000			02716nam a22003137a 4500
003			OSt
005			20250716093455.0
008			250716b |||||||| |||| 00| 0 eng d
040			_aTUPM _bEnglish _cTUPM _dTUPM _erda
050			_aBTH RB 37 _bE85 2025
100			_aBulo, Camille V. _eauthor
245			_aBioactive chitosan-based films with kamias (averrhoa bilimbi) leaf extract for food packaging/ _cCamille V. Bulo, Erica Mae T. Namang, and Erica Angeli Seno.--
260			_aManila: _bTechnological University of the Philippines, _c2025.
300			_axiv, 141pages: _c29cm.
336			_2rdacontent
337			_2rdamedia
338			_2rdacarrier
500			_aBachelor's thesis
502			_aCollege Of Science.-- _bBachelor of applied science in laboratory technology: _cTechnological University of the Philippines, _d2025.
504			_aIncludes bibliographic references and index.
520			_aFood spoilage due to microbial contamination and inadequate packaging contributes significantly to global food waste, with nearly 14% of food lost before retail for fruits and vegetables accounting for nearly half of this loss. This study aimed to develop a bioactive chitosan-based film incorporated with varying concentrations (0%, 0.2%, 0.5% and 1.0%) of Kamias (Averrhoa bilimbi) leaf extract (KLE) for food packaging. The films were assessed based on their physicochemical, durability, mechanical, barrier, thermal, and biodegradation properties enhanced film thickness, density, color, opacity, and water resistance. FTIR analysis confirmed successful incorporation of KLE, while Light microscopy and SEM revealed increased surface roughness at higher KLE levels. The film with 0.5% KLE demonstrated the highest tensile strength (117.96 MPa) while 0.2% KLE yielded the greatest flexibility (62.44% elongation at break). Thermal analysis indicated increased heat stability with higher KLE content. Soil burial tests revealed slower degradation with increasing KLE, especially at deeper burial depths, indicating improved durability. Antimicrobial activity, tested using the disc diffusion method against Escherichia coli and Staphylococcus aureus, showed partial inhibitory effects in the control chitosan film. However, the addition of KLE did not improve antimicrobial performance under the tested conditions. Despite this, consumer evaluation favored films with 0.2% and 0.5% KLE for usability and acceptability.
650			_aChitosan films
650			_aKamias leaf extract
650			_aBioactive packaging
700			_aBulo, Camille V. _eauthor
700			_aNamang, Erica Mae T. _eauthor
700			_aSeno, Erica Angeli _eauthor
942			_2lcc _cBTH COS _n0
999			_c30404 _d30404