flavone microcapsule as well as a preparation method and application thereof, and belongs to the technical field of microcapsule drug loading. The preparation method of the mulberry leaf flavone microcapsule comprises the following steps: S1, adding mulberry leaf flavone into a chitosan solution, carrying out ultrasonic treatment, shearing by using a homogenizer, and heating and stirring to obtain a mixed solution; s2, slowly dropwise adding a sodium tripolyphosphate solution into the mixed solution, reacting and curing until the solution becomes milk white liquid from clear and no precipitate is generated, then centrifuging and washing, and collecting particles; and S3, freezing the particles, and performing freeze drying to obtain the mulberry leaf flavone microcapsules. The mulberry leaf flavone microcapsule provided by the invention can be used for developing a novel medicinal preparation in the field of medicines, and can relieve disease symptoms and delay disease progression through the antioxidant and anti-inflammatory characteristics of the mulberry leaf flavone microcapsule; in the field of food, the method can be applied to development of functional food, for example, the method can be added into beverages and health-care products to provide health benefits of antioxidation, blood fat reduction and the like for consumers.

The present invention belongs to the field of microbial technology, and specifically relates to a strain of Saccharomyces boulardii separated from fermented grains of Maotai-flavor liquor and its application. The strain is specifically Saccharomyces boulardii BD‑2, and its deposit number is CGMCC No.24930. Saccharomyces boulardii BD‑2 originates from the fermented grains in the fermentation process of the traditional fermented food Maotai-flavor liquor, and is a safe strain that can be used for food; it has strong acid resistance, bile salt resistance, high temperature resistance and gastrointestinal fluid resistance, as well as high self-aggregation, hydrophobicity, antioxidant activity and Helicobacter pylori inhibitory activity, has good in vivo survival ability and excellent prebiotic properties, and can be used in the fields of food, medicine, etc., such as winemaking, and the development of related functional foods and medicines.

The invention discloses a spirulina platense skin extract as well as a preparation method and application thereof, and relates to the technical field of biomedicine. The obscured spirulina skin extract is rich in various active ingredients including collagen family members, viscose protein, C1Q complement protein, fibronectin and the like, and the ingredients complement and promote one another, so that the extract has remarkable effects in the aspects of skin aging resistance, skin injury repair and the like; therefore, the method has a wide application prospect in medicine research and development, cosmetics and functional foods. According to the extraction method of the skin protein of the obtuse spirulina, the sample is subjected to rapid freeze thawing treatment, and the steps of mechanical crushing, ultrasonic-assisted separation and multiple filtration are combined, so that the influence on the activity of the product is avoided, and various compound proteins can be obtained; the pH value of a buffer solution is adjusted, the property of the extract is further optimized, and the extract is more suitable for human skin, is sterile and can be directly used as a product raw material, so that large-scale production is realized, and industrial application of the obtuse spirulina skin extract is promoted.

The invention discloses ACE (Angiotensin Converting Enzyme) inhibitory octapeptide YI8 derived from bovine cheese protein hydrolysate and application, and relates to the technical field of bioactive peptides, and the technical scheme is characterized in that the ACE inhibitory octapeptide YI8 comprises an amino acid sequence of YKVPQLEI. The ACE inhibitory octapeptide YI8 derived from the cattle cheese protein hydrolysate is obtained by screening from the cattle cheese protein hydrolysate, and is an octapeptide YI8 with ACE inhibitory activity, the in-vitro ACE inhibition rate of the ACE inhibitory octapeptide YI8 derived from the cattle cheese protein hydrolysate is tested to be 70.86% under the condition of the concentration of 1mg / ml, and the ACE inhibitory octapeptide YI8 is suitable for functional food for assisting in lowering blood pressure.

