CN109170130A - The method that solid state fermentation aquatic products leftover bits and pieces prepares fish meal - Google Patents

The method that solid state fermentation aquatic products leftover bits and pieces prepares fish meal Download PDF

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CN109170130A
CN109170130A CN201810896870.XA CN201810896870A CN109170130A CN 109170130 A CN109170130 A CN 109170130A CN 201810896870 A CN201810896870 A CN 201810896870A CN 109170130 A CN109170130 A CN 109170130A
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fish meal
aquatic products
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张鹰炯
王春利
王志高
张飞
罗红宇
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Zhejiang Jingwei Marine Biological Technology Co Ltd
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Abstract

The invention discloses the methods that solid state fermentation aquatic products leftover bits and pieces prepares fish meal; fish meal is prepared using microbe fermentation method, protective agent potassium sorbate and (S)-(+) -3- (1- naphthoxy) -1- phenyl-1-propanol is added in microorganism Mixed Microbes powder preparation process;Fermentation process are as follows: be divided in fermentation medium in the fermentation tray sterilized, fermented and cultured primary surface covers sterilized wet gauze in tray, tray is placed in the shelf top fermentation in sterilized solid fermentation room again, contains (Z) -3- hexenol and riboflavin in fermentation medium.The utility model has the advantages that the present invention ensure that lower cost using aquatic products leftover bits and pieces as raw material, using Production by Microorganism Fermentation fish meal, the thermophilic digestion of traditional diamond-making technique is avoided, can effectively avoid the nutrient loss in fish meal and is destroyed;And the fish meal of this method preparation has anti-bacteria and anti-virus, the high advantage of digestibility.

Description

The method that solid state fermentation aquatic products leftover bits and pieces prepares fish meal
Technical field
The present invention relates to technical field of aquatic production, the method for preparing fish meal more particularly, to solid state fermentation aquatic products leftover bits and pieces.
Background technique
Fish meal is the primary raw material of high-protein feed, it is with the aquatic livestocks such as fish, shrimp, crab or aquatic products processing waste For raw material, through de-oiling, drying, crushing and the powdery or granular product obtained.It is at full speed with culture fishery and fishery Development, the demand of aquatic feeds albumen are also increasing.High-quality fish meal, which has, can promote the aquatic livestocks such as fish, shrimp to Gao Ying Being absorbed and utilized for substance, and then the growth and breeding of promotion fish, shrimp etc. are supported, occupies superiority in current aquatic feeds.
With the rapid development of culture fishery, the demand of forage protein is also increasing.Especially high-quality fish meal, because It may advantageously facilitate the aquatic livestocks such as fish, shrimp and high nutrient be absorbed and utilized, the growth and breeding of stimulation fish, shrimp etc., mesh Its preceding effect in aquatic feeds is that other protein sources cannot compare.Fish meal is with the aquatic livestocks such as fish, shrimp, crab or aquatic products Processing waste is made of Raw material processing, and can produce during processing of aquatic products every year a large amount of such as fish head, fish-skin, fishes The leftover bits and pieces such as bone, air bladder, shrimp shell, crab shell, these leftover bits and pieces account for about the 40-55% of raw material fish, thick mostly as feedstuff It puts processing or directly abandons, not only waste of resource, also pollution environment.And use these leftover bits and pieces as fish meal raw materials for production, not only It economizes on resources, also helps environmental protection, have a good application prospect.
The traditional processing mode of fish meal is dry and wet, and dry method fish meal is in since long-time high temperature drying makes fish meal coking Brown destroys the nutritional ingredient of fish meal, reduces the nutritive value of fish meal;Wet process fish meal is be easy to cause in process of production such as trip The loss of the nutritional ingredients such as isolated amino acid, water soluble protein reduces the nutritive value of fish meal.
In order to solve deficiency present in the dry and wet processing technology of current traditional fish meal, need to seek a kind of complete The new method for being capable of providing high-quality fish meal.
