The royal jelly is the product of glandular secretion system cephalad (hypopharyngiennes glands and mandibular glands) honeybee workers, between the fifth and fourteenth day of their lives (workers who bear the name of nurses). It is a whitish substance nacrés the glare, a gelatinous consistency, taste hot, acidic and very sweet, which is the exclusive food:
* All the larvae of the colony, without exception, their hatching until the third day of their lives;
* Larvae chosen to become queen until the fifth day of their lives;
* Queen of the colony throughout its existence from the day she left the royal cell.
Composition of royal jelly
The royal jelly contains on average:
* Fat: 4.5%
* Carbohydrates: 14.5%, glucose and fructose for the most part, and significantly smaller proportions of sucrose, maltose, the erlose, trehalose and mélibiose.
* Proteins: 13% (amino acids in a free state or combined)
* Water approximately 66%.
There are also vitamins (royal jelly is the natural product known as that is rich in vitamin B5), trace elements, acetylcholine (up to 1 mg / g), factors antibiotics particularly active on proteus and the escherichia coli B (known as E. coli).
Harvest and conservation of royal jelly
The production of royal jelly makes use of specific techniques, because bees produce just the amount needed to brood rearing and is not stored. It is practiced by beekeepers specialist. The hives are conducted as for breeding queen, the hive is made an orphan by removing the queen. Frameworks are placed in the hive with rough royal cells in which the beekeeper has larvae workers aged 12 to 36 hours. The workers will give these drafts the final size of cells queens. The nurses serve as royal jelly in abundance the young larvae. After 3 days cells have reached their maximum abundance. The frames are then removed, royal jelly is removed by suction cell by cell. A hive can give a maximum of 300 grams of ice per year.
Upon removal, royal jelly is put into glass vials. Bottles that are hermetically sealed by a plastic cap (the metal is attacked because the royal jelly is acidic and has a pH of 4) and then stored cold (between 2 and 5 degrees C) in an atmosphere free of moisture and the dark. Under such conditions, royal jelly will keep perfectly for several months.
Effects on human health
The royal jelly contains a considerable proportion of protein, amino acids, lipids, vitamins and sugars, and is also known for having various nutritional and pharmacological on humans.
In reality, few scientific studies have highlighted the benefits of royal jelly on human health. Anyway, a few experiments in vivo and in vitro have found:
* A vasodilator and hypotensive.
* Anticholestérolémique activity.
* An anticarcinogenic effect.
The benefits of royal jelly on postmenopausal women was also quoted by a Japanese clinical study, given the latter's production of estrogen. However, knowledge about the pharmacological implications in the long term linked to the consumption of royal jelly on postmenopausal women, as well as humans in general, are still insufficient.
Regarding possible negative implications on human health, only one case of intestinal inflammation associated with diarrhoea was postponed in Japan in 1997 after consumption of royal jelly 10ml per day for 25 days, on an older woman. This case, linked to excessive consumption of royal jelly, remains isolated, to say the least.
The wasps are also able to produce royal jelly, but not use them only in cases of force majeure (death of the queen and any potential queen available). The singers often use it to relax the vocal cords, the mixture of sweet and acid would make it a miracle cure!
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