Production and evaluation of antibacterial soap with guyabano (Annona muricata) extracts / by Mary Anne R. Lopez and Yssa Mariella L. Mangulat.
Material type: TextLanguage: English Publication details: Indang, Cavite : Cavite State University- Main Campus, 2015.Description: xiv, 59 pages : 28 cm. illustrations ; Content type:- text
- unmediated
- volume
- 668 L88 2015
- Science High School
Item type | Current library | Collection | Call number | Materials specified | URL | Status | Notes | Date due | Barcode |
---|---|---|---|---|---|---|---|---|---|
Theses / Manuscripts | Ladislao N. Diwa Memorial Library Theses Section | Non-fiction | 668 L88 2015 (Browse shelf(Opens below)) | Link to resource | Room use only | RS-737 | 00009329 |
Research Study (Science High School) Cavite State University
Includes bibliographical references.
Science High School
LOPEZ, MARY ANNE R. and MANGUIAT, YSSA MARIELLA L. Production and Evaluation of Antibacterial Soap with Guyabano Extracts. Research Study (General Science Curriculum). Science High School, College of Education, Cavite State University, Indang, Cavite. April 2015. Adviser: Prof. Dulce L. Ramos.
This study was conducted to produce and evaluate antibacterial soap with guyabano extracts. Specifically, it aimed to: 1.) identify the zones of inhibition exhibited by the guyabano extracts; 2.) identify the best part of guyabano tree that will exhibit inhibitory activities against Staphylococcus aureus and Salmonella enterica ser. Typhimurium, 3.) determine the sensory properties of the antibacterial soap with guyabano extracts in terms of odor, texture and general acceptability and 4.) determine the pH level of the antibacterial soap with guyabano extracts. The study was conducted at the Microbiology Laboratory of the Department of Biological Sciences, Cavite State University from October to December 2014. The evaluation of the produced antibacterial soap with guyabano extracts was done on January 26, 2015. The evaluators were 30 students from the Department of Biological Sciences, Cavite State University. The zones of inhibition exhibited by the guyabano leaves extracts against Staphylococcus aureus in three plates were as follows: 23 mm, 19 mm and 18 mm; and against Salmonella enterica ser. Typhimurium were 26 mm, 29 mm and 24 mm showing that the extracts were active against the organisms. The guyabano fruit and stem extracts had no zone of inhibition against Salmonella enterica ser. Typhimurium and Staphykoccus aureus.
The best part of guyabano tree that exhibited inhibitory activities against Staphylococcus aureu.s. and Salmonella enterica ser. Typhimurium were the leaves and were therefore used to make the soap. T1 with 30 mL of guyabano leaves extract has the highest mean score in terms of texture described as smooth and in terms of general acceptability described as acceptable. T7 with 40 rnL of guyabano leaves extract has the highest mean score in terms of odor described as slightly pleasant. The pH level of the antibacterial soap with guyabano leaves extract is 8. The produced antibacterial soap with guyabano leaves extract has a slightly pleasant odor, smooth texture and was acceptable.
Submitted copy to the University Library. 08/18/2015 RS-737