This study evaluated if coatings with chitosan (Chi) and phenolic-rich extract from acerola (Malpighia emarginata D.C., PEA) or jabuticaba (Plinia jaboticaba (Vell.) Berg, PEJ) processing by-products are effective to control the development of rot caused by Lasiodiplodia pseudotheobromae, L. viticola, L. euphorbicola, L. theobromae and L. hormozganensis in papaya (Carica papaya L.) fruit. Effects of formulated coatings on some physicochemical parameters indicative of postharvest quality of papaya were investigated. Twenty-six different phenolics were found in PEA and PEJ, including flavonoids, stilbenes, tannins and phenolic acids. Chi (1–5 mg/mL), PEA and PEJ (25–100 mg/mL) separately caused mycelial growth inhibition on all isolates. Combinations of Chi (3 and 4 mg/mL) and PEA (50 and 75 mg/mL) or PEJ (75 and 100 mg/mL) had additive interactions. Coatings with Chi (4 mg/mL) and PEA (50 or 75 mg/mL) or PEA (75 or 100 mg/mL) inhibited rot development in papaya fruit infected with Lasiodiplodia isolates during 8 days of room temperature storage. Coatings with 4 mg/mL Chi and 75 mg/mL PEA or 100 mg/mL PEJ were the most effective to control rot development. These coatings did not affect negatively physicochemical parameters indicative of postharvest quality of papaya fruit during storage. Coatings with combined Chi and PEA or PEJ could be novel strategies to control postharvest rot caused by Lasiodiplodia in papaya fruit.

这项研究评估了用壳聚糖（Chi）和来自西印度虎（Malpighia emarginata DC，PEA）或jabuticaba（Plinia jaboticaba（Vell。Berg，PEJ））加工副产物的富酚提取物涂层是否能有效控制腐烂引起的腐烂通过Lasiodiplodia pseudotheobromae，L.葡萄生单轴霉，L. euphorbicola，L. theobromae和L. hormozganensis在番木瓜（番木瓜L.）水果。研究了配制的涂料对指示番木瓜收获后品质的某些理化参数的影响。在PEA和PEJ中发现了26种不同的酚类化合物，包括类黄酮，丁苯醚，丹宁酸和酚酸。Chi（1-5 mg / mL），PEA和PEJ（25-100 mg / mL）分别引起所有分离株的菌丝体生长抑制。Chi（3和4 mg / mL）和PEA（50和75 mg / mL）或PEJ（75和100 mg / mL）的组合具有加性相互作用。涂有Chi（4 mg / mL）和PEA（50或75 mg / mL）或PEA（75或100 mg / mL）的涂层可抑制感染Lasiodiplodia的木瓜果实中的腐烂发展在室温储存8天后分离。4 mg / mL Chi和75 mg / mL PEA或100 mg / mL PEJ的涂层最有效地控制腐烂。这些涂层不会对存储期间番木瓜果实采后质量产生不利的物理化学参数影响。Chi和PEA或PEJ结合的涂层可能是控制木瓜果实中Lasiodiplodia引起的采后腐烂的新策略。