Advances in study on resveratrol / 中草药

Resveratrol, an important phytoalexin, has a variety of physiological activities in the treatment of diseases and in health care. In recent years, it has been extensive and in-depth researched in the field of plant sources, food and pharmaceutical industry, plant physiology, and so on. The natural plant resources which contain resveratrol are included in this article. The advances in study on resveratrol are reviewed, which includes the methods of extraction, detection, synthesis, metabolism, absorption, distribution, and pharmacological action, to provide the valuable reference for researching and developing resveratrol.

Effect of forchlorfenuron on fruit morphology and lignans content of Schisandra chinensis / 中国中药杂志

The effect of plant growth regulator forchlorfenuron (CPPU) 1 x 10(-6), 0.67 x 10(-6), 0.5 x 10(-6) on fruit morphology and effective components lignans was studied. Those morphologies were the combination of four basic morphological changes. The result showed, diametre were increased and longitudinal diametre of fruits were inhibited by foliage fertilizers including CPPU. At the same time, 1 000-grain weight and yield showed the varying degrees increase under CPPU. The order of the degree was 0.5 x 10(-6) > 1 x 10(-6) > 0.67 x 10(-6). Six lignans content of Schisandra chinensis of different harvest time and different CPPU processing groups were determined, the results showed that lignans accumulation occurred mainly in periods of premature the half mature fruiting stages. Under the 0.67 x 10(-6) CPPU treatment, schisandrol B, schisandrin B, schisandrin C content of S. chinensis showed different increase.

Identification of Schisandra chinensis with white fruits based on ITS2 sequences / 中国中药杂志

<p><b>OBJECTIVE</b>To analyse a special kind of Schisandra chinensis with the white fruit using ITS2 barcode at molecular levels.</p><p><b>METHOD</b>ITS2 regions were sequenced bidirectionally. Sequence assembly and consensus sequence generation were performed using the CodonCode Aligner, MEGA 5.0 software was used to align the sequences. The ITS2 secondary structure was predicted using ITS2 web server, BLAST 1 method was used to identify the S. chinensis with the white fruit.</p><p><b>RESULT</b>The length of the ITS2 sequence was 231 bp. And the sample was identified as S. chinensis using the method of BLAST 1. Their mean interspecific genetic distance (K2P distance) among the populations of the S. chinensis with the white fruit and S. chinensis was far lower than the mean interspecific genetic distance between the S. chinensis and S. sphenanthera.</p><p><b>CONCLUSION</b>By using ITS2 the S. chinensis with the white fruit was identified as S. chinensis, and the ITS2 barcode could be used to identify S. chinensis and S. sphenanthera.</p>

HPLC determination of six lignans in different parts of Schisandra chinensis / 中国中药杂志

<p><b>OBJECTIVE</b>To compare the content of six lignans of different parts of Schisandra chinensis.</p><p><b>METHOD</b>Agilent TC-C18 (4.6 mm x 250 mm, 5 microm) was used with acetonitrile-water gradient system as mobile phase. Wave length was 250 nm. The flow rate was 1 mL x min(-1). Column temperature was 30 degrees C.</p><p><b>RESULT</b>The total lignans content of wild Schisandra chinensis was higher than that of the cultivated varieties. The total lignans content of different parts varied significantly, wherein the root > main branch > side branches > leaf.</p><p><b>CONCLUSION</b>This method is stable, reliable, can be used for the quality evaluation of different parts of Schisandra.</p>