- Volume 39 Issue 12
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Changes of Chemical Components of Fermented Tea during Fermentation Period
미생물을 이용한 후발효차의 발효기간별 화학성분 변화
- Kim, Yong-Shik (Dept. of Food Science and Technology, Chungju National University) ;
- Choi, Goo-Hee (Dept. of Food Science and Technology, Chungju National University) ;
- Lee, Kyung-Haeng (Dept. of Food Science and Technology, Chungju National University)
- Received : 2010.09.10
- Accepted : 2010.10.08
- Published : 2010.12.31
To manufacture the fermented tea with hygienic quality, green tea was fermented using Bacillus subtilis, Saccharomyces cerevisiae and Lactobacillus bulgaricus and chemical composition and sensory changes were evaluated during fermentation period. The lightness of the fermented samples decreased; in contrast, redness and yellowness increased. Especially, the color change of the fermented tea using B. subtilis was higher than those of control and other samples with different microorganisms during fermentation period. Chlorophyll contents were decreased by similar level regardless of fermentation treatments. The fastest decrease of total catechins contents were found in the tea fermented with B. subtilis and significantly reduced by increase of fermentation period. However, total catechin contents of the tea fermented by L. bulgaricus were not decreased. The caffeine contents of the microbial fermented teas were more decreased than that of control, even though the decrease was slight. Sensory panelists preferred the tea fermented by B. subtilis to those of control or other fermentation treatment.
Supported by : 충주대학교
- Ma SJ. 2008. Korean fermented tea research and prospect. Bosung tea symposium, Bosung, Korea. p 53-64.
- Kim SH, Park J, Lee LS, Han DS. 1999. Effect of pH on the green tea extraction. Korean J Food Sci Technol 31:1024-1028.
- Kim JT. 1996. Science and culture of green tea. Borim publisher, Paju, Korea. p 8-261.
- Jung DH, Kim JT. 2003. Science of tea. Daekwang publisher, Jeonju, Korea. p 51-53.
- Alschuler L. 1998. Green tea: Healing tonic. Am J Nat Med 5: 28-31.
- Dullo AG, Duret C, Rohrer D. 1999. Efficacy of a green tea extract rich in catechin polyphenols and caffeine in increasing 24-h energy expenditure and fat oxidation and fat oxidation in humans. Am J Clin Nutr 70: 1040-1045. https://doi.org/10.1093/ajcn/70.6.1040
- Beltz LA, Bayer DK, Moss AL, Simet IM. 2006. Mechanisms of cancer prevention by green and black tea polyphenols. Anticancer Agents Med Chem 389-406: 389-406. https://doi.org/10.2174/187152006778226468
- Son GM, Bae SM, Jung JY, Sin DJ, Sung TS. 2005. Antioxidative effect on the green tea and puer tea extracts. Korean J Food & Nutr 18: 219-224.
- Choi OJ, Choi KH. 2003. The physicochemical properties of Korean wild teas (green tea, semi-fermented tea, and black tea) according to degree of fermentation. J Korean Soc Food Sci Nutr 32: 356-362. https://doi.org/10.3746/jkfn.2003.32.3.356
- KFDA. 2007. Study of the safety evaluation for fermentation tea. Korea Food & Drug Administration, Seoul, Korea.
- Son SG, Je SM, Woo SY, Byun KO, Kang YJ, Kwang BS. 2006. Physiological differences of Ilex rotunda and Illicium anisatum under low light intensities. Korean J Agric Forest Meteorol 8: 61-67.
- Chun JU, Choi KS. 2007. Nondestructive and rapid method for measurement of catechin contents in green tea products using NIRS. J Korean Tea Soc 13: 99-112.
- KFDA. 2005. Analysis method of food additive. Korea Food & Drug Administration, Seoul, Korea.
- Shin KH. 2002. A study on the change of chemical composition and the effect of antibacterial activity by the degree fermentation in Korean tea. MS Thesis. Sunchon NationalUniversity, Jeonnam, Korea.
- Jo KH, Pae YR, Yang EN, Park EJ, Ma SJ, Park YS, Chung DO, Jung ST. 2006. Major constituents and bioactivities of tea products by various manufacturing. Korean J Food Preserv 13: 596-602.
- Park JH, Choi HK, Park KH. 1998. Chemical components of various green teas on market. J Korean Tea Soc 4: 83-92.
- Lin JK, Lin CL, Liang YC, Lin-Shiau SY, Juan IM. 1998. Survey of catechins, gallic acid, and methylxanthines in green, oolong, pu-erh, and black teas. J Agric Food Chem 46: 3635–3642.
- Jeong CH, Kang ST, Joo OS, Lee SC, Shin YH, Shim KH, Cho SH, Choi SG, Heo HJ. 2009. Phenolic content, antioxidant antioxidant effect and acetylcholinesterase inhibitory activity of Korean commercial green, puer, oolong and black teas. Korean J Food Preserv 16. 230-237.
- Lee YJ, Ahn MS, Hong KH. 1998. A study on the content of general compounds, amino acid, vitamins, catechins, alkaloids in green, oolong and black tea. J Fd Hyg Safety 13: 377-382.
- Liang Y, Zhang L, Lu J. 2005. A study on chemical estimation of pu-erh tea quality. J Sci Food Agric 85: 381-390. https://doi.org/10.1002/jsfa.1857
- Shin MK. 1994. The science of green tea. Korean J Food Culture 9: 433-445.
- Davis PN. 1990. Various effects of caffeine upon the body. Int Clin Nutr Rev 10: 333-339.
- Changes of Nutrient Composition and Antioxidative Activities of Fermented Tea during Fermentation vol.26, pp.3, 2013, https://doi.org/10.9799/ksfan.2013.26.3.398
- Changes of Antioxidative Components and Activity of Fermented Tea during Fermentation Period vol.40, pp.8, 2011, https://doi.org/10.3746/jkfn.2011.40.8.1073