DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
Effectiveness of Ginger (Zingiber officinale) as a Used Cooking Oil Purifier
A Research Report Presented to:
Ryan Bernard B. Cerbito
Research/Capstone Project
Madrid National High School
Madrid, Surigao del Sur
Researchers:
Isabel S. Minguillan
Darcy Daine M. Reyes
Nova Marie C. Dua
Dwight O. Sullano
MARCH 2019
DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
APPROVAL SHEET
This Research study entitled “Effectiveness of Ginger (Zingiber officinale) as a Used
Cooking Oil Purifier” prepared and submitted by Isabel Minguillan, Darcy Daine M. Reyes, Nova
Marie C. Dua and Dwight O. Sullano in partial fulfillment of the requirements for
RESEARCH/CAPSTONE PROJECT is here by recommended for approval and acceptance by the
Oral Examination Panel.
__________________ ________________
Member Member
___________________ __________________
Member Member
Accepted in partial fulfillment of the requirements for RESEARCH/CAPSTONE
PROJECT.
Mr. Ryan Bernard B. Cerbito
Research II Teacher
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
Acknowledgment
To God Almighty for the spiritual guidance, knowledge and opportunity given to come up
with this Research study;
to our parents for the financial support and understanding; and everyone who in one way or
another has supported us.
THANK YOU!
-The Researchers
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
Table of Contents
Page
Title Page 1
Approval Sheet 2
Acknowledgement 3
Table of contents 4
Abstract 5
CHAPTER I Introduction 6
A. Background of the study 6
B. Statement of the problem 6
C. Research Objectives 7
D. Statement of the hypothesis 7
E. Significance of the study 7
F. Scope & Limitations 7
G. Definition of terms 8
CHAPTER II Review of Related Literature 9
CHAPTER III Research Methodology 10
A. Experimental Design 11-12
CHAPTER IV Results and Discussion 13-16
CHAPTER V Summary of findings, conclusions, & recommendations 17
Appendices 18
Documentation 19
Bibliography 20
Curriculum Vitae 21-22
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
Abstract
This study aims to promote Ginger (Zingiber officinale) as a used-oil purifier to cleanse, save
and reuse oils used by the consumers. A stratified random sampling procedure was used for
selecting the participants in this study. This technique was employed to ensure an equal
representation of the variables for the study. The researchers randomly chose ten persons –
two in each year level - to compare and observe the quality between the purified cooking oil
and the unpurified cooking oil. The selected respondents were given a questionnaire to be
answered. Results showed that Ginger is effective in purifying used cooking oil in terms of its
color, smell and the after taste of foods cooked in the purified oil.
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
Chapter I
INTRODUCTION
A. BACKGROUND OF THE STUDY
Ginger (Zingiber officinale) is a flowering plant whose rhizome, ginger root or ginger
is widely used as a spice and an ingredient in cooking especially in Asian and Indian Cuisine.
For years, it is also used for medicinal purposes where health benefits from this plant includes
relieving nausea, morning sickness, muscle pain and loss of appetite.
In the Philippines, cooking is a habit which is often highlighted in special occasions.
It is very common that most of their delicacies are often cooked with the use of cooking oils.
However, there are some instances that more cooking oil is applied than the intended amount.
In response, people save the used oil and reuse it later for cooking. However, the quality of
the used oil becomes unhealthy because of its recent use.
In response to this certain situation, researchers came up with an idea to purify and
recycle used cooking oil through filtering it with ginger.
This study aims to determine if Ginger is effective in purifying used-cooking oil.
B. STATEMENT OF THE PROBLEM
1. Does using ginger as a used cooking oil purifier makes a difference to the quality than the
unfiltered used cooking oil?
2. Is ginger effective in purifying used cooking oil?
3. What are the benefits of ginger in purifying used cooking oil?
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
C. Research Objectives
1. To test the effectiveness of Ginger in purifying used-cooking oil.
2. To determine if there is a significant difference between the Ginger-purified used- oil and
non-purified used-oil.
