Skip to content
LUVEX VENDOR-NEUTRAL
LoginRegister

Egg UV-C surface disinfection

Salmonella reduction on the eggshell without chemicals

disinfection ✓ LUVEX-verified ✓ Confidence high (textbook/standard) FoodEggsPoultry ConveyorInline Food safetyChemistry-freeNorm compliance

Microbiological effect

Wavelength254 nm
D-value (1-log)4.5 mJ/cm²
Log reduction (typ.)4-log
Contact time2 s
Human safety ⚠ NOT skin-safe — worker protection required
Target pathogens Salmonella enteritidisE. coliListeria monocytogenes

01 Why UV-C here?

UV-C irradiation of egg surfaces on grading and packing lines reduces Salmonella enteritidis and other surface pathogens by 4-log at 18 mJ/cm² (Bintsis 2000). The ban on treating the food itself (LMBestrV) is met automatically, because the UV penetration depth is limited to the shell.

Practiced on large grading lines since the 1990s; a per-facility special authorization from the federal authorities is required.

02a Feature — what IS it?

  • UV-C 254 nm low-pressure mercury

    ~85% output dominant at 254 nm

    30-200 W lamps mounted above the belt with a reflector.

02b Advantage — vs. alternatives

  • No chemical residues

    vs. H2O2 spray

    Unlike an H2O2 wash, no residue in the egg.

02c Benefit — what does the customer get?

  • Salmonella reduction

    4-log @ 18 mJ/cm²

    4-log at 18 mJ/cm², 254 nm

  • No chemical residues

    0 ppm

    Unlike an H2O2 wash, no residue in or on the egg.

03 Where is it used?

Use cases Egg grading centersPoultry slaughterhousesPacking lines for fresh eggs
Audience Egg processors with a BVL special authorizationHygiene officers in food production

04 How does it work?

  1. 1
    Eggs pass along the belt under UV-C lamps

    Dwell time 1-3 s depending on belt speed

  2. 2
    254 nm UV-C destroys surface DNA

    Penetration depth < 10 µm into the shell structure

  3. 3
    Salmonella + other pathogens inactivated

    The egg interior is unaffected

05 Standards

LMBestrV §3 Abs. 1 Nr. 4BVL-Empfehlung 2018

Installation notes

  • Match belt speed to UV output (dwell time is essential)
  • Lamp/reflector geometry for all-around irradiation
  • Lifetime monitoring with a spectrometer

⚠ Worker-safety notes

  • UV-C safety goggles EN 170 during maintenance
  • Lamp interlock on the belt enclosure
  • Observe the ICNIRP TLV

Scientific references

  1. Bintsis 2000 — UV-C Egg Surface Decontamination
    Bintsis T. · 2000 · paper

Engineering recommendation — lamp choice rationale

Mercury

Low-pressure mercury emitters at 254 nm are the proven standard choice on egg lines. UV-C LEDs at 270 nm are not yet consistently established industrially.

Plan your project with this

Discussion — Egg UV-C surface disinfection

Ask a new question

Loading discussion…