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| Chemical Name | Dosage | Reference |
|---|---|---|
| XANTHOHUMOL | not available | Duke, 1992 * |
| XANTHOTOXIN | 20 mg/man/day | Duke, 1992 * |
| YANGONIN | not available | Duke, 1992 * |
| ZINGERONE | not available | Duke, 1992 * |
| ZYGOPHYLLIN | not available | Duke, 1992 * |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Bauhinia vahlii | not available | 1 | 0 |
| Belamcanda chinensis | Leopard Lily; Blackberry Lily; Shenan; Iris Tigre (Fr.); Leopardenblume (Ger.); Maravilla (Sp.); Mariposa (Sp.) | 5 | 111, 832 |
| Benincasa hispida | Waxgourd | 5 | 52, 895 |
| Berberis vulgaris | Barberry | 16 | 269, 460 |
| Bertholletia excelsa | Brazilnut; Brazilnut-Tree; Creamnut; Paranut | 10 | 3, 858, 584 |
| Beta vulgaris | Beet; Beetroot; Sugar Beet; Garden Beet | 18 | 81, 508 |
| Betula alba | not available | 1 | 0 |
| Betula alleghaniensis | not available | 1 | 0 |
| Betula caerulea | not available | 1 | 0 |
| Betula caerulea-grandis | not available | 1 | 0 |
| Betula cordifolia | not available | 1 | 0 |
| Betula dahurica | not available | 1 | 0 |
| Betula ermanii | not available | 2 | 0 |
| Betula lenta | Cherry Birch | 5 | 12, 488 |
| Betula maximowicziana | not available | 2 | 38, 000 |
| Betula papyrifera | not available | 2 | 15, 000 |
| Betula pendula | not available | 1 | 4, 200 |
| Betula platyphylla | not available | 2 | 0 |
| Betula populifolia | not available | 1 | 0 |
| Betula sp. | not available | 2 | 0 |