The invention belongs to the technical field of functional foods, and particularly relates to a peptide-containing composition with a function of improving qi and blood as well as a preparation method and application of the peptide-containing composition. The peptide-containing composition comprises ginseng oligopeptide, donkey-hide gelatin peptide, bovine blood peptide, wolfberry peptide, fish collagen peptide, American ginseng peptide, lily extract, licorice extract, sea buckthorn fruit powder, polydextrose and xanthan gum. According to the peptide-containing composition, a plurality of small-molecule active peptides are innovatively used as core components, and plant extracts, dietary fibers and fruit powder which have a synergistic effect are matched; the traditional Chinese medicine composition not only has advantages in absorption and utilization of components, but also is more comprehensive and deep in effect and action mechanism of improving qi and blood. Through the synergistic effect of a plurality of peptide components, generation of qi and blood can be promoted from a plurality of aspects, running of qi and blood can be regulated, meanwhile, immunity and oxidation resistance of the body are enhanced, and a more effective solution is provided for improving qi and blood.

The invention discloses lactobacillus reuteri LR69 capable of enhancing a gastric mucosal barrier and application, a product and a method thereof, and belongs to the technical field of microorganisms. The invention provides a lactobacillus reuteri LR69, and the preservation number of the lactobacillus reuteri LR69 is CGMCC (China General Microbiological Culture Collection Center) No.33731. The lactobacillus reuteri LR69 is a lactobacillus reuteri LR69. The invention also provides application of the strain in preparation of food with an auxiliary protection function on gastric mucosa, and / or food with an intestinal flora regulating function, and / or a product for relieving gastritis, and / or food with an immunity enhancing function, and / or a bacteriostatic agent. The invention further discloses a food with an auxiliary protection function on gastric mucosa, a food with an intestinal flora regulating function, a product for relieving gastritis, a food with an immunity enhancing function, a bacteriostatic agent and an in-vitro bacteriostasis method based on the strain. The lactobacillus reuteri LR69 disclosed by the invention can effectively assist in protecting gastric mucosa, regulating intestinal flora, relieving gastritis, enhancing immunity and realizing broad-spectrum bacteriostasis.

The invention relates to the technical field of food processing, and in particular relates to a sparrow chensinensis Kangpu tea as well as a preparation method and application thereof, the preparation method comprises the following steps: extracting sparrow chensinensis and water according to a ratio of 1: (50-100) at 70-90 DEG C for 40-60 minutes, filtering, and adding cane sugar to obtain a fermentation substrate; the preparation method comprises the following steps: preparing seed liquid, namely activating casei paracasei, phytobacterium plantarum, acetobacter pasteurianus and kluyveromyces marxianus into seed liquid, inoculating the seed liquid into a substrate according to the inoculum size of 0.5-1.5%, fermenting for 5-10 days under the conditions that the temperature is 37 DEG C and the pressure is 0.03-0.05 MPa, and sterilizing (optionally drying) to obtain the parochetus ocellatus Kangpu tea. The preparation method of the parochetus ocellatus Kangpu tea is accurate and controllable in fermentation, safe and stable; the product retains the nutrition of the raw materials, the bioavailability of polyphenol after fermentation is improved, the antioxidant activity is enhanced, the flavor is soft, caffeine is avoided, and the product is suitable for a wide range of people and can be used for preparing antioxidant functional food.

The invention provides a traditional Chinese medicine fermentation extracting solution and a preparation method and application thereof, and relates to the technical field of traditional Chinese medicine cosmetics. A traditional Chinese medicine composition which is composed of sophora flower bud, clove, honeysuckle, citron, astragalus membranaceus, houttuynia cordata, turmeric, emblic leafflower fruit, rehmannia and roselle and has an anti-aging effect is reasonably combined, and the traditional Chinese medicine fermented extract is obtained after the traditional Chinese medicine composition is fermented for multiple times by utilizing compound probiotics. The traditional Chinese medicine fermentation extract has a strong free radical scavenging effect, has an obvious improvement effect on cell activity, can obviously inhibit matrix protease activity, can obviously improve MDA content in serum of an aging mouse model and indexes of SOD, CAT, GSH-Px activity and the like, and has obvious anti-oxidation and anti-aging effects. The traditional Chinese medicine fermentation extracting solution provided by the invention can be used for preparing anti-aging cosmetics or functional foods, is safe and non-irritant when being used for human skin, and has an obvious improvement effect on the elasticity, wrinkles and smoothness of the human skin.

