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Major phenolic acids and total antioxidant activity in Mamaki leaves, Pipturus albidus.
J Food Sci. 2007 Nov; 72(9):S696-701.JF

Abstract

Three phenolic acids, (+)catechins, chlorogenic acid, and rutin, were identified and quantified in Mamaki leaves using a liquid chromatograph-mass spectrometer technique. Concentrations of (+)catechins, chlorogenic acid, and rutin varied from 1.1 to 5.0 mg/g of Mamaki leaves as determined in the extract using 0.5% acetic acid in 90% aqueous methanol. This study also quantified total antioxidant capacity using the photochemiluminescence method, which was expressed in equivalents to ascorbic acid (AA). Mamaki teas brewed for 30 min contained total antioxidant activity (TAA) between 238 and 259 mg AA/g of tea. Mamaki teas brewed for 1 h and stored at 4 h, 1 d, and 3 d at 4 degrees C had available TAA 293, 271, 172, and 163 mg AA/g of tea leaves, respectively. The concentrations of (+)catechins and rutin in Mamaki leaves are compared to other types of popular teas. Mamaki teas contained relatively low amounts of TAA compared to green teas and Lipton teas.

Authors+Show Affiliations

Dept. of Human Nutrition, Food, and Animal Science, Univ. of Hawaii at Manoa, 1955 East West Road, Honolulu, HI 96822, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18034755

Citation

Kartika, H, et al. "Major Phenolic Acids and Total Antioxidant Activity in Mamaki Leaves, Pipturus Albidus." Journal of Food Science, vol. 72, no. 9, 2007, pp. S696-701.
Kartika H, Li QX, Wall MM, et al. Major phenolic acids and total antioxidant activity in Mamaki leaves, Pipturus albidus. J Food Sci. 2007;72(9):S696-701.
Kartika, H., Li, Q. X., Wall, M. M., Nakamoto, S. T., & Iwaoka, W. T. (2007). Major phenolic acids and total antioxidant activity in Mamaki leaves, Pipturus albidus. Journal of Food Science, 72(9), S696-701.
Kartika H, et al. Major Phenolic Acids and Total Antioxidant Activity in Mamaki Leaves, Pipturus Albidus. J Food Sci. 2007;72(9):S696-701. PubMed PMID: 18034755.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Major phenolic acids and total antioxidant activity in Mamaki leaves, Pipturus albidus. AU - Kartika,H, AU - Li,Q X, AU - Wall,M M, AU - Nakamoto,S T, AU - Iwaoka,W T, PY - 2007/11/24/pubmed PY - 2008/3/25/medline PY - 2007/11/24/entrez SP - S696 EP - 701 JF - Journal of food science JO - J. Food Sci. VL - 72 IS - 9 N2 - Three phenolic acids, (+)catechins, chlorogenic acid, and rutin, were identified and quantified in Mamaki leaves using a liquid chromatograph-mass spectrometer technique. Concentrations of (+)catechins, chlorogenic acid, and rutin varied from 1.1 to 5.0 mg/g of Mamaki leaves as determined in the extract using 0.5% acetic acid in 90% aqueous methanol. This study also quantified total antioxidant capacity using the photochemiluminescence method, which was expressed in equivalents to ascorbic acid (AA). Mamaki teas brewed for 30 min contained total antioxidant activity (TAA) between 238 and 259 mg AA/g of tea. Mamaki teas brewed for 1 h and stored at 4 h, 1 d, and 3 d at 4 degrees C had available TAA 293, 271, 172, and 163 mg AA/g of tea leaves, respectively. The concentrations of (+)catechins and rutin in Mamaki leaves are compared to other types of popular teas. Mamaki teas contained relatively low amounts of TAA compared to green teas and Lipton teas. SN - 1750-3841 UR - https://www.unboundmedicine.com/medline/citation/18034755/Major_phenolic_acids_and_total_antioxidant_activity_in_Mamaki_leaves_Pipturus_albidus_ L2 - https://doi.org/10.1111/j.1750-3841.2007.00530.x DB - PRIME DP - Unbound Medicine ER -