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Objective To establish a method for rapid detection of nutritional components in raw milk by milk composition analyzer. Methods This study used commercial raw milk as the test sample, and based on Fourier transform infrared spectroscopy (FTIR), it constructed a rapid detection method for 9 parameters such moisture, protein, fat, lactose, ash, non-fat milk solids, total dry matter, relative density and freezing point in raw milk. The precision and accuracy of the rapid detection method were evaluated by comparing it with the national standard detection results. Results The determination results of the milk composition analyzer were as follows: Moisture 86.00%-89.09%, protein 2.52%-4.51%, fat 2.65%-5.39%, lactose 3.81%-5.40%, ash 0.56%-0.80%, and non-fat milk solids 6.94%-9.81%. F-test and T-test were performed on 9 parameters including fat, lactose and non-fat milk solids. The maximum F-value was 9.00, less than 9.55, indicating no significant difference in precision for the 9 parameters. The maximum T-value was 20.82, less than 22.327, confirming no significant difference in accuracy for the 9 parameters. Both the milk composition analyzer method and the national standard method could accurately determine milk nutritional indicators. The results showed that the precision and accuracy of the established rapid detection method had no significant differences from those of the national standard method. Conclusion The rapid detection method for nutrient components in raw milk constructed in this study can be used for high-throughput and low-cost rapid screening of nutrient components in raw milk. National standard methods should be used as the benchmark for high-precision scenarios, supervision and admission, while daily monitoring should primarily rely on rapid detection results from milk composition analyzers.
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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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