Pusat Pengajian Teknologi Industri - Tesis
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- PublicationA Dual-Feature Active Packaging: Antimicrobial Release And Co₂ Scavenging For Fresh Produce Preservation(2025-08)Mohamad Jilani, NafeesaThis study focuses on the development and evaluation of active additives with dual-feature: antimicrobial release and CO₂ scavenging capabilities—for the preservation of fresh produce. In Phase 1, β-cyclodextrin (βCD) inclusion complexes were synthesized using linalool and eugenyl acetate through co-precipitation and kneading methods. Phase 2 focuses on the effect of selected dual-feature active additive in prolonging the shelf life of cherry tomatoes as a fresh produce model.
- PublicationInvestigation On The Potential Of Artocarpus Altilis Latex As Protein –Based Wound Healing Agent(2025-07)Selvaraja, Linesh KumarResearch on plant latex has been done extensively to evaluate its potential in wound healing. Artocarpus altilis (Breadfruit) is one of the plant species with medicinal properties such as diarrhoea, stomach aches, ear infections, fungal infections, injured eyes broken bone and wound. This study was done to evaluate the potential of breadfruit’s latex in wound healing through protein profiling and in-vitro studies. The breadfruit was collected from Bukit Mertajam, Pulau Pinang, Malaysia.
- PublicationHeterogeneous Sulfonated Polysulfone Membrane In Microbial Fuel Cell Fueled By Dewatered Sludge And Fruit Waste Using Bacillus Subtilis As Biocatalyst(2025-08)A. Pusphanathan, KavitaMicrobial fuel cell (MFC) is used as a bioelectrochemical system that converts organic waste, such as dewatered sludge and fruit waste, into electricity using engineered sulfonated polymeric membranes to enhance proton transfer and overall performance.The fabrication of advanced heterogenous sulfonated polymeric membranes for MFCs is the most potential topic at present to address the issue of substrate and microbe’s crossover, low proton transfer rates and higher internal resistance in the MFCs operation. In the present work, heterogenous sulfonated polysulfone crosslinked with sulfonated chitosan (SPSf/SCS) was utilized as proton exchange membrane in MFCs. The physical, chemical and electrochemical characterization of SPSf membrane with different immersion time in sulfonating agents were investigated as a screening procedure. The most well-performed SPSf was utilized as sulfonated polymer base to crosslink with sulfonated chitosan. Different formulations of SPSf/SCS were designed; namely SPSf/SCS-0.5 wt%, SPSf/SCS-0.75 wt% and SPSf/SCS-1 wt% and comprehensive physical, chemical, and electrochemical characterization was compared with the commercialized membrane Nafion 212.
- PublicationProduction Of Polyhydroxybutyrate (Phb) From Biomass Of Scenedesmus Sp. By Priestia Megaterium(2025-08)Hussain, Azieyati HaniThe high cost of carbon substrate for microbial production of polyhydroxybutyrate (PHB) currently remained as one of the obstacles in the industry, hampering the transition of conventional plastic to bioplastics. To address this situation, the biomass of Scenedesmus sp. was investigated as an alternative carbon substrate for PHB production by Priestia megaterium. First, carbohydrate content from biomass of Scenedesmus sp. was extracted using hydrothermal dilute-acid pretreatment. Among different H2SO4 concentration, temperature and treatment duration that were studied, it was found that pretreatment with 4% (v/v) H2SO4 at temperature of 105C for 30 min has released maximum total carbohydrate and total sugar of 10.66% (w/w) ± 0.05 and 8.11% (w/w) ± 0.08, respectively. Then, the growth of P. megaterium and the production of PHB in medium using sugar hydrolysate from Scenedesmus sp. (PM-MH) was evaluated for 120 h and compared to medium using glucose (PM-GLU). The maximum CDW of P. megaterium in PM-MH was 3.41 g/L, and total sugar consumed was 83.78%, which were comparable to PM-GLU (3.56 g/L, 75.7%). However, PHB yield in PM-MH was lower than PM-GLU, with value of 0.74 g/L and 1.51 g/L, respectively. Lastly, the properties of PHB produced from PM-MH (PHB-MH) was characterized and compared to the commercial PHB (PHB-C). FTIR analysis of PHB-MH confirmed the presence of functional groups unique to PHB, meanwhile DSC analysis result revealed the melting point (Tm) of PHB-MH to be 153.45°C, which is lower compared to PHB-C. All these findings demonstrate the potential use of microalgae as alternative carbon source in the production of PHB.
- PublicationInfluence Of Glucono-Delta Lactone On Starch-Plant Protein Interactions For Imitation Cheese Formulation(2025-08)Mohd Sakri @ Shukri, A’firahThe demand for plant-based alternatives to animal-based dairy products, fueled by health, environmental, and ethical considerations, has prompted research into the development of imitation cheese. Addressing the challenge of mimicking the unique functional and sensory attributes of natural cheese, this study aims to investigate the influence of glucono-delta-lactone (GDL) as a food-grade acidulant on starch-plant protein matrix characteristics, as a foundation for developing a plant-derived imitation cheese with physicochemical and functional properties comparable to dairy cheese.