ISOLATION, SELECTION AND IMPROVEMENT OF LOCAL YEAST STRAINS FOR ETHONOL PRODUCTION
ISOLATION, SELECTION AND IMPROVEMENT OF LOCAL YEAST STRAINS FOR ETHONOL PRODUCTION
| dc.contributor.author | AMEH, BABA JOSEPH | |
| dc.date.accessioned | 2014-02-10T11:39:45Z | |
| dc.date.available | 2014-02-10T11:39:45Z | |
| dc.date.issued | 1988-09 | |
| dc.description | THESIS Submitted to the Postgraduate School AHMADU BELL0 UNIVERSITY, ZARIA, in Partial Fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY in MICROBIOLOGY | en_US |
| dc.description.abstract | Of a t o t a l of 21 yeast s t r a i n s isolated from local fermented beverages, foods and f r u i t s 10 were found to ferment glucose vigorously in conventional t e s t s . They were further screened for characteristics potentially useful for ethanol production, namely; (a) relative rate of glucose fermentation;(b) a b i l i t y to flocculate; (c) a b i l i t y to tolerate 10 - 15%(V/V) ethanol; (d) a b i l i ty to ferment glucose at 37°C and (e) a b i l i t y to ferment 40% (w/V) glucose concentration. The r e l a t i v e fermentative a b i l i t i e s of these yeast strains, as determined by Warburg respirometry, ranged from 20.40 to 351 microlitres ( u l ) . The 10 yeast strains were identified as Saccharomyces cerevisiae (AK-1); S. uurevisiae (3-2); S. cerovisiae (J-82), S. kluyvori (A-1); Kluyvcromyces mar xi anus (K-1), Pichia anomala (AK-4), Debaryomyces hansenii (J-1), Candida rhaggi (B-82), C. magnoliae (KF-1) and Dekkora intermedia (KZ-1). Acid hydrolysis of corn-cobs, groundnut hulls, cassava flour, grass straw, saw dust, and sorghum stalk pulp was carried out. The levels of reducing sugars contained in the hydrolysates of these materials ranged from 30 to 50mg/ml. The aqueous extracts were used in v | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/939 | |
| dc.language.iso | en | en_US |
| dc.subject | ISOLATION, | en_US |
| dc.subject | SELECTION | en_US |
| dc.subject | IMPROVEMENT | en_US |
| dc.subject | LOCAL YEAST | en_US |
| dc.subject | STRAINS | en_US |
| dc.subject | ETHONOL | en_US |
| dc.subject | PRODUCTION | en_US |
| dc.title | ISOLATION, SELECTION AND IMPROVEMENT OF LOCAL YEAST STRAINS FOR ETHONOL PRODUCTION | en_US |
| dc.type | Thesis | en_US |