160 results about "Tangerine peel extract" patented technology

The invention relates to a food composition with functions of tonifying the spleen and nourishing the stomach and a preparation method thereof. The food composition comprises the following raw materials by weight percent: 4-10% of dangshen extract, 4-10% of largehead atractylodes rhizome extract, 4-10% of semen coicis extract, 4-10% of lotus seed extract, 4-10% of tuckahoe extract, 4-10% of gordon euryale seed extract, 4-10% of Chinese yam extract, 4-10% of white hyacinth bean extract, 1-4% of dried tangerine peel extract, 10-30% of rice meal and 10-30% of glutinous rice meal. The food composition with functions of tonifying the spleen and nourishing the stomach has low cost, rich nutrition, the functions of tonifying the spleen and nourishing the stomach and accurate active component quantifying indexes, does not have any toxic or side effect, and is convenient to eat.

The invention discloses whitening and skin care essence with synergistic whitening effects and a preparation method thereof. The whitening and skin care essence comprises niacinamide, a whitening complex 1, a whitening complex 2, citrus peel extract and arbutin. The whitening and skin care essence utilizes synergistic raw materials, can inhibit tyrosinase activity and melanin transfer, can brighten skin color, can cooperate in various nodes in the whitening path and can realize safe, effective and stable whitening effects.

The invention belongs to the technical field of cigarette filter stick production and particularly to a cigarette blast bead tangerine peel-flavored essence and application of the same to cigarettes. The cigarette blast bead tangerine peel-flavored essence is composed of tangerine peel extract, acetic acid, sweet orange oil, maltol, citral, and glyceryl caprylate-caprate. The cigarette blast bead tangerine peel-flavored essence can be applied to preparing a tangerine peel-flavored cigarette blast bead. The tangerine peel-flavored cigarette blast bead can be applied to a filter stick to prepare blast bead cigarettes. According to the cigarette blast bead tangerine peel-flavored essence and the application of the same to the cigarettes and through combination with a relatively complete blast bead production process, cigarette blast bead products stable and uniform in quality can be obtained. When arranged inside a cigarette filter tip, the cigarette blast bead can well weaken irritancy of the cigarettes, improve and enrich the flavor of the cigarettes, and significantly improve the flavor richness, the sensory quality and the smoking enjoyment of the cigarettes. Therefore, the cigarette blast bead tangerine peel-flavored essence and the application of the same to the cigarettes are high in application value and generalization and application significance to design, development, production and marketing of blast bead cigarettes.

The invention discloses a corn oligopeptide powder buccal tablet and a preparation method thereof. The corn oligopeptide powder buccal tablet comprises the following components in part by weight: 25-3-5 parts of corn oligopeptide powder, 10-20 parts of hovenia acerba extract, 5-1-5 parts of kudzu root extract, 0.5-5 parts of dried tangerine peel extract, 0.5-5 parts of amomum extract, 0.5-5 parts of ginger extract, 0.5-5 parts of poria extract, 0.1-0.-5 parts of food additive, 1.5-2.-5 parts of mint extract, 35-4-5 parts of white granulated sugar and 0.1-1 part of anti-caking agent. The preparation method comprises the following steps: crushing raw materials, softening the raw materials, granulating by a wet method, drying, sieving, finishing granules, adding the anti-caking agent, tabletting and packaging. The corn oligopeptide powder buccal tablet is scientific and reasonable in formulation, all-around in nutritional and health-care functions of protecting the liver, relieving alcoholism, strengthening the spleen and the stomach and reducing the blood pressure and the blood lipid, good in palatability, safe and non-toxic; and the preparation method is simple and feasible and low in cost.

The invention discloses an antibacterial finish method for a blended cotton fabric. The antibacterial finish method comprises the following steps: (1) grinding sabina chinensis, extracting the sabina chinensis in ethanol aqueous solution after grinding, performing centrifugal separation after extracting, and concentrating the supernatant, thereby obtaining a sabina chinensis extract; (2) additionally taking green tangerine peel, drying and grinding the green tangerine peel, extracting the green tangerine peel in the ethanol aqueous solution, performing centrifugal separation after extracting, and concentrating the supernatant, thereby obtaining the green tangerine peel extract; (3) taking chitosan, nanometer titania, the sabina chinensis extract, the green tangerine peel extract and water according to the weight, dissolving the chitosan, nanometer titania, sabina chinensis extract and green tangerine peel extract by using water, and stirring to be uniform after dissolving; and (4) immersing a blended cotton fabric in the mixed solution, soaking, soaking twice and padding twice, and drying, thereby obtaining the antibacterial blended cotton fabric. The prepared blended cotton fabric has high antibacterial performance.

