Yeast fermentation of alcohol distillery slops in a batch airlift fermenter

Date

4-1982

Degree

Bachelor of Science in Agricultural Engineering

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Ernesto J Del Rosario

Abstract

PEREZ, Domingo Josue. University of the Philippines at Los Banos. April, 1982. Yeast Fermentation of Alcohol Distillery Slows in a Batch Airlift Fermenter

Adviser: Dr. Ernesto J. del Rosario

The distillery slops was characterized and used as substrate for the production of yeast biomass using a 9-liter batch airlift fermenter. The utilization of organic matter was monitored along with the yeast cell concentration and sugar concentration during the cultivation of the yeasts at different pH.

Three non-flocculent yeasts, namely Candida tropicalis UPLB 1, Yeast Isolate 3 (Y3), and Yeast Isolate 4 (Y4), were evaluated in terms of their effects on toe chemical oxygen demand (COD), total sugar concentration, and biomass production during batch cultures on distillery slops. Y4 gave the highest relative increase in cell concentration and COD reduction with values of 35.22 and 22.53%, respectively, and this was observed at pH 4.5. This isolate also showed the lowest value of relative sugar reduction. The optimal values for 6rowth and reduction of sugar content and COD for Candida tropicalis UPLB 1 was obtained at pH 5.0. Y3

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1982 A13 P47

Document Type

Thesis

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