324 results about "Nutritional quality" patented technology

The invention provides an application of citrus flavonoid glycosyl transferase CitUGT73A78 in biosynthesis of flavonoid glycoside, and belongs to the technical field of gene engineering and enzyme engineering. According to the present invention, the function of the CitUGT73A78 gene is cloned and verified, and the in vitro enzyme activity test proves that the CitUGT73A78 recombinant protein has broad-spectrum catalytic activity, and can efficiently catalyze the glucosylation of a variety of flavonoids so as to generate the corresponding flavonoids 7-O-glucoside and / or flavonoids 4 '-O-glucoside. An in-vivo transient overexpression test also proves that the CitUGT73A78 gene has a promoting effect on the accumulation of the content of the citrus flavonoid 7-O-glucoside. The invention not only provides a preparation method for the production of flavonoid 4 '-O-glucoside, has the advantages of simplicity, convenience, high catalytic efficiency, low cost, greenness and safety, but also can be applied to nutritional quality improvement and germplasm innovation of citrus fruits.

The invention relates to the technical field of molecular markers, in particular to a biomarker related to the zeaxanthin content character of sweet corn kernels and application of the biomarker. The RIL population is used for performing QTL positioning on the corn kernel zeaxanthin content character, it is found that a major QTL related to the sweet corn kernel zeaxanthin content exists on the sixth chromosome of corn, the major QTL is located between SNP sites Schr6: 83027949 and Schr6: 84835891, the phenotype contribution rate of the corn kernel zeaxanthin content is 18.69%, and the major QTL is a major QTL related to the sweet corn kernel zeaxanthin content. The major QTL can be used for screening or auxiliary screening of sweet corn with relatively high zeaxanthin content, when the genotype of Schr6: 83027949 is GG and the genotype of Schr6: 84835891 is AA, the zeaxanthin content is relatively high, technical support is provided for molecular marker-assisted breeding, and the major QTL has important significance in improving the nutritional quality of the sweet corn.

The invention belongs to the technical field of food lipid and processing, particularly discloses a one-pot enzymatic cascade degumming and deacidification method for grease and application, and particularly relates to a method for performing cascade degumming and deacidification on multiple kinds of grease, generating functional lipid, improving the quality of the grease and maintaining the flavor of the grease. According to the method, phospholipase is immobilized through the porous carrier and is successfully applied to enzymatic cascade degumming and deacidification, and degumming, deacidification or cascade degumming and deacidification can be carried out on different raw materials according to requirements. Moreover, the prepared grease is rich in functional lipid components, the flavor is efficiently reserved, the oxidation stability is improved, the nutritional quality is improved, the immobilized carrier is cheap and easy to obtain, the immobilized enzyme can be repeatedly used for multiple times and is remarkably superior to free enzyme, and the industrial application potential is huge.

The invention relates to the technical field of gene engineering, in particular to OsSULTR3; 1 protein and the coding gene thereof are applied to cultivation of selenium-rich plants. According to the invention, the OsSULTR3 is disclosed for the first time; 1 gene has the function of increasing the selenium content of rice, and OsSULTR3; 1 overexpression results in increase of the selenium content of rice grains. A new direction is provided for breeding of selenium-rich plants such as rice and the like and preparation of transgenic plants, the selenium content in the plants such as rice and the like can be remarkably improved by constructing and transforming the transgenic plants of the gene, the nutritional quality of the plants can be improved, and the gene has a wide application prospect.

The invention discloses a gene for regulating and controlling taro flavone biosynthesis and application thereof, and belongs to the technical field of biology. The gene comprises a CeHCT1 gene and a CeHCT2 gene; the nucleotide sequence of the CeHCT1 gene is as shown in SEQ ID NO. 9; and the nucleotide sequence of the CeHCT2 gene is as shown in SEQ ID NO. 10. The invention also provides application of the gene in regulation and control of taro flavone content and improvement of plant nutritional quality. The CeHCT1 and / or CeHCT2 genes of the main cultivated variety Xinhua Longxiang taro are / is subjected to multi-target knockout through a gene editing technology, the flavonoid content in the taro can be effectively increased, the nutritional quality of the taro is efficiently enhanced, and the method has a great significance in accelerating development and utilization of taro genes and has a great application prospect. The method for improving the nutritional quality of the taros by applying a biological enhancement technology has important theoretical and practical significance.

