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| Phytoestrogens |
| 12.10.05 (2:01 am) [edit] |
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Phytoestrogens are found in the seeds, stems, roots or flowers of plants, such as fenugreek or red clover, serving as natural fungicides and acting as part of the plant's defence mechanism against microorganisms. They also are the molecular signals that emanate from the root of leguminous plants that attract specific nitrogen-fixing soil bacteria. The main classes of phytoestrogens are the isoflavones, coumestans and lignans. Isoflavones are receiving a great deal of commercial interest at present; they are found almost exclusively in legumes, the soya bean being the most abundant source. The most important soya isoflavones are genistein and daidzein. Lignans, however, are also an important source of phytoestrogens in the UK diet as they are present in most fibre-rich foods
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