Page 47 - New additives and ingredients in the formulation of aquafeeds
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Plant protein isolates and hydrolysates as
alternative to the animal protein in aquaculture diets
J. L. Tejedor del Real
1
, J. J. Pedroche Jiménez
2
, M. M. Yust Escobar
2
, F. Millán Rodríguez
2
and M. V. Carrión Maestro
1
1
Dibaq Acuicultura
.
C/Cruz 3. 40260. Fuentepelayo, Segovia (Spain)
2
Instituto de la Grasa CSIC.
Avda. Padre García Tejero, 4. 41012 Sevilla (Spain)
Summary
Aquaculture has been the bigger growing sector in food production over
the last decade. To continue in this position, needs an optimization of the
feeding and fattening systems of fishes, reducing the use of fish oil and
meal, so dependent on extractive fishing, increasing more overexploited.
The plant protein isolates and hydrolysates, from legumes and oilseeds,
are attractive alternatives because of its availability and its low cost,
being perfect candidates for this function, and consequently to achieve an
increasingly sustainable and friendly environment aquaculture.
Introduction
In the last four years (2007-2011) and with a 20 million Euros budget, the
largest aquaculture research project called “ACUISOST- Towards Sustainable
Aquaculture” has been developed in Spain.
It has been supported financially by the Technology Development Centre
(CDTI). This initiative was made possible thanks to the constitution of a
consortium participated by 25 national companies, led by Dibaq Aquaculture
and 20 public research organizations, which belong to the total of 17
participating research groups.
The purpose of ACUISOST has been to position the sector in an advantageous
position by exploiting synergies and peculiarities of the Spanish production,
cultural and geographical system,as well as generate new knowledge
in areas such as new additives, encapsulation systems, application of
new techniques and biotechnology in order to improve the functionality
of aquaculture diets, implementation of new production and biosafety
technologies, management of aquaculture waste or design of new and
more attractive consumer products.
In this sense, one of the main activities in the project mentioned above
has been the study from different points of view, such as nutritional,
environmental, technical and economic aspects, several raw materials
comparing with the traditional fish meal. After the production of protein
isolates, protein hydrolysates were developed in a pilot-plant scale with
the goal of being used subsequently in feed formulation and feeding on
Plant protein isolates and hydrolysates as alternative to the animal protein in aquaculture diets
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