Full
Outline
To establish a method for the determination of nitrite and multiple phosphates including phosphate, pyrophosphate, triphosphate and trimetaphosphate in ham sausage by ion chromatography.
The samples were ultrasonically extracted, deproteinized with chloroform, purified by ion chromatography-reversed phase solid phase extraction column, and then detected by ion chromatography.
There was a good linear relationship in the range of 0.01–4.00 mg/L for nitrite, and 0.10–40.00 mg/L for phosphate, pyrophosphate,triphosphate and trimetaphosphate, and the correlation coefficients were all over 0.999. The limits of detection were 0.06–0.60 mg/kg and the limits of quantitation were 0.20–2.00 mg/kg. The recoveries were between 89.4%–103.5%,and the relative standard deviations were between 1.4%–6.1%.
This method is highly sensitive,accurate and reliable, with simple operation, making it suitable for the simultaneous determination of nitrite and various phosphates in ham sausage.
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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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