Kang and colleagues measured elements in pitted red jujube for origin discrimination. Samples were pitted and freeze-dried, so the basis is freeze-dried. Table 3 is mg/kg. The text layer used a non-decimal glyph for the radix. Digits were not changed. All five origins share letter a for these metals. No metal certified reference material is described. Chromium is not hexavalent. Aluminum, arsenic, mercury, and tin are not in this table.
Key numbers
Table 3, mg/kg, printed value ± accompanying value. Origins are not averaged.
| Origin | n | Chromium | Nickel | Cadmium | Lead |
|---|---|---|---|---|---|
| Henan Xinzheng | 3 | 0.497 ± 0.150 | 0.388 ± 0.142 | 0.006 ± 0.002 | 0.069 ± 0.025 |
| Shanxi Taigu | 5 | 0.572 ± 0.180 | 0.316 ± 0.111 | 0.009 ± 0.006 | 0.056 ± 0.016 |
| Xinjiang Hami | 5 | 0.384 ± 0.344 | 0.343 ± 0.073 | 0.004 ± 0.002 | 0.059 ± 0.030 |
| Xinjiang Yutian | 5 | 0.211 ± 0.100 | 0.264 ± 0.032 | 0.002 ± 0.000 | 0.041 ± 0.013 |
| Xinjiang Cele | 5 | 0.197 ± 0.052 | 0.506 ± 0.331 | 0.024 ± 0.044 | 0.073 ± 0.020 |
Methods (brief)
ICP-MS on freeze-dried pitted fruit. The paper is in Chinese with an English abstract.
Evidence fitness
The five rows support a freeze-dried red jujube note by origin. They do not support a single pooled jujube value or fresh fruit.
Limitations
Freeze-dried basis. The radix glyph in the text layer was read as a decimal point. No metal CRM.
Related evidence
Update history
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