Al-Askar Abdulaziz A, Rashad Ehsan M, Ghoneem Khalid M, Mostafa Ashraf A, Al-Otibi Fatimah O, Saber WesamEldin I A
Botany and Microbiology Department, Faculty of Science, King Saud University, Riyadh 11451, Saudi Arabia.
Seed Pathology Research Department, Plant Pathology Research Institute, Agricultural Research Center (ID: 60019332), Giza 12112, Egypt.
Plants (Basel). 2021 Feb 23;10(2):413. doi: 10.3390/plants10020413.
During preservation, Jerusalem artichoke (JA) tubers are subjected to deterioration by mold fungi under storage, which signifies a serious problem. A new blue mold () was recorded for the first time on JA tubers. Penicillium mold was isolated, identified (morphologically, and molecularly), and deposited in GenBank; (MW041259). The fungus has a multi-lytic capacity, facilitated by various enzymes capable of severely destroying the tuber components. An economic oil-based procedure was applied for preserving and retaining the nutritive value of JA tubers under storage conditions. Caraway and clove essential oils, at a concentration of 2%, were selected based on their strong antifungal actions. JA tubers were treated with individual oils under storage, kept between peat moss layers, and stored at room temperature. Tubers treated with both oils exhibited lower blue mold severity, sprouting and weight loss, and higher levels of carbohydrates, inulin, and protein contents accompanied by increased levels of defense-related phytochemicals (total phenols, peroxidase, and polyphenol oxidase). Caraway was superior, but the results endorse the use of both essential oils for the preservation of JA tubers at room temperature, as an economic and eco-safe storage technique against the new blue mold.
在保存期间，菊芋（JA）块茎在储存过程中会受到霉菌的侵害而变质，这是一个严重的问题。首次在菊芋块茎上记录到一种新的青霉（）。分离出青霉菌，进行了形态学和分子学鉴定，并保藏于GenBank；（MW041259）。这种真菌具有多种分解能力，各种酶能够严重破坏块茎成分，从而促进了这种能力。采用了一种经济的油基方法来在储存条件下保存菊芋块茎并保留其营养价值。基于其强大的抗真菌作用，选择了浓度为2%的香菜和丁香精油。菊芋块茎在储存过程中用单一精油处理，置于泥炭藓层之间，并在室温下储存。用两种精油处理的块茎青霉严重程度较低，发芽率和重量损失较低，碳水化合物、菊粉和蛋白质含量较高，同时与防御相关的植物化学物质（总酚、过氧化物酶和多酚氧化酶）水平增加有关。香菜精油效果更好，但结果支持使用这两种精油在室温下保存菊芋块茎，作为一种针对新青霉病的经济且生态安全的储存技术。
