Atividade antioxidante de extratos e microencapsulados de feijoa (Acca sellowiana)
The feijoa (Acca sellowiana) belongs to the botanical family Myrtaceae is native to South America, found especially in the Brazilian southern plateau, but is little known in Brazil. Feijoa has several important bioactive and functional compounds, such as antioxidants, vitamins, fibers and minerals....
| Autor principal: | Santos, Suelen dos |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
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Universidade Tecnológica Federal do Paraná
2020
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http://repositorio.utfpr.edu.br/jspui/handle/1/15292 |
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riut-1-152922020-11-18T19:43:58Z Atividade antioxidante de extratos e microencapsulados de feijoa (Acca sellowiana) Antioxidant activity of extracts and microencapsules of feijoa (acca sellowiana) Santos, Suelen dos Pereira, Edimir Andrade Savi, Aline Pereira, Edimir Andrade Carpes, Solange Terezinha Cunha, Mário Antônio Alves da Antioxidantes Compostos bioativos Fenóis Antioxidants Bioactive compounds Phenols CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA The feijoa (Acca sellowiana) belongs to the botanical family Myrtaceae is native to South America, found especially in the Brazilian southern plateau, but is little known in Brazil. Feijoa has several important bioactive and functional compounds, such as antioxidants, vitamins, fibers and minerals. This work aimed to microencapsulate the in natura pulp of feijoa of the cultivar Alcântara in spray dryer. To evaluate the encapsulation efficiency and the antioxidant properties of the microencapsulated extracts and the pulp of the feijoa in natura by the free radical sequestration (2,2- diphenyl-1-picryl-hydrazyl) (DPPH) methods, capture of the 2,2'- azinobis (3- ethylbenzothiazoline-6-sulfonic acid) (ABTS) and iron reducing power (FRAP). The encapsulation efficiency for the sample with the encapsulating agent maltodextrin (MD) was 96.75% and for the gum arabic (GA) sample was 95.72%. The antioxidant activity for the ABTS method showed that the microencapsulated samples had the highest values, in sample GA (2003,667 mmol TEAC g-1) (TEAC: Trolox Equivalent Antioxidant Capacity) and the sample (MD) (1548.667 mmol TEAC g-1) and hydroalcoholic (1452,000 mmol TEAC g-1) aqueous extracts (1948.667 mmol TEAC g-1) followed by acetone (1850.333 mmol TEAC g-1), aqueous (1548.667 mmol TEAC g-1) and hydroalcoholic with (1452,000 mmol TEAC g-1). The highest antioxidant activity by the DPPH method was found in the hydroalcoholic extract (32,455 mmol Trolox g-1), followed by microencapsulated samples, sample (MD) (30.636 mmol Trolox g-1) and sample 1), whereas the extracts with acetone and water had the same activity (19.879 mmol Trolox g-1). In the FRAP method, the hydroalcoholic extract also showed higher activity (66.528 mmol Fe+2 g-1) followed by microencapsulated samples, GA sample (63,408 mmol Fe+2 g-1) and MD sample (58.448 mmol Fe+2 g -1) and aqueous extracts (44,208 mmol Fe+2 g-1) and with acetone (28.088 mmol Fe+2 g -1). A feijoa (Acca sellowiana) pertence à família botânica Myrtaceae é nativa da América do Sul, encontrada em especial no planalto meridional brasileiro, no entanto é pouca conhecida no Brasil. A feijoa apresenta diversos compostos bioativos e funcionais importantes, como antioxidantes, vitaminas, fibras e minerais. Este trabalho teve como objetivo microencapsular a polpa in natura de feijoa da cultivar Alcântara em spray dryer. Avaliar a eficiência de encapsulamento e as propriedades antioxidantes dos extratos microencapsulados e da polpa da feijoa in natura pelos métodos sequestro do radical livre (2,2-difenil-1- picril-hidrazil) (DPPH), captura do radical 2,2´-azinobis (3-etilbenzotiazolina-6-ácido sulfônico) (ABTS) e poder de redução do ferro (FRAP). A eficiência de encapsulação para a amostra com o agente encapsulante maltodextrina (MD) foi de 96,75% e para a amostra com goma arábica (GA) foi 95,72%. A atividade antioxidante para o método ABTS mostrou que as amostras microencapsuladas foram as que apresentaram os maiores valores, amostra (GA) (2003,667 mmol TEAC g-1), (TEAC: Capacidade antioxidante equivalente ao Trolox) e a amostra (MD) (1948,667 mmol TEAC g-1) seguido dos extratos de acetona (1850,333 mmol TEAC g-1), aquoso (1548,667 mmol TEAC g-1) e hidroalcoólico com (1452,000 mmol TEAC g-1). A maior atividade antioxidante pelo método de DPPH foi encontrada no extrato hidroalcoólico (32,455 mmol Trolox g-1), seguido das amostras microencapsuladas, amostra (MD) (30,636 mmol Trolox g-1) e amostra (GA) (24,424 mmol Trolox g-1), já os extratos com acetona e água apresentaram a mesma atividade (19,879 mmol Trolox g-1). Pelo método FRAP o extrato hidroalcoólico também apresentou maior atividade (66,528 mmol Fe+2 g-1) seguido das amostras microencapsuladas, amostra GA (63,408 mmol Fe+2 g-1) e amostra MD (58,448 mmol Fe+2 g-1) e dos extratos aquoso (44,208 mmol Fe+2 g-1) e com acetona (28,088 mmol Fe+2 g-1). 