Preparation and Evaluation of Ethylene Absorbers from Zeolite A/KMnO4 Composite for Monitoring of Silk Banana (Musa sapientum L.) Ripening
Ethylene absorptive properties of zeolite A were improved by strong bases and potassium permanganate (KMnO4). The zeolite surface was activated with a solution of potassium hydroxide (KOH) and sodium hydroxide (NaOH) at concentrations of 1, 2 and 3M. Activated zeolites were soaked in a 5 w/v% soluti...
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| Main Authors: | , , , |
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| Format: | บทความวารสาร |
| Language: | English |
| Published: |
Science Faculty of Chiang Mai University
2019
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| Online Access: | http://it.science.cmu.ac.th/ejournal/dl.php?journal_id=9408 http://cmuir.cmu.ac.th/jspui/handle/6653943832/64185 |
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| Institution: | Chiang Mai University |
| Language: | English |
| Summary: | Ethylene absorptive properties of zeolite A were improved by strong bases and potassium permanganate (KMnO4). The zeolite surface was activated with a solution of potassium hydroxide (KOH) and sodium hydroxide (NaOH) at concentrations of 1, 2 and 3M. Activated zeolites were soaked in a 5 w/v% solution of KMnO4 for 5 hours, with powder collected after freeze-drying. The effects of ethylene absorbers with zeolite-KMnO4 and without as control on Silk bananas during storage at room temperature were investigated. Silk bananas and zeolite-KMnO4 tablets were evaluated daily for changes in total sugar content and peel and tablet color. Silk bananas without zeolite-KMnO4 tablets were ripe after 2 days and total sugar content increased rapidly after 4 days. Contrarily, Silk bananas with zeolite-KMnO4 tablets delayed the development of the yellow color of banana peel for 5 days and total sugar content slowly increased after 5 days. On the other hand, the color of zeolite-KMnO4 tablets stored with banana changed from light violet to deep blue. °Bx of bananas without zeolite-KMnO4 tablet significantly increased after 5 days while bananas with zeolite-KMnO4 tablet remained comparatively lower for up to one week. |
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