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Recently, the "pretreatment method for the detection of soil odorous substances in aquaculture water" invented by Song Chao, associate researcher of the Freshwater Fisheries Research Center of the Chinese Academy of Fishery Sciences, and others, was authorized by the national invention patent, patent number: ZL202110449764.
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The aquatic products provided by aquaculture have greatly met the protein needs of our people and are the unshakable foundation
for maintaining national food security.
However, some odorous substances remaining in aquatic products greatly affect the taste of
food.
These odor substances are mainly earthy odor substances, mainly including geosmin, 2-methylisocamprol, 2-isobutyl-methoxypyrazine, 2-isopropyl-methoxypyrazine and 2,3,6-trichloroanisole ether, of which the greatest impact on the soil odor of aquatic products, and the most studied are geosmin and 2-methylisocamprol
.
for maintaining national food security.
However, some odorous substances remaining in aquatic products greatly affect the taste of
food.
These odor substances are mainly earthy odor substances, mainly including geosmin, 2-methylisocamprol, 2-isobutyl-methoxypyrazine, 2-isopropyl-methoxypyrazine and 2,3,6-trichloroanisole ether, of which the greatest impact on the soil odor of aquatic products, and the most studied are geosmin and 2-methylisocamprol
.
The soil odor of aquatic products is closely related to the content in the aquaculture water body, and it can be said that the soil odor substance in the water body is the most important source of
aquatic product residue.
After geosmin and dimethylisocamprol enter the water body, part of it enters the bloodstream through the gills, enters the fish body, and is deposited in tissues with high body fat content; The earthy odor substances of the water body can also be directly absorbed by the skin on the surface of the fish body and enter the fish body tissue through osmosis; In addition, the water swallowed by fish contains bacteria and earthy odorous substances that secrete earthy odorous substances, which enter the fish body
through intestinal epithelial cells.
aquatic product residue.
After geosmin and dimethylisocamprol enter the water body, part of it enters the bloodstream through the gills, enters the fish body, and is deposited in tissues with high body fat content; The earthy odor substances of the water body can also be directly absorbed by the skin on the surface of the fish body and enter the fish body tissue through osmosis; In addition, the water swallowed by fish contains bacteria and earthy odorous substances that secrete earthy odorous substances, which enter the fish body
through intestinal epithelial cells.
It can be seen from the above that in order to effectively prevent and control the residue of soil odor substances from water bodies to aquatic products, it is of great significance
to develop a detection method for soil odor substances (geosmin and 2-methylisocamprol) remaining in aquaculture waters 。 In view of the problems existing in the prior art, the present invention proposes a pretreatment method for the detection of soil odorous substances in aquaculture water, by optimizing the proportion of the amount of dispersed solid phase extraction materials, screening the most suitable dispersed liquid phase extraction organic solvent, which can realize the purification, extraction and concentration of soil odorous substances in aquaculture water, which has the advantages
of environmental friendliness, cost saving, fast and simple and batch operation.
to develop a detection method for soil odor substances (geosmin and 2-methylisocamprol) remaining in aquaculture waters 。 In view of the problems existing in the prior art, the present invention proposes a pretreatment method for the detection of soil odorous substances in aquaculture water, by optimizing the proportion of the amount of dispersed solid phase extraction materials, screening the most suitable dispersed liquid phase extraction organic solvent, which can realize the purification, extraction and concentration of soil odorous substances in aquaculture water, which has the advantages
of environmental friendliness, cost saving, fast and simple and batch operation.