The invention relates to feed for supplying additive food elements, in particular to a natural vegetable feed additive for improving the immunity of prawns. Apart from corn powder, the feed additive for the prawns also comprises the following components in portion by mass (dry weight): 5 to 30 portions of shorthorned epimedium P.E, 6 to 20 portions of eucommia bark P. E., 1 to 10 portions of cyanotis arachnoides P.E, 5 to 12 portions of dandelion P.E, 8 to 18 portions of tangerine peel extract, 4 to 20 portions of Chinese hawthorn P.E., and 7 to 15 portions of radix glycyrrhizae P.E. The feed additive can improve the nonspecific immunity of the prawns, adjust the metabolism of organic bodies, improve anti-stress performance and achieve a disease-prevention and growth-promotion effect. The feed additive is stable in property, strong in palatability, convenient in use and free from drug residue after long-term use as well as toxic and side effect and environmental pollution.

The invention relates to a protein peptide composite nutrient fluid microsphere for anti-inebriation and a method for preparing the same. The protein peptide composite nutrient fluid microsphere and the method are characterized in that the method adopts vegetable protein peptide matched with water soluble extracts of hawthorn, radish, licorice and orange peel to prepare the protein peptide composite nutrient fluid according to the weight percentage that the protein peptide is between 60 and 80 percent and the extracts of the hawthorn, the radish, the licorice and the orange peel are between 5 and 10 percent respectively, and then a microcapsule forming technique is adopted to prepare the protein peptide composite nutrient fluid microsphere. The vegetable protein peptide comprises the protein peptide components generated by proteolysis extracted from one or more farm products including peanut, soybean, corn, and the like. The extracts of the hawthorn, the radish, the licorice and the orange peel can be hydrosolvent extracts, and also can be organic solvent extracts. The protein peptide composite nutrient fluid microsphere adopts green foods as raw materials for anti-inebriation, is environment-friendly and harmless to a human body, adopts microencapsulation technique so that the protein peptide is released slowly in the human body, has good anti-inebriation and sobering effects, and can properly improve the function of the human body and enhance the immunity.

The invention discloses a method for preparing nano-silver particles by adopting a dried orange peel extracting solution. The method comprises the following steps that dried tangerine peels are cleaned, dried, crushed and sieved to obtain dried orange peel powder, then pure water is added, and heating and soaking, ultrasonic treatment, natural cooling and filtering are carried out to obtain the dried tangerine peel extracting solution; the dried tangerine peel extracting solution is mixed with the pure water, heating in a water bath is carried out, and then an AgNO 3 solution is added for uniform stirring; and finally, a hypochlorite solution is added, uniform mixing is carried out, then reaction at a constant temperature is carried out, and the green synthetic nano-silver particles are obtained after the reaction carried out for a period of time. According to the method, the dried tangerine peel extracting solution is taken as a reducing agent and a stabilizer to prepare and obtain the nano-silver particles, a part of effective components in the dried tangerine peels are adsorbed to the surface of nano-silver, so that the stability of the nano-silver is improved, and the potentialapplication function and value of the nano-silver particles prepared by using the method in the fields of medical treatment, environmental protection and the like are greatly increased; and meanwhile, the mode that sodium hypochlorite is added as a control agent in the synthesis process is put forward for the first time, and the synthesis reaction time is effectively shortened.

The invention discloses a dried tangerine peel extract preparation method, wherein the dried tangerine peel extract is prepared by using dried tangerine peel as a raw material through cellulase and pectinase combined enzymolysis. The invention further discloses the dried tangerine peel extract prepared by using the method and applications of the dried tangerine peel extract. According to the present invention, by using the cellulase and pectinase combined enzymolysis method, the characteristics of high efficiency, simple and convenient operation, mild reaction condition and the like can be provided; after the enzymolysis reaction, ethanol is used as a solvent to extract; and the method has advantages of high yield, safety, effectiveness and solvent recovery, and is suitable for industrial production.

