Utilization of gumamela flower (hibiscus rosa-sinensis) as an alternative source of pigment for watercolor/ Andrialyn D. Cabadsan, Ma. Jezelle P. Cabuang, Arvin Rey B. Cornelio, Rosemarie G. Fuertes, Janna Suñir, Jonathan T. Lapira, and John Vincent B. Tomimbang.--

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Cabadsan, Andrialyn D [author]

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Material type: Text

TextPublication details: Manila: Technological University of the Philippines, 2025.Description: xiii, 93pages: 29cmContent type:

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BTH TP 949 C33 2025

Dissertation note: College of Industrial Technology.-- Bachelor of technology major in print media technology: Technological University of the Philippines, 2025. Summary: This project, titled "Utilization of Gumamela Flower (Hibiscus rosas-sinensis) as an Alternative Source of Pigment for Watercolor," to produce an alternative ink for papers and canvas using gumamela flowers, providing students with a sustainable option for watercolor creation. The study focuses on investigating the safety, and environmental impact of non-toxic pigments in watercolor painting. The abstract highlights the growing demand for highlighting non-toxic pigments as a promising choice for artists seeking creative expression and sustainability. The innovative method of boiling gumamela flowers, collecting sap, dehydrating petals, and drying them for two weeks produces a powdery substance, enhancing watercolor pigment production. Alkalinity results indicate weak colorant pigmentation. According to Adamson University Technology Research and Development Center (AUTRDC) the evaluation results of viscosity using the Engler method was not applicable due to the insufficient volume of 60 ml required to achieve the best fluid consistency, a minimum volume of 250 ml is necessary. Permanence testing revealed that the color remained unchanged without fading after several days. The transparency test indicated a semi-transparent quality as the watercolor overlapped a previously added dark ink line. Expert and student evaluations in the field of printing were conducted to assess the produced watercolor's acceptability in terms of functionality, workability, durability, aesthetics, economy, and safety. The overall mean rating was 4.58 with descriptive rating of Highly Acceptable. Economy scored 4.56, and Workability scored 4.35, showing excellent performance overall. Indicates that the produce is acceptable as an alternative source of pigment for watercolor.

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Holdings
Item type	Current library	Shelving location	Call number	Copy number	Status	Date due	Barcode
Bachelor's Thesis CIT	TUP Manila Library	Thesis Section-2nd floor	BTH TP 949 C33 2025 (Browse shelf(Opens below))	c.1	Not for loan		BTH0006275

Bachelor's thesis

College of Industrial Technology.--
Bachelor of technology major in print media technology: Technological University of the Philippines,
2025.

Includes bibliographic references and index.

This project, titled "Utilization of Gumamela Flower (Hibiscus rosas-sinensis) as an
Alternative Source of Pigment for Watercolor," to produce an alternative ink for papers and
canvas using gumamela flowers, providing students with a sustainable option for
watercolor creation. The study focuses on investigating the safety, and environmental
impact of non-toxic pigments in watercolor painting. The abstract highlights the growing
demand for highlighting non-toxic pigments as a promising choice for artists seeking
creative expression and sustainability. The innovative method of boiling gumamela
flowers, collecting sap, dehydrating petals, and drying them for two weeks produces a
powdery substance, enhancing watercolor pigment production. Alkalinity results indicate
weak colorant pigmentation. According to Adamson University Technology Research and
Development Center (AUTRDC) the evaluation results of viscosity using the Engler
method was not applicable due to the insufficient volume of 60 ml required to achieve the
best fluid consistency, a minimum volume of 250 ml is necessary. Permanence testing
revealed that the color remained unchanged without fading after several days. The
transparency test indicated a semi-transparent quality as the watercolor overlapped a
previously added dark ink line. Expert and student evaluations in the field of printing were
conducted to assess the produced watercolor's acceptability in terms of functionality,
workability, durability, aesthetics, economy, and safety. The overall mean rating was 4.58
with descriptive rating of Highly Acceptable. Economy scored 4.56, and Workability
scored 4.35, showing excellent performance overall. Indicates that the produce is
acceptable as an alternative source of pigment for watercolor.

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