Effect of drying method and extraction solvent on the total phenolics and antioxidant activity of cauliflower (Brassica oleracea L.) extracts

Mehmood T, . and Kalsoom U, . and Anwar F, . and Sultana B, . and Mushtaq M, . and Arshad H.A, . Effect of drying method and extraction solvent on the total phenolics and antioxidant activity of cauliflower (Brassica oleracea L.) extracts. pp. 653-659. ISSN 22317546

Plants being a rich source of medicinally important compounds such as antioxidants have chemo-preventive role against the risk of oxidative stress-related diseases. There has been much interest in fruits and vegetable rich diets as a natural source of antioxidants and functional ingredients. As well as targeting plants high in antioxidant activity it is also important to optimize extraction parameters. Four extracting solvents methanol ethanol aqueous methanol (80 v/v) and aqueous ethanol (80 v/v) were evaluated for their efficacy to extract antioxidants from cauliflower that had undergone different drying processes namely air-drying sun-drying and oven-drying. There was a significant difference (P 0.05) in the extracting ability of each of the solvents. The aqueous solvents were superior in their ability to extract the antioxidants and aqueous methanol was significantly more efficient than aqueous ethanol. This result was consistent across a number of parameters including extraction yield total phenolic content and antioxidant activity. Furthermore the samples drying process prior to extraction also significantly influenced (P 0.05) the extraction yield. Oven dried (40 oC) cauliflower had the highest yield of extractable antioxidants while air dried (ambient approx 25 oC) had the lowest. Again there was excellent correlation between extraction yield antioxidant activity and total phenolic content.

Full text available from: Official URL: http://ifrj.upm.edu.my/20%20(02)%202013/22%20IFRJ%...

Abstract

Plants being a rich source of medicinally important compounds such as antioxidants have chemo-preventive role against the risk of oxidative stress-related diseases. There has been much interest in fruits and vegetable rich diets as a natural source of antioxidants and functional ingredients. As well as targeting plants high in antioxidant activity it is also important to optimize extraction parameters. Four extracting solvents methanol ethanol aqueous methanol (80 v/v) and aqueous ethanol (80 v/v) were evaluated for their efficacy to extract antioxidants from cauliflower that had undergone different drying processes namely air-drying sun-drying and oven-drying. There was a significant difference (P 0.05) in the extracting ability of each of the solvents. The aqueous solvents were superior in their ability to extract the antioxidants and aqueous methanol was significantly more efficient than aqueous ethanol. This result was consistent across a number of parameters including extraction yield total phenolic content and antioxidant activity. Furthermore the samples drying process prior to extraction also significantly influenced (P 0.05) the extraction yield. Oven dried (40 oC) cauliflower had the highest yield of extractable antioxidants while air dried (ambient approx 25 oC) had the lowest. Again there was excellent correlation between extraction yield antioxidant activity and total phenolic content.

[error in script]

Item Type:	Article
AGROVOC Term:	Extraction
AGROVOC Term:	Drying
AGROVOC Term:	Antioxidants
AGROVOC Term:	Phenols
AGROVOC Term:	Linoleic acid
AGROVOC Term:	Cauliflowers
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/21780

Actions (login required)

View Item