Parametric study on the growth of Lactobacillus plantarum (Orla-Jensen) Bergey et al. for the production of propbiotic soy drink

Date

6-2015

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Jeanne Michelle T. Valencia

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

In this study, the effects of varying concentrations of guava leaf extract powder, soya extract powder, and white sugar on the viability of Lactobacillus plantarum F39 were analyzed using a 2^k factorial design of experiment. Ranges of the different factors were established prior to 2^k factorial experiment. Media with different cobinations of factors were inoculated with 2% v/v L. plantarum (Orla-Jensen) Bergey et al., adjusted to pH 6.5, and incubated at 37°C for 24 hours. RResults showed that high viable cell counts (log CFU/mL) were obtained fro media containing 0.2% w/v to 0.6% w/v guava leaf extract powder, 0.3% N to 0.5% N soya extract powder, and 2% w/v to 4% w/v white sugar. Analysis of variance showed that only the soya extract powder concentration significantly increased the viable cell count of L. plantarum (Orla-Jensen) Bergey et al.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2015 E62 /G55

Document Type

Thesis

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