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Dihydrocurcumin
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Product Name Dihydrocurcumin
Price: $368 / 5mg
CAS No.: 76474-56-1
Catalog No.: CFN99540
Molecular Formula: C21H22O6
Molecular Weight: 370.40 g/mol
Purity: >=98%
Type of Compound: Phenols
Physical Desc.: Powder
Source: The rhizomes of Curcuma longa L.
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
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Related Screening Libraries
Size /Price /Stock 10 mM * 100 uL in DMSO / Inquiry / In-stock
10 mM * 1 mL in DMSO / Inquiry / In-stock
Related Libraries
Biological Activity
Description: Dihydrocurcumin is an intermediate product converted from curcumin.
In vitro:
J Agric Food Chem. 2014 Nov 12;62(45):11005-15.
Degradation of curcuminoids by in vitro pure culture fermentation.[Pubmed: 25317751]
Colonic bacteria may mediate the transformation of curcuminoids, but studies of this metabolism are limited.
METHODS AND RESULTS:
Here, the metabolism of curcuminoids by Escherichia fergusonii (ATCC 35469) and two Escherichia coli strains (ATCC 8739 and DH10B) was examined in modified medium for colon bacteria (mMCB) with or without pig cecal fluid. LC-MS analysis showed that 16-37% of curcumin, 6-16% of demethoxycurcumin (DMC) and 7-15% of bis-demethoxycurcumin (Bis-DMC), and 7-15% of bis-demethoxycurcumin (Bis-DMC) were converted following 36 h of fermentation, with the amount of curcuminoids degraded varying depending on the bacterial strain and medium used. Three metabolites (Dihydrocurcumin (DHC), tetrahydrocurcumin (THC), and ferulic acid (FA)) were found in fermentation cultures with all strains used. In addition, a compound with m/z [M - H](-) 470 was found and identified to be a curcumin adduct (curcumin-l-cysteine), using accurate mass FT-ICR-MS.
CONCLUSIONS:
This study provides insights into the bacterial metabolism of curcuminoids.
Proc Natl Acad Sci U S A. 2011 Apr 19;108(16):6615-20.
Discovery of the curcumin metabolic pathway involving a unique enzyme in an intestinal microorganism.[Pubmed: 21467222]
Polyphenol curcumin, a yellow pigment, derived from the rhizomes of a plant (Curcuma longa Linn) is a natural antioxidant exhibiting a variety of pharmacological activities and therapeutic properties. It has long been used as a traditional medicine and as a preservative and coloring agent in foods.
METHODS AND RESULTS:
Here, curcumin-converting microorganisms were isolated from human feces, the one exhibiting the highest activity being identified as Escherichia coli. We are thus unique in discovering that E. coli was able to act on curcumin. The curcumin-converting enzyme was purified from E. coli and characterized. The native enzyme had a molecular mass of about 82 kDa and consisted of two identical subunits. The enzyme has a narrow substrate spectrum, preferentially acting on curcumin. The microbial metabolism of curcumin by the purified enzyme was found to comprise a two-step reduction, curcumin being converted NADPH-dependently into an intermediate product, Dihydrocurcumin, and then the end product, tetrahydrocurcumin.
CONCLUSIONS:
We named this enzyme "NADPH-dependent curcumin/Dihydrocurcumin reductase" (CurA). The gene (curA) encoding this enzyme was also identified. A homology search with the BLAST program revealed that a unique enzyme involved in curcumin metabolism belongs to the medium-chain dehydrogenase/reductase superfamily.
Biomed Pharmacother . 2018 Jul;103:1327-1336.
Dihydrocurcumin ameliorates the lipid accumulation, oxidative stress and insulin resistance in oleic acid-induced L02 and HepG2 cells[Pubmed: 29864915]
Abstract Aims: Curcumin is a polyphenol compound with many pharmacological activities including antioxidant, lipid-loweing and liver protective. Dihydrocurcumin (DHC) is one of the major metabolites of curcumin. So far, the pharmacological activity of DHC has not been reported. Here, we evaluate the effects of DHC on oleic acid (OA)-induced lipid accumulation, oxidative stress and insulin resistance and the underlying mechanism in L02 and HepG2 cells. Main methods: OA-induced L02 and HepG2 cells were used as the in vitro model of nonalcoholic fatty liver disease (NAFLD). Lipid accumulation, oxidative stress, glucose uptake and cell inflammation were evaluated by cellular biochemical assay, respectively. Signaling pathways involved in lipid metabolism including peroxisome proliferator activated receptor-α (PPARα), the sterol regulatory element binding protein-1C (SREBP-1C) and patatin-like phospholipase domain containing 3 (PNPLA3), glucose uptake including phosphatidylinositol 3-kinase (PI3K) and phosphorylated serine-threonine protein kinase (pAKT), and oxidative stress including nuclear factor E2-related factor 2 (Nrf2), cytochrome P450 4A (CYP4A) and 2E1 (CYP2E1) were investigated by western blotting and RT-qPCR, respectively. Key findings: DHC decreased the levels of cellular triglycerides (TG) by regulating the mRNA and protein expression levels of SREBP-1C, PNPLA3 and PPARα. At the same time, DHC improved the hepatocellular glucose uptake by increasing the protein expression levels of pAKT and PI3K. Furthermore, DHC reduced the levels of cellular NO and ROS via Nrf2 signaling pathways. Significance: The present study firstly revealed that DHC ameliorated OA-induced steatosis through regulating the lipid metabolism, oxidative stress and insulin resistance in HepG2 and L02 cells. Keywords: Dihydrocurcumin; Insulin resistance; Lipid metabolism; NAFLD; Oxidative stress.
Dihydrocurcumin Description
Source: The rhizomes of Curcuma longa L.
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Storage: 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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After receiving: 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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Recently, ChemFaces products have been cited in many studies from excellent and top scientific journals

