Antioxidant activity of herbal tea prepared from Cosmos caudatus leaves at different maturity stages

Dian-Nashiela F., . and Noriham A., . and Nooraain H., . and Azizah A. H., . Antioxidant activity of herbal tea prepared from Cosmos caudatus leaves at different maturity stages. pp. 1189-1194. ISSN 22317546

Herbal tea is widely consumed around the world because people believed that it contained high amount of antioxidant. However usage of different maturity of the plants as raw materials could affect the antioxidant capacities in herbal tea. Hence this paper reports the antioxidant activity of herbal tea prepared from Cosmos caudatus at different maturity namely young mature and old leaves. The analyses carried out were total phenolic content (TPC) total flavonoid content (TFC) ferric reducing antioxidant power (FRAP) and DPPH (2-2-diphenyl-1-picrylhydrazyl) radical scavenging assays. Based on the results obtained herbal tea prepared from young leaves had significantly strong (p0.05) antioxidant activity for all assays tested than herbal tea prepared from mature and old leaves. In fact TPC and TFC exhibited a strong positively correlation with reducing power but inversely correlated with DPPH scavenging activity indicating that these compounds are major contributors to the antioxidant activity. Thus this shows that antioxidant activity in C. caudatus leaves reduced with increase maturity and hence it is recommended to use young leaves for herbal tea preparation since it possessed good antioxidant activity which benefits human health.

Full text available from: Official URL: http://ifrj.upm.edu.my/22%20(03)%202015/(43).pdf

Abstract

Herbal tea is widely consumed around the world because people believed that it contained high amount of antioxidant. However usage of different maturity of the plants as raw materials could affect the antioxidant capacities in herbal tea. Hence this paper reports the antioxidant activity of herbal tea prepared from Cosmos caudatus at different maturity namely young mature and old leaves. The analyses carried out were total phenolic content (TPC) total flavonoid content (TFC) ferric reducing antioxidant power (FRAP) and DPPH (2-2-diphenyl-1-picrylhydrazyl) radical scavenging assays. Based on the results obtained herbal tea prepared from young leaves had significantly strong (p0.05) antioxidant activity for all assays tested than herbal tea prepared from mature and old leaves. In fact TPC and TFC exhibited a strong positively correlation with reducing power but inversely correlated with DPPH scavenging activity indicating that these compounds are major contributors to the antioxidant activity. Thus this shows that antioxidant activity in C. caudatus leaves reduced with increase maturity and hence it is recommended to use young leaves for herbal tea preparation since it possessed good antioxidant activity which benefits human health.

[error in script]

Item Type:	Article
AGROVOC Term:	Cosmos
AGROVOC Term:	Maturity
AGROVOC Term:	Antioxidants
AGROVOC Term:	Herbal teas
AGROVOC Term:	Leaves
AGROVOC Term:	Phenolic content
AGROVOC Term:	Flavonoids
AGROVOC Term:	Free radicals
AGROVOC Term:	Mills
AGROVOC Term:	Boiling
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	26 Apr 2025 16:38
URI:	http://webagris.upm.edu.my/id/eprint/22102

Actions (login required)

View Item