2-(3,4-Dihydroxyphenyl)ethanol
2-(3,4-Dihydroxyphenyl)ethanol has antioxidant properties; it
is a potent specific inhibitor of lipoxygenase activities, it inhibits platelet 12-LO activity (IC50, 4.2 microM) and PMNL 5-LO activity (IC50, 13 microM) but not cyclooxygenase activity in cell-free conditions; it also inhibits 12-LO activity in intact platelets (IC50, 50 microM) and reduces leukotriene B4 production in intact PMNL stimulated by A23187 (IC50, 26 microM).
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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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Medicines (Basel) . 2018 Jan 23;5(1):13.
Hydroxytyrosol: Health Benefits and Use as Functional Ingredient in Meat[Pubmed:
29360770]
Abstract
Hydroxytyrosol (HXT) is a phenolic compound drawn from the olive tree and its leaves as a by-product obtained from the manufacturing of olive oil. It is considered the most powerful antioxidant compound after gallic acid and one of the most powerful antioxidant compounds between phenolic compounds from olive tree followed by oleuropein, caffeic and tyrosol. Due to its molecular structure, its regular consumption has several beneficial effects such as antioxidant, anti-inflammatory, anticancer, and as a protector of skin and eyes, etc. For these reasons, the use of HXT extract is a good strategy for use in meat products to replace synthetics additives. However, this extract has a strong odour and flavour, so it is necessary to previously treat this compound in order to not alter the organoleptic quality of the meat product when is added as ingredient. The present review exposes the health benefits provided by HXT consumption and the latest research about its use on meat. In addition, new trends about the application of HXT in the list of ingredients of healthier meat products will be discussed.
Keywords: antimicrobial; antioxidant; health; hydroxytyrosol; meat; preservative.
Drug Chem Toxicol. 2014 Oct;37(4):420-6.
Antioxidant role of hydroxytyrosol on oxidative stress in cadmium-intoxicated rats: different effect in spleen and testes.[Pubmed:
24437686 ]
Hydroxytyrosol (2-(3,4-Dihydroxyphenyl)ethanol, (DPE), a phenolic compound present in olive oil, is known to have antioxidant properties.
METHODS AND RESULTS:
The aim of this study was to investigate the effect of DPE on oxidative stress induced by cadmium injections (CdCl2 2.5 mg/kg body weight) in spleen and testes of adult male rats. Oxidative stress was evaluated by measuring lipid peroxidation by thiobarbituric acid reactive substances (TBARS) as well as superoxide dismutase (SOD) and catalase (CAT) activities in cytosol and mitochondria. We found that in spleen no TBARS formation was detected following CdCl2 injections; however, DPE induces decrease in TBARS level in treated and untreated rats. On the contrary, we observed that DPE showed no effect on cadmium-induced lipid peroxidation in testes. Cytosolic activities of SOD and CAT decreased significantly only in spleen, where DPE restores the values to the control levels. Noteworthy, mitochondrial activities of SOD and CAT were strongly reduced by cadmium treatment both in spleen and testes, and DPE was not be able to restore their activity.
CONCLUSIONS:
Overall, the results from this study indicated that the DPE has different antioxidant efficiency in spleen and testis of cadmium intoxicated rats.
Biosci Biotechnol Biochem. 1997 Feb;61(2):347-50.
Inhibition of arachidonate lipoxygenase activities by 2-(3,4-dihydroxyphenyl)ethanol, a phenolic compound from olives.[Pubmed:
9058975]
METHODS AND RESULTS:
The effects of olive fruit extract on arachidonic acid lipoxygenase activities were investigated using rat platelets and rat polymorphonuclear leukocytes (PMNL). Olive extract strongly inhibited both 12-lipoxygenase (12-LO) and 5-lipoxygenase (5-LO) activities. One of the compounds responsible for this inhibition was purified and identified as 2-(3,4-Dihydroxyphenyl)ethanol (DPE). 2-(3,4-Dihydroxyphenyl)ethanol inhibited platelet 12-LO activity (IC50, 4.2 microM) and PMNL 5-LO activity (IC50, 13 microM) but not cyclooxygenase activity in cell-free conditions. It also inhibited 12-LO activity in intact platelets (IC50, 50 microM) and reduced leukotriene B4 production in intact PMNL stimulated by A23187 (IC50, 26 microM). The inhibition by 2-(3,4-Dihydroxyphenyl)ethanol of both lipoxygenase activities was stronger than that by oleuropein, caffeic acid, or 7 other related phenolic compounds, especially in intact cells.
CONCLUSIONS:
These results suggest that 2-(3,4-Dihydroxyphenyl)ethanol is a potent specific inhibitor of lipoxygenase activities.
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