The present invention relates to a pea protein composition the nutritional quality, and in particular the PDCAAS, of which is improved, as well as to a method for preparing same and to the use of this composition in a food or pharmaceutical composition.

The invention discloses a near infrared spectrum-based millet maturity detection method, system and equipment and a medium, and relates to the technical field of agricultural product growth detection. The method comprises the following steps: calculating a normalized spectral index and an optimized spectral index of near infrared spectral data of a millet sample, and screening out characteristic wavebands related to various nutritional ingredients of millet in various spectrums; calculating a millet nutrition quality index according to the characteristic wave band and the correlation model; performing feature extraction on the near infrared spectrum data by utilizing the nutritional quality index of the millet to obtain related feature parameters of the maturity of the millet; the millet maturity related characteristic parameter is the proportion or change trend of nutritional ingredients; and constructing a maturity model according to the related characteristic parameters of the millet maturity, and detecting the near infrared spectrum data to be detected by using the maturity model to determine the maturity of the millet to be detected. The method can be used for rapidly, nondestructively and accurately detecting the nutritional quality of the millet.

The invention discloses a preparation method of a low-protein biological fermentation feed for crayfish, and belongs to the technical field of aquaculture feeds, and the preparation method comprises the following steps: high-temperature fermentation: uniformly mixing soybean meal, rapeseed meal, cottonseed meal and a mixed bacteria solution containing bacillus subtilis, lactobacillus plantarum, saccharomycetes and EM bacteria, and performing high-temperature fermentation to obtain a fermentation product; and performing low-temperature fermentation: adding shrimp shell meal, corn flour, rice bran, cellulase and phytase into the fermentation product, performing uniform stirring to obtain a mixture, and performing low-temperature fermentation on the mixture to obtain the product. According to the low-protein biological fermentation feed disclosed by the invention, by-products such as shrimp shell meal, rice bran and rapeseed meal are used as raw materials of the biological fermentation feed, so that the cost of the feed can be reduced; and the aims of enhancing the nutritional quality, improving the immunity and oxidation resistance of the organism and improving the environment of a culture water body can be fulfilled for culturing the crayfish with the specification of about 12 grams per crayfish.

The invention discloses a phycomycete composite biological fertilizer for an arid loess area as well as a preparation method and application of the phycomycete composite biological fertilizer, and belongs to the technical field of biological fertilizers. The phycomycete composite biological fertilizer is prepared from nitrogen-fixing anabaena and acinetobacter, counted by a single cell, the total viable count of the anabaena azotica is greater than or equal to 1.0 * 10 < 6 > CFU / mL, and the total viable count of the acinetobacter is greater than or equal to 1.0 * 10 < 7 > CFU / mL. Experiments prove that the phycomycete composite biological fertilizer can significantly improve the germination potential and germination rate of crop seeds, promote seedling growth, improve the nutritional quality of crops and reduce the death rate of seedlings, is suitable for various crops such as wheat, Shanghai Qing and peas, and has important application value in agricultural production in arid regions.

The invention aims to provide a method for improving nutritional quality of germinated brown rice through ultrasonic-assisted salt induction. Brown rice is a whole-grain product and is rich in nutritional ingredients such as starch, protein, dietary fibers, vitamins and mineral substances and active functional factors. The nutritional ingredients of the germinated brown rice change drastically, and the nutritional value of the brown rice is greatly improved. According to the method, brown rice is taken as a raw material, the brown rice is soaked in a CaCl2 salt solution under the assistance of ultrasound, the germination temperature and time are optimized, the concentration of the CaCl2 salt solution is taken as an influence factor, and the change rule of nutritional ingredients and functional factors of the brown rice in the germination process is researched. Results show that after ultrasonic-assisted salt induction treatment, the contents of vitamin B2 and vitamin B6 in the germinated brown rice are increased to 58.2 mu g / 100g and 0.438 mg / 100g, and the content of gamma-aminobutyric acid is increased to 42.6 mg / 100g (dry basis). The germination of the brown rice promotes the activation and release of hydrolases such as amylase, protease and phytase, and nutritional ingredients in the brown rice are migrated, degraded, accumulated and the like, so that the nutritional quality of the brown rice is remarkably improved.

