Laboratory of Biopolymers and Pilot Plant of Bioprocessing of Agro-Industrial and Food By-Products, Biotechnology Department, Universidad Autonoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco No. 186, Iztapalapa, 09340 Mexico City, Mexico.
Biotechnology and Food Science Department, Instituto Tecnologico de Sonora, 5 de febrero No. 818 sur, 85000 Obregon City, Sonora, Mexico.
Molecules. 2019 Jan 9;24(2):219. doi: 10.3390/molecules24020219.
The market trend for pitaya is increasing, although the preservation of the quality of this fruit after the harvest is challenging due to microbial decay, dehydration, and oxidation. In this work, the application of antimicrobial chitosan-based coatings achieved successful postharvest preservation of pitaya () during storage at 10 ± 2 °C with a relative humidity of 80 ± 5%. The solution of cross-linked chitosan with hydroxypropylmethylcellulose with entrapped Neem oil (16 g·L) displayed the best postharvest fruit characteristics. The reduction of physiological weight loss and fungal contamination, with an increased redness index and release of azadirachtin from the microencapsulated oil, resulted in up to a 15 day shelf life for this fruit. This postharvest procedure has the potential to increase commercial exploitation of fresh pitaya, owing to its good taste and high content of antioxidants.
火龙果的市场需求呈上升趋势，但由于微生物腐烂、脱水和氧化，收获后火龙果的质量保存极具挑战性。在这项工作中，应用基于壳聚糖的抗菌涂层，在 10 ± 2°C 、相对湿度 80 ± 5%的条件下，成功实现了火龙果的采后保鲜。用羟丙基甲基纤维素交联壳聚糖并包埋印楝油（16 g·L）的溶液显示出最佳的采后果实特性。该方法减少了生理失重和真菌污染，提高了红色指数，并从微胶囊油中释放出印楝素，使这种水果的货架期延长至 15 天。由于其良好的口感和高抗氧化剂含量，这种采后处理方法有可能增加新鲜火龙果的商业开发。