The prior art such as Authorization Notice No. is the Chinese invention patent of 104041710 B of CN, discloses a kind of fish meal small peptide The preparation method of feed: by commercially available poor quality fish meal, molasses, brown sugar or glucose, water, microbial protease, lactic acid bacteria culturers liquid With yeast seeds liquid hybrid modulation at liquid fermentation medium, in 20-70 DEG C of condition, liquid fermentation digests 2-120h next time, Fish meal protein small peptide liquid is made;By fish meal protein small peptide liquid, corn flour and alfalfa meal hybrid modulation at solid fermentation culture medium, Secondary solid state fermentation digests 6-360h under the conditions of 10-50 DEG C, and anti-nutritional factors can not only be eliminated by being made, and kills the micro- life of cause of disease Object, but also small peptide, lactic acid, Yeast protein and probiotics abundant are generated, cause stink to eliminate, shows raw meat perfume (or spice) tart flavour, energy Livestock and poultry feed intake is enough improved, promotes piglet growth, improves the fish meal small peptide feed of milking sow lactation amount.However, this method is former Expect at high cost.
Summary of the invention
The purpose of the present invention is to provide a kind of method that solid state fermentation aquatic products leftover bits and pieces prepares fish meal, this method utilizes water Heel is given birth to as raw material, lower cost is ensure that, using Production by Microorganism Fermentation fish meal, avoids traditional diamond-making technique Thermophilic digestion can effectively avoid the nutrient loss in fish meal and be destroyed;And the fish meal of this method preparation has antibacterial It is antiviral, the high advantage of digestibility.
The present invention in background technique aiming at the problem that mentioning, the technical solution taken are as follows:
The present invention is purchased from the source Zhejiang Lv Kang Bioisystech Co., Ltd with strain.
The method that solid state fermentation aquatic products leftover bits and pieces prepares fish meal, includes the following steps:
S1. ocean rhodotorula bacterium and bacillus subtilis are respectively placed on potato sugar agar medium and carry out inclined-plane culture; It will obtain the ocean rhodotorula bacterium after inclined-plane culture and bacillus subtilis be inoculated in ocean rhodotorula bacterium and bacillus subtilis Strain bottle culture medium expand it is numerous, ocean rhodotorula bacterium and bacillus subtilis seed bottle bacterium solution according to volume ratio 2-4:1-3, With 5-7% inoculum concentration inoculation fermentation bottle mixed culture, after the completion of culture, centrifugation takes precipitating, and 40-50 DEG C of drying grinds to obtain ocean Rhodotorula sp-bacillus subtilis Mixed Microbes powder;Ocean rhodotorula bacterium rich in beta glucan, manna oligosacchride, active peptides and Astaxanthin isoreactivity substance, can provide abundant nutriment for fermenting raw materials, at the same active peptides be able to suppress inflammation and Microorganism infection is resisted, is conducive to just build the culture medium system of healthy harmony at fermentation initial stage, to improve fermentation efficiency;It is withered Careless bacillus can improve micro-ecological environment, promote beneficial microbe breeding, improve body's immunity;Can also degrade fish meal In anti-nutrient molecule, reduce animal intestinal tract in chyme viscosity, reduce enteron aisle in poisonous and harmful corrupt substance generation, reduce pair The damage of intestinal wall and the pollution of environment, improve the digestive utilization ratio of nutriment;
S2. fresh aquatic product leftovers are rubbed, nutrients is added to mix, obtain fermentation medium;
S3. fermented and cultured step S2 obtained is based on 115-130 DEG C of sterilizing 20-30min;
S4. the fermentation medium after sterilizing that step S3 is obtained is cooled to room temperature, the ocean for then accessing step S1 preparation is red Saccharomycete-bacillus subtilis Mixed Microbes powder, stirs and evenly mixs;
S5. the fermentation medium that step S4 is obtained is fermented in following manner: fermentation medium, which is divided in, have been sterilized It ferments in tray, with a thickness of 4-8cm, fermented and cultured primary surface covers sterilized wet gauze in tray, then tray is set for charging Shelf top fermentation in sterilized solid fermentation room, control environment temperature is at 28-30 DEG C, fermentation time 30-100h;
S6. tunning is concentrated fermentation ends through dry, obtains and a kind of utilizes the best in quality of aquatic product leftovers preparation Fish meal product.
