Significations et usages de beeswax

 

  A beekeeper from Vojka, Serbia making a bee hive frame.

  Beeswax cake

  Uncapping beeswax honeycombs

  Fresh wax scales (in the middle of the lower row)

Beeswax is a natural wax produced in the bee hive of honey bees of the genus Apis. It is mainly esters of fatty acids and various long chain alcohols. Typically, for a honey beekeeper, 10 pounds of honey yields 1 pound of wax.^[1]

  Production

The wax is formed by worker bees (the females), who secrete it from eight wax-producing mirror glands on the inner sides of the sternites (the ventral shield or plate of each segment of the body) on abdominal segments 4 to 7. The sizes of these wax glands depend on the age of the worker and after daily flights begin these glands gradually atrophy. The new wax scales are initially glass-clear and colorless (see illustration), becoming opaque after mastication by the worker bee. The wax of honeycomb is nearly white, but becomes progressively more yellow or brown by incorporation of pollen oils and propolis. The wax scales are about 3 millimetres (0.12 in) across and 0.1 millimetres (0.0039 in) thick, and about 1100 are required to make a gram of wax.^[2]

Honey bees use the beeswax to build honeycomb cells in which their young are raised and honey and pollen are stored. For the wax-making bees to secrete wax, the ambient temperature in the hive has to be 33 to 36 °C (91 to 97 °F). To produce their wax, bees must consume about eight times as much honey by mass. It is estimated that bees fly 150,000 miles, roughly six times around the earth, to yield one pound of beeswax (530,000 km/kg).

  Processing

When beekeepers extract the honey, they cut off the wax caps from each honeycomb cell with an uncapping knife or machine. Its color varies from nearly white to brownish, but most often a shade of yellow, depending on purity and the type of flowers gathered by the bees. Wax from the brood comb of the honey bee hive tends to be darker than wax from the honeycomb. Impurities accumulate more quickly in the brood comb. Due to the impurities, the wax has to be rendered before further use. The leftovers are called slumgum.

The wax may further be clarified by heating in water. As with petroleum waxes, it may be softened by dilution with vegetable oil to make it more workable at room temperature.

  Physical characteristics

Beeswax is a tough wax formed from a mixture of several compounds.

An approximate chemical formula for beeswax is C₁₅H₃₁COOC₃₀H₆₁.^[3] Its main components are palmitate, palmitoleate, hydroxypalmitate^[4] and oleate esters of long-chain (30-32 carbons) aliphatic alcohols, with the ratio of triacontanyl palmitate CH₃(CH₂)₂₉O-CO-(CH₂)₁₄CH₃ to cerotic acid^[5] CH₃(CH₂)₂₄COOH, the two principal components, being 6:1. Beeswax can be classified generally into European and Oriental types. The ratio of saponification value is lower (3-5) for European beeswax, and higher (8-9) for Oriental types.

Beeswax has a high melting point range, of 62 to 64 °C (144 to 147 °F). If beeswax is heated above 85 °C (185 °F) discoloration occurs. The flash point of beeswax is 204.4 °C (399.9 °F).^[6] Density at 15 °C is 958 to 970 kg/m³.

Natural beeswax (quoting Thorpe 1916 p737)^[7]: When cold it is brittle; at ordinary temperatures it is tenacious; its fracture is dry and granular. The sp. gr. at 15° is from 0.958 to 0.975, that of melted wax at 98° - 99° compared with water at 15.5° is 0.822. It softens when held in the hand, and melts at 62° - 66°; it solidifies at 60.5° -63°.

  Uses as a product

  Beeswax candles and figures

• Beeswax is mainly used to make honeycomb foundation for reuse by the bees.
• Purified and bleached beeswax is used in the production of food, cosmetics, and pharmaceuticals:
  • As a coating for cheese, to protect the food as it ages. As a food additive, it is known as E901 (glazing agent).
  • As a skin care product, a German study found beeswax to be superior to similar "barrier creams" (usually mineral oil based creams, such as petroleum jelly), when used according to its protocol.^[8]
  • Beeswax is an ingredient in moustache wax, as well as hair pomades.
  • Beeswax is an ingredient in surgical bone wax.

• Candles
  • Beeswax was traditionally prescribed as the material (or at least a significant part of the material) for the Paschal candle ("Easter candle") and is recommended for other candles used in the liturgy of the Roman Catholic Church.^[9]
  • Beeswax is used commercially to make fine candles.

• Although only about 10,000 tons are produced annually, a variety of niche uses exist:^[10]
  • As a component of shoe polish
  • As a component of furniture polish, dissolved in turpentine, sometimes blended with linseed or tung oil
  • As a component of modeling waxes.
  • As a blended with pine rosin, beeswax serves as an adhesive to attach reed plates to the structure inside a squeezebox.
  • Used to make lip balm.
  • Used to make Cutler's resin.
  • Used in Eastern Europe in egg decoration. It is used for writing, via resist dyeing, on batik eggs (as in pysanky) and for making beaded eggs.
  • Formerly used in the manufacturing of the cylinders used by the earliest phonographs.
  • Used by percussionists to make a surface on tambourines for thumb rolls.

  Historical uses

  The oldest survived bees wax candles north of the Alps from the alamannic graveyard of Oberflacht, Germany dating to 6th/7th century A.D.

Beeswax was ancient humans' first plastic^[11] and for thousands of years had wide variety of uses, including:

• As a modeling material in the lost-wax casting process, or cire perdue.^[12]
• For wax tablets used for a variety of writing purposes.
• In Encaustic paintings such as the Fayum mummy portraits.^[13]
• Used in bow making (see English longbow).
• Used to strengthen and preserve sewing thread.
• As a component of sealing wax
• To form the mouthpieces of a didgeridoo, and the frets on the Philippine kutiyapi - a type of boat lute.
• As a sealant or lubricant for bullets in cap and ball and firearms
• To stabilize the military explosive Torpex - before being replaced by a petroleum-based product.
• In producing Javanese batik.^[14]
• Used to coat hemp strands in the making of Hemp Wick; an alternative use to Lighters.

  Slang

In the phrase "mind your own bee's wax," meaning "mind your own business". Possibly derived from the Irish Gaelic béasmhaireacht, pronounced beeswəraċt, meaning "morality, manners, habits." ^[15] Similar to the phrase Bees Knees.

  See also

Look up beeswax in Wiktionary, the free dictionary.

• Apis mellifera
• Ester
• Encaustic painting
• Paraffin
• Carnauba wax
• Bone wax
• Batik
• Pysanka
• Honeycomb
• Brood comb

  Notes

  References

• The chemistry of bees Joel Loveridge, School of Chemistry University of Bristol accessed November 2005