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Maceration principles

That the degree of comminution on its own is not the only factor involved in the kinetics-of the release of the active principles, but that evidently the nature and amount of the accompanying substances also play an essential part, has been demonstrated in the case of the sennosides in aqueous preparations (hot extractions and cold macerates) from senna fruits and senna leaves [3],... [Pg.25]

Garlic supplements - powder tablets or capsules, steam-distilled oil, vegetable oil macerate extract, or extract aged in dilute alcohol - are widely available and are taken by millions. Since the active principle, allicin, is not present in garlic bulb, the supplements rely on the presence of precursor alliin and enzyme alliinase. In tests on 24 commercial brands of enteric-coated tablets, all except one gave low dissolution allicin release 83% of the brands released less than 15% of their potential allicin.78,79 Relevant factors were impaired enzyme activity caused by excipients and slow tablet disintegration. Caveat emptor ... [Pg.691]

A number of studies have focused on identifying the active antimicrobial principles in fresh garlic extract. Allicin has been identified as the active agent in garlic extracts. The antifungal activity of allicin has been shown to depend on the sulfhydryl moiety because activity is destroyed by thiols such as L-cysteine, glutathione, and mercaptoethanol. Ajoene, a compound found in oil-macerated garlic, has also been shown to have antimicrobial activity (Ali et al., 2000). [Pg.483]

A variety of solvent extraction techniques have been used to extract antioxidants from food matrices. The most commonly used is maceration or homogenization of the sample with an extraction solvent however, alternative procedures have been developed including pressurized fluid extraction (PFE), ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE), and matrix solid-phase dispersion (MSPD), among others. The principles of each extraction technique will be briefly discussed. [Pg.29]

Kava is an attractive shrub (Figure 1.1) that is propagated vegetatively, as are most of the traditional Pacific crops. The active principles are a group of psychoactive chemicals called kavalactones or kavapyrones (Chapter 5), which are concentrated mostly in the rhizome and roots, and in other parts of the plants to a lesser extent. The desired physiological effects are obtained by ingesting the active compounds present in cold-water infusions of ground, macerated, pounded, or sometimes chewed kava stumps and roots. [Pg.1]

Dig estion is a prolonged infusion which is usually conducted at a medium temperature between that required for an iu/wsiow, properly so called, and that of a maceration. Its object is usually to impregnate alcohol with the principles of a substance which would bo but slowly extracted without the aid of a certain amount of heat, such as that of the sun or of hot ashes. [Pg.227]

Spirit of Peppermint, An alcoholic soln contg psr liter 100 ml oil of peppermint and the alcohol-soluble principles from 10 g of powdered peppermint previously macerated with water. [Pg.1381]

In line with the principle, like dissolves like, one might think that the most suitable solvent for the extraction of water-soluble compounds is water. More often than not, however, simple maceration of fresh biological material with water or aqueous buffers fails to extract water-soluble compounds because they are mostly stored in protected states. The mechanism of such protection is varied binding to the membranes, compartmentalization, protection by lipophilic... [Pg.329]

The basic principles of wound management are maintaining a moist environment at the wound surface (Pivec et al., 2014) and the removal of excess fluid from wound skin to prevent maceration or erosion of the wounds. The ability of a dressing to manage exudates and prevent maceration during healing is one of the most desirable properties for the cavity wound dressings (Bulck, 2008 Uzun, Anand, Shah, 2014). [Pg.242]

TINCTURES. Alcoholic or hydroalcoholic solutions usually containing the active principles of botanicals in comparatively low concentrations. They are generally prepared either by maceration or percolation or by dilution of their corresponding fluid extracts or native extracts. The strengths of tinctures are generally 1 0.1 or 1 0.2 TNF-a. Tumor necrosis factor alpha TPA. 12-0-Tetradecanoylphorbol-13-acetate TRP-p-1. 3-Amino- l,4-dimethyl-5//-pyrido... [Pg.699]


See other pages where Maceration principles is mentioned: [Pg.14]    [Pg.388]    [Pg.211]    [Pg.209]    [Pg.146]    [Pg.363]    [Pg.31]    [Pg.358]    [Pg.373]    [Pg.493]    [Pg.487]    [Pg.124]    [Pg.948]    [Pg.343]    [Pg.90]    [Pg.21]    [Pg.43]    [Pg.31]    [Pg.56]    [Pg.282]    [Pg.290]    [Pg.379]    [Pg.1254]    [Pg.1534]    [Pg.242]    [Pg.152]    [Pg.125]    [Pg.764]    [Pg.447]    [Pg.347]    [Pg.385]    [Pg.385]    [Pg.414]    [Pg.476]    [Pg.90]   


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Maceral

Macerals

Macerate

Macerating

Maceration

Macerator

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