Nor-Guard® OV11 Concentrate is a premixture (mixture of flavouring compounds) with a high content of natural antioxidants for inclusion in feeds for aquaculture. The product is a combina-tion of an extract made from grape (Vitis vinifera) and an extract of olive leaves (Olea europaea).

Nor-Guard® OV11 Concentrate contains a unique combination of water soluble and fat soluble antioxidants. The total content of polyphenols is 300 mg/g (Folin-Ciocalteu). The typical antioxidative activity measured by the ORAC value is 4500 μmol TE/g. The product thus provides all-round effects due to the synergism between antioxidants with different solubility in water and fats.

Nor-Guard® OV11 Concentrate can be used in extruded, expanded and pelleted feeds, as well as in meal feeds. The product is formulated as a free-flowing powder ready for use by producers of premixes and concentrates, as well as by feed manufacturers and home mixers.



Elements rich in natural antioxiants extracted from grapes ( Vitis vinifera ) and from olive leaves ( Olea europaea ).
Dry, free flowing powder
Minimum 12 months
Dry, cool (below 30˚ C)
4 kg plastic pails,
20 kg fiber drums with inner polyethylene bags

Recommended dosage

Fisk and shellfish
15 g / 1000 kg dry feed

Note: The feed additives in this product are registered in accordance with Regulation (EC) No 1831/2003 concerning feed additives and are listed in the Community Register of Feed Additives.
Nor-Guard® is a registered trademark of Feed-Add, Dumas ApS.

July 2012

To download the datasheet click here: (DS_Nor-Guard OV11 Conc_Aqua.pdf )

Dumas ApS