It is skimmed milk 8-10%, Huang according to mass percent preferably, protective agent is added during fermented by mixed bacterium Virgin rubber 5-6%, trehalose 2-4%, potassium sorbate 0.6-1.2% and (S)-(+) -3- (1- naphthoxy) -1- phenyl-1-propanol 0.001-0.003%;One of potassium sorbate and the special presence of (S)-(+) -3- (1- naphthoxy) -1- phenyl-1-propanol can promote Into the growth and breeding of fermenting microbe, harmful bacteria is inhibited to infect, creates good environment for microorganism fungus kind fermentation;Be conducive to Microorganism fungus kind is promoted to secrete various organized enzymes, it can be subsequent original that these enzymes, which have, which to be inhibited inflammation and resist pathogenic infection, Material fermentation provides safe and reliable environment, fermentation efficiency is improved, while improving anti-bacteria and anti-virus effect of tunning, as feeding Material ingredient can enhance animal immunizing power;Two stability for being conducive to reinforce microorganism mixed bacteria liquid, delay it to occur rotten Time improves its enzyme activity retention rate.
Preferably, nutrients is glucose, mixture composed by frerrous chloride and dipotassium hydrogen phosphate in step S2;Battalion The quality for supporting object accounts for fermentation medium gross mass percentage and is respectively as follows: glucose 0.01-5%, frerrous chloride 0.01-5%, phosphoric acid hydrogen Dipotassium 0.01-5%.
Preferably, (Z)-of culture medium weight 0.001-0.003% is added before fermenting in step S5 in the fermentation medium The riboflavin of 3- hexenol and 0.002-0.003%;(Z) -3- hexenol and riboflavin being capable of microorganism fungus kinds in regulation culture base Metabolic mechanism, so that composite flora is metabolized out the ingredients such as more polysaccharide, amino acid by proliferation function and synergistic effect, improve The nutrition of tunning is balanced, and the raising of the metaboilic level of microorganism is then conducive to improve fermentation rate;On the other hand can increase The active site for adding microbial protease and substrate-function in culture medium improves the affinity of enzyme-to-substrate, accelerates Substrate hydrolysis At small-molecule substance, gained tunning advantageously reduces the digestion and absorption that feed coefficient improves feed as forage protein source Rate.
Compared with the prior art, the advantages of the present invention are as follows: 1) present invention using aquatic products leftover bits and pieces as the raw material of fish meal, It ensure that lower cost, using Production by Microorganism Fermentation fish meal, avoid the thermophilic digestion of traditional diamond-making technique, it can be effective The nutrient loss avoided in fish meal and be destroyed, improve the quality of fish meal;2) protection is added in fermented by mixed bacterium Agent potassium sorbate and (S)-(+) -3- (1- naphthoxy) -1- phenyl-1-propanol promote microorganism fungus kind to secrete various organized enzymes, this A little enzymes, which have, to be inhibited inflammation and resists pathogenic infection, and safe and reliable environment can be provided for subsequent fermenting raw materials, improves hair Ferment efficiency, while anti-bacteria and anti-virus effect of tunning is improved, animal immunizing power can be enhanced as feed ingredient;It also helps The stability for reinforcing microorganism mixed bacteria liquid delays it that the rotten time occurs, improves its enzyme activity retention rate;3) in fermented and cultured (Z) -3- hexenol and riboflavin are added in base, can in regulation culture base microorganism fungus kind metabolic mechanism, make composite flora The ingredients such as more polysaccharide, amino acid are metabolized out by proliferation function and synergistic effect, the nutrition for improving tunning is balanced, and The metaboilic level raising of microorganism is then conducive to improve fermentation rate;On the other hand it can increase microbial protease in culture medium With the active site of substrate-function, the affinity of enzyme-to-substrate is improved, accelerates Substrate hydrolysis into small-molecule substance, gained fermentation produces Object advantageously reduces the digestibility that feed coefficient improves feed as forage protein source.