The invention discloses a method for increasing the content of carotenoid in cucumbers, a related biological material and application. The invention discloses a method for increasing the content of carotenoid in cucumbers. The content of carotenoid in cucumbers is increased by knocking out CsNCED4 genes. The CsNCED4 gene is as shown in SEQ ID No.1 (Sequence Identifier Number 1). The CsNCED4 gene is knocked out through a CRISPR / Cas9 (clustered regularly interspaced short palindromic repeats / CRISPR associated protein 9) technology, and the used target sequences are shown as SEQ ID NO.3 and SEQ ID NO.4. The recombinant expression vector comprises a complementary sequence of the target spot sequence in the method. The recombinant microorganism comprises the target sequence in the method or the recombinant expression vector. The invention provides a method for rapidly creating a cucumber material with high carotenoid content, and provides a theoretical basis and a practice mode for improving the nutritional quality of cucumbers.

The invention discloses a method for analyzing the influence on the quality of colored highland barley based on altitude gradient, relates to the technical field of agricultural product analysis, and provides a method for analyzing the influence on the quality of colored highland barley based on altitude gradient, which comprises the following steps: step 1, respectively planting 100 parts of colored highland barley in farmlands with different altitudes; step 2, harvesting the colored highland barley mature at different altitudes; 3, detecting nutritional ingredients contained in the colored highland barley at different altitudes to obtain nutritional ingredients of the colored highland barley; and 4, analyzing the influence of different altitudes on the nutrient content of the colored highland barley and the difference between the nutrient quality contents of the colored highland barley. Data support is provided for application of the colored highland barley in nutrition and health food processing, and a reference basis is provided for layout of highland barley production areas in different altitude areas and breeding of high-quality and high-yield colored highland barley.

The invention relates to the technical field of meat product detection, in particular to a meat and meat product quality detection system and method.The key point of the technical scheme is that the meat and meat product quality detection system comprises a data acquisition unit, a data processing and analysis unit, a judgment and early warning unit and a sample sorting unit; the data processing and analyzing unit is used for extracting a sample region of interest according to the hyperspectral image, calculating a weighted mean spectral response curve, and carrying out preprocessing and characteristic wave band screening on the spectrum; according to the method, spectral information of hyperspectral images of meat and meat products is collected, a sample is identified based on visible light bands, a weighted mean spectral response curve of a to-be-detected sample region after dimensionality reduction of characteristic bands is obtained, and a quality index is determined by training of a quality prediction model. The meat and meat products are subjected to abnormal product sorting on the basis of the quality prediction result, the vacancy of rapid nondestructive testing of the safety and nutritional quality of the meat and meat products in the prior art is filled, the quality of terminal selling products is guaranteed, and the use experience feeling of a user is improved.

The invention belongs to the technical field of crop cultivation, and particularly relates to a wide-narrow-row cultivation method for corn in a fruit forest. Wide-narrow row configuration is carried out according to environment characteristics such as illumination angles and illumination duration between fruit-bearing forests, so that the illumination duration is prolonged while the illumination angles are radiated on canopy leaves of corn plants. The planting density of the corn is reasonably set on the basis of a wide-narrow row planting mode, so that the air permeability and photosynthesis of crops in the fruit-bearing forest can be changed, the marginal effect of crop groups is reduced, and the biological competition is reduced, thereby effectively improving the yield and nutritional quality of the corn, and particularly realizing high quality and high yield of the silage corn in the walnut forest.

The invention belongs to the technical field of fruit tree cultivation and plant growth regulation, and particularly relates to a plant growth regulator containing 5-ALA and application of the plant growth regulator in prunus humilis planting. According to the method disclosed by the invention, the nutritional quality of fruits is remarkably improved by spraying a 100 mg / L 5-ALA solution on the whole cerasus humilis plant. Compared with clear water, the sugar content of the cerasus humilis fruits treated by the 5-ALA in the full ripening stage is increased by 44.01%, the acidity is reduced by 23.75%, the soluble solids are increased by 60.22%, and the flavor of the fruits is remarkably improved; meanwhile, the total calcium content of the fruits is increased by 30.22%, the water-soluble calcium content is increased by 91.12%, the pectin calcium content is reduced by 30.04%, and the active calcium content is increased by 50.74%; the content of soluble protein is increased by 30.98%, so that the acidity is reduced, and sugar, calcium and protein are synergistically improved.