Cell. 2018 Jan 11;172(1-2):249-261.e12.
doi: 10.1016/j.cell.2017.12.019.
IF=36.216(2019)

PMID: 29328914

Cell Metab. 2020 Mar 3;31(3):534-548.e5.
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Calculate Dilution Ratios(Only for Reference)
1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.6998 mL 13.4989 mL 26.9978 mL 53.9957 mL 67.4946 mL
5 mM 0.54 mL 2.6998 mL 5.3996 mL 10.7991 mL 13.4989 mL
10 mM 0.27 mL 1.3499 mL 2.6998 mL 5.3996 mL 6.7495 mL
50 mM 0.054 mL 0.27 mL 0.54 mL 1.0799 mL 1.3499 mL
100 mM 0.027 mL 0.135 mL 0.27 mL 0.54 mL 0.6749 mL
* Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
Protocol
Kinase Assay:
Arch Pharm Res. 2004 Jul;27(7):683-92.
Suppression of protein kinase C and nuclear oncogene expression as possible action mechanisms of cancer chemoprevention by Curcumin.[Pubmed: 15356994]
Curcumin (diferuloylmethane) is a major naturally-occurring polyphenol of Curcuma species, which is commonly used as a yellow coloring and flavoring agent in foods. Curcumin has shown anti-carcinogenic activity in animal models. Curcumin possesses anti-inflammatory activity and is a potent inhibitor of reactive oxygen-generating enzymes such as lipoxygenase/cyclooxygenase, xanthine dehydrogenase/oxidase and inducible nitric oxide synthase; and an effective inducer of heme oxygenase-1. Curcumin is also a potent inhibitor of protein kinase C (PKC), EGF(Epidermal growth factor)-receptor tyrosine kinase and IkappaB kinase. Subsequently, curcumin inhibits the activation of NF(nucleor factor)kappaB and the expressions of oncogenes including c-jun, c-fos, c-myc, NIK, MAPKs, ERK, ELK, PI3K, Akt, CDKs and iNOS.
METHODS AND RESULTS:
It is proposed that curcumin may suppress tumor promotion through blocking signal transduction pathways in the target cells. The oxidant tumor promoter TPA activates PKC by reacting with zinc thiolates present within the regulatory domain, while the oxidized form of cancer chemopreventive agent such as curcumin can inactivate PKC by oxidizing the vicinal thiols present within the catalytic domain. Recent studies indicated that proteasome-mediated degradation of cell proteins play a pivotal role in the regulation of several basic cellular processes including differentiation, proliferation, cell cycling, and apoptosis. It has been demonstrated that curcumin-induced apoptosis is mediated through the impairment of ubiquitin-proteasome pathway. Curcumin was first biotransformed to Dihydrocurcumin and tetrahydrocurcumin and that these compounds subsequently were converted to monoglucuronide conjugates.
CONCLUSIONS:
These results suggest that curcumin-glucuronide, Dihydrocurcumin-glucuronide, tetrahydrocurcumin-glucuronide and tetrahydrocurcumin are the major metabolites of curcumin in mice, rats and humans.
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