2020-11-18T19:43:57Z 2020-11-18T19:43:57Z 2018-07-02 bachelorThesis SANTOS, Suelen dos. Atividade antioxidante de extratos e microencapsulados de feijoa (Acca sellowiana). 2018. 50 f. Trabalho de Conclusão de Curso (Graduação) - Universidade Tecnológica Federal do Paraná, Pato Branco, 2018. http://repositorio.utfpr.edu.br/jspui/handle/1/15292 por openAccess application/pdf Universidade Tecnológica Federal do Paraná Pato Branco Brasil Departamento Acadêmico de Química Química UTFPR |
| institution |
Universidade Tecnológica Federal do Paraná |
| collection |
RIUT |
| language |
Português |
| topic |
Antioxidantes Compostos bioativos Fenóis Antioxidants Bioactive compounds Phenols CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA |
| spellingShingle |
Antioxidantes Compostos bioativos Fenóis Antioxidants Bioactive compounds Phenols CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA Santos, Suelen dos Atividade antioxidante de extratos e microencapsulados de feijoa (Acca sellowiana) |
| description |
The feijoa (Acca sellowiana) belongs to the botanical family Myrtaceae is native to South America, found especially in the Brazilian southern plateau, but is little known in Brazil. Feijoa has several important bioactive and functional compounds, such as antioxidants, vitamins, fibers and minerals. This work aimed to microencapsulate the in natura pulp of feijoa of the cultivar Alcântara in spray dryer. To evaluate the encapsulation efficiency and the antioxidant properties of the microencapsulated extracts and the pulp of the feijoa in natura by the free radical sequestration (2,2- diphenyl-1-picryl-hydrazyl) (DPPH) methods, capture of the 2,2'- azinobis (3- ethylbenzothiazoline-6-sulfonic acid) (ABTS) and iron reducing power (FRAP). The encapsulation efficiency for the sample with the encapsulating agent maltodextrin (MD) was 96.75% and for the gum arabic (GA) sample was 95.72%. The antioxidant activity for the ABTS method showed that the microencapsulated samples had the highest values, in sample GA (2003,667 mmol TEAC g-1) (TEAC: Trolox Equivalent Antioxidant Capacity) and the sample (MD) (1548.667 mmol TEAC g-1) and hydroalcoholic (1452,000 mmol TEAC g-1) aqueous extracts (1948.667 mmol TEAC g-1) followed by acetone (1850.333 mmol TEAC g-1), aqueous (1548.667 mmol TEAC g-1) and hydroalcoholic with (1452,000 mmol TEAC g-1). The highest antioxidant activity by the DPPH method was found in the hydroalcoholic extract (32,455 mmol Trolox g-1), followed by microencapsulated samples, sample (MD) (30.636 mmol Trolox g-1) and sample 1), whereas the extracts with acetone and water had the same activity (19.879 mmol Trolox g-1). In the FRAP method, the hydroalcoholic extract also showed higher activity (66.528 mmol Fe+2 g-1) followed by microencapsulated samples, GA sample (63,408 mmol Fe+2 g-1) and MD sample (58.448 mmol Fe+2 g -1) and aqueous extracts (44,208 mmol Fe+2 g-1) and with acetone (28.088 mmol Fe+2 g -1). |
| format |
Trabalho de Conclusão de Curso (Graduação) |
| author |
Santos, Suelen dos |
| author_sort |
Santos, Suelen dos |
| title |
Atividade antioxidante de extratos e microencapsulados de feijoa (Acca sellowiana) |
| title_short |
Atividade antioxidante de extratos e microencapsulados de feijoa (Acca sellowiana) |
| title_full |
Atividade antioxidante de extratos e microencapsulados de feijoa (Acca sellowiana) |
| title_fullStr |
Atividade antioxidante de extratos e microencapsulados de feijoa (Acca sellowiana) |
| title_full_unstemmed |
Atividade antioxidante de extratos e microencapsulados de feijoa (Acca sellowiana) |
| title_sort |
atividade antioxidante de extratos e microencapsulados de feijoa (acca sellowiana) |
| publisher |
Universidade Tecnológica Federal do Paraná |
| publishDate |
2020 |
| citation |
SANTOS, Suelen dos. Atividade antioxidante de extratos e microencapsulados de feijoa (Acca sellowiana). 2018. 50 f. Trabalho de Conclusão de Curso (Graduação) - Universidade Tecnológica Federal do Paraná, Pato Branco, 2018. |
| url |
http://repositorio.utfpr.edu.br/jspui/handle/1/15292 |
| _version_ |
1805312434464882688 |
| score |
10,814766 |