Publicação
Response surface methodology applied to ultrasound-assisted extraction of raspberry and blueberry pruning residues
| Resumo: | Due to their high nutritional value, berries production has increased, but this inevitably leads to the accumulation of bioresidues. To prevent this, leaves and other aerial components of berry plants can be converted into valuable ingredients for cosmetics applications due to their unique chemical composition and functional properties. Ultrasound-assisted extraction methodology is an efficient technique to obtain these potentially bioactive extracts. The objective of this study was to investigate the optimal conditions to maximize the yield of ultrasound-assisted extractions of pruning residues of Rubus idaeus L. (raspberry) and Vaccinium myrtillus L. (blueberry) using response surface methodology (RSM). Three factors were used in the analysis: solvent ranging from 0% to 100% ethanol:water, time ranging from 5 to 30 minutes and extractive power from 20% to 100% (maximum of 500W). The Box Behnken design was used, relying on 17 individual randomized runs. The response to optimize was the dry weight of the extract (YRB and YBB), which ranged from 22.2 to 202.8 and 123.5 to 394.0 mg/g, respectively. The optimization performed by RSM indicated the optimal extractive point as a function of dry weight at 32.9% of ethanol:water, 15.2 min and 95.7% of extractive power for raspberry; and 63.6% of ethanol:water, 29.5 min, and 72.2% of extractive power regarding blueberry extract. Hydrolyzable tannins were the major phenolic compounds found in raspberry extract, while blueberry extracts showed a higher presence in flavonoids. These results showed that the pruning residue extracts could have a potential application in the cosmetic industry. |
|---|---|
| Autores principais: | Plasencia, Paula |
| Outros Autores: | Carocho, Márcio; Heleno, Sandrina A.; Finimundy, Tiane C.; Barreiro, M.F.; García, Pablo A.; Barros, Lillian |
| Assunto: | Agri-food byproducts Phenolic compounds RSM |
| Ano: | 2024 |
| País: | Portugal |
| Tipo de documento: | documento de conferência |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Instituto Politécnico de Bragança |
| Idioma: | inglês |
| Origem: | Biblioteca Digital do IPB |
| Resumo: | Due to their high nutritional value, berries production has increased, but this inevitably leads to the accumulation of bioresidues. To prevent this, leaves and other aerial components of berry plants can be converted into valuable ingredients for cosmetics applications due to their unique chemical composition and functional properties. Ultrasound-assisted extraction methodology is an efficient technique to obtain these potentially bioactive extracts. The objective of this study was to investigate the optimal conditions to maximize the yield of ultrasound-assisted extractions of pruning residues of Rubus idaeus L. (raspberry) and Vaccinium myrtillus L. (blueberry) using response surface methodology (RSM). Three factors were used in the analysis: solvent ranging from 0% to 100% ethanol:water, time ranging from 5 to 30 minutes and extractive power from 20% to 100% (maximum of 500W). The Box Behnken design was used, relying on 17 individual randomized runs. The response to optimize was the dry weight of the extract (YRB and YBB), which ranged from 22.2 to 202.8 and 123.5 to 394.0 mg/g, respectively. The optimization performed by RSM indicated the optimal extractive point as a function of dry weight at 32.9% of ethanol:water, 15.2 min and 95.7% of extractive power for raspberry; and 63.6% of ethanol:water, 29.5 min, and 72.2% of extractive power regarding blueberry extract. Hydrolyzable tannins were the major phenolic compounds found in raspberry extract, while blueberry extracts showed a higher presence in flavonoids. These results showed that the pruning residue extracts could have a potential application in the cosmetic industry. |
|---|