Development of innovative fish feed enriched with bioactive agents derived from plant materials using homogenate assisted extraction, spray drying and extraction techniques reducing the use of antiparasitic agents

27/08/2019

Summary

The proposed methodology refers to the development of innovative, non-parasitic bioactive fish feeds, using bioactive substances derived from cultivation and crop processing residues of Hippophae rhamnoides plant as nutritional and active enhancers. The new products that they are going to be developed will strengthen the fish farming industry by providing lower cost feedstocks and bioactive compounds to replace the use of chemical antibiotics and hormones.

Technology Description

The extraction of targeted compounds will take place through homogenate assisted extraction, a microemulsion based extraction technique. This technique has the significant advantage against the other extraction techniques that simultaneously can extract lipophilic and hydrophilic compounds in the form of a stable emulsion that can be easily further processed. Because of the high steering speed and the sheer forces developed the plant cells are easily broken realizing the active substances avoiding the use of harsh solvents and high temperature that triggers the degradation of the active compounds.

Main advantages

The development of innovative fish feed with the methodology proposed by our research team will improve the productivity of aquaculture in the region by suggesting more and even higher quality products while minimizing costs and environmental footprint.

The new products that they are going to be developed will strengthen the fish farming industry by providing lower cost feedstocks and bioactive compounds to replace the use of chemical antibiotics and hormones.

Stage of development

All the proposed techniques, homogenate assisted extraction, spray drying encapsulation and extrusion are technologies validated in semi pilot infrastructure that belongs to our Laboratory (TRL4).

Challenge and needs

The challenge for the proposed project/collaboration with business partners is the upscaling of the TRL through the demonstration of the proposed methodology to the relevant environment.

Intellectual property

A prior art search is under development.

Potential markets and targets

Estimates suggest that fish feed uses 87% of world fish oil reserves as a source of fat, and the rapidly growing aquaculture industry cannot continue to rely on marine fish stocks for its supply. Annual statistics reports have given fish meal prices of 1300 euros per tonne for 2017 and 1700 for 2018, while in fish oil 1170 euros per tonne for 2018 and 1300 tonnes in 2019, forecasts are growing at an average annual growth rate of 15 percent.

Inherent nutrients and bioactive compounds of cultivation and crop processing residues of Hippophae rhamnoides, represent a significant alternative source of nutrient to raw materials such as fishmeal and fish oils which, as mentioned above, are proving costly and environmentally unsustainable for the fish farming industry. In this context, the aim of the proposed methodology is to drastically reduce, by a minimum of 25%, the annual cost of the aquaculture company's vaccination, which is to prevent the culture population from infecting agents. The natural enhancement of the metabolism and the immune system of fish through bioactive components aims at reducing the mortality rate of the cultivated species, as one fish's disease can lead to the loss of the entire population of the cage.

Potential partners

  • Fish feed producers
  • Fish farms
  • Functional food producers
  • Agricultural cooperatives

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