Full
Outline
To investigate the types and differences of volatile compounds in ethyl ester-type fish oil after the addition of different adsorbents.
The carbon tube composite adsorbent was characterized using a scanning electron microscope (SEM). The quality of ethyl ester-type fish oil was evaluated by determining its acid value, peroxide value and p-anisidine value. Gas chromatography-ion mobility spectrometry (GC-IMS) combined with multivariate statistical analysis was applied to screen the key volatile compounds in ethyl ester-type fish oil treated with different adsorbents.
SEM analysis confirmed the stability of the carbon nanotube-activated carbon composite structure; after treatment with the carbon tube composite adsorbent, the quality of ethyl ester-type fish oil complied with GB 5009. 229—2025 National food safety standard-Determination of acid value in foods, GB 5009.227—2023 National food safety standard-Determination of peroxide value in foods, GB/T 24304—2024 Animal and vegetable fats and oils-Determination of anisidine value; GC-IMS analysis detected a total of 53 kinds of volatile compounds, including 11 kinds of aldehydes, 10 kinds of alcohols, 8 kinds of ketones, 7 kinds of esters, 6 kinds of alkenes and 11 kinds of other compounds. Combined with orthogonal partial least squares discriminant analysis and variable importance in projection, GC-IMS screening finally identified 14 kinds of key volatile substances, namely (E, E)-2, 4-nonadienal, N-nitrosodimethylamine, 2-butanone (D), (Z)-3-hexenol, ethanediol (D), (E, E)-2, 4-heptadienal (D), decanal, 1-butanol, 3-methyl-1-butanol, ethanediol (M), ethyl propionate (M), (E, E)-2, 4-heptadienal (M), 3-penten-2-one (M) and camphene.
This study clarifies the regulatory rules by which a novel new type carbon tube composite adsorbent the flavor compounds in ethyl ester-type fish oil, providing scientific guidance for optimizing the refining process of ethyl ester-type fish oil, as well as theoretical support and practical evidence for the development of new adsorbent materials.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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