The invention relates to the field of biological agents, in particular to a compound probiotic preparation rich in organic selenium and a preparation method of the compound probiotic preparation, and efficient synergistic delivery is achieved through plant micromolecule organic selenium extraction and a multi-layer microemulsion embedding technology. The preparation consists of a core active component, a carrier system and a curcumin compound. The plant micromolecular organic selenium is extracted from cardamine hupingshanesis and high-selenium corn flour through an HLUP technology, and the bioavailability is remarkably improved. A corn protein modified W / O / W microemulsion is adopted as a carrier, an outer layer membrane is stable in an acid environment, and an inner layer accurately releases selenium to small intestines; a protective agent composed of trehalose and glucose inhibits ice crystal damage, and glutaraldehyde crosslinking enhances the mechanical strength of the membrane. Curcumin and selenium synergistically enhance antioxidant and immunomodulatory functions, and promote phagocytic activity of macrophages. The stability and bioavailability bottlenecks of a traditional preparation are broken through, and an innovative scheme is provided for functional food development.

The invention belongs to the technical field of functional food, and relates to prebiotic dried sweet potatoes and a preparation method thereof. Comprising the following steps: thermally drying the surfaces of cut sweet potato strips / slices, atomizing and spraying alpha-amylase, and then steaming and liquefying; the steaming and liquefying process comprises the following steps: steaming at 55-65 DEG C, and heating to 85-100 DEG C for steaming; performing primary drying, atomizing and spraying an enzyme preparation solution on the surfaces of the primarily dried sweet potato strips / slices, and performing saccharification and glucoside conversion; enzyme preparations in the enzyme preparation solution are beta-amylase and alpha-glucosidase; and carrying out two-stage drying dehydration on the saccharified and glucoside-converted dried sweet potatoes, cooling, and carrying out high-temperature sterilization. The preparation method provided by the invention is simple and convenient in process; rich starch and soluble sugar of the sweet potatoes are converted into bifidus factor isomaltooligosacharide, so that the product has a probiotic function, and the functionality and additional value of the product are increased; and the prepared dried sweet potatoes also have a preservative effect.

The invention relates to the technical field of biology, in particular to a DPP-IV inhibitory peptide extracted from buffalo cheese protein hydrolysate and application of the DPP-IV inhibitory peptide. An active component with the molecular weight smaller than 3 kDa is obtained through alkaline protease enzymolysis, ultrafiltration separation and LC-MS / MS identification, and the DPP-IV enzyme inhibitory activity IC50 value of the active component is 12.6 mg / mL. Four new DPP-IV inhibitory peptide fragments are found, are amino acid sequences in a sequence table SEQ ID NO: 1-4, have good DPP-IV inhibitory activity, and have good application prospects in being developed into functional foods or medicines for regulating blood sugar. In conclusion, the enzymolysis product and the peptide fragment can be prepared into antidiabetic drugs or functional foods, and have the advantages of being natural, safe and efficient. The invention provides a new strategy for high-valued utilization of buffalo milk resources and treatment of type 2 diabetes.

The present invention belongs to the technical fields of biological bacterium agents and functional food processing. Specifically, it relates to a bacterium agent for soybean milk fermentation and its application, a soy cheese stick and a preparation method thereof. The bacterium agent for soybean milk fermentation provided by the present invention uses Lactobacillus helveticus HL88 and Lactobacillus casei BL25 in combination. It can not only quickly acidify the soy milk, shortening the coagulation time of soy cheese, but also more fully hydrolyze soy proteins, releasing more short peptides and amino acids. In particular, it can highly produce γ-aminobutyric acid (GABA), enhancing the fermentation effect and nutritional value of soybean milk. Further, the soy cheese food prepared by fermenting with the above bacterium agent not only has a strong soy milk fragrance and a smooth texture, but is also easily digested and absorbed, improving the digestibility and reducing the soybean allergenicity, especially helping to improve exercise fatigue and enhance sleep quality. Therefore, the above bacterium agent provided by the present invention has excellent application prospects in the field of preparing functional foods for anti-fatigue and promoting sleep.