Specific embodiment
The present invention program is described further below by embodiment:
Embodiment 1:
The method that solid state fermentation aquatic products leftover bits and pieces prepares fish meal, includes the following steps:
(1) ocean rhodotorula bacterium and bacillus subtilis are respectively placed on potato sugar agar medium and carry out inclined-plane culture; It will obtain the ocean rhodotorula bacterium after inclined-plane culture and bacillus subtilis be inoculated in ocean rhodotorula bacterium and bacillus subtilis Strain bottle culture medium expand it is numerous, ocean rhodotorula bacterium and bacillus subtilis seed bottle bacterium solution according to volume ratio 2:1, with 5% inoculum concentration inoculation fermentation bottle mixed culture, after the completion of culture, centrifugation takes precipitating, and 40 DEG C of drying grind to obtain ocean rhodotorula Bacterium-bacillus subtilis Mixed Microbes powder;Ocean rhodotorula bacterium is rich in beta glucan, manna oligosacchride, active peptides and astaxanthin Isoreactivity substance can provide abundant nutriment for fermenting raw materials, while active peptides are able to suppress inflammation and resist micro- Biological infection is conducive to just build the culture medium system of healthy harmony at fermentation initial stage, to improve fermentation efficiency;Withered grass gemma Bacillus can improve micro-ecological environment, promote beneficial microbe breeding, improve body's immunity;It can also degrade anti-in fish meal Nutrient molecule reduces chyme viscosity in animal intestinal tract, reduces the generation of poisonous and harmful corrupt substance in enteron aisle, reduces to intestinal wall Damage and the pollution of environment, improve the digestive utilization ratio of nutriment;
It is above-mentioned that protective agent is added during fermented by mixed bacterium, it is skimmed milk 8%, xanthan gum 5%, sea according to mass percent Algae sugar 2%, potassium sorbate 0.6% and (S)-(+) -3- (1- naphthoxy) -1- phenyl-1-propanol 0.001%;Potassium sorbate and (S)- One of special presence of (+) -3- (1- naphthoxy) -1- phenyl-1-propanol can promote the growth and breeding of fermenting microbe, inhibit Harmful bacteria infects, and creates good environment for microorganism fungus kind fermentation;It may advantageously facilitate microorganism fungus kind and secrete various activity Enzyme, these enzymes, which have, to be inhibited inflammation and resists pathogenic infection, and safe and reliable environment can be provided for subsequent fermenting raw materials, is mentioned High fermentation efficiency, while anti-bacteria and anti-virus effect of tunning is improved, animal immunizing power can be enhanced as feed ingredient;Two The stability for being conducive to reinforce microorganism mixed bacteria liquid, delays it that the rotten time occurs, improves its enzyme activity retention rate;
(2) fresh aquatic product leftovers are rubbed, nutrients is added to mix, obtain fermentation medium;Nutrients is glucose, chlorine Change mixture composed by ferrous and dipotassium hydrogen phosphate;The quality of nutrients accounts for fermentation medium gross mass percentage and is respectively as follows: Glucose 0.01%, frerrous chloride 0.01%, dipotassium hydrogen phosphate 0.01%;
(3) fermented and cultured for obtaining step (2) is based on 115 DEG C of sterilizing 20min;
(4) fermentation medium after the sterilizing of step (3) acquisition is cooled to room temperature, then accesses 5% ocean rhodotorula bacterium- Bacillus subtilis Mixed Microbes powder, stirs and evenly mixs;
(5) fermentation medium that step (4) obtain ferments in following manner: fermentation medium, which is divided in, have been sterilized It ferments in tray, with a thickness of 4cm, fermented and cultured primary surface covers sterilized wet gauze in tray, then tray is placed in for charging Shelf top fermentation in sterilized solid fermentation room, control environment temperature is at 28 DEG C, fermentation time 30h;
