definición y significado de tincture | sensagent.com


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alemán árabe búlgaro checo chino coreano croata danés eslovaco esloveno español estonio farsi finlandés francés griego hebreo hindù húngaro indonesio inglés islandés italiano japonés letón lituano malgache neerlandés noruego polaco portugués rumano ruso serbio sueco tailandès turco vietnamita

Definición y significado de tincture

Definición

tincture (n.)

1.(pharmacology) a medicine consisting of an extract in an alcohol solution

2.a quality of a given color that differs slightly from another color"after several trials he mixed the shade of pink that she wanted"

3.an indication that something has been present"there wasn't a trace of evidence for the claim" "a tincture of condescension"

4.a substances that colors metals

5.a usually soluble substance for staining or coloring e.g. fabrics or hair

tincture (v.)

1.stain or tint with a color"The leaves were tinctured with a bright red"

2.fill, as with a certain quality"The heavy traffic tinctures the air with carbon monoxide"

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Merriam Webster

TinctureTinc"ture (?), n. [L. tinctura a dyeing, from tingere, tinctum, to tinge, dye: cf. OE. tainture, teinture, F. teinture, L. tinctura. See Tinge.]
1. A tinge or shade of color; a tint; as, a tincture of red.

2. (Her.) One of the metals, colors, or furs used in armory.

☞ There are two metals: gold, called or, and represented in engraving by a white surface covered with small dots; and silver, called argent, and represented by a plain white surface. The colors and their representations are as follows: red, called gules, or a shading of vertical lines; blue, called azure, or horizontal lines; black, called sable, or horizontal and vertical lines crossing; green, called vert, or diagonal lines from dexter chief corner; purple, called purpure, or diagonal lines from sinister chief corner. The furs are ermine, ermines, erminois, pean, vair, counter vair, potent, and counter potent. See Illustration in Appendix.

3. The finer and more volatile parts of a substance, separated by a solvent; an extract of a part of the substance of a body communicated to the solvent.

4. (Med.) A solution (commonly colored) of medicinal substance in alcohol, usually more or less diluted; spirit containing medicinal substances in solution.

☞ According to the United States Pharmacopœia, the term tincture (also called alcoholic tincture, and spirituous tincture) is reserved for the alcoholic solutions of nonvolatile substances, alcoholic solutions of volatile substances being called spirits.

Ethereal tincture, a solution of medicinal substance in ether.

5. A slight taste superadded to any substance; as, a tincture of orange peel.

6. A slight quality added to anything; a tinge; as, a tincture of French manners.

All manners take a tincture from our own. Pope.

Every man had a slight tincture of soldiership, and scarcely any man more than a slight tincture. Macaulay.

TinctureTinc"ture, v. t. [imp. & p. p. Tinctured (?); p. pr. & vb. n. Tincturing.]
1. To communicate a slight foreign color to; to tinge; to impregnate with some extraneous matter.

A little black paint will tincture and spoil twenty gay colors. I. Watts.

2. To imbue the mind of; to communicate a portion of anything foreign to; to tinge.

The stain of habitual sin may thoroughly tincture all our soul. Barrow.

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Definición (más)

definición de tincture (Wikipedia)

Sinónimos

Ver también

tincture (n.)

tinct, tinge, tint, tone, touch dye

Frases

Diccionario analógico

tincture (n.)

iode (fr)[Thème]









Wikipedia

Tincture

                   
  A tincture prepared from white willow bark and ethanol

A tincture is typically an alcoholic extract of plant or animal material or solution of such or of a low volatility substance (such as iodine and mercurochrome). To qualify as an alcoholic tincture, the extract should have an ethanol percentage of at least 40-60% or 80-120 proof. Sometimes even a 90% or 180 proof tincture is achieved.[1] In herbal medicine, alcoholic tinctures are made with various concentrations of ethanol, 25% being the most common. Other concentrations include 45% and 90%.

Herbal tinctures are not always made using ethanol as the solvent, though this is most commonly the case. Other solvents include vinegar, glycerol, ether and propylene glycol, not all of which can be used for internal consumption. However, when a solvent's pH is a major consideration, ethanol has the advantage of being very close to neutral, so is an excellent choice as a passive, or chemically nonreactive, solvent for both acidic and basic (alkaline) constituents.
Glycerine can also be used passively, but is generally a poorer solvent. Vinegar, being acidic, is a better solvent for obtaining alkaloids but a poorer solvent for acidic components, so results in increased extraction of any alkaloids which might be present in the starting material. For individuals who chose not to imbibe alcohol, non-alcoholic e,g., (glycerite) extracts offer an alternative for preparations meant to be taken internally.

Alcohol cannot be subjected to high temperatures, so its use is considered a 'non-critical' passive methodology. Glycerol, utilized in a non-critical fashion as it was in early Eclectic medicine studies, is typically seen as inferior to alcohol, whereas if glycerol is subjected to an innovative serialized methodology now catching on in the industry, the tincturing potential of glycerol is quite astounding. Therefore, newer glycerite products are showing great promise and even rivaling alcoholic tinctures in many ways.

Some solutions of volatile or nonvolatile substances are traditionally called spirits, regardless of whether obtained by distillation or not and whether or not they even contain alcohol. In chemistry, a tincture is a solution that has alcohol as its solvent.

Contents

  General method of preparation

  • Herbs are put in a container and a spirit of 40% or more ethanol is added, 80 proof Vodka or 190 proof Everclear, for example.
  • The jar is left to stand for 2–3 weeks and shaken occasionally in order to maximize extraction.

More accurate measuring can be done by combining 1 part herbs with a water-ethanol mixture of 2-10 parts, depending on the herb itself. For most tinctures, however, 1 part water to 5 parts ethanol is typical.[1]

  Examples of tinctures

Some examples that were formerly common in medicine[2] include:

Examples of spirits include:

  Advantages of tinctures

Ethanol is able to dissolve substances which are less soluble in water, while at the same time the water content can dissolve the substances less soluble in ethanol. One can sometimes vary the proportion of ethanol and water to produce tinctures with different characteristics due to the distinct solvent properties of these two. Tincture of calendula is commonly tinctured at either 25% or 90% ethanol. The alcohol content also acts as a preservative.

  Disadvantages of tinctures

Ethanol has a tendency to denature some organic compounds, rendering them so changed as to be ineffective. This is one reason why ethanol is an antimicrobial. This tendency can also have undesirable effects when extracting botanical constituents, for instance, polysaccharides. Certain other constituents, common among them proteins, can become irreversibly "cooked" or "pickled" in a manner of speaking. A basic tenet of organic chemistry teaches that anytime a biologically viable component is denatured, it will reduce or negate its prior biological viability. This fact must be considered by the clinician and/or consumer from both the standpoint of efficacy and dosage when choosing ethanol-based botanical tinctures.

Although ether and propylene glycol based tinctures are not suitable for internal consumption, they are used in preparations such as personal care cremes and ointments.

  See also

  • Nalewka - a traditional Polish category of alcoholic tincture.
  • Infusion - a water or oil based extract with similar historical uses to a tincture.
  • Elixir - A pharmaceutical preparation containing an active ingredient that is dissolved in a solution containing some percentage of ethyl alcohol.
  • Extract
  • Topical - categorization of topical skin preparation options

  References

  1. ^ a b Groot Handboek Geneeskrachtige Planten by Geert Verhelst
  2. ^ The Pharmacopoeia of the United States, 1850 ed.
   
               

 

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