Journals / Türk Biyokimya Dergisi / 2013 / Cilt: 38 - Sayı: 1

Demleme kaplarının siyah çay demlerindeki mineral içeriğine etkisi

Influence of brewing pots on mineral content of black tea İY infusions

Pages
57–62
Publication Date
2022-11-05
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

This is especially important in order to regulate the tea consumption of patients in illnesses where there should be restrictions on some mineral consumption.

📌 3 Key Takeaways

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Objective & Hypothesis:Purpose: The objective of this study is to analyze the minerals of different black tea infusions brewed in different pots.
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Key Findings & Data:Six mineral contents (Fe, Cu, Mn, Zn, Na and K) obtained by duplicate analysis of 64 samples (8 different samples – 4 pots – 2 infusions each) that were brewed two times under the same conditions in different pots (stainless steel, aluminum, porcelain and glass) were analysed.
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Conclusion & Impact:This is especially important in order to regulate the tea consumption of patients in illnesses where there should be restrictions on some mineral consumption.
🔬Design:Research Article
📍Scope:64 samples
⚙️Variables:Domain Parameters

Abstract

Purpose: The objective of this study is to analyze the minerals of different black tea infusions brewed in different pots. Material and Methods: Eight different samples of black tea were used in this study. Six mineral contents (Fe, Cu, Mn, Zn, Na and K) obtained by duplicate analysis of 64 samples (8 different samples – 4 pots – 2 infusions each) that were brewed two times under the same conditions in different pots (stainless steel, aluminum, porcelain and glass) were analysed. Fe, Cu, Mn and Zn contents in infusions were determined by atomic absorption spectrometer; Na and K contents were determined by flame photometer. The differences in mineral contents of infusions brewed in different pots were analyzed by analysis of variance (F-test) for randomized block design. Results: Fe, Mn, Zn and Na contents of infusions were found to be significantly different whereas no statistically significant differences were observed in Cu and K contents between brewing pots. The highest amount of mineral found in infusions was K. Fe contents were found to be similar in infusions brewed in stainless steel and glass pots which is less than the tea brewed in aluminum and porcelain pots. There was no significant difference in the Zn content of infusions brewed in aluminum and porcelain pots, however these were significantly higher than those in stainless steel and glass pots. The Mn content of tea brewed in glass pot was significantly lower as compared to the other three pots. The Na content was found highest in tea brewed in porcelain pot, and lowest in glass pot. Conclusion: Tea is an important source of some minerals especially for K. The mineral content of tea may differ according to the pot in which it is brewed. This is especially important in order to regulate the tea consumption of patients in illnesses where there should be restrictions on some mineral consumption.

Özet

Amaç: Bu çalışma, farklı kaplarda demlenmiş farklı çay örneklerinin mineral içeriklerini belirlenmek amacıyla yürütülmüştür. Gereç ve Yöntemler: Araştırmada 8 farklı tür siyah çay örneği kullanılmıştır. Her çayın, aynı koşullar altında, 4 farklı demlikte (paslanmaz çelik, aluminyum, porselen ve cam) iki- şer kez demlenmesiyle elde edilen 64 örneğin 6 mineral içeriği (Fe, Cu, Mn, Zn, Na ve K) ikili olarak analiz edilmiştir. Demlerdeki Fe, Cu, Mn ve Zn miktarları; atomik absorpsiyon spektrometresi, Na ve K miktarları ise; flame fotometre ile belirlenmiştir. Çay demlerindeki mineral miktarlarının demleme kapları arasındaki farkları; rasgele blok düzeni için varyans analizi yöntemi ile araştırılmıştır. Bulgular: Paslanmaz çelik, aluminyum, porselen ve cam olmak üzere 4 farklı kapta demlenen çayların Fe, Mn, Zn ve Na miktarları arasındaki farkların istatistiksel olarak önemli, Cu ve K miktarları arasındaki farkların ise önemsiz olduğu belirlenmiştir. Demlerde en yüksek miktarda bulunan mineral K'dur. Paslanmaz çelik ve cam kaplarda demlenen çayların Fe miktarları benzer olup diğer iki kapta (alüminyum ve porselen) demlenen çaylardakinden daha düşüktür. Buna karşılık alüminyum ve porselen kaplarda demlenen çayların Zn miktarları benzerdir ve diğer iki kapta (paslanmaz çelik ve cam kap) demlenenlerden önemli düzeyde yüksektir. Mn miktarı; cam kapta demlenen çaylarda, diğer 3 kapta demlenenlerden daha düşük bulunmuştur. Na; porselen kapta demlenen çayda en yüksek, cam kapta demlenen çayda ise en düşük miktardadır. Sonuçlar: Siyah çay, başta potasyum olmak üzere bazı mineraller açısından zengin bir içecektir. Çayın demlendiği kaba göre bileşimindeki mineral içeriği değişebilmektedir. Bu de- ğişikliklerin bilinmesi; özellikle bazı minerallerin sınırlanması gereken hastalıklarda, çay tüketim miktarlarının düzenlenmesi açısından önemlidir.

