Abstract:

In order to comprehensively understand the current research status of avocado preservation, the literature related to avocado preservation included in Web of Science database were taken as the object. The annual number of articles, countries, institutions, authors and keywords were visualized and analyzed by knowledge graph using CiteSpace bibliometric analysis software, and the research trend and hotspot of avocado preservation were summarized. Overall, the research heat of avocado preservation showed an upward trend. The research countries were mainly Mexico and South Africa, and the research institutions were mainly universities. In addition, the institutions and authors communicated more frequently, and formed a good cooperation network. Research hotspots included quality, fruit, Persea americana, Colletotrichum gloeosporioides, chilling injury etc. Keyword clustering revealed that the research on avocado preservation mainly focused on Colletotrichum gloeosporioides, heat treatment, pumice, softening and other topics. This paper pointed out that there were some problems of avocado fruit preservation, including cold damage caused by low temperature preservation, high incidence of anthracnose and insufficient research on biological preservation methods. Further research should pay more attention on low temperature preservation conditions, biological preservation methods and control of anthracnose in avocado preservation, in order to provide the new, environmentally friendly and effective postharvest preservation technologies for prolonging the preservation period of avocado fruit.

Key words: avocado, postharvest preservation, CiteSpace, knowledge graph, research review