(the Z) -3- hexenol of culture medium weight 0.001% and 0.002% riboflavin is added before fermentation in the fermentation medium; (Z) -3- hexenol and riboflavin can in regulation culture base microorganism fungus kind metabolic mechanism, make composite flora by proliferation The ingredients such as more polysaccharide, amino acid are metabolized out with synergistic effect, the nutrition for improving tunning is balanced, and the generation of microorganism It thanks to horizontal improve then to be conducive to improve fermentation rate;On the other hand it can increase microbial protease and substrate-function in culture medium Active site, improve the affinity of enzyme-to-substrate, accelerate Substrate hydrolysis into small-molecule substance, gained tunning is as feed Protein sources advantageously reduce the digestibility that feed coefficient improves feed;
(6) tunning is concentrated fermentation ends through dry, obtains and a kind of utilizes the best in quality of aquatic product leftovers preparation Fish meal product.
Embodiment 2:
The method that solid state fermentation aquatic products leftover bits and pieces prepares fish meal, includes the following steps:
(1) ocean rhodotorula bacterium and bacillus subtilis are respectively placed on potato sugar agar medium and carry out inclined-plane culture; It will obtain the ocean rhodotorula bacterium after inclined-plane culture and bacillus subtilis be inoculated in ocean rhodotorula bacterium and bacillus subtilis Strain bottle culture medium expand it is numerous, ocean rhodotorula bacterium and bacillus subtilis seed bottle bacterium solution according to volume ratio 3:2, with 6% inoculum concentration inoculation fermentation bottle mixed culture, after the completion of culture, centrifugation takes precipitating, and 45 DEG C of drying grind to obtain ocean rhodotorula Bacterium-bacillus subtilis Mixed Microbes powder;Ocean rhodotorula bacterium is rich in beta glucan, manna oligosacchride, active peptides and astaxanthin Isoreactivity substance can provide abundant nutriment for fermenting raw materials, while active peptides are able to suppress inflammation and resist micro- Biological infection is conducive to just build the culture medium system of healthy harmony at fermentation initial stage, to improve fermentation efficiency;Withered grass gemma Bacillus can improve micro-ecological environment, promote beneficial microbe breeding, improve body's immunity;It can also degrade anti-in fish meal Nutrient molecule reduces chyme viscosity in animal intestinal tract, reduces the generation of poisonous and harmful corrupt substance in enteron aisle, reduces to intestinal wall Damage and the pollution of environment, improve the digestive utilization ratio of nutriment;
It is above-mentioned that protective agent is added during fermented by mixed bacterium, it is skimmed milk 9%, xanthan gum 5%, sea according to mass percent Algae sugar 3%, potassium sorbate 1.0% and (S)-(+) -3- (1- naphthoxy) -1- phenyl-1-propanol 0.002%;
(2) fresh aquatic product leftovers are rubbed, nutrients is added to mix, obtain fermentation medium;Nutrients is glucose, chlorine Change mixture composed by ferrous and dipotassium hydrogen phosphate;The quality of nutrients accounts for fermentation medium gross mass percentage and is respectively as follows: Glucose 2.15%, frerrous chloride 3.72%, dipotassium hydrogen phosphate 1.69%;
(3) fermented and cultured for obtaining step (2) is based on 121 DEG C of sterilizing 30min;
(4) fermentation medium after the sterilizing of step (3) acquisition is cooled to room temperature, then accesses 5% ocean rhodotorula bacterium- Bacillus subtilis Mixed Microbes powder, stirs and evenly mixs;
(5) fermentation medium that step (4) obtain ferments in following manner: fermentation medium, which is divided in, have been sterilized It ferments in tray, with a thickness of 6cm, fermented and cultured primary surface covers sterilized wet gauze in tray, then tray is placed in for charging Shelf top fermentation in sterilized solid fermentation room, control environment temperature is at 29 DEG C, fermentation time 85h;It is being sent out before fermentation (the Z) -3- hexenol of culture medium weight 0.002% and 0.002% riboflavin are added in ferment culture medium;
(6) tunning is concentrated fermentation ends through dry, obtains and a kind of utilizes the best in quality of aquatic product leftovers preparation Fish meal product.
