Royal Jelly Production

Royal jelly is a white to cream-coloured, viscous food secreted by glands in the head of young nurse worker bees (the hypopharyngeal and mandibular glands). Production is based on steering a strong colony as if it were rearing queens and harvesting the jelly that accumulates in grafted queen cups at about day three. It is a specialist field that demands labour, precise timing and an unbroken cold chain.

What is royal jelly and how is it made?

Royal jelly (queen bee jelly, bee milk) is secreted mainly by nurse bees aged 5–15 days. Nurse bees eat plenty of pollen in order to produce this secretion, so royal jelly production depends directly on the colony's pollen and protein status.

• Worker and drone larvae: Are fed a secretion similar to royal jelly for roughly the first three days, after which honey and pollen are mixed into their food.
• Queen larvae: Are fed abundant royal jelly throughout their development. The larva in a queen cell practically floats in a pool of jelly.

About two thirds of royal jelly is water; the rest consists of proteins, sugars and fatty acids. The fatty acid 10-HDA (10-hydroxy-2-decenoic acid), which is unique to royal jelly, is one of the main analytical criteria for the product's authenticity and quality.

The basic logic of royal jelly production

A populous unit that has been made queenless or separated from its queen feeds the young larvae it is given as queen candidates and fills the cups with plenty of jelly. Before the larva starts to consume this jelly, the cups are removed, the larva is taken out and the jelly is harvested. The same bars are cleaned and grafted again to keep a three-day cycle going.

How is royal jelly produced? Step by step

1. Prepare the starter colony: Choose a populous colony rich in young nurse bees, with plenty of honey and pollen stores. The queen is either removed entirely or kept away from the production section with a queen excluder.
2. Feed: Throughout production, the colony is given syrup regularly and, when necessary, pollen or a protein supplement. During a dearth, jelly yield drops quickly. No supers are on the hive during this period.
3. Transferring larvae (grafting): The youngest possible larvae (less than one day old) are transferred with a grafting tool into plastic or wax cups. The younger the larva, the higher the acceptance rate and the amount of jelly. Caged cup systems that do not require grafting are also used.
4. Give the cups to the colony: The grafted bars are placed between frames of young brood, where nurse bees are concentrated.
5. Wait about three days: About 72 hours after grafting, the jelly in the cup is at its maximum. If you wait longer, the larva consumes the jelly and the cell approaches capping.
6. Harvest: The bars are removed, the rims of the cups are trimmed, the larva is taken out with tweezers and the jelly is collected with a small spatula or a vacuum aspirator. Take care that no larval fragments or wax remain.
7. Chill immediately: The harvested jelly is chilled without delay in dark glass containers.

How much royal jelly does one queen cell produce?

The amount of jelly obtained from a single cup is very small; under good conditions it averages a few hundred milligrams per cup. So a meaningful quantity needs hundreds of cups per cycle, regular grafting and a meticulous schedule. The main factors determining yield are:

• Larval age: Younger larvae are accepted more often and receive more jelly.
• Nurse bee strength: The number of young bees and the pollen stores are directly decisive.
• Forage and feeding: Yield rises during periods of nectar and pollen flow.
• Genetics: Some lines deposit markedly more jelly.

The cold chain: an essential rule

Royal jelly is very sensitive to heat, light and air. It must be kept cold from the moment it is harvested.

• Working environment: Work in a cool, clean, shaded room with food-safe gloves and tools.
• Container: Use a dark, airtight glass jar; avoid prolonged contact with metal containers.
• Short term: Store in the refrigerator (0–5 °C).
• Long term: Store in the freezer (−18 °C or below); do not refreeze product that has thawed.

Royal jelly whose cold chain has been broken may look unchanged but loses quality. This is deterioration the buyer cannot detect; the responsibility lies entirely with the producer.

The cost to the colony

Royal jelly production is a heavy burden on the colony. A colony kept permanently queenless or semi-queenless wears out, its nurse bee strength is exhausted and brood rearing is disrupted.

• Protein support: Support the colony regularly with pollen or a suitable protein supplement.
• Rotation: Use starter colonies in rotation; boost them with frames of brood when necessary.
• Monitoring: Take a colony out of production when its acceptance rate and jelly yield fall.
• Medicines: No medicines are used in the colonies during the production period; any residue risk passes directly into the product.

Scale and the realities of the business

Royal jelly production should be planned not as a sideline but as a separate line of production. It requires grafting skill, a trained eye and steady hands, cold chain equipment and a regular workforce that repeats the work every three days. Knowledge of queen rearing is the foundation of this work; the two subjects are learned together.

Royal jelly and health

Royal jelly has a widespread traditional use, and laboratory studies on its components are ongoing. However, the evidence that it prevents or treats a specific disease in humans is limited; the product cannot be sold with treatment claims. Serious allergic reactions to royal jelly have been reported; people with a history of asthma or allergy in particular should consult a doctor before consuming it.