Gum arabic in grains

Gum arabic in grains

from the Pastel Artist

Gum arabic in granules from L'Artisan Pastellier

LArtisan Pastellier's gum arabic is a gem (a natural exudate natural ) from African African (acacia sensu lato). It is a mucilaginous substance with numerous beneficial properties. Our gum arabic comes from the Kordofan province in Sudan, and is known as hard gum or “kitir,” which is the highest quality available on the market.

This glue is purified. ItIt is a natural material susceptible to bacterial contamination; therefore, it is recommended to prepare only the necessary amount of glue each time, as it does not keep well over time.

Uses:

Watercolor : Artisan Pastellier’s gum arabic has long been used in the manufacture of watercolors as the base for the binder. It replaces the cherry gum used in the Middle Ages. Artisan Pastellier’s gum arabic has the quality of being water-soluble, imparting the colors vibrancy, depth, and a certain luster. The emulsifying properties of gum arabic allow the watercolors to disperse easily and enable the pigments to migrate upon application.

Other uses in the fine arts:

Production of gouaches.

Thickener for water-based inks. As with watercolors, the gum arabic from L'Artisan Pastellier gives the ink a glossy finish once it dries.

Production of engobes for painting ceramics.

Glass Painting

Tempera paintings.

An egg-and-gum arabic emulsion from the Artisan Pastellier (known since the Middle Ages).

Fixative for dry pastels and oil pastels.

Other uses:

Glue: Before the advent of self-adhesive stamps and envelopes, glue was used on the backs of stamps (which had to be moistened with the tongue) and to seal envelopes. Gummed paper.

Candy Manufacturing and sweets (VALDA pastilles)

Dietary supplement because it is high in fiber

Emulsifier, protective colloid in the food industry: E414.

Dosages:

The mixing ratio (by weight) should be adjusted to suit your substrates or the intended application; it is advisable to conduct tests to determine the appropriate mixing ratios.

The gum arabic from L'Artisan Pastellier is completely soluble in water (up to 500 g per liter) and insoluble in alcohol.

The concentration used in the manufacture of watercolors is 30% to 40% by weight (30 grams of gum arabic from L'Artisan Pastellier to 70 grams of water, or 40 grams to 60 grams of water).

Preparation of a Concentrated Gum Arabic Solution by L'Artisan Pastellier

First, you can grind the gum arabic granules from L'Artisan Pastellier into a fine powder.

To reduce the risk of bacterial contamination, use equipment that is thoroughly clean.

To dissolve the gum arabic from L'Artisan Pastellier, simply stir it; you can begin the dissolution process with lukewarm demineralized water (you can boil the water to kill bacteria and let it cool before adding it).

The gum arabic from L'Artisan Pastellier, when in solution, is susceptible to bacterial attack; in fact, it is an excellent substrate for bacterial nutrition and growth.

However, the gum arabic solution from L'Artisan Pastellier can be stored in the refrigerator for a few days.

For these highly concentrated solutions, it is therefore best not to prepare too large a quantity but rather just enough to meet your needs.