The invention discloses application of an SlBRL2 gene in improvement of tomato fruit quality, and belongs to the technical field of plant genetic engineering. According to the invention, the gene SlBRL2 related to the tomato fruit quality is found, and the CDS sequence of the gene SlBRL2 is as shown in SEQ ID NO. 1. It is found for the first time that the knockout of the SlBRL2 gene can significantly improve the tomato fruit shape index, the fruit hardness, the soluble solid content, the total sugar content and the carotenoid content, the taste and the nutritional quality of tomatoes are improved while the storage resistance and the transportation resistance of the tomatoes are improved, and a new direction is provided for tomato germplasm breeding.

The invention provides an application of a peach transport protein PpSWEET11 in regulating and controlling the hexose content of fruits. According to the invention, the function of the PpSWEET11 gene is cloned and verified, and through overexpression of the PpSWEET11 in peach fruits and tomatoes, the glucose and fructose levels in an overexpression group are obviously increased compared with those in a control group, which indicates that the PpSWEET11 has a wide sugar transport function. The invention not only expounds the effect of the PpSWEET11 in the aspect of sugar accumulation and provides a key molecular insight in the aspect of improving sugar accumulation of peaches and other economically important fruit crops, but also can be applied to nutritional quality improvement and germplasm innovation of peach fruits.

The invention discloses a method for preparing live pig feed through mixed solid-state fermentation of feed rape and rapeseed meal. The method specifically comprises the following steps: harvesting feed rape from a full-bloom stage to a final bloom stage, adding rapeseed dregs, and uniformly mixing to obtain a fermentation substrate with the water content of 55-65%; spraying the compound enzyme bacterium preparation on the fermentation substrate, uniformly stirring, finally compacting by using a packer, sealing, packing and storing, and fermenting for 45 days; the compound enzyme bacterial preparation comprises a bacterial agent and an enzyme agent; the fungicide comprises lactobacillus plantarum, bacillus subtilis, saccharomyces cerevisiae and aspergillus niger; the enzyme agent is prepared from phytase, cellulase, hemicellulase, pectinase, tannase, xylanase and alpha-galactosidase. The feed rape and the rapeseed meal are subjected to mixed solid fermentation, so that the content of phytic acid, glucosinolate and crude fiber is greatly reduced, the content of crude protein is increased, and the nutritional quality of the feed is remarkably improved. The fermented feed is used for replacing part of corn, soybean meal and wheat bran, and the use amount of concentrated feed in live pig breeding is reduced.

The embodiment of the present invention discloses a method and device for comprehensive evaluation of the nutritional quality of shrimp. The present invention takes Litopenaeus vannamei in different aquaculture water environments (seawater, typical saline-alkali water, fresh water) as the research object, detects and analyzes the nutritional components such as water, ash, protein, fat, amino acids, fatty acids in its muscle, clarifies the differences in key nutritional index parameters of shrimp under different aquaculture water environments, uses multivariate statistical methods to screen key characteristic nutritional indicators of shrimp (protein, ash, essential amino acids, semi-essential amino acids, monounsaturated fatty acids and ω-6 unsaturated fatty acids), and establishes a comprehensive evaluation model for the nutritional quality of shrimp. It has been verified that the model has good accuracy and can effectively evaluate the nutritional quality of shrimp.

The invention relates to the technical field of animal feed, and discloses compound bacteria, a biological fermentation agent containing the compound bacteria, fermented brewer's grains and application of the compound bacteria, the biological fermentation agent and the fermented brewer's grains. The compound bacterium comprises aspergillus niger, bacillus subtilis and a pichia pastoris modified bacterium, the preservation number of the aspergillus niger is GDMCC (Graphics Digital Microorganisms for China Center for Culture Collection) No.64995, the preservation number of the bacillus subtilis is GDMCC No.64996, and the pichia pastoris modified bacterium is a gene modified bacterium P.pastoris GS115 / pGAPZ-NBLF-N. The invention further discloses a preparation method of the compound bacterium for preparing the compound bacterium, and the compound bacterium has the advantages that the preservation number of the aspergillus niger is GDMCC No.64995, the preservation number of the bacillus subtilis is GDMCC No.64995, and the preservation number of the bacillus subtilis is GDMCC No.64996. The biological leavening agent comprises compound bacteria and bran, and the fermented brewer's grains obtained through treatment of the biological leavening agent can improve the protein content, reduce cellulose, enhance the nutritional quality of animal feed, increase the resistance of animals and improve economic benefits.