The invention discloses a coix seed-lotus leaf solid drink which belongs to the technical field of medicinal food and can improve physique of the phlegm-damp population. The solid drink comprises the following components by weight: 40-60 parts of haw extract, 20-50 parts of tangerine peel extract, 2-4 parts of coix seed extract, 1-3 parts of lotus leaf extract, 2-5 parts of semen cassia extract, 30-50 parts of corn oligoisomaltose, and 40-80 parts of corn maltodextrin. The invention adopts plants with homology of medicine and food as source for preparing the solid drink, has no harm to human body, has good taste, can be drunk immediately after infusion, is convenient for drinking, can improve physique of the phlegm-damp population, and is suitable for long-term drinking by people.

The invention discloses a skin-core aromatized filter rod and a preparation method thereof. The skin-core aromatized filter rod comprises a filter rod body formed by bonding cellosilk bundles througha plasticizer. The skin-core aromatized filter rod is characterized in that a skin-core aromatic thread core is wrapped in the filter rod body and composed of an aromatic thread core layer containingessence perfume and a polymer skin layer wrapped on the aromatic thread core layer. Aromatic threads in the aromatic thread core layer are cotton threads, the essence perfume includes menthol, tangerine peel extract, tree moss extract, alfalfa extract and maple extract, and the polymer skin layer is prepared from a mixture of polycaprolactone and polyethylene glycol. Preservation time of the essence perfume in the filter rod can be increased, and release of aromatic ingredients during cigarette smoking can be prevented from being affected by missing of aroma before cigarette smoking. The essence perfume different in property can be added according to needs to meet different needs on aroma style of cigarettes.

The invention discloses a composite premix for the later stage of growing-fattening pigs. The composite premix comprises cynomorium songaricum extract and preferably comprises cysteamine hydrochloride, guanidinoacetic acid, licorice root extract, acanthopanax root extract, peppermint extract, dried tangerine peel extract, Chinese magnoliavine fruit extract, capsanthin extract and rosemary extract. The invention discloses composite premix feed for the late stage of growing-fattening pigs and the feed is prepared from the composite premix. The composite premix and the composite premix feed for the later stage of growing-fattening pigs can prevent intestinal and respiratory diseases in the later stage of growing-fattening pigs, improve human immunity, prevent diarrhea in the later stage of growing-fattening pigs, increase a yield and a survival rate in the later stage of growing-fattening pigs and improve pig carcass quality, feed conversion and a meat production cost.

The invention discloses a novel stomach invigorating tangerine peel powder and a preparation method and an application of the novel stomach invigorating tangerine peel powder; the novel stomach invigorating tangerine peel powder comprises the components by mass percent: 5-10% of tangerine peel extract powder, 10-20% of pomegranate bark charcoal powder and 70-85% of tangerine peel charcoal powder. The tangerine peel extract powder is tangerine peel alcohol extract, and the novel stomach invigorating tangerine peel powder is prepared by concentrating the tangerine peel extract powder, adding a right amount of carrier into the concentrated tangerine peel extract powder, mixing, drying at low temperature and crushing into powder. The obtained powder contains the tangerine peel extract within the mass fraction range of 0.1-0.5g tangerine peel extract / g powder; the best mass fraction of the tangerine peel extract powder is 0.5g tangerine peel extract / g powder; the pomegranate bark charcoal powder is pomegranate bark calcined charcoal powder; and the tangerine peel charcoal powder is residue calcined charcoal powder obtained after tangerine peel is extracted by alcohol. The novel stomach invigorating tangerine peel powder is suitable for relieving or preventing the symptoms such as gastrointestinal discomfort, decreased intake, dyspepsia and the like caused by acute and chronic gastroenteritis of pigs, and can be used for a long time as feed additive.

The invention provides whitening lotion with a synergistic whitening effect. The lotion is characterized by being prepared from the following components in percentage by mass: 1-3 percent of nicotinamide, 1-4 percent of whitening compound, 0.5-1.5 percent of tangerine peel extract, 0.1-0.5 percent of arbutin, 0.1-2 percent of 1-methylhydantoin-2-imide and 89-97 percent of cosmetic auxiliary matrix. The invention further provides a method for preparing the whitening lotion with the synergistic whitening effect. The lotion can be used for avoiding the phenomenon that skin receives a negative feedback signal (melanin is reduced, and is required to produce massively) since the signal of a certain whitening node is accidentally reinforced, synergistically highlighting the whitening effect on several whitening key points, and enabling the human skin system to harmoniously reduce generation and transfer of melanin by controlling nodes on the whole whitening chain, so that the skin whitening and brightening effect is achieved.

