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Physicochemical properties of ph-responsive films incorporating bacterial cellulose, chitosan and natural colourants / Nidaulhasanah Binti Tajuddin Nirwan

By:

Nidaulhasanah Binti Tajuddin Nirwan [author.]

Material type: Text

text

Media type:

unmediated

Carrier type:

volume

ISBN:

THE0010931 (Local)

Subject(s):

Online resources:

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Dissertation note: Final Year Report (Bachelor of Chemical Engineering Technology (Hons) ) -- Universiti Malaysia Pahang Al-Sultan Abdullah - 2025 Abstract: This study developed smart colorimetric films by incorporating natural pH indicators, anthocyanin (ACN) from red cabbage and curcumin (CC), into bacterial cellulose (BC) films at varying ratios (ACN, CC, ACN25:CC75, ACN50:CC50, and ACN75:CC25). The addition of these indicators influenced the films’ physical and mechanical properties, with thickness ranging from 0.06 mm to 0.23 mm, moisture content between 8.62% and 47.43%, and water solubility reaching 43.25% in ACN-based films, indicating improved degradability. FTIR analysis confirmed successful integration, with characteristic functional groups of anthocyanins and curcumin present. Mechanical testing revealed that while the control film had the highest tensile strength (34.25 MPa), ACN75:CC25 exhibited the highest flexibility with 17.44% elongation at break, making it a promising candidate for flexible packaging applications. Color stability analysis showed that ACN-rich films maintained their purple hue, while CC-based films remained yellow, with blended formulations displaying gradual color transitions. These films exhibited excellent pH responsiveness, proving their potential as smart indicators for food packaging. Future studies are recommended to explore a wider range of ACN:CC ratios to further refine film properties for specific applications. Therefore, this study aims to investigate the effects of incorporating anthocyanin from red cabbage and curcumin at different ratios into the bacterial cellulose/chitosan matrix on its physicochemical properties.

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Title notes ( 4 )

Holdings
Item type	Current library	Call number	Status	Date due	Barcode
Final Year Report	UMPLIB GAMBANG	FTKKP .N53 2025 r Bc. (Browse shelf(Opens below))	Not for loan		T000004369

Faculty of Chemical and Process Engineering Technology

Final Year Report (Bachelor of Chemical Engineering Technology (Hons) ) -- Universiti Malaysia Pahang Al-Sultan Abdullah - 2025

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This study developed smart colorimetric films by incorporating natural pH indicators, anthocyanin (ACN) from red cabbage and curcumin (CC), into bacterial cellulose (BC) films at varying ratios (ACN, CC, ACN25:CC75, ACN50:CC50, and ACN75:CC25). The addition of these indicators influenced the films’ physical and mechanical properties, with thickness ranging from 0.06 mm to 0.23 mm, moisture content between 8.62% and 47.43%, and water solubility reaching 43.25% in ACN-based films, indicating improved degradability. FTIR analysis confirmed successful integration, with characteristic functional groups of anthocyanins and curcumin present. Mechanical testing revealed that while the control film had the highest tensile strength (34.25 MPa), ACN75:CC25 exhibited the highest flexibility with 17.44% elongation at break, making it a promising candidate for flexible packaging applications. Color stability analysis showed that ACN-rich films maintained their purple hue, while CC-based films remained yellow, with blended formulations displaying gradual color transitions. These films exhibited excellent pH responsiveness, proving their potential as smart indicators for food packaging. Future studies are recommended to explore a wider range of ACN:CC ratios to further refine film properties for specific applications. Therefore, this study aims to investigate the effects of incorporating anthocyanin from red cabbage and curcumin at different ratios into the bacterial cellulose/chitosan matrix on its physicochemical properties.