The invention discloses a preparation method and application of low-GI whole wheat flour, and the preparation method comprises the following steps: step (1), grinding wheat to respectively obtain flour and wheat bran; (2) performing steam explosion modification treatment on wheat bran, and drying after the modification treatment is finished to obtain modified wheat bran; and (3) grinding the modified wheat bran into wheat bran powder, adding the wheat bran powder into the flour obtained in the step (1), and uniformly mixing to obtain the low-GI whole wheat flour. The low-GI whole wheat flour is used for making low-GI whole wheat food. The low-GI wholewheat food can solve the technical problems of low nutritional quality and poor sensory quality of the existing low-GI wholewheat food.

The invention provides a preparation method of a compound microbial agent and a pasture fermented feed, and belongs to the technical field of feed fermentation. The complex microbial inoculant disclosed by the invention comprises lactobacillus acidophilus, bacillus siamensis, bacillus amyloliquefaciens and pichia kluyveri. The lactobacillus acidophilus can produce acid and resist acid, and has better antibacterial performance; the bacillus siamensis can degrade lignin and reduce the content of neutral detergent fibers and acid detergent fibers in the fermented feed; the bacillus amyloliquefaciens produces cellulase and amylase with higher activity; the pichia kluyveri can increase the content of crude protein in the fermented feed and improve the nutritional performance of the feed. The four strains have a synergistic effect and jointly ferment forage feed, infectious microbes can be effectively inhibited, the fermented forage feed has excellent color, smell and texture, the palatability of the feed is improved, the appetite of animals is stimulated, and a good growth promoting effect is achieved; the fermented forage feed disclosed by the invention is high in nutritional quality and relatively high in feed utilization rate.

The invention discloses a mutant of a rice GDSL lipase gene OsHGZ1 and application of the mutant in increasing the zinc content in grains. According to the present invention, the mutant with the mutation of the 195-site amino acid of the OsHGZ1 is obtained through EMS mutagenesis, and the verification results show that the zinc content of the mutant grain is twice the zinc content of the wild type; the OsHGZ1 is an excellent gene which can be applied to cultivation of high-zinc rice grains. The invention has very important significance for improving the nutritional quality of rice and improving the dietary health of human beings.

The invention discloses a method for increasing the esterified carotenoid content of Chinese wolfberry. The method comprises the following steps: S1, picking Chinese wolfberry fruits; s2, on the day when the Chinese wolfberry fruits are picked, the Chinese wolfberry fruits are soaked in a melatonin aqueous solution for 15 min to 30 min, and the concentration of melatonin in the aqueous solution is 40 [mu] M to 60 [mu] M; s3, draining water after soaking, and performing breathable packaging and storage. The melatonin solution with proper concentration is adopted to soak the medlar fruits and then the medlar fruits are refrigerated and stored, the expression quantity of carotenoid esterifying enzyme genes in the medlar fruits is obviously higher, and the content of esterified carotenoids is also obviously higher, so that the loss of main bioactive components in the low-temperature storage period of the medlar fruits is avoided; the nutritional quality of the Chinese wolfberry fruits is guaranteed, the bright color of the Chinese wolfberry fruits can be maintained, and the commodity value of the Chinese wolfberry fruits is guaranteed.

The invention relates to the technical field of food processing, in particular to a chicken quality preservation treatment method based on sectional regulation, which is characterized in that chicken is pretreated by a composite biological preservative solution, and ice storage treatment and staged storage are combined, so that microbial growth and enzymatic activity of the chicken are effectively inhibited; fat oxidation and protein degradation are delayed, so that the chicken still keeps excellent quality in long-term storage; in the staged storage process, key indexes are monitored in real time or periodically, a threshold value comparison and stage switching mechanism is established, and accurate dynamic regulation and control of the staged modified atmosphere packaging environment under the condition of dynamic deterioration of the chicken quality are achieved. Through segmented regulation and control, juice loss, color deterioration and decay of the chicken in the storage process can be effectively prevented, so that the sensory quality and the nutritional quality of the chicken are maintained, and meanwhile, the gas utilization efficiency in the storage environment is also remarkably improved.

