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Application of microecological preparation in removing earthy smell and method for removing earthy smell of fishes in RAS system

An earthy smell and fish technology, which is applied in the field of aquatic product aquaculture, can solve the problems of time-consuming, high cost, increase fish diseases, etc., and achieve the effect of removing earthy smell and low energy consumption.

Active Publication Date: 2020-12-08
CHONGQING TECH & BUSINESS UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the inconsistency in the removal rate of different soil odor compounds, the soil odor fish in different ponds cannot be mixed and temporarily raised in the same temporary breeding pond, and the fish in different breeding ponds can only be temporarily raised separately, which is time-consuming. , laborious, high cost, and it will increase the probability of fish infection and increase the sales price, so it is not suitable for large-scale promotion

Method used

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  • Application of microecological preparation in removing earthy smell and method for removing earthy smell of fishes in RAS system
  • Application of microecological preparation in removing earthy smell and method for removing earthy smell of fishes in RAS system
  • Application of microecological preparation in removing earthy smell and method for removing earthy smell of fishes in RAS system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Get 100L cultured water body in 250L shaking flask, add Bacillus hydrohabitatus bacterium liquid (10 10 cfu / mL), at 120rpm, cultivated 48h under 30 DEG C of conditions, and the degradation rate of Bacillus hydrohabitatus to geosmin and 2-methylisoborneol in the aquaculture water body is shown in Table 1.

[0039] Table 1. Degradation rate of geosmin and 2-methylisoborneol by Bacillus hydrous

[0040]

[0041] As can be seen from Table 1, the degradation rate of geosmin in the aquaculture water body by Bacillus aquaticus is more than 91.7%, and the degradation rate of 2-methylisoborneol is lower than 10.4%, which shows that Bacillus aquaticus has a certain effect on geosmin With good degradation ability, Bacillus hydrohabitatum can be used to degrade geosmin to remove earthy smell.

Embodiment 2

[0043] Get 100L cultured water body in 250L shaking flask, add flagellate marine bacterium bacterium liquid (10 10 cfu / mL), at 120rpm, cultivated 48h under 30 ℃ of conditions, flagellate marine bacterium is as shown in table 2 to the degradation rate of geosmin and 2-methylisoborneol in aquaculture water.

[0044] Table 2 Degradation rates of geosmin and 2-methylisoborneol by flagellar-dwelling marine bacteria

[0045]

[0046] It can be seen from Table 2 that the degradation rate of flagellate marine bacteria to 2-methylisoborneol in aquaculture water is above 91.9%, and the degradation rate of geosmin is below 10.6%, which shows that flagellate marine bacteria have a higher rate of degradation of 2-methylisoborneol. Isoborneol has good degradation ability, and flagellate marine bacteria can be used to degrade 2-methylisoborneol to remove the earthy smell.

Embodiment 3

[0048] Get 100L culture water body in 250L shaking flask, add Microbacterium bacterium liquid (10 9 cfu / mL), cultivated at 120rpm and 30°C for 48h, the degradation rates of microbacteria to geosmin and 2-methylisoborneol in the culture water are shown in Table 3.

[0049] Table 3 The degradation rate of microbacteria to geosmin and 2-methylisoborneol

[0050]

[0051] As can be seen from Table 3, the degradation rate of microbacteria to 2-methylisoborneol in the aquaculture water body is more than 81.2%, and the degradation rate of geosmin is more than 81.3%, which shows that microbacteria are to geosmin and 2-methylisoborneol. Camphenol has good degradation ability, microbacteria can be used to simultaneously degrade geosmin and 2-methylisoborneol to remove earthy smell.

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Abstract

The invention discloses an application of a microecological preparation for removing earthy smell and a method for removing earthy smell of fish in an RAS system, and particularly discloses an application of microbacterium, bacillus aquatica and flagellate marine bacteria for removing earthy smell and a method for removing earthy smell of fish in the RAS system. The microbacterium with the preservation number of ACCC-02712 can degrade geosmin and 2-methylisoborneol. The bacillus aquatica with the preservation number of CGMCC-1.7029 can degrade geosmin. The flagellate marine bacteria with the preservation number of CGMCC-1.12664 can be used for degrading the 2-methylisoborneol. According to the method for removing the earthy smell of the fishes in the RAS culture system, microbacterium withthe preservation number of ACCC-02712 is added into culture water of the RAS culture system, the thallus density of the microbacterium is larger than or equal to 109 cfu / mL, and the volume ratio of the adding amount of the microbacterium to the culture water is 0.5-1.2 mL: 1 m3. The microbial inoculum is used for removing the earthy smell of the fishes in the RAS culture system, the content of substances generating the earthy smell can be controlled, and the number of microorganisms generating the earthy smell can be controlled from the origin.

Description

technical field [0001] The invention belongs to the technical field of aquatic product cultivation, and particularly relates to the application of probiotics to remove soil odor and the method for removing fish earth odor in RAS system. Background technique [0002] Industrialized recirculating aquaculture (RAS) adopts an intensive high-density farming model, and uses a series of bioengineering methods to process the water for farming, so that it can be recycled, save water resources, and improve farming efficiency. All aquaculture water is recycled within the system, with no pollution and zero discharge. Industrialized recirculating aquaculture also has the characteristics of less land occupation, high-quality and safe products, fewer diseases, high density, aquaculture production is not restricted and affected by regions or climates, high resource utilization, high output, and low risk. An important way for the sustainable development of aquaculture. [0003] In the RAS ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C12N1/20C12R1/01C12R1/225C02F101/34C02F103/20
CPCC02F3/34C02F3/348C12N1/20C02F2101/34C02F2103/20Y02A40/81
Inventor 周月明张玮申渝尹文洁杨金汇吴昊峰
Owner CHONGQING TECH & BUSINESS UNIV
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