A health-care product for protecting liver from alcohol damage and nourishing stomach is prepared from the following raw materials in parts by weight: 5-50 parts of kudzuvine flower, 5-50 parts of kudzuvine root, 5-50 parts of artemisia capillaris, 5-50 parts of pollen, 1-10 parts of semen hoveniae extract, 1-10 parts of purple perilla extract, 1-10 parts of orange peel extract and 1-10 parts of talcum powder. The health-care product keeps the natural activity of all formulation raw materials, thereby achieving a remarkable anti-alcohol effect; while the effects of alcohol are dispelled, visceral organs, such as liver and stomach, are protected from damage caused by drinking; the anti-alcohol capability of the human body is enhanced, and the alcohol tolerance is improved. The product can be not only used in drinking emergency but also taken for a long time, has the effects of protecting the liver and nourishing the stomach, as well as reducing blood fat, blood pressure and blood sugar, losing weight and beautifying, can effectively regulate the navel and stomach functions, strengthen the organic immunity and delaying senescence, and has very good health-care effects on dyspepsia, constipation and the like.

The invention discloses a food flavor enhancer with a spicy flavor and a preparation method thereof, which is prepared from the following raw materials in parts by weight: 50-60 baker's yeast, 0.1-0.2 neutral protease, 0.1-0.2 chitinase, and 25 minced fish ‑28, potato protein powder 14‑16, mushroom extract 0.01‑0.02, tempeh powder 2‑3, seabuckthorn seed oil 0.4‑0.5, sucrose fatty acid ester 0.1‑0.2, August melon puree 3‑4, cauliflower powder 2‑3 , Toon Leaf 7‑8, Okra 5‑6, Pea Powder 13‑15, Arrowroot Powder 8‑10, Chicken Sauce 5‑6, Orange Peel Extract 0.1‑0.2, Pleurotus eryngii Powder 14‑16, Chili Powder 0.2‑0.3 , Sesame paste 2‑3. The invention can improve the flavor and mouthfeel of food, increase people's appetite, improve the processing performance of food, remove bad smell and prolong the shelf life of food.

The present invention provides flavor yogurt containing orange peels and orange peel extract and a preparation method thereof, and belongs to the technical field of flavor yogurt and preparation technology thereof. The flavor yogurt is prepared from fresh cow milk, medicinal and edible homogeny traditional Chinese medicines, orange peels, orange peel extract and beta-cyclodextrin. The orange peels and the orange peel extract are added into fermented milk raw materials, which can make the fermented milk stronger in flavor and higher in nutritional quality; meanwhile, powder formulations, liquid formulations or granular formulations prepared by combining one or a variety of Chinese wolfberry fruits, Chinese yam, haws, canavalia, pawpaws, jujubes, mulberries, lotus seeds, Chinese olive, fructus momordicae are added into the fermented milk before fermentation, giving the fermented milk unique aroma, mouthfeel and color and luster, making up the defect that the fermented milk is single in function, mutually complementing nutrient components of the fermented milk with unique pharmacological components of the medicinal and edible homogeny traditional Chinese medicines, and making the fermented milk has more nutritional and health-care value to meet different needs of people through effective combinations.

The invention discloses a fresh-keeping film and a preparation method thereof. The technical scheme is that the fresh-keeping film is prepared from raw materials in parts by mass as follows: 90-99 parts of a polymeric base material, 1-5 parts of visible-light response type photocatalyst and 1-5 parts of chitosan with honeysuckle flower extract and tangerine peel extract supported. The fresh-keeping film has the following advantages: the fresh-keeping film is long in bacteriostatic and fresh-keeping time, and can inhibit breeding of various bacteria and fungi; the fresh-keeping film is particularly applicable to food storage in a refrigerator and has an adaptive long-term fresh keeping function against air movement and sundry bacteria entering due to opening and closing of refrigerator doors; the raw materials for preparing the fresh-keeping film are easily available, high in biosafety, green and healthy; the preparation process is simple, the cost is low, and industrial production is facilitated.

