Application of palladium-modified zeolite for prolonging post-harvest shelf life of banana

• Autores: Jing-Hua Tzeng, Chih-Huang Weng, Jenn-Wen Huang, Ching-Chang Shiesh, Yu-Hao Lin, Yao-Tung Lin
• Localización: Journal of the science of food and agriculture, ISSN 0022-5142, Vol. 99, Nº 7, 2019, págs. 3467-3474
• Idioma: inglés
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• Resumen

  • The marketability of banana is limited by the rapid rate of ripening. However, the traditional post-harvest technologies may not be desirable. The aim of this study was to investigate the potential of a reusable material for the food preservation industry. RESULTS The nanocomposite-based palladium (Pd)-modified zeolite (Pd/zeolite) was prepared by impregnating Pd into zeolite. Pd/zeolite had a Brunauer?Emmett?Teller dinitrogen specific surface area of 475 m2 g?1 with crystal structure similar to Y-zeolite. Transmission electron microscopy images showed the dispersion of Pd particles over the multi-pore zeolite support. Pd/zeolite uniquely acted as an adsorbent and a catalyst and was able to remove ethylene even after reaching breakthrough point. To prove Pd/zeolite is reusable, a 99 ± 0.8% ethylene removal efficiency still remained even after five consecutive cycles with repeated use of Pd/zeolite. The presence of Pd/zeolite significantly decreased the ethylene concentration during 18 days of storage at 20 ± 2 °C. CONCLUSIONS Pd/zeolite could delay the ripening of banana and improve its firmness and the peel color significantly. Findings indicated that the as-prepared Pd/zeolite is an effective adsorbent/catalyst with high potential for practical application in ethylene removal, especially for the post-harvest period. ? 2019 Society of Chemical Industry