Addis Ababa University Libraries Electronic Thesis and Dissertations: AAU-ETD! >
Faculty of Science >
Thesis - Biology >
Please use this identifier to cite or link to this item:
|Title: ||OPTIMIZATION OF COFFEE WASTES FOR THE CULTIVATION OF PLEUROTUS OSTREATUS|
|Authors: ||ASTER, SHIMELIS|
|Advisors: ||Dawit Abate(Dr.)|
|Keywords: ||Biological efficiency|
|Copyright: ||Jun-2011 |
|Date Added: ||30-Jun-2012 |
|Publisher: ||Addis Ababa University|
|Abstract: ||Solid state cultivation (SSC) was carried out to evaluate the feasibility of using coffee waste
as substrates for the production of the edible mushroom, Pluerotus ostreatus. Coffee husk
and coffee pulp powder media were used as a good culture media for Pleurotus ostreatus.
Addition of supplementary substrate such as, Wheat bran (WB), Chicken manure (ChM),
Cow dung (CD), Noug meal (NM) and Ash improved yield (production) of the mushroom.
Composted coffee waste gave better yield than fresh coffee waste. Highest yield (1361.74 and
1232.18g) was obtained from aerobic composted (for eight (8) days) coffee parchment and
husk when it was supplemented with 18% cow dung and 8% chicken manure, respectively.
With aerobic composted coffee parchment as a substrate the biological efficiency reached
90.74% with four flushes after 90 days. With coffee husk as a substrate the biological
efficiency reached 98.57% in 90 days. In the case of fresh substrate the highest biological
efficiency 61.48% and 74.73% was obtained from coffee parchment and coffee husk,
respectively. In all cases low biological efficiency was recorded from the substrate
supplemented with 18% nug meal and 2% ash. There was significant difference (at P<0.05)
observed between fresh and aerobic composted coffee parchment and coffee husk as well as
different supplementary substrates on yield and the biological efficiency. In both cases with
different supplementary substrate first flash gave high yield.
The result of these experiments has showed that the feasibility of using composted coffee husk
and coffee parchment as substrates with different supplementary substrate for cultivation of
edible mushroom in SSC.|
|Description: ||A Thesis Submitted to the School of Graduate Studies of Addis Ababa
University in Partial fulfilments for the Degree of Master of Science in
biology (Applied Microbiology).|
|Appears in:||Thesis - Biology|
Items in the AAUL Digital Library are protected by copyright, with all rights reserved, unless otherwise indicated.