D. Statement of Hypothesis:
In conducting the study, the researcher’s formulated the following hypothesis:
1. Using ginger as a used cooking oil purifier does not make a difference to the quality than
the unfiltered used cooking oil.
2. Ginger is not effective in purifying used cooking oil.
3. Ginger does not have benefits in purifying used cooking oil.
E. Significance of the Study:
The results of this study will benefit the consumers of cooking oil in the way that this
can provide a new idea on how to save and reuse cooking oil.
This study can also promote a healthier way of cooking and consuming since Ginger
is commonly known for its anti-oxidants.
F. Scope and Limitations
This study tends to limit only to Ginger as a purifier in oil. However, this study does
not aim or replace any commercialized and synthetically produced cooking oil purifier;
instead it will give idea to the manufacturers to promote the use of a healthier and more
efficient oil purifier.
The study was conducted at Reyes’ Residence last February 2, 2019.
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
G. Definition of Terms
The following terms are defined conceptually and operationally:
Ginger. A strong flavored spice used as the purifier in this study.
Used-Cooking Oil. A thick fluid subjected in this study.
Purifying. The process of cleansing and removal of any substances in the used-oil.
Effectiveness. The ability of Ginger in purifying used-oil.
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
Chapter II
REVIEW OF RELATED LITERATURE
According to Regina (2014), in most kitchens, cooking oil goes to waste which
requires households to routinely buy oil and cost them much more than recycling. Most
households often say that if only they didn't need to spend for cooking oil, then they would
have saved a lot for other necessities, especially in times of crisis. In response, researchers
came up with an idea to purify and recycle used cooking oil for consumers to be able to reuse
them.
There’s a lot of cooking oil that goes into frying, and for most of us it’s a pain to
discard the fryer oil after using it just once. But thankfully, there’s an easy way to purify and
reuse cooking oil. To purify and reuse cooking oil you need just a few basic things, most of
which can easily be found in every kitchen or are readily available. Like, Conical strainer,
cheesecloth, paper towel and Ginger based on the study of Sidharth Thakur (2018).
Ginger has protease ions used for purification processes through breaking down
peptide bonds of proteins. The ginger will absorb most of the odor and taste of the foods that
were cooked in the oil.
This procedure for filtering and purifying cooking oil for reuse is simple. And making
it a habit to reuse cooking oil can be a small step towards greener living.
Hence, the researchers decided to use ginger as a used cooking oil purifier. And
further observe the results and discuss the study.
9
DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
Chapter III
RESEARCH METHODOLOGY
This chapter deals with procedures as to how the study is conducted. Preparation of
Ginger, Application of Ginger to the set-ups, Determination of the effectiveness of Ginger,
Schematic diagram, and the flow chart of the study are presented.
Materials and Equipment needed in the experiment were Used cooking oil, Container,
Cheesecloth, Paper Towel, Ginger slices, Airtight Jar, and Strainer
Procedure of the experiment:
The used cooking oil were strained once using a strainer to catch and remove any
coarse food particles, then was heated to a temperature of about 170-200 degrees Fahrenheit
(76.67 – 93.33 degrees Celsius) and the ginger slices was added. After about two or three
minutes, the heater was turned off and the ginger slices were remained in the cooking oil
while the oil cools naturally. In this step, the ginger absorbed most of the odor and taste of the
foods that were cooked in the oil. When the cooking oil has cooled down to about 120
degrees Fahrenheit (48.89 degrees Celsius), the oil was then filtered.
The researchers line the strainer with the paper towel, making sure that there is no
place where the oil can leak without passing through the towel. Then, the cheese cloth was
lined to it in the same fashion. The filter was held above a container that is big enough to
hold the amount of oil being filtered then the oil was poured in it. It may take up to 5 minutes
for 50 mL of oil to pass through it, since the filter will be intentionally made to be very fine.