Embodiment 3:
The method that solid state fermentation aquatic products leftover bits and pieces prepares fish meal, includes the following steps:
(1) ocean rhodotorula bacterium and bacillus subtilis are respectively placed on potato sugar agar medium and carry out inclined-plane culture; It will obtain the ocean rhodotorula bacterium after inclined-plane culture and bacillus subtilis be inoculated in ocean rhodotorula bacterium and bacillus subtilis Strain bottle culture medium expand it is numerous, ocean rhodotorula bacterium and bacillus subtilis seed bottle bacterium solution according to volume ratio 4:3, with 7% inoculum concentration inoculation fermentation bottle mixed culture, after the completion of culture, centrifugation takes precipitating, and 50 DEG C of drying grind to obtain ocean rhodotorula Bacterium-bacillus subtilis Mixed Microbes powder;Ocean rhodotorula bacterium is rich in beta glucan, manna oligosacchride, active peptides and astaxanthin Isoreactivity substance can provide abundant nutriment for fermenting raw materials, while active peptides are able to suppress inflammation and resist micro- Biological infection is conducive to just build the culture medium system of healthy harmony at fermentation initial stage, to improve fermentation efficiency;Withered grass gemma Bacillus can improve micro-ecological environment, promote beneficial microbe breeding, improve body's immunity;It can also degrade anti-in fish meal Nutrient molecule reduces chyme viscosity in animal intestinal tract, reduces the generation of poisonous and harmful corrupt substance in enteron aisle, reduces to intestinal wall Damage and the pollution of environment, improve the digestive utilization ratio of nutriment;
It is above-mentioned that protective agent is added during fermented by mixed bacterium, according to mass percent be skimmed milk 10%, xanthan gum 6%, Trehalose 4%, potassium sorbate 1.2% and (S)-(+) -3- (1- naphthoxy) -1- phenyl-1-propanol 0.003%;
(2) fresh aquatic product leftovers are rubbed, nutrients is added to mix, obtain fermentation medium;Nutrients is glucose, chlorine Change mixture composed by ferrous and dipotassium hydrogen phosphate;The quality of nutrients accounts for fermentation medium gross mass percentage and is respectively as follows: Glucose 5%, frerrous chloride 5%, dipotassium hydrogen phosphate 5%;
(3) fermented and cultured for obtaining step (2) is based on 130 DEG C of sterilizing 30min;
(4) fermentation medium after the sterilizing of step (3) acquisition is cooled to room temperature, then accesses 5% ocean rhodotorula bacterium- Bacillus subtilis Mixed Microbes powder, stirs and evenly mixs;
(5) fermentation medium that step (4) obtain ferments in following manner: fermentation medium, which is divided in, have been sterilized It ferments in tray, with a thickness of 8cm, fermented and cultured primary surface covers sterilized wet gauze in tray, then tray is placed in for charging Shelf top fermentation in sterilized solid fermentation room, control environment temperature is at 30 DEG C, fermentation time 100h;It is being sent out before fermentation (the Z) -3- hexenol of culture medium weight 0.003% and 0.003% riboflavin are added in ferment culture medium;
(6) tunning is concentrated fermentation ends through dry, obtains and a kind of utilizes the best in quality of aquatic product leftovers preparation Fish meal product.
