Digestarom® DC Xcel is a mixture of essential oils from oregano and caraway seeds and three individual compounds; carvacrol, methyl salicylate and L-menthol. The blend is encapsulated with a hydrogenated oil.

Manufacturer´s main claim
Supports intestinal health
Improves feed intake and feed conversion

Technical specifications Digestarom® DC Xcel

EU category Zootechnical additive
Functional group of additives Other zootechnical additives
Composition Essential oils of oregano: 60-80 mg/g
Essential oils of caraway seed: 5-10 mg/g
Carvacrol: 60-80 mg/g
Methyl salicylate: 10-40 mg/g
L-menthol: 30-55 mg/g
EU code 4d19
EU approval (content mg/kg complete feed) Piglets: 75 - 125
End of period of EU authorisation 26 February 2030
Safety and handling It is recommended to use protection for the skin and eyes.
Storage stability Three batches of the product were stored for 12 months at either 22°C or 37°C. More than 95% of the active substances were detected at the low temperature whereas more than 90% was detected at the higher temperature.

Three batches of the product were supplemented to a vitamin/mineral premix and stored for 6 months at 22°C in sealed containers. After 6 months of storage, the residual activity ranged from 87% to 95% with methyl salicylate being the least stable.

A single batch of the product was added to mash feed and stored in a sealed container at 22°C for 5 months. The rate of recovery ranged from 87% to 97% with methyl salicylate again being the least stable component.
Heat stability Mash feed supplemented with the additive was pelleted at either 80°C or 90°C. Samples of the mash feed and the pelleted feed were analysed for the active substances. When pelleted at 80°C the rate of recovery ranged from c. 65% to 90% and c. 59% to 85%, respectively, at 90°C. Samples of the pelleted feed were furthermore stored for 5 months. The storage reduced the activity of the active substances by a further 20%. 
Product appearance The product has an off-white colour. The product does not contain particles below 10 µm in diameter. Mean dusting potential is 0.03 g/m3
Distribution in feed Homogeneity was tested in premixes, mash and pelleted feed supplemented with the product. Coefficient of Variance of carvone in the premix was 5.1%, in the mash feed 6.3% and in the pelleted feed 5.9%.
Producer Biomin

List of references

EFSA (2019). Safety and efficacy of Biomin DC-C as a zootechnical  feed additive for weaned piglets. EFSA Journal 2019;17(4):5688

EU (2020).
Commission implementing Regulation (EU) No 2020/160 of 5 February 2020 concerning the authorisation of the preparation of oregano oil, caraway oil, carvacrol, methyl salicylate and L-menthol as a feed additive for weaned piglets (holder of the authorisation Biomin GmbH). Official Journal of the European Union. L34/25-27