Optimization production of dry yeast using mixture of pineapple solid waste and liquid waste of fermented soybean industry

Wignyanto., . and Sri K., . and Suprayogi., . Optimization production of dry yeast using mixture of pineapple solid waste and liquid waste of fermented soybean industry. pp. 77-81. ISSN 22317546

A combined substrat consisting of solid and liquid waste produced during the course of pineapple and fermented soybean processing was used for the production of instant dry yeast. Two stages of experiment were conducted. The first experiment aimed to find out the best proportion beween solid pinneaple and liquid waste released from fermented soybean industry (1:0 ; 1:1.5 ; 1:1 ; 1:1.5; 0:1) as substrate for the growth of Saccharomyces cerevisiae and the second stage of experiment was to find out the optimum concentration of dextrin as filler and lecithin for the production of instant dry yeast. A central composit design with two factor was used to carry out the second stage experiment. Dextrin concentration (50; 60; 70) as the first factor and lecithin concentration (0.5:1.0 1.5) as the second factor. The response analysed are the water content solubity cell viliability and ethanol content. Results obtained from the first stage shows that the best substrate for the growth of S. cerevisiae was the ratio of pineapple waste and liquid soybean waste (1 : 0.5) incubation time 12 hours temperature incubation 30oC and agitation rate 150 rpm. The production of S. cerevisiae is 4.35 x 108 cell/ml. The shortest adaptation time is 4 hours. Results obtained from the second stage experiment are computed with Design Expert 7.1.3. The optimum condition obtained were dextrin concentration of 63.59 (w/v) and lecithin concentration of 1.57 (w/v) producing product having water content 6.25 solubility 77.56 cell viliability is 62.6 and ethanol concentration is 4.21 .

Full text available from: Official URL: http://ifrj.upm.edu.my/22%20(01)%202015/(12).pdf

Abstract

A combined substrat consisting of solid and liquid waste produced during the course of pineapple and fermented soybean processing was used for the production of instant dry yeast. Two stages of experiment were conducted. The first experiment aimed to find out the best proportion beween solid pinneaple and liquid waste released from fermented soybean industry (1:0 ; 1:1.5 ; 1:1 ; 1:1.5; 0:1) as substrate for the growth of Saccharomyces cerevisiae and the second stage of experiment was to find out the optimum concentration of dextrin as filler and lecithin for the production of instant dry yeast. A central composit design with two factor was used to carry out the second stage experiment. Dextrin concentration (50; 60; 70) as the first factor and lecithin concentration (0.5:1.0 1.5) as the second factor. The response analysed are the water content solubity cell viliability and ethanol content. Results obtained from the first stage shows that the best substrate for the growth of S. cerevisiae was the ratio of pineapple waste and liquid soybean waste (1 : 0.5) incubation time 12 hours temperature incubation 30oC and agitation rate 150 rpm. The production of S. cerevisiae is 4.35 x 108 cell/ml. The shortest adaptation time is 4 hours. Results obtained from the second stage experiment are computed with Design Expert 7.1.3. The optimum condition obtained were dextrin concentration of 63.59 (w/v) and lecithin concentration of 1.57 (w/v) producing product having water content 6.25 solubility 77.56 cell viliability is 62.6 and ethanol concentration is 4.21 .

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Item Type:	Article
AGROVOC Term:	Yeasts
AGROVOC Term:	Pineapples
AGROVOC Term:	Solid wastes
AGROVOC Term:	Liquid wastes
AGROVOC Term:	Soybeans
AGROVOC Term:	Fermented products
AGROVOC Term:	Ascorbic acid
AGROVOC Term:	Saccharomyces cerevisiae
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/21971

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