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[Study on the quality of Rhizome of Dioscorea persimilis]
Baozuo He1, Jianping Jiang, Jianguang Mo
1Guangxi Traditional Medical College, Nanning, 530001.
Objective:
To evaluate the quality of Rhizome of D. persimilis Prain et Burk.
Methods:
Determined the contents of 6 qualitative indexes in samples of Rhizome of D. persimilis Prain et Burk that were cultivated in Yongning, Bobai, Beiliu, Guiping and Rongxian of Guangxi and in sample of Rhizome of Dioscorea opposita Thunb, that was cultivated in Wenxian, Henan province.
Results:
The contents of water in them (%): 15.39, 18.52, 15.41, 13.96, 15.48, 15.74; the contents of protein in them (%): 7.06, 8.45, 9.20, 9.67, 8.63, 9.79; the contents of starch in them (%): 84.51, 86.51, 82.72, 83.65, 84.19, 79.13; the contents of water extracts in them (%): 6.19, 6.98, 8.95, 7.41, 6.70, 9.40; 90% EtOH extracts in them (%): 2.00, 2.04, 2.68, 2.20, 2.11, 3.53; the contents of 18 kinds of amino acids in them (%): 5.23, 6.31, 6.22, 6.78, 6.59, 6.83.
Conclusion:
The quality of Rhizome of D. persimilis Prain et Burk cultivated in Guiping or Beiliu is beter than that of Rhizome of D. persimilis Prain et Burk cultivated in Yongning. The quality of Rhizome of D. persimilis Prain et Burk cultivated in Rongxian or Bobai are between those of Rhizome of D. persimilis Prain et Burk cultivated in Guiping or Beiliu and Rhizome of D. persimilis Prain et Burk cultivated in Yonging. The qualities of Rhizome of D. persimilis Prain et Burk cultivated in Guiping or Beiliu are similar to that of Yam.