Effect of Drum-Drying Conditions on the Content of Bioactive Compounds of Broccoli Pulp
This work studied the effect of drum-rotation frequency, drum temperature, and water-to-pulp ratio in a double-drum drier on the content of sulforaphane, glucoraphanin, total phenolic compounds, ascorbic acid, and antioxidant activity of broccoli pulp through a multilevel factorial design with one r...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-09-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/9/9/1224 |
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| author | Constanza Córdova Juan P. Vivanco Julián Quintero Andrea Mahn |
| author_facet | Constanza Córdova Juan P. Vivanco Julián Quintero Andrea Mahn |
| author_sort | Constanza Córdova |
| collection | DOAJ |
| description | This work studied the effect of drum-rotation frequency, drum temperature, and water-to-pulp ratio in a double-drum drier on the content of sulforaphane, glucoraphanin, total phenolic compounds, ascorbic acid, and antioxidant activity of broccoli pulp through a multilevel factorial design with one replicate. Drum-drying conditions did not significantly affect sulforaphane content, unlike glucoraphanin, however the poor adherence of broccoli pulp resulted in a final product with undefined shape and heterogeneous color. On the other hand, antioxidant activity was unevenly affected by drying conditions; however, drum-rotation frequency affected it in the same way that phenolic compounds and ascorbic acid, showing a concordant behavior. The ascorbic acid content decreased significantly after drying, and it was highly dependent on the experimental factors, resulting in a regression model that explained 90% of its variability. Drum-rotation frequency of 5 Hz, drum temperature of 125 °C, and water-to-pulp ratio of 0.25 resulted in an apparent increase of sulforaphane and phenolic compounds content of 13.7% and 47.6%, respectively. Drum drying has great potential to fabricate dehydrated broccoli-based foods with functional properties. Besides, since drum drying has low investment and operation costs, it represents a very attractive option for the industrialization of broccoli derivatives. |
| first_indexed | 2024-03-10T16:37:11Z |
| format | Article |
| id | doaj.art-c6ace066bea44bcb8b6db123d14788ec |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T16:37:11Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-c6ace066bea44bcb8b6db123d14788ec2023-11-20T12:20:57ZengMDPI AGFoods2304-81582020-09-0199122410.3390/foods9091224Effect of Drum-Drying Conditions on the Content of Bioactive Compounds of Broccoli PulpConstanza Córdova0Juan P. Vivanco1Julián Quintero2Andrea Mahn3Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Santiago de Chile, Avenida Libertador Bernardo O’Higgins 3363, Estación Central, Santiago 9170019, ChileCentro de Investigación y Tendencias (CIyT), Área de Innovación y Desarrollo, Alfa Chilena Alimentos, Av. Las Américas 700, Cerrillos, Santiago 9230102, ChileDepartamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Santiago de Chile, Avenida Libertador Bernardo O’Higgins 3363, Estación Central, Santiago 9170019, ChileDepartamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Santiago de Chile, Avenida Libertador Bernardo O’Higgins 3363, Estación Central, Santiago 9170019, ChileThis work studied the effect of drum-rotation frequency, drum temperature, and water-to-pulp ratio in a double-drum drier on the content of sulforaphane, glucoraphanin, total phenolic compounds, ascorbic acid, and antioxidant activity of broccoli pulp through a multilevel factorial design with one replicate. Drum-drying conditions did not significantly affect sulforaphane content, unlike glucoraphanin, however the poor adherence of broccoli pulp resulted in a final product with undefined shape and heterogeneous color. On the other hand, antioxidant activity was unevenly affected by drying conditions; however, drum-rotation frequency affected it in the same way that phenolic compounds and ascorbic acid, showing a concordant behavior. The ascorbic acid content decreased significantly after drying, and it was highly dependent on the experimental factors, resulting in a regression model that explained 90% of its variability. Drum-rotation frequency of 5 Hz, drum temperature of 125 °C, and water-to-pulp ratio of 0.25 resulted in an apparent increase of sulforaphane and phenolic compounds content of 13.7% and 47.6%, respectively. Drum drying has great potential to fabricate dehydrated broccoli-based foods with functional properties. Besides, since drum drying has low investment and operation costs, it represents a very attractive option for the industrialization of broccoli derivatives.https://www.mdpi.com/2304-8158/9/9/1224double-drum dryersulforaphanephenolic compoundsascorbic acidantioxidant activity |
| spellingShingle | Constanza Córdova Juan P. Vivanco Julián Quintero Andrea Mahn Effect of Drum-Drying Conditions on the Content of Bioactive Compounds of Broccoli Pulp Foods double-drum dryer sulforaphane phenolic compounds ascorbic acid antioxidant activity |
| title | Effect of Drum-Drying Conditions on the Content of Bioactive Compounds of Broccoli Pulp |
| title_full | Effect of Drum-Drying Conditions on the Content of Bioactive Compounds of Broccoli Pulp |
| title_fullStr | Effect of Drum-Drying Conditions on the Content of Bioactive Compounds of Broccoli Pulp |
| title_full_unstemmed | Effect of Drum-Drying Conditions on the Content of Bioactive Compounds of Broccoli Pulp |
| title_short | Effect of Drum-Drying Conditions on the Content of Bioactive Compounds of Broccoli Pulp |
| title_sort | effect of drum drying conditions on the content of bioactive compounds of broccoli pulp |
| topic | double-drum dryer sulforaphane phenolic compounds ascorbic acid antioxidant activity |
| url | https://www.mdpi.com/2304-8158/9/9/1224 |
| work_keys_str_mv | AT constanzacordova effectofdrumdryingconditionsonthecontentofbioactivecompoundsofbroccolipulp AT juanpvivanco effectofdrumdryingconditionsonthecontentofbioactivecompoundsofbroccolipulp AT julianquintero effectofdrumdryingconditionsonthecontentofbioactivecompoundsofbroccolipulp AT andreamahn effectofdrumdryingconditionsonthecontentofbioactivecompoundsofbroccolipulp |