Characterization of bionanocomposite film chitosan-carrageenan reinforced with cellulose nanocrystals from mango seed husk as potential food packaging/ Kyla Crystek P. Asanza, Tristine Raq S. Bercasio, and Lyka Mae S. Padasas .--

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Asanza, Kyla Crystel P [author ]

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Material type: Text

TextPublication details: Manila: Technological University of the Philippines, 2024.Description: ix, 129pages: 29cm. +1 CD-ROM (4 3/4in.)Content type:

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BTH RB 37 A83 2024

Dissertation note: College of Science .-- Bachelor of Applied Science major in Laboratory Technology: Technological University of the Philippines, 2024. Summary: This study characterized the bio-wax extract obtained from Taro leaves (Colocasia esculenta (L.) Schott) using the Solvent Extraction method, yielding an average of 0.2427 grams of wax per gram of fresh leaves. The Fourier-Transform Infrared Spectroscopy (FT- IR) revealed the presence of long aliphatic chains, esters, or fatty acids. The Differential Scanning Calorimeter (DSC) results showed two distinct melting events at 75.80°C and 79.24°C, indicating the presence of multiple components in the bio-wax. The solubility tests revealed that the bio-wax exhibited solubility in non-polar solvents while it remained insoluble in polar solvents. Heat sensitivity tests demonstrated that the bio-wax is thermally stable up to 60°C, with degradation starting at 90°C and complete melting at 120°C. The coated cardboard was found to be hydrophobic according to the measured contact angle of droplets of distilled water on its surfaces above 90°. Chemical resistance revealed that the coated cardboard resisted penetration by 0.1 N hydrochloric acid and 4% sodium hydroxide but was penetrable by ethanol and n-hexane. Water absorption tests demonstrated that the coated cardboard absorbed significantly less water compared to uncoated cardboard. Further research is recommended to explore the potential of bio-wax as a sustainable and renewable hydrophobic material for various applications. Keyword: Colocasia esculenta (L.) Schott, Bio-wax, Hydrophobic, and Contact Angle

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Item type	Current library	Shelving location	Call number	Copy number	Status	Notes	Date due	Barcode
Bachelor's Thesis COS	TUP Manila Library	Thesis Section-2nd floor	BTH RB 37 A83 2024 (Browse shelf(Opens below))	c.1.	Not for loan	For library use only		BTH0004996

Thesis (undergraduate)

College of Science .-- Bachelor of Applied Science major in Laboratory Technology: Technological University of the Philippines, 2024.

Includes bibliography:

This study characterized the bio-wax extract obtained from Taro leaves (Colocasia
esculenta (L.) Schott) using the Solvent Extraction method, yielding an average of 0.2427

grams of wax per gram of fresh leaves. The Fourier-Transform Infrared Spectroscopy (FT-
IR) revealed the presence of long aliphatic chains, esters, or fatty acids. The Differential

Scanning Calorimeter (DSC) results showed two distinct melting events at 75.80°C and
79.24°C, indicating the presence of multiple components in the bio-wax. The solubility
tests revealed that the bio-wax exhibited solubility in non-polar solvents while it remained
insoluble in polar solvents. Heat sensitivity tests demonstrated that the bio-wax is thermally
stable up to 60°C, with degradation starting at 90°C and complete melting at 120°C. The
coated cardboard was found to be hydrophobic according to the measured contact angle of
droplets of distilled water on its surfaces above 90°. Chemical resistance revealed that the
coated cardboard resisted penetration by 0.1 N hydrochloric acid and 4% sodium hydroxide
but was penetrable by ethanol and n-hexane. Water absorption tests demonstrated that the
coated cardboard absorbed significantly less water compared to uncoated cardboard.
Further research is recommended to explore the potential of bio-wax as a sustainable and
renewable hydrophobic material for various applications.
Keyword: Colocasia esculenta (L.) Schott, Bio-wax, Hydrophobic, and Contact Angle

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