When the filtered oil reached at room temperature, it was then transferred to storage jars.
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
A. Experimental Design
Output
Input
Process
Used cooking Oil Purification and Ginger as cooking oil
and Ginger slices Filtration of Used purifier
cooking oil using
Ginger
Fig. 1. Schematic Diagram for the Effectives of Purified Used cooking oil with Ginger
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
Preparation of Materials
APPLICATION OF GINGER TO THE
USED-COOKING OIL
TESTING AND COOKING OF FOODS TO
THE EXPERIMENTED SET-UPS
SURVEY
DATA ANALYSIS
Figure 2: Flow Chart of the Study
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
Chapter IV
RESULTS AND DISCUSSIONS
On the 2nd of February 2019, the researchers conducted the experiment at Reyes’
Residence located at Carmen, Surigao del Sur. We collected 100mL Used cooking oil
available from the household kitchen and separated it by two; 50mL were used for the
purification process with Ginger, and the other 50mL unpurified used cooking oil was set
aside for the comparison and observation. After the process of purification, the researchers
observe the filtered used cooking oil then started the survey, and the data collection was
followed. It was done through Qualitative observation concerning the quality of the purified
used cooking oil and Quantitative research having a survey regarding the preference of the
respondents of the ginger as a used cooking oil purifier.
A stratified random sampling procedure was used for selecting the participants in this
study. This technique was employed to ensure an equal representation of the variables for the
study. The researchers randomly chose 10 persons – 2 in each year level - to compare and
observe the quality of purified cooking oil and the unpurified cooking oil. The selected
respondents were given a questionnaire to be answered. The data collection was based from
the response of the participants
The data collected from the answered questionnaires were analyzed.
Table 1: Smell of the purified used cooking oil
YES NO
Ginger as a used cooking oil purifier makes a
difference to the quality than the unfiltered used
10 0
cooking oil. In terms of:
1. Smell
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
The table shows the number of students who said that there is a difference between the
purified used cooking oil and the unpurified used cooking oil in terms of smell. Out of 10
students, 10 answered Yes while none answered No.
Table 2: Color of the purified used cooking oil
YES NO
Ginger as a used cooking oil purifier makes a
difference to the quality than the unfiltered used
10 0
cooking oil. In terms of:
2. Color
The table shows the number of students who said that there is a difference between the
purified used cooking oil and the unpurified used cooking oil in terms of color. Out of 10
students, 10 answered Yes while none answered No.
Table 3: Taste of the food that was cooked using the purified used cooking oil
YES NO
Ginger as a used cooking oil purifier makes a
difference to the quality than the unfiltered used
7 3
cooking oil. In terms of:
3. Taste (of the food that was cooked with
purified used cooking oil)
14
DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
The table shows the number of students who said that there is a difference between the
purified used cooking oil and the unpurified used cooking oil in terms of taste (of the food
that was cooked with purified used cooking oil). Out of 10 students, 7 answered Yes while 3
answered No.
Table 4: Effectiveness of Ginger as used cooking oil purifier
YES NO
Ginger is effective in purifying used cooking oil. 10 0
The table shows the number of students who said that Ginger is effective in purifying used
cooking oil based on their observation. Out of 10 students, 10 answered Yes while none
answered No.
Table 5: Ginger introduced as used cooking oil purifier
YES NO
Is the study worthy to be introduced to the people as a
technique to save and reuse used oil despite of the
10 0
prices it would cost?
The table shows the number of students who said that Ginger is worthy to be introduced as a
used cooking oil purifier. Out of 10 students, 10 answered Yes while none answered No.
YES NO
Ginger as a used cooking oil purifier makes a
difference to the quality than the unfiltered used
15
DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
cooking oil. In terms of: 10 0
1. Smell 10 0
2. Color 7 3
3. Taste
4. Ginger is effective in purifying used cooking 10 0
oil.