Comparative example 1:
The protective agent being added in fermented by mixed bacterium is without containing potassium sorbate and (S)-(+) -3- (1- naphthoxy) -1- phenyl -1- Propyl alcohol, rest part and embodiment 2 are completely the same.
Comparative example 2:
Raw material is added without (Z) -3- hexenol and riboflavin, rest part and embodiment 2 in the fermentation medium before being fermented It is completely the same.
The measurement of fish meal main component: fish meal is made through vacuum freeze drying in tunning, measures main indicator: thick egg It is white, GB/T6432-1994, Kjeldahl's method;Crude fat, GB/T6432-1994, soxhlet extraction methods;Ash content, GB/T6432- 1994, Method of burning of high temperature;Moisture, GB/T6432-1994, constant weight method.
The measuring method of free amino acid total amount is as follows in fermentation liquid:
1) production of amino acid standard curve:
The glutamic acid standard solution of the accurate 0.2mg/mL for drawing 0.0,0.5,1.0,1.5,2.0,2.5,3.0mL, is respectively placed in In the color-comparison tube of 25mL, 2% ninhydrin solution and phosphate buffer solution (pH6.7) each 1mL is then added, is uniformly mixed, Heating water bath 15min takes out, and is rapidly cooled to room temperature, adds water to graticule, shakes up, after standing 15min, under 570nm wavelength, with Reagent blank is that reference measures each solution light absorption value (A).Using amino acid milligram number as abscissa, light absorption value (A) is ordinate, is drawn Standard curve processed.
2) in fermentation liquid free amino acid total amount measurement:
Sample 1.0g is accurately weighed, is diluted with water 100 times, is mixed spare.Pipette samples solution 1.0mL, according to standard curve system Make step, measure light absorption value (A) under the same conditions, corresponding amino acid milli can be checked on standard curve with A value is measured Grams.
3) result calculates:
In formula:CFor the amino acid milligram number checked in from standard curve;mThe quality of sample is equivalent to for the sample solution of measurement (g).
Protein content is a key index for evaluating quality of fishmeal, and an important factor for influence fish meal prices.Egg White matter content is higher, and quality of fishmeal is better, in addition, the crude fat, ash content and moisture etc. in fish meal are also the important of evaluation fish meal Index, the fish meal based on unsaturated fatty acid is easy to oxidize to cause fish meal quality decline, and the ash content the high just to illustrate fish meal Middle fish-bone sandstone etc. is more, and fish meal quality is poorer;Fish meal ingredient is made to the embodiment of the present invention 2 to be measured, albumen Matter content is 63.28%, reaches primes standard;Crude fat content is 8.56%, reaches select quality standard;Content of ashes is 6.58%, reach select quality standard;Moisture content is 5.32%, meets fish meal standard.
Detect the effective viable bacteria for the microorganism fungus kind cultivated in embodiment 2 and comparative example 1 respectively using colony counting method Number, result are respectively 3,200,000,000/mL, 2,500,000,000/mL, show potassium sorbate and (S)-(+) -3- (1- naphthoxy) -1- phenyl -1- The special presence of propyl alcohol can optimize protectant effect in microorganism fungus kind fermentation, promote growth and breeding, increase simultaneously The stability of strong microorganism fungus kind.
Measure the free amino acid total amount in embodiment 2 and comparative example 2 in aquatic products leftover bits and pieces fermentation liquid, respectively 4.05g/ 100g, 2.16g/100g show that (Z) -3- hexenol and riboflavin have the effect of cooperative gain, can be improved in tunning The content of small molecule amino acid, so that protein sources of the fish meal of preparation as aquatic feeds, are greatly improved the digestion benefit of feed With rate.
