Alnusdiol exhibits the good scavenging activities against 2, 2-diphenyl-1-picryhydrazyl (DPPH), shows moderate anti-oxidant effects.
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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.
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Phenolic Constituents from Rhizome of Wikstroemia indica and Their Anti-tumor Activity[Reference: WebLink
Seventeen phenolic constituents were isolated from the rhizome of Wikstroemia indica using a combination of various chromatographic methods.
METHODS AND RESULTS:
Their structures were elucidated and identified as wikstromol( 1),matairesinol( 2),syringaresinol( 3),pinoresinol( 4),isolariciresinol( 5),ciwujiatone( 6),isorhamnetin-3-O-robinobioside( 7),wikstaiwanone A( 8),wikstaiwanone B( 9),kaempferol( 10),rutin( 11),daphnoretin( 12),triumbelletin( 13),Alnusdiol( 14),aloe-emodin-8-O-β-D-glucoside( 15),chlorogenic acid( 16) and p-hydroxybenzoic acid( 17) by physicochemical properties and spectral data including NMR and MS. Compounds 3-9 and 13-16 were isolated from this plant for the first time.
The anti-tumor tests showed compounds 1-4,6-9 exhibited different activities against colon cancer cell lines SW480 and SW620,in which compound 6 showed most significant activities against the two cell lines.
Chinese Traditional & Herbal Drugs, 2013 ,44 (19) :2650-6.
Chemical constituents in leaves of Ostryopsis nobilis and their anti-oxidant activities[Reference: WebLink
To study the chemical constituents of Ostryopsis nobilis and their anti-oxidant activities.
METHODS AND RESULTS:
The chemical constituents were isolated and purified by various column chromatographic methods.Their structures were identified by physicochemical properties and spectral analyses. Twenty-three compounds were isolated from the 95% ethanol extract and identified as loliolide(1),maslinic acid(2),vanillic acid(3),3β-(3,4-dihydroxycinnamoyl)-erythrodiol(4),dammarenediol II 3-caffeate(5),pinoresinol(6),quercetin(7),daucosterol(8),kaempferol(9),3,5-dihydroxy-1,7-bis(4H-hydroxyphenyl) heptane(10),Alnusdiol(11),casuarinondiol(12),quercetin-3-O-α-L-arabinoside(13),isoquercetin(14),2,3-dihydroxylbenzoic acid(15),isoquercetin-6″-butyl acetate(16),isoquercetin-6″-benzoate(17),4″-trans-p-coumaroyl-kaempferol-3-O-α-L-rhamnoside(18),4″-cis-p-coumaroyl-kaempferol-3-O-α-L-rhamnoside(19),maslinic acid-28-O-β-D-glucoside(20),gallic acid(21),betulatetraol(22),and L-chiroinositol(23).
All the compounds are isolated from the plants in this genus for the first time.Diarylheptanoid compounds and other ten monomer compounds exhibit the good scavenging activities against 2,2-diphenyl-1-picryhydrazyl(DPPH),and O.nobilis extracts show moderate anti-oxidant effects.