Premna latifolia leaves collected in three Andhra Pradesh villages had different reported elemental concentrations. Village-specific values are preserved as local leafy-vegetable evidence; the paper supplies no replicate counts or uncertainty estimates.
Key numbers
| Village | Al ppm | Mn ppm | Fe ppm | Co ppm | Cu ppm | Zn ppm |
|---|---|---|---|---|---|---|
| Kusumapuram | 11.67 | 8.5 | 15.73 | 0.03 | 0.47 | 8.91 |
| Varaka | 7.64 | 15.67 | 21.02 | 0.06 | 0.4 | 6.59 |
| Borivanka | 17.22 | 3.3 | 23.63 | 0.04 | 0.32 | 9.81 |
Methods (brief)
Leaves collected directly from fields, washed twice with distilled water, shade-dried, then 0.5 g digested with nitric acid and hydrogen peroxide. Digests made to 50 mL and analyzed by ICP-MS. No LOD, recovery, reference material or dispersion is reported. Leaf dry-material basis follows sample preparation; no fresh-weight conversion is supplied.
Implications
Supports geographic variation in six elements in a specific wild edible leaf. It does not establish nutritional adequacy, safety, or a regional market distribution. The source’s characterization of aluminium as an essential nutrient is not adopted.
Evidence Fitness: EF-2 for village-level occurrence values with limited sampling and QA metadata. Regional/sample and basis qualifiers must accompany any later reuse.
Related evidence
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