Massonianoside B
Massonianoside B shows potent antioxidant activity.
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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.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
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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Bioorg Med Chem Lett. 2012 Sep 15;22(18):5819-22.
A new antifungal and cytotoxic C-methylated flavone glycoside from Picea neoveitchii.[Pubmed:
22901896]
METHODS AND RESULTS:
A new C-methylated flavone glycoside, 5,7-dihydroxy-3-methoxy-6-C-methylflavone 8,4'-di-O-β-D-glucopyranoside (1), was isolated from the twigs and leaves of Picea neoveitchii Mast, together with eight known compounds, 5,7,8,4'-tetrahydroxy-3-methoxy-6-methylflavone 8-O-β-D-glucopyranoside (2) kaempferol 3,4'-di-O-β-D-glucopyranoside (3), apigenin 7-O-β-D-glucopyranoside (4), tiliroside (5), Massonianoside B (6), umbeliferone 7-O-β-D-glucopyranoside (7), dihydroconiferin (8) and gleditschiaside A (9). Their structures were elucidated on the basis of analyses of spectroscopic data.
CONCLUSIONS:
Compound 1 showed moderate antifungal activity against tested plant pathogens (Pyricularia grisea (Cooke) Sacc., Sclerotium rocfsii Sacc. and Alternaria mali Roberts), however, compounds 2 and 5 had obvious inhibitory effect against S. rocfsii and A. mali, respectively. Compounds 1, 2, 3 and 9 also exhibited potent cytotoxicity against Spodoptera litura Fabricius cells.
J. Funct. Foods, 2015, 14:605-12.
Cedrus deodara pine needle as a potential source of natural antioxidants: Bioactive constituents and antioxidant activities[Reference:
WebLink]
In the present study, the bioactive constituents and antioxidant activity of Cedrus deodara pine needle were investigated.
METHODS AND RESULTS:
A new compound, 3-p-trans-coumaroyl-2-hydroxyquinic acid (1), and seven known compounds were isolated from the 50% methanol extract of C. deodara pine needle and their structures were identified by MS and extensive NMR data analyses. Quantitative analysis of the compounds was performed using HPLC. In DPPH and ABTS radicals scavenging capacities and cell-based antioxidant assay using erythrocytes, the extract, 1, protocatechuic acid (2), 2R,3R-dihydromyricetin (5), Massonianoside B (7) and myricetin-3-O-β-D-glucopyranoside (8) showed potent antioxidant activity. Moreover, the extract restored the activities of antioxidant enzymes and reduced the level of lipid peroxidation of liver homogenates in CCl4-treated mice in the in vivo antioxidant assay.
CONCLUSIONS:
Overall, these results suggest that C. deodara pine needle can be useful as a source of natural antioxidants for nutraceutical and functional food applications.