The disclosure relates generally to methods and systems for predicting a remaining shelf-life of a millet flour using data-driven approach. Conventional techniques for estimating the remaining shelf life of the millet flour are very limited and not effective. The methods and systems of the present disclosure employs a Long short-term memory (LSTM) network architecture-based model to predict the remaining shelf-life of the millet flour based on both the nutritional quality and the rancidity using the information of millet variant and days after milling of the grain. The LSTM network based model is trained on the training data obtained using the chemical reaction kinetic model from the input data comprising a peroxide content, and a fat acidity. The present disclosure predicts the remaining shelf-life of the millet flour in terms of both the remaining nutritional shelf-life and the remaining rancid shelf-life.

The invention relates to the technical field of molecular biology, in particular to a reference gene for Chinese olive functional gene expression analysis and application thereof. According to the invention, the reference gene RPN2B which is most stably expressed in fruits of different varieties (lines) of Chinese olives in different development and maturation periods is screened out, and in addition, two reference genes NIFS1 and RPS16 which are only second to the RPN2B are also screened out, so that the method can be used for expression analysis of nutritional quality or other functional genes of the fruits of the Chinese olives of different varieties (lines) in different development and maturation periods; the specificity, the stability and the accuracy of functional gene expression analysis data are remarkably improved, and powerful support is provided for Chinese olive functional gene expression analysis. The invention also provides a special detection primer for detecting the reference gene of the Chinese olive fruit, and the detection primer can quantify the expression quantity and function analysis of the auxiliary gene through fluorescence in the Chinese olive function research, and has high application value.

The application relates to the technical field of beef cattle breeding, and particularly discloses a compound preparation for promoting the feed intake, daily weight gain and improving the meat quality of beef cattle and application thereof, which is prepared from the following components in percentage by volume: 40% of micro-ecological preparation, 30% of hawthorn, 10% of medicated leaven, 10% of malt, 5% of areca nut and 5% of dried tangerine or orange peel; the compound preparation is prepared from microorganisms and multiple natural Chinese herbal medicines in a specific and scientific matching ratio; experiments prove that the compound preparation can increase the feed intake of beef cattle by 11.33%, increase the daily weight gain by 16.16%, and significantly shorten the breeding cycle; meanwhile, the contents of aspartic acid, threonine, glutamic acid, alanine, valine, isoleucine, leucine, tyrosine, phenylalanine, lysine, arginine and proline in the muscle are significantly increased, the nutritional quality and flavor taste of beef are effectively improved, the preparation is natural, residue-free and side-effect-free, the preparation method is simple, the cost is low, and the preparation has extremely high practical value and popularization prospect.

The invention discloses a method for improving the nutritional quality of wheat and reducing vomitoxin by combining cold plasma with lactic acid bacteria fermentation. The method comprises the following specific steps: (1) putting wheat grains polluted by DON into a reaction cavity of cold plasma equipment; (2) preparing a single or compound lactic acid bacteria starter; (3) mixing the wheat subjected to cold plasma treatment with a lactic acid bacteria leavening agent for fermentation; and (4) drying, grinding and sieving the fermented wheat to prepare the wheat flour meeting the standard. Through progressive cooperative treatment of cold plasma pretreatment and compound lactobacillus fermentation, the final degradation rate of DON reaches 91.04%, functional components (resistant starch reaches 13.71% and dietary fiber reaches 13.14%) are synchronously increased, and phytic acid (lowest to 0.42%) is greatly degraded to improve the bioavailability of mineral substances. Besides, the method can optimize the wheat processing performance, the prepared noodles are moderate in hardness, good in elasticity and stretch-proof, no chemical reagent is added in the whole process, collaborative optimization of efficient detoxification, nutrient enrichment and processing performance improvement is achieved, and a green and economical solution is provided for safe utilization of polluted wheat.

This invention discloses a chitinase-producing Bacillus albus A01 and its application in the fermentation of shrimp and crab solid waste. The chitinase-producing Bacillus albus is named... Bacillus albus A01, with accession number CCTCC: M 20252571; the 16S rDNA gene sequence of this chitinase-producing Bacillus albus strain A01 is shown in SEQ ID NO.1. The fermentation agent of this strain can effectively degrade the chitin content in shrimp and crab solid waste, and improve the nutritional value of shrimp and crab fermented powder through solid-state fermentation. This invention solves the problem of unsatisfactory fermentation effects of existing feed fermentation strains, and has great application potential for improving the feed nutritional quality of shrimp and crab fermented powder and developing feed resources.