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Khan, Fawad, 2011. Yeast biomass production from rest products for fish feed. Second cycle, A2E. Uppsala: SLU, Dept. of Microbiology



Proper nutrition plays a key role in the growth of fish. However, limited supply of raw material
for fish feed has posed problem for the ever-growing Aquaculture. Waste water from food
industries (e.g. diaries and slaughterhouses) contains considerable amounts of proteins and fats to
be used as fish feed. Similarly, glycerol which is a by-product in biodiesel production can be used
as carbon source by yeast. Linseed oil can be useful as a source of fatty acids.
In this study we investigate the potential of waste from paper and beer industries as a growth
medium for yeast. We used two different concentrations of Glycerol and Linseed oil. Media was
inoculated with yeast and cultured for 48 hours. To determine the growth of yeast, OD (Optical
Density) was measured for each sample at three hours intervals.
Our results show that waste from beer industry is very promising as compared to waste from
paper industry for the growth of yeast. Moreover, all strains of yeast showed better growth when
lower concentrations of glycerol and linseed oil were added to beer water as compared to high

Main title:Yeast biomass production from rest products for fish feed
Authors:Khan, Fawad
Supervisor:Olstorpe, Matilda
Examiner:Passoth, Volkmar
Series:Examensarbete/Sveriges lantbrunksuniversitet, Institutionen för mikrobiologi
Volume/Sequential designation:2011:11
Year of Publication:2011
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:NM003 Biotechnology - Master's Programme 120 HEC
Supervising department:(NL, NJ) > Dept. of Microbiology
Keywords:Fish Feed, Glycerol, Linseed Oil, Beer Water, Waste from paper industry, Yeast
Permanent URL:
Subject. Use of subject categories until 2023-04-30.:Life sciences
Deposited On:15 Nov 2011 12:39
Metadata Last Modified:20 Apr 2012 14:23

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