The bacteriostatic effect of Carica papaya extract on Escherichia and Streptococcus pyogenes.

Amora, Maria Cristina M. and Malabanan, Carla Ricci B. (1998) The bacteriostatic effect of Carica papaya extract on Escherichia and Streptococcus pyogenes. Undergraduate thesis, De La Salle University-Dasmarinas.

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Abstract

A drug is termed bacteriostatic if growth of bacteria is only inhibited but not eliminated at expected serum concentration. Such term can be applied to antibiotics such as penicillin and ampicillin since they can inhibit the growth of bacteria. The objective of the study was to test if Carica papaya has a bacteriostatic effect and could be used as an alternative drug in inhibiting the growth of Escherichia coli and Streptococcus pyogenes. Moreover, papaya is cheaper and an abundant fruit in the Philippines. Different concentrations, 100% pure extract, 75% and 50% crude extracts were used in the experiment to test whether they have a bacteriostatic effect on Escherichia coli and Streptococcus pyogenes. Culture media were used for the growth and cultivation of bacteria. The Filter-paper Disk Agar method was conducted and the zones of inhibition were determined for the bacteriostatic effect on Escherichia coli and Streptococcus pyogenes.The experimental data obtained from the study provided the following conclusions: There was no bacteriostatic effect of Carica papaya extracts on Escherichia coli and Streptococcus pyogenes; Carica papaya extracts at different concentrations(100% pure extract, 75% and 50% crude extracts) could not be used as an alternative for Escherichia coli and Streptococcus pyogenes.

Item Type: Thesis (Undergraduate)
Additional Information: BIO 320 1998
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QK Botany
Users: College of Science and Computer Studies > Biological Science
Depositing User: Ms. Bibiana Alcantara
Date Deposited: 07 Dec 2015 09:04
Last Modified: 07 Dec 2015 09:04
URI: http://thesis.dlsud.edu.ph/id/eprint/305

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