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Objective To characterize the composition of amino acids in fish dishes consumed by Liaoning Province residents and to evaluate their nutritional value. Methods The 7 kinds of representative fish dishes for daily consumption were selected, the amino acid composition and content of fish dishes were determined by conventional acid hydrolysis and alkaline hydrolysis methods using a fully automated amino acid analyzer, the amino acid score and amino acid ratio coefficient methods were used to evaluate the comprehensive nutritional value and to analyze the content of essential amino acids in a clustered heat map. Results The 7 kinds of fish dishes had complete amino acid types, with a total amino acid content ranged from 92.88 to 190.00 mg/g; the essential amino acid content ranged from 36.09 to 74.14 mg/g; the ratio of the essential amino acid to the total amino acid ranged from 0.39 to 0.41; and the total content range of sweet amino acids and umami amino acids ranged from 51.23 to 103.37 mg/g. The evaluation of amino acid scores and ratio coefficients showed that the composition of essential amino acids in the 7 kinds of fish dishes was balanced and abundant. The clustering heat map divided the 7 kinds of fish dishes into two categories according to the content of essential amino acids. Conclusion Although there is variability in the amino acid content and nutritional value of fish dishes consumed daily by Liaoning residents, they all contain a wide variety of amino acids with high nutritional value. They can be used as high-quality protein sources. This study can provide a scientific value for the nutritional value analysis of finished dishes.
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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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