|
|
|
| Plano de Ação: | 10.24.00.040.00.02 |
| Descrição: | SILVA, I. S. O.; SILVA, A. M. ; TERAO, D.; BEHRENS, J. H.; MELO, W. L. B.; BIZETO, M. A.; CAMILO, F. F.; FRACAROLLI, J. A.; BIASOTO, A. C. T. Impact of sustainable and innovative postharvest plant patology techniques in the sensory characteristics and aceitability of guava, orange and papaya. In: SIMPóSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS E NUTRIÇÃO, 16., 2025, Águas de Lindóia. Anais [...]. Campinas: Galoá, 2025. SLACAN. Pôster 332997. |
| Parceria/partes: | Embrapa Instrumentação (CNPDIA), UFBA - Universidade Federal da Bahia, UNICAMP - Universidade Estadual de Campinas, UNIFESP - Universidade Federal de São Paulo, |
| Conteúdo: | Brazil, the world’s third-largest fruit producer, faces postharvest losses due to fungi, prompting the search for alternatives to chemical treatments. This study evaluated how sustainable antifungal strategies—ultraviolet C (UV-C) radiation, nanoemulsion of oregano essential oil metabolites, and combined application (UV-C + nanoemulsion)—influenced the sensory characteristics and consumer acceptability of ‘Suprema’ guava, ‘Lima’ orange, and ‘Papaia’ papaya. For each variety, 10 fruits per treatment were individually processed, in addition to a control group (n=10). Modulated UV-C light was applied to guava (0.99 kJ m⁻², 30 Hz) and papaya (0.44 kJ m⁻², 30 Hz), and continuous UV-C light was applied to orange (1.99 kJ m⁻², 0 Hz). The nanoemulsions were formulated in a 2% (w/v) chitosan solution and its properties will be presented on the poster due to word limitation. 1 mL fruit⁻¹ (7.5 µL mL⁻¹; ≈ 0.71% w/w = 7.1 mg fruit oil⁻¹) was used for guava and orange and 2 mL fruit⁻¹ (5.0 µL mL⁻¹; ≈ 0.48% w/w = 9.5 mg fruit oil⁻¹) for papaya. In the combined treatment, UV-C was applied followed by nanoemulsion spraying. After the treatments, the fruits were stored at 20 ± 2 °C for 1 day (guava) and 2 days (orange and papaya), conditions that reproduced commercial fruit establishments. The affective test was conducted with 85 consumers, and the samples were identified with three digits. Appearance and aroma acceptance were assessed using a 9-point hybrid hedonic scale. The intensity of sensory attributes (brightness, aroma, and expected flavor and juiciness of the fruit) was quantified using a 9-cm unstructured scale, anchored at the extremes with “weak” and “Strong” Statistical analyses included ANOVA followed by Tukey’s test (α = 0.05). The results indicated a matrix-dependent effect: in guava, the nanoemulsion increased acceptance and attributes (brightness, expected flavor/juiciness, and aroma intensity) (ANOVA, p < 0.05). In orange, the combined treatment increased acceptance of the juice’s appearance and aroma and increased brightness and aromatic intensity (ANOVA, p < 0.05). In papaya, UV-C alone improved acceptance of the whole fruit’s appearance and aroma, brightness, and expectations of flavor/juiciness (ANOVA, p < 0.05). It is concluded that the emerging treatments tested can improve the sensory characteristics of the fruit and its acceptability, while controlling post-harvest fungal diseases, in a sustainable way for the environment (natural and biodegradable product) and for consumer health (absence of toxic chemical residues), being important to select the most appropriate strategy for each fruit. |
| Observaçao: | Acessível em: https://proceedings.science/slacan-2025/trabalhos/impact-of-sustainable-and-innovative-postharvest-plant-patology-techniques-in-th?lang=pt-br Cadastro no PAT realizado em ano posterior ao da publicação dos anais por determinação do 1º autor local. (ID_PAT: 37245) |
|
|
|
| Plano de Ação: | 10.24.00.040.00.02 |
| Descrição: | SILVA, I. S. O.; SILVA, A. M. ; TERAO, D.; BEHRENS, J. H.; MELO, W. L. B.; BIZETO, M. A.; CAMILO, F. F.; FRACAROLLI, J. A.; BIASOTO, A. C. T. Sustainable and innovative postharvest strategies for managing anthracnose in guavas. In: SIMPóSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS E NUTRIÇÃO, 16., 2025, Águas de Lindóia. Anais [...]. Campinas: Galoá, 2025. SLACAN. Pôster 332993. |
| Parceria/partes: | Embrapa Instrumentação (CNPDIA), UFBA - Universidade Federal da Bahia, UNICAMP - Universidade Estadual de Campinas, UNIFESP - Universidade Federal de São Paulo, |
| Conteúdo: | Guava (Psidium guajava L.) is highly susceptible to postharvest anthracnose disease, caused by the fungus Colletotrichum gloeosporioides complex. Therefore, postharvest techniques have been sought to reduce the disease without compromising the human health, environment, and sensory characteristics of the fruit. Thus, the objective was to evaluate the postharvest application in guava of modulated ultraviolet-C radiation (UV-C dose 0.99 kJ/m2, frequency of 30 Hz), a new UVC technique, metabolites of oregano essential oil in chitosan nanoemulsion (7.5 µL/mL concentration, use at 1mL per fruit), and the combination (UV-C followed by nanoemulsion) and alteration in the sensory characteristics of the fruit. ‘Suprema’ guavas were organized into groups of 6 units per treatment; a set of 12 fruits was maintained as a control (untreated). After treatments, guavas were stored at 20 ± 2°C for 1 day. The control difference test (0 = no difference, 9 = extremely different) was applied to 31 trained evaluators in individual booths. To analyze differences with the control of guava´s appearance and gloss intensity, the fruits were shown whole on a white porcelain plate. For detect aroma differences, whole guavas were placed in a glass jar covered with a glass Petri dish, and sliced guava pieces (30 g, 2 cm) were served in wine glasses covered with a watch glass. Each panelist received the control sample along with coded samples (including the control labeled with a three-digit random codes) to evaluate the degree of difference from the control in relation to appearance, gloss intensity, aroma of the whole fruit, and aroma of the cut fruit. Data was subjected to ANOVA followed by Dunnett’s test (P ≤ 0.05). For appearance and gloss intensity, only the combined treatment (UV-C followed by nanoemulsion) differed from the control. Regarding the aroma of the whole fruit, guavas treated with the nanoemulsion differed from the control. This treatment also differed from the control in the aroma of the cut fruit, as did the combined treatment (UV-C followed by nanoemulsion). It is concluded that the nanoemulsion and nanoemulsion combined with modulated UV-C radiation postharvest treatments resulted in changes in the sensory characteristics of guavas. In contrast, modulated UV-C radiation did not induce detectable sensory changes in the fruit, representing a promising alternative for the postharvest management of anthracnose to guava. |
| Observaçao: | Acessível em: https://proceedings.science/slacan-2025/trabalhos/sustainable-and-innovative-postharvest-strategies-for-managing-anthracnose-in-gu?lang=pt-br Cadastro no PAT realizado em ano posterior ao da publicação dos anais por determinação do 1º autor local. (ID_PAT: 37244) |