The invention discloses a method for preparing a health food by polypeptide factor and Chinese herb extracts. The health food is characterized by comprising the following components and materials by weight: 1-3kg of pig-spleen polypeptide, 6-16kg of a liquorice, hawthorn and tangerine peel extract, 180-210kg of oligomeric polysaccharide and the balance being water. The preparation process comprises the following steps: (1) preparing the hawthorn, the liquorice and the tangerine peel extract; (2) preparing the pig-spleen polypeptide; (3) batching; and (4) filtering, sterilizing, drying and packaging. The method has the advantages that the synergistic effect the pig-spleen transfer factor, the oligomeric polysaccharide and certain edible traditional Chinese medicines in many aspects is comprehensively utilized, the production process is reasonably designed, and more bioactive-substance functional foods are industrialized, so that the health food has better effects of enhancing the defense function of the organism of a human body, adjusting the physiological rhythm, preventing the disease and promoting rehabilitation, and is balanced in nutrition, good in absorption, good in taste, long in quality guarantee period and low in price so as to have wide market demand and large development potential.

The present invention relates to processing technology of dried tangerine peel extract without bitter taste, and the processing technology includes the following steps: (1) extraction; (2) enzymatic hydrolysis; (3) filtration and centrifugation; (4) purification and dialysis; (5) macroporous adsorption resin elution; (6) vacuum concentration; (7) enzymatic hydrolysis to remove bitter taste. The processing technology has the following advantages: 1) compared with the traditional extraction method, enzymatic hydrolysis greatly improves the yield of the dried tangerine peel extract; and the obtained dried tangerine peel extract is free of bitter taste, good in taste and fresh and pleasant in aroma; 3) the processing technology is simple in operation and suitable for industrial production; 4) the processing technology does not use other organic solvents besides alcohol and does not cause environmental pollution so that the processing technology is environment friendly; and 5) the processing technology needs no special equipment, and is good in production safety.

The invention discloses Chinese traditional herb feed for reducing egg cholesterol, and the components of the Chinese traditional herb feed are prepared from conventional basal feed and a Chinese medicinal herbs additive, and the Chinese medicinal herbs additive is prepared from the following components in parts by weight: 5 to 15 parts of tangerine peel extract, 5 to 15 parts of hawthorn extract, 2 to 12 parts of schisandra extract, 2 to 12 parts of acanthopanax senticosus extract, 2 to 12 parts of cassia seed extract, 2 to 12 parts of rhubarb extract, 2 to 12 parts of langehead atractylodes rhizome extract, 2 to 12 parts of pilose asiabell root extract, 1 to 6 parts of gynostemma extract, 8 to 20 parts of pine needle powder and 5 to 15 parts of garlic powder; according to the Chinese traditional herb feed for reducing the egg cholesterol provided by the invention, a formula contains no hormones and a chemical synthesis drug, is safe, non-toxic, green and environmental friendly; the nutrition of the feed is comprehensive; the cost is low, and a experimental result shows that the Chinese traditional herb feed can obviously reduce the content of triglyceride and the total cholesterol in an egg; the lecithin-cholesterol acyltransferase activity in chicken serum can be obviously improved, and the content of high density lipoprotein cholesterol can be increased, and the HDL-C / TC value can be increased.

The invention discloses an aquatic feed vegetable adhesive and a preparation method thereof. The aquatic feed vegetable adhesive is characterized by being prepared from the following raw materials in parts by weight: 10-15 parts of a kelp extract, 2-4 parts of a dried tangerine peel extract, 1-3 parts of a compound Chinese herbal medicine, 2-4 parts of alpha-starch and 5-8 parts of bentonite. The adhesive has the characteristics of simple process, low cost and appropriate adhesiveness, and can increase nutritional ingredients of in a bait material, improve the palatability of a feed, promote in vivo nutrition metabolism and improve the anti-stress capability of fishes.

The invention belongs to the technical field of daily chemical industry and particularly discloses shampoo with plant amino acid and a preparation method thereof. The shampoo with the plant amino acidcontains the following components in percent by weight: 10-40% of amino-acid surface active agent, 5-15% of auxiliary surface active agent, 0.2-3% of conditioning agent, 0-4% of thickening agent, 0.1-5% of tangerine peel extract, 0-5% of polyol, 0.02-0.5% of preservative and the balance of water; the weight percent of flavone in the tangerine peel extract is 70-95%. The shampoo and the preparation method disclosed by the invention have the beneficial effects that by adoption of the amino-acid surface active agent, the mild and skin-friendly effects are achieved, stimulation and injury to thescalp are greatly reduced, and simultaneously the defects of poor decontamination and unstable foam in the traditional amino-acid surface active agent due to poor surface activity are overcome; in addition, the tangerine peel extract is adopted as a functional component, the components are relatively simple, and the materials are easily obtained, so that the obtained hair-washing product is mild in property, can achieve the effects of resisting inflammation and bacteria, soothing the scalp and relieving the injury of the external environment to the scalp, and simultaneously has the effect of nourishing and nursing the hair so as to keep the washed hair soft and smooth.

