Antifungal activity of edible coating made from chitosan and lactoperoxidase system against Phomopsis sp. RP257 and Pestalotiopsis sp. isolated from mango,Journal of Food Safety

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Antifungal activity of edible coating made from chitosan and lactoperoxidase system against Phomopsis sp. RP257 and Pestalotiopsis sp. isolated from mango
Journal of Food Safety ( IF 1.9 ) Pub Date : 2020-02-27 , DOI: 10.1111/jfs.12785
Cissé Mohamed ₁ , N'guessan Elise ₁ , Tia V. Etienne ₁ , Gérard Loiseau ₂ , Didier Montet ₂

Affiliation

Lactoperoxidase system (LPOS) was incorporated into chitosan solutions (0.5, 1, and 1.5%) to protect mangoes against two strains of fungi. Coating solutions effectiveness in vitro (in Petri dish) and in vivo (on mango) were studied on fungal (Phomopsis sp. RP257 and Pestalotiopsis sp.) growth isolated from mango cv Amelie . In vitro, chitosan concentration at least 1% containing or not LPOS effectively inhibited Pestalotiopsis sp. growth at 100%. Presence of LPOS or Lactoperoxydase system with iodine (LPOSI) in chitosan at 0.5% increased the percentage of inhibition from 26 to 93%. Edible films with LPOS inhibited Phomopsis sp. RP257 particularly when LPOS was incorporated in chitosan concentrations of 1 and 1.5%. Iodine did not influenced antifungal activity of LPOS against Pestalotiopsis sp. but decreased activity antifungal toward Phomopsis sp. RP257. The properties (water vapor permeability and mechanical properties) of chitosan films were not significantly changed by the incorporation of the enzyme system. in vivo condition, chitosan coating at 1 and 1.5% with or without enzyme system was sufficient to inhibit totally (100%) Pestalotiopsis sp. and was 60% efficient against Phomopsis sp. with chitosan only at 1 and 1.5%. However, when coating solution mainly at 1 and 1.5% was enhanced by LPOS with or without iodine, it inhibited totally (100%) Phomopsis sp. RP257. The presence of iodine slightly reduced antifungal activity against Phomopsis sp. RP257.

中文翻译：

由壳聚糖和乳过氧化物酶系统制成的可食用涂层对拟茎点霉的抗真菌活性。RP257 和 Pestalotiopsis sp。从芒果中分离

乳过氧化物酶系统 (LPOS) 被掺入壳聚糖溶液（0.5%、1% 和 1.5%）中，以保护芒果免受两种真菌的侵害。在从芒果 cv Amelie 分离的真菌（拟茎点属 sp. RP257 和 Pestalotiopsis sp.）生长中研究了体外（在培养皿中）和体内（在芒果上）的涂层溶液有效性。在体外，含有或不含 LPOS 的壳聚糖浓度至少为 1%，可有效抑制 Pestalotiopsis sp。增长 100%。壳聚糖中含有 0.5% 碘 (LPOSI) 的 LPOS 或乳过氧化物酶系统的存在将抑制百分比从 26% 增加到 93%。具有 LPOS 的可食用薄膜抑制拟茎点霉属。RP257 特别是当 LPOS 以 1% 和 1.5% 的浓度加入壳聚糖时。碘不影响 LPOS 对 Pestalotiopsis sp. 的抗真菌活性。但对拟茎点霉属的抗真菌活性降低。RP257。壳聚糖薄膜的性能（水蒸气渗透性和机械性能）并未因酶系统的掺入而发生显着变化。在体内条件下，有或没有酶系统的 1% 和 1.5% 壳聚糖涂层足以完全抑制（100%）Pestalotiopsis sp。并且对拟茎点霉属有 60% 的效率。壳聚糖只有 1% 和 1.5%。然而，当含碘或不含碘的 LPOS 增强主要为 1% 和 1.5% 的涂层溶液时，它完全（100%）抑制了拟茎点霉属。RP257。碘的存在略微降低了对拟茎点霉属的抗真菌活性。RP257。5% 有或没有酶系统足以完全抑制（100%）Pestalotiopsis sp。并且对 Phomopsis sp. 有 60% 的效率。壳聚糖只有 1% 和 1.5%。然而，当含碘或不含碘的 LPOS 增强主要为 1% 和 1.5% 的涂层溶液时，它完全（100%）抑制了拟茎点霉属。RP257。碘的存在略微降低了对拟茎点霉属的抗真菌活性。RP257。5% 有或没有酶系统足以完全抑制（100%）Pestalotiopsis sp。并且对拟茎点霉属有 60% 的效率。壳聚糖只有 1% 和 1.5%。然而，当含碘或不含碘的 LPOS 增强主要为 1% 和 1.5% 的涂层溶液时，它完全（100%）抑制了拟茎点霉属。RP257。碘的存在略微降低了对拟茎点霉属的抗真菌活性。RP257。

更新日期：2020-02-27

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