Routine operation in operation of the present invention step is well known to those skilled in the art, herein without repeating.
Technical solution of the present invention is described in detail in embodiment described above, it should be understood that the above is only For specific embodiments of the present invention, it is not intended to restrict the invention, all any modifications made in spirit of the invention, Supplement or similar fashion substitution etc., should all be included in the protection scope of the present invention.

Claims (8)

1. the method that solid state fermentation aquatic products leftover bits and pieces prepares fish meal, prepares fish meal using microbe fermentation method, it is characterised in that: institute State the preparation process of microorganism Mixed Microbes powder are as follows: ocean rhodotorula bacterium and bacillus subtilis are respectively placed in potato sugar agar Inclined-plane culture is carried out on culture medium;It will obtain the ocean rhodotorula bacterium after inclined-plane culture and bacillus subtilis inoculation Yu Haiyang Rhodotorula sp and bacillus subtilis seed bottle culture medium expand it is numerous, inoculation fermentation mixed culture after, centrifugation, take precipitating dry It is dry, grind to obtain ocean rhodotorula bacterium-bacillus subtilis Mixed Microbes powder.
2. the method that solid state fermentation aquatic products leftover bits and pieces according to claim 1 prepares fish meal, it is characterised in that: the mixing Protective agent is added in bacterium powder during the fermentation, is by mass percentage skimmed milk 8-10%, xanthan gum 5-6%, trehalose 2- 4%, potassium sorbate 0.6-1.2% and (S)-(+) -3- (1- naphthoxy) -1- phenyl-1-propanol 0.001-0.003%.
3. the method that solid state fermentation aquatic products leftover bits and pieces according to claim 1 prepares fish meal, it is characterised in that: the fermentation The preparation process of culture medium are as follows: fresh aquatic product leftovers are rubbed, nutrients is added to mix, obtain fermentation medium.
4. the method that solid state fermentation aquatic products leftover bits and pieces according to claim 3 prepares fish meal, it is characterised in that: the nutrition Object is glucose, mixture composed by frerrous chloride and dipotassium hydrogen phosphate;The quality of nutrients accounts for fermentation medium gross mass Percentage is respectively as follows: glucose 0.01-5%, frerrous chloride 0.01-5%, dipotassium hydrogen phosphate 0.01-5%.
5. the method that solid state fermentation aquatic products leftover bits and pieces according to claim 3 prepares fish meal, it is characterised in that: the fermentation Culture is based on 115-130 DEG C of sterilizing 20-30min.
6. the method that solid state fermentation aquatic products leftover bits and pieces according to claim 1 prepares fish meal, it is characterised in that: the fermentation Process are as follows: the fermentation medium after sterilizing is cooled to room temperature, ocean rhodotorula bacterium-bacillus subtilis Mixed Microbes are then accessed Powder stirs and evenly mixs;Fermentation medium is divided in the fermentation tray sterilized, charging is with a thickness of 4-8cm, training of fermenting in tray It supports primary surface and covers sterilized wet gauze, then tray is placed in the shelf top fermentation in sterilized solid fermentation room.
7. the method that solid state fermentation aquatic products leftover bits and pieces according to claim 6 prepares fish meal, it is characterised in that: the fermentation Temperature control is at 28-30 DEG C, fermentation time 30-100h.
8. the method that solid state fermentation aquatic products leftover bits and pieces according to claim 6 prepares fish meal, it is characterised in that: the fermentation The core yellow of preceding (the Z) -3- hexenol and 0.002-0.003% that culture medium weight 0.001-0.003% is added in the fermentation medium Element.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109182132A (en) * 2018-08-16 2019-01-11 浙江海洋大学 Produce the cultural method of the Alexandrium mimutum Halim of gonyatoxin
CN115769858A (en) * 2021-09-08 2023-03-10 福建省恒祥渔业有限公司 Method for producing mixed feed formula by using fish enzymes for mink breeding

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