The invention belongs to the technical field of cosmetics and particularly discloses a use of tangerine peel active extract. The tangerine peel active extract is added to a cosmetic product to prepare a sebum-control cosmetic product capable of inhibiting skin sebum secretion. The sebum-control cosmetic product containing the tangerine peel extract can inhibit the skin from producing mass sebum, can keep skin dry and cool instantly and constantly, can reduce sebum secretion and control skin sebum secretion for long time, is mild, and has lasting effect. The sebum-control cosmetic product also has moisturizing and skin barrier restoring effects and can condition and remediate oily skin and combination skin.

The invention belongs to the technical field of facial soaps and in particular discloses an amino acid soap containing tangerine peel extract and a preparation method of the amino acid soap. The aminoacid soap containing tangerine peel extract contains 30-40% of N-acylamino acid, 18-25% of triethanolamine, 6-12% of ethanol, 5-10% of polyhydric alcohols, 1-2% of sucrose, 2-5% of tangerine peel extract and the balance of water. The weight content of flavones in the tangerine peel extract is 70-95%. The amino acid surfactant and the tangerine peel extract are taken as main ingredients, the composition is simple, the materials are readily available, and the prepared cleansing product is mild in nature, has obvious effects of resisting allergy and diminishing inflammation, moisturizing and repairing and soothing skin, is particularly suitable for the crowd having sensitive skin and impaired skin barrier, and has a certain effect of repairing the sunburned skin.

The invention discloses a plant-derived preservative composition, a preparation method and application thereof, and belongs to the technical field of preservatives. The preservative composition is composed of cassia bark extract, cassia seed extract and orange peel extract. The composition has a preservative effect on molds, Escherichia coli, Staphylococcus aureus, etc. The preservative composition is natural in components, free of toxic and side effects, broad in bacteriostasis spectrum, good in preservative effect, simple in preparation, low in production cost, capable of being applied to food preservation and obvious in preservative effect especially applied to Cantonese-style mooncakes.

The invention relates to an ecological special fertilizer for tangerine, belonging to the field of resource environment protecting ecological fertilizer and production thereof. According to the technical scheme, the fertilizer is prepared from the following main raw materials: fresh animal bones, animal furs, tangerine peel extract, plant oil bran cake, longan polysaccharide extract, straws, quick lime and the like, and is especially used in root fertilizing or topdressing of tangerines, and is complete ecological fertilizer. Different from other conventional organic fertilizer and compound fertilizer, the yield of tangerines can be increased by 20 percent and above, the sweetness of tangerines can be improved by 30-40 percent, and the content of organic matters in soil can be increased, beneficial microorganisms which can be easily absorbed by plants in soil can be increased, plant diseases and insect pests can be avoided, and current soil caking and water and soil loss caused by applying fertilizer can be improved.

The invention discloses a tangerine peel extract feed additive and a preparation method thereof, and a preparation is formed by performing multiple circulating extraction on tangerine peel, and then uniformly mixing with a carrier. The preparation method comprises the following steps: step 1) performing preliminary extraction on thalli of the tangerine peel; and step 2) performing secondary circulating extraction on remains after the extraction in the step 1), performing spray-drying treatment on the obtained liquid extract, and then uniformly mixing with the carrier for forming the tangerine peel extract feed additive. The tangerine peel extract feed additive has the effects of regulating qi-flowing for strengthening spleen, eliminating dampness, dissipating phlegm, promoting feed digestion, preventing and treating the respiratory diseases of animals and poultry and reducing the incidence rate of the respiratory diseases, and can be applied in the preparation process of animal feed additives.

The invention provides a livestock feed additive capable of improving the nonspecific immunity of livestock. The livestock feed additive comprises a plant extract, especially a mixture of a yucca shidigero extract, a pilose asiabell root extract, a medicated leaven extract, a thymus serpyllum extract and a tangerine peel extract. Through the addition of vitamins and feed additives in the livestock feed, the immunity and the growth of piglets can be effectively promoted, the pathogen reproduction is inhibited, the antibiotic use is reduced, and the pig raising level is improved.