BACKGROUND: Extracts of fresh wine grape seeds/skin or of grape pomace seeds were used to prepare antioxidant naturaltoothpastes.RESULTS: Ethanol extracted twice more polyphenols than water; ultrasound did not provide any improvement in the extraction.The addition of freeze-dried ethanol extracts of seeds or skin, at 2% and 10%, to the commercial toothpaste signicantlyincreased the polyphenol content, both from white grape seeds and skin and from red grape seed pomace. The evaluationof time stability (shelf life) revealed a decrease, after 4 months, of 3.9% and 9.4% in total polyphenol content, in 5% and10% water extracts, but not for ethanol extracts. 1,1-Diphenyl-2-picrilhydrazil1antiradical activity was the highest in 10% ofseed water extract toothpaste and, after 4 months, the activity was stable.CONCLUSION: Ethanol and water are efcient and safe solvents to create natural toothpaste with grape or pomace seed extractwith antioxidant activity
Use of water and ethanol extracts from wine grape seed pomace to prepare an antioxidant toothpaste
Fabio Mencarelli
2021-01-01
Abstract
BACKGROUND: Extracts of fresh wine grape seeds/skin or of grape pomace seeds were used to prepare antioxidant naturaltoothpastes.RESULTS: Ethanol extracted twice more polyphenols than water; ultrasound did not provide any improvement in the extraction.The addition of freeze-dried ethanol extracts of seeds or skin, at 2% and 10%, to the commercial toothpaste signicantlyincreased the polyphenol content, both from white grape seeds and skin and from red grape seed pomace. The evaluationof time stability (shelf life) revealed a decrease, after 4 months, of 3.9% and 9.4% in total polyphenol content, in 5% and10% water extracts, but not for ethanol extracts. 1,1-Diphenyl-2-picrilhydrazil1antiradical activity was the highest in 10% ofseed water extract toothpaste and, after 4 months, the activity was stable.CONCLUSION: Ethanol and water are efcient and safe solvents to create natural toothpaste with grape or pomace seed extractwith antioxidant activityI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
