Application of bio-based thermoplastic starchpolylactic acidpolybutylene adipate-co-terephthalate film for the modified atmosphere packaging of red chili and ginger

Name: Balanon, Dane Archibald G.

LCSH: Kasetsart University -- Theses. M.S. (Packaging Technology) 2022

Classification :.LCCS: TS198.3

LCSH: Kasetsart University. -- Department of Packaging and Materials Technology -- Theses

LCSH: Kasetsart University -- Theses. M.S. (Packaging Technology) 2022

LCSH: Plastics in packaging

LCSH: Plastic films

LCSH: Starch

LCSH: Thermoplastics

LCSH: Polylactic acid

LCSH: Polybutenes

LCSH: Terephthalic acid

Abstract: The objectives of this study were to determine the respiratory activity of red chili, effect of controlled atmosphere storage (CAS) and modified atmosphere packaging (MAP) using bio-based TPS/PLA/PBAT film on the quality of red chili. Respiration rate was measured using the closed system method. Red chili was classified as a low respiring produce with respiration rates of 8-10 mg CO2/kg-hr at 5°C and 14-16 mg CO2/kg-hr at 10°C. CAS was conducted by exposing samples to oxygen concentrations of 1%, 4%, and 7% in combination with 3% and 6% carbon dioxide under a completely randomized design and stored for 4 weeks. Quality parameters such weight loss, firmness, color, fungal infestation, and sensory evaluation were monitored every week. The beneficial CA combination for red chili was found out to be 4% & 7%O2 combined with 3%CO2 for 5°C to prevent drastic weight loss, loss of firmness and color parameters consistency. A 1%O2 resulted to low mold infestation while 4%O2 combined with 3%CO2 at 10°C storage resulted to least weight loss and stable color attributes. Modified atmosphere packaging was applied to red chili at 5°C and 10°C using commercial PP and bio-based film of two formulations; (F1: 40TPS/20PLA/40PBAT) (F2: 40TPS/40PLA/20PBAT). Physical quality parameters (weight loss, firmness, color, fungal decay) and biochemical properties (vitamin C, total phenolic contents, anti-oxidant activity, capsaicin) were monitored every 5 days. Biochemical parameters vitamin C, antioxidant activity, and capsaicin tend to follow a natural trend of decay but higher values in MAP samples were observed than control indicating the benefit of the packaging intervention. Color attributes were observed to be higher in control and bio-based samples. PP packaging prevented drastic loss of moisture and firmness due to its low water vapor permeability (WVP) while the hydrophilic nature of the bio-based films imparted a high WVP resulted to high weight loss and firmness reduction at the end of storage. MAP of red chili could produce weight and firmness loss that is within the acceptable limit (5-10% weight loss) up to 20 days whereas PP could keep red chili also for 20 days 10°C but limited by mold growth. Bio-based film had a comparable performance with PP and could potentially be an environmentfriendly alternative packaging for petroleum-based films.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Pattarin Leelaphiwat

Role: Thesis Advisor

Name: Piyawanee Jariyasakoolroj

Role: Thesis Co-Advisor

Name: Amporn Sane

Role: Thesis Co-Advisor

Created: 2022

Modified: 2025-06-23

Issued: 2025-06-23

วิทยานิพนธ์/Thesis

วิทยานิพนธ์/Thesis

application/pdf

URL: https://kasetsart.idm.oclc.org/login?url=http://www.lib.ku.ac.th/KUthesis/2565/balanon-dan-all.pdf

CallNumber: TS198.3.F5

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Packaging Technology

Grantor: Kasetsart University

©copyrights Kasetsart University

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