The invention discloses an edible and medicinal composition for dispelling effects of alcohol and protecting liver as well as a preparation method and application thereof, and belongs to the technical field of functional foods. The composition consists of the following raw materials in parts by weight: 1-8 parts of ampelopsis grossedentata extract freeze-dried powder, 1-8 parts of astragalus membranaceus extract freeze-dried powder, 1-5 parts of kudzu vine root extract freeze-dried powder, 1-8 parts of hawthorn extract freeze-dried powder and 1-5 parts of cassia seed extract freeze-dried powder. The composition is designed according to a multi-component synergistic interaction principle, and the functions of protecting the liver and dispelling the effects of alcohol are enhanced through targeted interaction of active ingredients such as ampelopsis grossedentata flavone, puerarin and astragaloside; the compound preparation has the compound effects of protecting the liver, dispelling the effects of alcohol, resolving dampness, resisting oxidative stress, regulating lipid metabolism and the like, can remarkably relieve the problems of acute and chronic liver injury and metabolic disorder caused by alcohol intake, and meets the food-grade safety standard and the medicinal activity requirement; the important application prospect is realized in the aspect of preparing a preparation for relieving alcoholic liver injury and improving the liver detoxification function.

The invention belongs to the technical field of biology, and particularly relates to a preparation method and application of a rose extract, and the content of water-soluble vitamins in roses is increased by utilizing a microbial fermentation technology. According to the method, strains including lactobacillus plantarum, saccharomyces cerevisiae and bacillus subtilis are selected, the proportion of the strains is adjusted, the viable count proportion of the lactobacillus plantarum to the saccharomyces cerevisiae to the bacillus subtilis is (1-3): (1-2): (1-2), a complex microbial inoculant is formed, and pretreated roses are added for segmented fermentation. And finally, the content of water-soluble vitamins in the rose extract is increased, so that the total antioxidant activity is increased by about 35% while rose polysaccharide substances are retained. The rose extract is suitable for providing raw materials for functional food, health care products and cosmetics.

The invention discloses a composition for promoting cartilage repair and maintaining joint health as well as a preparation process and application thereof, and relates to the technical field of functional foods. The composition is prepared from the following components in parts by weight: 21.1 to 90 parts of a multi-protein complex, 0.1 to 3 parts of cherry powder, 0.01 to 2 parts of N-acetylglucosamine, 0.01 to 2 parts of radix puerariae powder, 0.1 to 1.5 parts of a calcium compound and 0.01 to 0.2 part of rhizoma curcumae longae, the multi-protein compound is prepared from 0.1 to 10 parts of ray collagen peptide, 1 to 30 parts of bone collagen peptide powder and 20 to 50 parts of fish collagen peptide. The composition provided by the invention can promote cartilage repair, achieves the purpose of daily maintenance of joint health, and has a good application prospect.

The invention discloses a panax quinquefolius probiotic beverage and a preparation method thereof, and relates to the technical field of functional foods. According to the beverage, the combination of the American ginseng extract and specific probiotics is taken as a core, the survival rate of thalli is increased by adopting a microcapsule embedding technology, and the product performance is optimized by adding a stabilizer and a flavor regulator. The formula comprises 5-15% of a panax quinquefolius extract, 3-8% of compound probiotic freeze-dried powder (lactobacillus plantarum, lactobacillus salivarius and bifidobacterium lactis), 10-25% of inulin, 5-15% of whey protein, 10-30% of a microcapsule wall material (sodium alginate / chitosan or a WPI-KGM compound), and auxiliary materials. According to the preparation method, the active ingredients are efficiently reserved through the processes of gradient extraction, microcapsule embedding, low-temperature drying and the like. The product has the functions of resisting fatigue, regulating intestinal flora and enhancing immunity, the survival rate of probiotics in simulated gastric juice reaches 85% or above, and the shelf life stability is improved by 40%.

