Radix Morindae Officinalis
Morinda Root is the dried root of Morinda officinalis How (Fam. Rubiaceae). The drug is collected all the year round, removed from rootlet, dried in the sun partially, beaten gently to be compressed, and then dried in the sun.
Description Compressed-cylindrical, somewhat curved, varying in length, 0.5-2 cm in diameter. Externally greyish-yellow or dark grey, with longitudinal wrinkles and transverse cracks, some bark transversely broken and separated from wood. Texture tough, fracture bark thick, purple or purplish, easily separated from wood. Wood hard, yellowish-brown or yellowish-white, 1-5 mm in diameter. Odourless; taste, sweetish and slightly astringent.
Identification Transverse section: Cork of several rows of cells. Stone cells single or several in groups in the outer part of cortex, interruptedly arranged in a ring. Parenchymatous cells containing raphides of calcium oxalate, arranged tangentially. Phloem broad, parenchymatous cells in the inner part containing raphides of calcium oxalate, arranged axially. Cambium distinct. Vessels in xylem single or 2-3-grouped, arranged radially, up to 105 mm in diameter; xylem fibres developed; xylem rays 1-3 rows of cells wide; non-lignified wood parenchymatous cells found occasionally.
Powder: Purplish or purplish-brown. Stone cells yellowish, subrounded, subsquare, subrectangular, elongated or irregular-shaped, some of them tapered at one end, 21-96 mm in diameter, walls up to 39 mm thick, some with distinct striations, pits and pit-canals, some stone cells large and slightly thick-walled. Needle crystals of calcium oxalate mostly in raphides, up to 184 mm long. Bordered pitted vessels pale yellow, up to 105 mm in diameter, with fine and dense bordered pits. Fibre tracheids long-fusiform, bordered pits relatively large, pit apertures obliquely slit-shaped, V-shaped and cross-shaped.
Total ash Not more than 6.0% (Appendix IX K).
Acid-insoluble ash Not more than 0.80% (Appendix IX K).
Extractives Carry out the cold extraction method as described under the determination for water-soluble extractives (Appendix X A). Not less than 50. 0%.
Processing Radix Morindae Officianlis Eliminate foreign matter.
Radix Morindae Officianlis (removed from wood) Steam the clean Radix Morindae Officinalis as described under the method for steaming (Appendix II D), remove the woody cores while hot, cut into sections, and dry.
Radix Morindae Officinalis (processed with salt) Steam the clean Radix Morindae Officianlis as described under the method for steaming with salt-water (Appendix II D), until it is steamed thoroughly, remove the woody cores while hot, cut into sections and dry.
Radix Morindae Officinalis (prepared) Break Radix Glycyrrhizae to pieces and boil with some water. Remove the residue, add clean Radix Morindae Officinalis to the decoction and mix well, boil the mixture thoroughly as described under the method for boiling (Appendix II D), remove the woody cores, cut into sections and dry, using 6 kg of Radix Glycyrrhizae per 100 kg of Radix Morindae Officinalis.
Action To reinforce the kidney yang, to strengthen the tendons and the bones, and to relieve rheumatic condition.
Indications Impotence, seminal emission, infertility, menstrual disorders, pain and cold feeling in the lower abdomen; rheumatic arthralgia; limpness of the legs.
Usage and dosage 3-9 g.
Storage Preserve in a ventilated dry place, protected from mould and moth.