5. Is the study worthy to be introduced to the people 10 0
as a technique to save and reuse used oil despite of
the prices it would cost
16
DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
Chapter V
SUMMARY OF FINDINGS, CONCLUSIONS AND RECOMMENDATIONS
Based on the findings and results of the survey conducted:
An overall average of 100% from ten out of ten respondents, two students each year
level from Grade 7 to 10 and one student per year level of Grades 11 to 12. Showing that
there is a noted difference between the purified used-cooking using ginger and non-purified
used cooking oil in terms of smell, color, effectiveness and its potential ability to be
introduced to the consumers.
Furthermore, 30% of students stated that there is no significant difference on the taste
from the foods that were cooked between the two variables. Therefore, the results clearly
show that purifying used-cooking oil using ginger is proven effective.
The researchers would like to recommend further study regarding the issue of
preferences of consumers between available used cooking oil and the researchers’ purified
used cooking oil. Less expensive ingredients are also recommended. The researchers also
recommend this study as a reference for other enthusiasts who would like to make a similar
study.
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
APPENDICES
Below is the questionnaire given to the respondents.
YES NO
Ginger as a used cooking oil purifier makes a
difference to the quality than the unfiltered used
cooking oil. In terms of:
1. Smell
2. Color
3. Taste
4. Ginger is effective in purifying used cooking
oil.
5. Is the study worthy to be introduced to the people
as a technique to save and reuse used oil despite of
the prices it would cost
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
DOCUMENTATION
Unpurified Used Cooking Oil (Left) and Purified Used Cooking Oil using Ginger (Right)
During the survey of Purified Used Cooking Oil and Unpurified Used Cooking Oil
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
BIBLIOGRAPHY
Regina (2014, January 19). Ginger as Used Cooking Oil Purifier. Retrieved from
https://prezi.com/muom5doqptru/ginger-as-used-cooking-oil-purifier/
kingzednoc123 (2017, May 11). Restoring Used Cooking oils. Retrieved from
http://www.sciencebuddies.org/science-fair-projects/ask-an-
expert/viewtopic.php?f=29&t=17691
Jennyfer (2018). Oil Purification. Retrieved from https://phdessay.com/oil-purification/
Sidharth Thakur (2019). Learn How to Reuse Cooking Oil. Retrieved from
https://www.brighthub.com/environment/green-living/articles/112550.aspx
Research Methodology. Retrieved from
https://repository.up.ac.za/bitstream/handle/2263/28684/03chapter3.pdf?sequence=4
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
CURRICULUM VITAE
Name: Reyes, Darcy Daine M.
Address: Poblacion, Carmen, Surigao del Sur
Birthdate: July 5, 2000
Parents: Bernardo C. Reyes
Andrea Manuela M. Reyes
Contact No.: 09480975675
Email: darcydaine.reyes@gmail.com
Name: Minguillan, Isabel S.
Address: P-6, Patongpatong Madrid, Surigao del Sur
Birthdate: March 8, 2001
Parents: Anthony Vic Benedict A. Roluna
Elizabeth M. Roluna
Contact No.: 09486004007
Email: belleminguillan1223@gmail.com
21
DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
Name: Dua, Nova Marie C.
Address: P-1, San Vicente, Madrid, Surigao del Sur
Birthdate: November 16, 2000
Parents: Quirico A. Dua
Florenda C. Dua
Contact No.: 09368905754
Email: nova.dua17@gmail.com
Name: Sullano, Dwight O.
Address: P-2, Antao, Carmen, Surigao del Sur
Birthdate: April 28, 2001
Parents: Mauricio E. Sullano
Cheryl O. Sullano
Contact No.: 09566458895
Email: dwightsullano143@gmail.com
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DEPARTMENT OF EDUCATION
Caraga Administrative Region
Division of Surigao del Sur
MADRID NATIONAL HIGH SCHOOL
Madrid, Surigao del Sur
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