| Résumé: | In this study, we assessed the quality of essential oil recovered from fruit drop biomass and assessed its usefulness in preventing postharvest diseases in the tangerine ‘Sai-Namphaung’. Greening was the primary cause of the fruit drop, based on the enduring symptoms and occurrence of the disease in the area. Limonene, together with the presence of β-pinene and linalool, was discovered to be prevalent in essential oils of tangerine fruit peel, particularly that of ‘Sai-Namphaung’. Through isolation of citrus postharvest fungi, we were able to identify four genera which were later DNA sequenced using Internal Transcribed Spacer: ITS and subjected to Basic Local Alignment Search Tool (BLAST), with a high possibility (>98% similarity) of being <i>Penicillium digitatum</i>, <i>Colletotrichum gloeosporioides</i>, <i>Fusarium sarcochrum</i> and <i>Geotrichum candidum</i>. Essential oil from ‘Sai-Namphaung’ and ‘Fremont’ peel biomass positively inhibited green mold rot and citrus anthracnose caused by <i>P. digitatum</i>, <i>C. gloeosporiodes</i>, but were less effective than the commercial citrus oil and <i>Zanthoxylum myriacanthum</i> oil. This is the first evidence of ‘Sai-Namphaung’ postharvest diseases caused by these two fungi and their controls using citrus essential oil.
|
|---|