碩士 / 國立中興大學 / 園藝學系 / 92 / The effects of 0.1%, 0.5%, 1%, 2% and 3% chitosan coating on the quality of ‘Sensation’, ‘Irwin’, ‘Chiin Hwang’ mangoes, sweet cherry, ‘Tainung No.2’ papaya, ‘Chi Ke’ longan, ‘Fen Ke’ longan, lemon, orange, wax apple, ‘Shui-Jing Bar’ guava and ‘Li-Tzy Bar’ guava fruits stored at 25℃ were investigated. In the meantime, the effects of chitosan coating combined with surfactants on qualities of ‘Li-Tzy Bar’ guava and‘Bao-Dao Jiao’ banana fruits were also evaluated and the gas permeability of chitosan film was measured.
The application of chitosan coating reduced weight loss and modified internal O2, CO2 and C2H4 level of most fruits. Chitosan coating delayed the changes of colors of ‘Chiin Hwang’ mango, ‘Tainung No.2’ papaya, ‘Li-Tzy Bar’ guava and lemon, decreased the respiration rate and ethylene production rate of ‘Tainung No.2’ papaya and ‘Li-Tzy Bar’ guava. Chitosan treated ‘Chiin Hwang’ mango, ‘Li-Tzy Bar’ guava, ‘Tainung No.2’ papaya, wax apple and ‘Shui-Jing Bar’ guava were firmer than the control. however, high chitosan concentration caused substantial accumulation of ethanol and acetaldehyde in ‘Sensation’ mango and induced off-flavor.
Chitosan combined with Triton X-100 treatment delayed the ripening of ‘Li-Tzy Bar’ guava, while Chitosan combined with Tween 60 showed no similar effect. ‘Bao-Dao Jiao’ banana when treated with the combination of chitosan and surfactant or surfactant alone could cause injury to banana peel, but were still capable of delaying banana ripening. The permeabilities of chitosan film decreased with the increasing thickness of the membrane. This seemed to indicate that chitosan maintaining the quality of coated fruits was attributed to the modification of gases compositions and vapor content in the fruits.
| Identifer | oai:union.ndltd.org:TW/092NCHU0378022 |
| Date | January 2004 |
| Creators | Yong Shen Yee, 楊沁儀 |
| Contributors | Deng-Tsen Horng, Ching-Chang Shiesh, 洪登村, 謝慶昌 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 97 |
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