Asgarian Zahra Sadat, Palou Lluís, Souza Ricardo Felipe Lima de, Quintanilla Paloma G, Taberner Verònica, Karimi Rouhollah, Pérez-Gago María Bernardita
Grapevine Production and Genetic Improvement Department, Iranian Grape and Raisin Institute, Malayer University, Malayer 65719-95863, Iran.
Centre de Tecnologia Postcollita (CTP), Institut Valencià d'Investigacions Agràries (IVIA), Montcada, 46113 València, Spain.
Foods. 2023 Aug 7;12(15):2978. doi: 10.3390/foods12152978.
In this study, the effect of hydroxypropyl methylcellulose (HPMC) and gum Arabic (GA) edible coatings amended with 0.2% geraniol (GE) were evaluated for the control of brown rot, caused by , on artificially inoculated plums ( Lindl., cv. Angeleno) stored for 5 weeks at 1 °C. Brown rot is the most important pre- and postharvest fungal disease of stone fruits, causing severe economic losses worldwide. Geraniol is an important constituent of many essential oils that can be obtained as a byproduct from different industrial procedures, such as those of the juice industry. Fruit postharvest quality was also evaluated after 5 and 8 weeks of storage at 1 °C, followed by 3 days at 7 °C plus 5 days at 20 °C, simulating packinghouse, transport, and retail shelf-life conditions, respectively. HPMC coatings containing 0.2% GE reduced the incidence and severity of brown rot by 37.5 and 64.8%, respectively, compared to uncoated fruit after 5 weeks of storage at 1 °C. HPMC-coated plums, with and without GE, showed the highest level of firmness, the lowest change in external peel color parameters (L*, a*, b*, C*, hue), and the lowest flesh bleeding compared to uncoated control and GA-coated samples throughout the entire storage period, which correlated with a higher gas barrier of these coatings without negatively affecting sensory quality. Furthermore, the HPMC-0.2% GE coating provided the highest gloss to coated plums, showing the potential of this coating as a safe and environmentally friendly alternative to conventional fungicides and waxes for brown rot control and quality maintenance of cold-stored plums.
在本研究中，评估了用0.2%香叶醇（GE）改良的羟丙基甲基纤维素（HPMC）和阿拉伯胶（GA）可食用涂层对由[病原菌名称缺失]引起的褐腐病的控制效果，该病原菌侵染了在1℃下储存5周的人工接种的李子（Prunus domestica Lindl.，品种为Angeleno）。褐腐病是核果采前和采后最重要的真菌病害，在全球范围内造成严重的经济损失。香叶醇是许多香精油的重要成分，可作为不同工业过程（如果汁工业）的副产品获得。在1℃下储存5周和8周后，接着分别在7℃下放置3天和在20℃下放置5天，模拟包装厂、运输和零售货架期条件，评估果实采后品质。与在1℃下储存5周后的未涂层果实相比，含有0.2%GE的HPMC涂层分别使褐腐病的发病率和严重程度降低了37.5%和64.8%。在整个储存期间，与未涂层对照和GA涂层样品相比，涂有HPMC的李子（无论有无GE）表现出最高的硬度水平、外部果皮颜色参数（L*、a*、b*、C*、色调）的最小变化以及最低的果肉渗血，这与这些涂层具有较高的气体阻隔性相关，且不会对感官品质产生负面影响。此外，HPMC - 0.2%GE涂层为涂覆的李子提供了最高的光泽度，表明该涂层作为一种安全且环保的替代物，用于控制冷藏李子的褐腐病和维持品质，替代传统的杀菌剂和蜡具有潜力。