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Cite This Article

TAYFUR, M., KARAAĞAOĞLU, N., BASOGLU, S., MERCANLIGİL, S. M. (2022). Demleme kaplarının siyah çay demlerindeki mineral içeriğine etkisi. Türk Biyokimya Dergisi, Cilt: 38 - Sayı: 1, 57–62. https://ajindex.com/articles/621242

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References (14)

  1. Tufekci M, Guner S. The determination of optimum fermenta- tion time in Turkish black tea manufacture. Food Chem 1997; 60:53-56.
  2. Hakim IA, Weisgerber UM, Harris RB, Balentine D, van-Mierlo CAJ, Paetau-Robinson I. Preparation, composition and con- sumption patterns of tea-based beverages in Arizona. Nutr Res 2000; 20:1715-1724.
  3. Yao L, Liu X, Jiang Y, Caffin N, D’Arcy B, Singanusong R, Dat- ta N, Xu Y. Compositional analysis of teas from Australian su- permarkets. Food Chem 2006; 94: 115-122.
  4. Mierzwa J, Sun YC, Chung YT, Yang MH. Comparative de- termination of Ba, Cu, Fe, Pb and Zn in tea leaves by slurry sampling electrothermal atomic absorption and liquid sampling inductively coupled plasma atomic emission spectrometry. Ta- lanta 1998; 47:1263-1270.
  5. Besra SE, Gomes A, Ganguly DK, Vedasiromoni JR. Antidiarr- hoeal activity of hot water extract of black tea (Camellia sinen- sis). Phytother Res 2003; 17: 380-384. Weisburger JH. Tea and health: A historical perspective. Can Lett 1997; 114: 315-317.
  6. Ismail M, Manickam E, Danial AM, Rahmat A, Yahaya A. Che- mical composition and antioxidant activity of Strobilanthes cris- pus leaf extract. J Nutr Biochem 2000; 11: 536-542.
  7. Marcos A, Fisher A, Rea G, Hill S. Preliminary study using tra- ce element concentrations and a chemometrics approach to de- termine the geographical origin of tea. J Anal Atom Spect 1998; 13: 521-525.
  8. Peterson J, Dwyer J, Jacques P, Rand W, Prior R, Chui K. Tea variety and brewing techniques influence flavonoid content of black tea. J Food Compos Anal 2004; 17(3-4): 397-405.
  9. Cao J, Luo SF, Liu JW, Li Y. Safety evaluation on fluoride con- tent in black tea. Food Chem 2004; 88: 233-236.
  10. Stagg GV, Millin DJ. The nutritional and therapeutic value of tea- a review. J Sci Food Agri 1975; 26:1439-1459.
  11. Fernandez-Caceres PL, Martin MJ, Pablos F, Gonzalez AG. Differentiation of tea (Camellia sinensis) varieties and their ge- ographical origin according to their metal content. J Agri Food Chem 2001; 49:4775-4779.
  12. Mandiwana KL, Panichev N, Panicheva S. Determination of chromium(VI) in black, green and herbal teas.Food Chem 2011; 129: 1839–1843.
  13. Liang Y, Lu J, Zhang L, Wu S, Wu Y. Estimation of black tea quality by analysis of chemical composition and colour dif- ference of tea infusions. Food Chem 2003; 80: 283-290.
  14. Matsuura H, Hokura A, Katsuki F, Itoh A, Haraguchi H. Multi- element determination and speciation of major to trace elements in black tea leaves by ICP-AES and ICP-MS with the aid of size e