Roasted barley tea
|This article needs additional citations for verification. (July 2008)|
Roasted barley tea is a caffeine-free, roasted-grain-based infusion made from barley, which is popular in Korean, Chinese, and Japanese cuisine. It is also used as a caffeine-free coffee substitute in American cuisine. Barley water is a popular traditional soft drink in Britain.
Roasted barley tea is called mugicha (麦茶?) in Japanese, dàmàichá (大麦茶) or màichá (麦茶 or 麥茶) in Mandarin Chinese, and boricha (보리차) in Korean. While the tea is generally regarded as a cooling beverage in Japan, it is served year-round, mild in summer and cool in winter, in Korea and China. Originally, roasted barley seeds were stewed in warm water (this is still the method generally used in Korea), but tea bags containing ground barley became more popular during the early 1980s; this is now the norm in Japan. It can be found from many different distributors in vending machines all over Japan.
In Korea, roasted unhulled barley is used to prepare the tea. Often the barley is combined with oksusu cha (roasted corn), as the corn's sweetness offsets the slightly bitter flavor of the barley. A similar drink, made from roasted brown rice, is called hyeonmi cha.
Roasted barley tea was found to inhibit bacterial colonization and adhesion, specifically with respect to the major cause of tooth decay also implicated in cardiovascular diseases, Streptococcus mutans biofilms. It also lowers blood viscosity, proportional to the level of alkylpyrazine in the tea. However, the roasting process revealed 200-600 micrograms/kg of acrylamide among Japanese mugicha. Acrylamide and its metabolite, glycidamide, react readily with a number of biomolecules including haemoglobin.
- Maier, H. G. (1987). "Coffee Substitutes Made from Cereals". In Clarke, R.J.; Macrae, R. Coffee: Related Beverages. pp. 5–8. ISBN 978-1-85166-103-9.
- Stauder, Monica; Papetti, Adele; Daglia, Maria; Vezzulli, Luigi; Gazzani, Gabriella; Varaldo, Pietro E.; Pruzzo, Carla (2010). "Inhibitory Activity by Barley Coffee Components Towards Streptococcus Mutans Biofilm". Current Microbiology 61 (5): 417. doi:10.1007/s00284-010-9630-5. PMID 20361189.
- Suganuma, Hiroyuki; Inakuma, Takahiro; Kikuchi, Yuji (2002). "Amelioratory Effect of Barley Tea Drinking on Blood Fluidity". Journal of Nutritional Science and Vitaminology 48 (2): 165. doi:10.3177/jnsv.48.165. PMID 12171439.
- Ono, H.; Chuda, Y.; Ohnishi-Kameyama, M.; Yada, H.; Ishizaka, M.; Kobayashi, H.; Yoshida, M. (2003). "Analysis of acrylamide by LC-MS/MS and GC-MS in processed Japanese foods". Food Additives and Contaminants 20 (3): 215. doi:10.1080/0265203021000060887. PMID 12623644.
- Health Implications of Acrylamide in Food. World Health Organization. 2002. ISBN 92-4-156218-8.[page needed]