Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
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The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
Zhong yao cai, 2016, 39(2):307-311.
Study on Chemical Composition of Zingiberis Rhizome Carbonisata.[Reference:
WebLink]
To study the chemical constituents from Zingiberis Rhizome Carbonisata. g.
METHODS AND RESULTS:
Compounds were isolated by Sephadex LH-20,ODS,MCI and silica gel column chromatography. Their structures were elucidated by physicochemical property and spectral analysis. 16 compounds were isolated and identified as sitost-5-en-3β-ol acetate( 1),dibutyl phthalate( 2),4-[2-( 5-butylfuran-2-yl) ethyl]-2-methoxyphenol( 3),β-sitosterol( 4),8-paradol( 5),10-gingerdione( 6),6-shogaol( 7),6-paradol( 8),3,5-Diacetoxy-6-gingerdiol( 9),1,2-benzenediol( 10),zingiberone( 11),6-gingerol( 12),1,2,4,5-tetrahydroxybenzene( 13),stigmasterol acetate( 14),8-dehydrogingerdione( 15) and 3,5-diacetoxy-7-( 4-hydroxy-3-methoxyphenyl)-1-( 4,5-dihydroxy-3-methoxyphenyl) heptane( 16).
CONCLUSIONS:
All the compounds are isolated from Zingiberis Rhizome Carbonisata for the first time. And compounds 2,10,11,and13 are generated in the process of processing.
