Download Seyedehsara Masoomi Dezfooli

Encapsulation of Probiotics for Aquaculture Applications
Seyedehsara Masoomi Dezfooli
The presentation aims to describe application of encapsulation technology to aid in
overcoming current problems in the aquaculture industry in New Zealand. Probiotics
have been used widely to confer health benefits to farmed aquatic animals. However,
conventional methods have not been efficient enough to deliver probiotics in high
viability, enough dosages and to specific target sites. Previous studies have reported
considerable increase in growth and survival rates of different abalone species in the
presence of probiotics (Hadi et al., 2014; Macey and Coyne, 2005). Mixing probiotics
with animal feed or releasing them in an aquatic environment are inefficient delivery
methods since probiotics will not withstand the harsh preparatory and environmental
conditions. Moreover, delivering freshly cultured probiotics is a costly and inefficient
process. Therefore, the present work aims to develop a controlled-released probiotic
delivery system by using encapsulation technology. Three different probiotics isolated
from the gut tract of Haliotis iris (Paua) will be used in this study. The probiotics are
cultured and then immobilised by encapsulating them into different natural or
biocompatible polymers. The encapsulation process is achieved using various
techniques including emulsification, spray drying and extrusion. After factorial analysis,
the optimum formulation will be selected for a feeding trial before it can be used in
aquaculture industries. This presentation will focus on the encapsulation technology
and its applications in the New Zealand aquaculture industry.
References
Hadi, J. A., Gutierrez, N., Alfaro, A. C., & Roberts, R. D. (2014). Use of probiotic bacteria to improve growth and survivability of
farmed New Zealand abalone (Haliotis iris). New Zealand Journal of Marine and Freshwater Research, 48(3), 405–
415.
Macey, B. M., & Coyne, V. E. (2005). Improved growth rate and disease resistance in farmed Haliotis midae through probiotic
treatment. Aquaculture, 245(1), 249–261.
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