The invention belongs to the technical field of microorganisms and fermentation engineering, and particularly relates to application of bifidobacterium longum subsp. Infantis Y46 in the aspects of enhancing cell defense and repair and regulating metabolic homeostasis of a host. The strain is isolated from infant feces. Animal experiments prove that living cell thalli of the bifidobacterium longum subsp. Infantis Y46, which are obtained by culturing an MRS liquid culture medium added with L-cysteine hydrochloride (0.05%, v / v), can significantly enhance the oxidative stress resistance of an organism and reduce the level of active oxygen in the organism compared with a control bacterium bifidobacterium longum subsp. Infantis 15697. Transcriptomics analysis shows that the bifidobacterium longum subsp. Infantis Y46 can enhance self-protection of cells and improve physiological imbalance caused by external pressure by regulating related signal channels of an organism. The action mechanism is closely related to signaling pathways related to cell defense, metabolic homeostasis and barrier functions. The invention provides a new strain resource and an application scheme for developing functional food or medicinal preparations for enhancing the health defense function of a human body.

The invention belongs to the technical field of preparation of peptides, and relates to a hippocampus polypeptide and application thereof. The amino acid sequence of the hippocampus polypeptide is shown as SEQ ID NO.1 in a sequence table. The hippocampus polypeptide provided by the invention has excellent anti-hypoxia activity, and by virtue of the characteristic, the hippocampus polypeptide can be used as an active component to be added into food, beverage or dietary supplement to prepare functional food or health care products for daily use of specific people so as to enhance tolerance to an anoxic environment.

The invention relates to the field of polypeptides, in particular to a red camellia polypeptide as well as a preparation method and application thereof. Red camellia is used as a raw material, high-pressure homogenization wall breaking and pepsase enzymolysis are performed, and separation and purification are performed to obtain the red camellia polypeptide with repairing, moisturizing, oxidation resisting and nourishing functions. The polypeptide prepared by the invention is more efficient, safer and more environment-friendly, and has a wide application prospect in the fields of cosmetics, functional foods and biological medicines.

The invention relates to the field of medicines, foods or health-care products, in particular to big-fruit hawthorn heteropolysaccharide as well as a preparation method and application thereof. The large-fruit hawthorn heteropolysaccharide is prepared from galacturonic acid, glucuronic acid, mannose, xylose, arabinose, glucose, galactose, fucose and rhamnose. The weight-average molecular weight of the big fruit hawthorn heteropolysaccharide is 81.6 kDa to 157.3 kDa. The product has unique structures of complex monosaccharide composition, low molecular weight, appropriate uronic acid content, low esterification degree and the like; compared with CP which is single in structure and high in esterification, the CP is better in oxidation resistance and bile acid binding capacity; compared with hawthorn polysaccharide with low uronic acid content and high molecular weight, the hawthorn polysaccharide has the advantages that the enzyme inhibition activity is obviously enhanced, and the hawthorn polysaccharide has a wide prospect in development of functional food, health care products or medicines for regulating blood sugar / blood fat, resisting oxidation and preventing metabolic syndromes.

The invention belongs to the technical field of functional food processing, and particularly relates to a method for synergistically improving functional characteristics by utilizing casein peptide and hydroxytyrosol self-assembly. According to the research, casein peptide with an excellent antioxidant function is used as a raw material, and hydroxytyrosol is added to be self-assembled with the casein peptide, so that the antioxidant activity is synergistically improved in an in-vitro digestion stage. Compared with a traditional protein and polyphenol combination technology, the casein peptide and polyphenol self-assembly method is provided, the antioxidant activity after digestion is improved, no toxic chemical reagent is introduced or added, and the casein peptide and polyphenol self-assembly method is safer, more efficient, more environmentally friendly and more sustainable. The method can be widely applied to functional food or health care products.