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Updated: Jun 30, 2026

Removal and Replacement of Endogenous Ligands from Lipid-Bound Proteins and Allergens
Published on: February 24, 2021
[The enzyme papain in industry and food causes allergic sensitization]
Anette Pagh Rosenthal1, Morten Bruland Blønd
1Arbejdsmedicinsk Klinik, Nordsjaellands Hospital, Hillerød, DK-3400 Hillerød. apro@noh.regionh.dk
Abstract:
The proteolytic enzyme papain is known to cause allergic sensitization. At a research laboratory several employees developed allergic symptoms after occupational exposure to papain dust and were referred to the local Clinic of Occupational Medicine. 10 out of 22 employees reported work-related ocular itching and symptoms of rhinitis. A Histamine Release Test showed that three employees were sensitized to papain. After the introduction of more stringent hygienic procedures including the use of a fume cupboard and external washing of test tubes during use, all work-related symptoms disappeared.
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