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St. John's Wort P.E.
Botanical Source: Hypericum perforatum L.
Used Part: Aerial parts in blossom
Specification: 0.3% Hypericins UV
0.3% Hypericin HPLC
3%,98% Hyperforin HPLC
Appearance: Yellow-white powder
Test Method: HPLC
Bulk density: 0.35-0.75g/mL
Moisture: <5% Ash: <5%
Description:
Hypericum perforatum is ayellow-flowering, stoloniferous or sarmentose, perennialherb indigenous to Europe, which has been introduced to many temperate areas of the world and grows wild in many meadows. The common name comes from its traditional flowering and harvesting on St John's day, 24 June. The genus name Hypericum is derived from the Greek words hyper (above) and eikon (picture), in reference to the traditional use of the plant to ward off evil, by hanging plants over a religious icon in the house during St John's day. The species name perforatum refers to the presence of small oil glands in the leaves that look like windows, which can be seen when they are held against the light.
St John's wort is a perennial plant with extensive, creeping rhizomes. Its stems are erect, branched in the upper section, and can grow to 1 m high. It has opposing, stalkless, narrow, oblong leaves that are 12 mm long or slightly larger. The leaves are yellow-green in color, with transparent dots throughout the tissue and occasionally with a few black dots on the lower surface.[1] Leaves exhibit obvious translucent dots when held up to the light, giving them a ‘perforated’ appearance, hence the plant's Latin name.
Its flowers measure up to 2.5 cm across, have five petals, and are colored bright yellow with conspicuous black dots. The flowers appear in broad cymes at the ends of the upper branches, between late spring and early to mid summer. The sepals are pointed, with glandular dots in the tissue. There are many stamens, which are united at the base into three bundles. The Pollen grains are ellipsoidal.
Function:
1. St John's wort is widely known as an Herbal treatment for depression. In some countries, such as Germany, it is commonly prescribed for mild depression, especially in children and adolescents.[6] It is proposed that the mechanism of action of St. John's wort is due to the inhibition of reuptake of certain neurotransmitters.
2. St. John's wort is also being studied for anxiety because, in some studies on depression, people taking St. John's wort also reported an improvement in anxiety. More research is needed
3. St. John’s wort has also been suggested as a possible treatment for OCD because the same medications (antidepressants) are often used for OCD, and because of promising results from a preliminary study. A later study on St. John's wort, however, didn’t find it more effective than a placebo for OCD.
Application:
Food field, cosmetic field, pharmaceutical