ธนากร ปัญโญป้อ. การผลิตฟิล์มเซลลูโลสจากลำต้นเทียมกล้วยน้ำว้า (Musa x paradisiaca L.) ผสมสารสกัดหยาบเปลือกมังคุด (Garcinia mangostana L.) เพื่อถนอมรักษาผลไม้. Master's Degree(Biology). มหาวิทยาลัยพะเยา.ศูนย์บรรณสารและการเรียนรู้. : University of Phayao, 2566.
การผลิตฟิล์มเซลลูโลสจากลำต้นเทียมกล้วยน้ำว้า (Musa x paradisiaca L.) ผสมสารสกัดหยาบเปลือกมังคุด (Garcinia mangostana L.) เพื่อถนอมรักษาผลไม้
Production of Cellulose Films from Pseudo-Stem of Namwa Banana (Musa X Paradisiaca L.) Mixed with Crude Extract of Mangosteen Peel (Garcinia Mangostana L.) for Fruit Preservation
Abstract:
The objectives of this study were investigation of the properties (tensile strength, elongation at break, water vapor transmission rate and gas permeability rate), the comparative study of cellulose films efficiency for the preservation of mango and banana fruits, the biodegradation and antimicrobial activity of cellulose films from pseudo-stem of Namwa banana (Musa x paradisiaca L.) mixed with crude extracts of mangosteen peel (Garcinia mangostana L.) (0, 10, 100 และ500 mg/ml). The results showed that the cellulose films from pseudo-stem of Namwa banana mixed with crude extract of mangosteen peel at the concentration of 500 mg/ml had tensile strength and elongation at break were 0.24 ± 0.03 Mpa and 191.95 ± 3.19%, respectively. The tensile strength and elongation at break of cellulose films decreased when the concentrations of crude mangosteen peel were increased. The water vapor transmission rate and gas permeability rate of cellulose films mixed with crude extract of mangosteen peel at the concentration of 500 mg/ml were 1,635.83 ± 42.79 g/ (m2.24h) and 11,932.54 ± 1,098.79 g/ (m2.24h), respectively, which were significantly higher than those of commercial polyethylene films (p≤0.05). The high-water vapor transmission rate and high gas permeability rate released water vapor and ethylene. Consequently, the cellulose films significantly reduced the color index, disease index and weight loss of mango and banana fruits (p≤0.05). In addition, the biodegradation of cellulose film was also studied using landfill method. The results revealed that cellulose films showed high biodegradation within 6 weeks compared to the commercial polyethylene films. Moreover, the antimicrobial activity of the cellulose films was tested against Escherichia coli, Bacillus cereus, Pseudomonas aeruginosa, Staphylococcus aureus and Salmonella typhimurium. The cellulose films mixed with crude extract of mangosteen peel at the concentration of 500 mg/ml showed antimicrobial activity on the inhibition zone of B. cereus, S. aureus and S. typhimurium at 7.7 ± 0.7, 16.0 ± 3.0 and 7.5 ± 0.4 mm, respectively, Therefore, it can be concluded that the cellulose films from pseudo-stem of Namwa banana mixed with crude extract of mangosteen peel using for packaging can decrease the disease, extend fruit ripening. The cellulose films from pseudo-stem of Namwa banana and mangosteen peel could be used as environmentally friendly product in present and future world