Talk:Yerba mate/Archive 2

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Archive 1 Archive 2

Accent over the "e"

"Both the spellings "mate" and "maté" are used in English, but the latter spelling is never used in Spanish where it means "I killed" as opposed to "gourd"."

Though I understand the point the author is trying to make here, I think it's a bit misleading to state that mispronouncing it will cause an entire change of meaning. Maybe to clear things up they should mention that the word "mate" in Spanish also can mean "kill" as a formal command. But I seems to be moving off topic -my vote is that the sentence simply be removed.Viper5030 (talk) 05:31, 11 August 2012 (UTC)

I didn't realize there was a vote. I find it informative. --Walter Görlitz (talk) 06:37, 11 August 2012 (UTC)
I agree, it's informative because it explains the variance in English. I move to remove the last two "citation neededs" in that paragraph, however. We don't need to cite a dictionary to explain the meaning of a common word even when it's in another language, particularly when it's a conjugated form! It's also ridiculous to request a citation for there only being one spelling of mate (the drink) in Spanish. May as well as for a citation proving that "the" is only spelled one way in English. Frimmin (talk) 15:23, 18 April 2013 (UTC)Frimmin

Medical claims

Any claims of medical benefits from maté must be supported by reliable medical sources to the standards of WP:MEDRS. I have removed a chunk of material which made such claims but did not meet these standards. In particular, note that single primary sources are not acceptable and that in vitro effects do not equate to in vivo effects. Peter coxhead (talk) 15:44, 24 October 2012 (UTC)

Cancer Section Needs Updating

Studies have shown that it might not just be the hot water that increases cancer risk, but the PAH (polycyclic aromatic hydrocarbon) content which is very high. The cancer section needs to be changed to reflect this.



Cancer Epidemiol Biomarkers Prev. 2008 May;17(5):1262-8. doi: 10.1158/1055-9965.EPI-08-0025. High levels of carcinogenic polycyclic aromatic hydrocarbons in mate drinks. Kamangar F, Schantz MM, Abnet CC, Fagundes RB, Dawsey SM.

SOURCE: Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA. Abstract

BACKGROUND: Drinking mate has been associated with cancers of the esophagus, oropharynx, larynx, lung, kidney, and bladder. We conducted this study to determine whether drinking mate could lead to substantial exposure to polycyclic aromatic hydrocarbons (PAH), including known carcinogens, such as benzo[a]pyrene.

METHODS: The concentrations of 21 individual PAHs were measured in dry leaves of eight commercial brands of yerba mate and in infusions made with hot (80 degrees C) or cold (5 degrees C) water. Measurements were done using gas chromatography/mass spectrometry, with deuterated PAHs as the surrogates. Infusions were made by adding water to the leaves, removing the resulting infusion after 5 min, and then adding more water to the remaining leaves. This process was repeated 12 times for each infusion temperature.

RESULTS: The total concentrations of the 21 PAHs in different brands of yerba mate ranged from 536 to 2,906 ng/g dry leaves. Benzo[a]pyrene concentrations ranged from 8.03 to 53.3 ng/g dry leaves. For the mate infusions prepared using hot water and brand 1, 37% (1,092 of 2,906 ng) of the total measured PAHs and 50% (25.1 of 50 ng) of the benzo[a]pyrene content were released into the 12 infusions. Similar results were obtained for other hot and cold infusions.

CONCLUSION: Very high concentrations of carcinogenic PAHs were found in yerba mate leaves and in hot and cold mate infusions. Our results support the hypothesis that the carcinogenicity of mate may be related to its PAH content. (talk) 17:30, 19 May 2013 (UTC)

Looks like a solid reference. Feel free to update. Walter Görlitz (talk) 22:09, 19 May 2013 (UTC)

Given that Theophylline has been observed to have a relaxation effect on smooth muscle and that little to no Theophylline has been found in Yerba Mate, how can it be claimed that the three xanthines have an effect effect on smooth muscle especially when caffeine and theobrimine have no smooth muscle relaxation effect? — Preceding unsigned comment added by (talk) 18:23, 12 July 2013 (UTC)