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Effect of growing and drying conditions on the phenolic composition of mate teas (Ilex paraguariensis).
J Agric Food Chem. 2008 Sep 24; 56(18):8394-403.JA

Abstract

Mate tea (Ilex paraguariensis) has been used for centuries and is widely consumed in Brazil, Argentina, Paraguay, and Uruguay. The aim of the present study was to determine how growing and drying conditions affect the phenolic concentration and antioxidant capacity of 15 Mate teas from forest or plantation cultivations, dried either with hot air or wood smoke. The total polyphenol concentration determined with Folin-Ciocalteu ranged from 100.3 +/- 5.5 to 179.7 +/- 3.6 mg equiv chlorogenic acid/g dry leaves. The antioxidant capacity according to the oxygen radical absorbance capacity assay ranged from 1.5 +/- 0.3 to 4.1 +/- 0.1 mmol Trolox equiv/g dry leaves. Ten phenolic compounds were identified and correlated with antioxidant capacity (R (2) = 0.80). Principle component analysis and multivariate linear regression were conducted to assess the effect of growing and drying conditions. Sun-exposed (plantation grown) Mate teas exhibited higher levels of all polyphenols as compared to shaded (forest grown) Mate teas (P < 0.05). Lower rainfall, temperature, and drying conditions had varying effects on the phenolics. On average, plantation grown Mate teas had a greater concentration of phenolics than forest grown teas. Thus, plantation grown Mate teas represent better potential sources for their commercial extraction.

Authors+Show Affiliations

Department of Food Science and Human Nutrition, University of Illinois, 228 ERML, MC-051, 1202 West Gregory Drive, UrbanaChampaign, Illinois 61801, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18759444

Citation

Heck, Caleb I., et al. "Effect of Growing and Drying Conditions On the Phenolic Composition of Mate Teas (Ilex Paraguariensis)." Journal of Agricultural and Food Chemistry, vol. 56, no. 18, 2008, pp. 8394-403.
Heck CI, Schmalko M, Gonzalez de Mejia E. Effect of growing and drying conditions on the phenolic composition of mate teas (Ilex paraguariensis). J Agric Food Chem. 2008;56(18):8394-403.
Heck, C. I., Schmalko, M., & Gonzalez de Mejia, E. (2008). Effect of growing and drying conditions on the phenolic composition of mate teas (Ilex paraguariensis). Journal of Agricultural and Food Chemistry, 56(18), 8394-403. https://doi.org/10.1021/jf801748s
Heck CI, Schmalko M, Gonzalez de Mejia E. Effect of Growing and Drying Conditions On the Phenolic Composition of Mate Teas (Ilex Paraguariensis). J Agric Food Chem. 2008 Sep 24;56(18):8394-403. PubMed PMID: 18759444.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of growing and drying conditions on the phenolic composition of mate teas (Ilex paraguariensis). AU - Heck,Caleb I, AU - Schmalko,Miguel, AU - Gonzalez de Mejia,Elvira, Y1 - 2008/08/30/ PY - 2008/9/2/pubmed PY - 2008/11/11/medline PY - 2008/9/2/entrez SP - 8394 EP - 403 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 56 IS - 18 N2 - Mate tea (Ilex paraguariensis) has been used for centuries and is widely consumed in Brazil, Argentina, Paraguay, and Uruguay. The aim of the present study was to determine how growing and drying conditions affect the phenolic concentration and antioxidant capacity of 15 Mate teas from forest or plantation cultivations, dried either with hot air or wood smoke. The total polyphenol concentration determined with Folin-Ciocalteu ranged from 100.3 +/- 5.5 to 179.7 +/- 3.6 mg equiv chlorogenic acid/g dry leaves. The antioxidant capacity according to the oxygen radical absorbance capacity assay ranged from 1.5 +/- 0.3 to 4.1 +/- 0.1 mmol Trolox equiv/g dry leaves. Ten phenolic compounds were identified and correlated with antioxidant capacity (R (2) = 0.80). Principle component analysis and multivariate linear regression were conducted to assess the effect of growing and drying conditions. Sun-exposed (plantation grown) Mate teas exhibited higher levels of all polyphenols as compared to shaded (forest grown) Mate teas (P < 0.05). Lower rainfall, temperature, and drying conditions had varying effects on the phenolics. On average, plantation grown Mate teas had a greater concentration of phenolics than forest grown teas. Thus, plantation grown Mate teas represent better potential sources for their commercial extraction. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/18759444/Effect_of_growing_and_drying_conditions_on_the_phenolic_composition_of_mate_teas__Ilex_paraguariensis__ L2 - https://doi.org/10.1021/jf801748s DB - PRIME DP - Unbound Medicine ER -