In vitro analysis of the properties of Beiqishen tea

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

OBJECTIVE: Chinese Beiqishen tea was studied in an in vitro test system. METHODS: Phytochemical screening, trace element analysis, and the analysis of antioxidant properties were carried out. Characteristic constituents were determined by chromatographic (capillary gas chromatography and GCQ Ion Trap mass spectrometry) and spectrometric (ultraviolet and UV-VIS) methods. Element concentrations were determined by inductively coupled plasma optical emission spectrometry. Antioxidant capacity was studied by spectrophotometric and luminometric techniques using a Berthold Lumat 9501 luminometer. Hydrogen-donating activity, reducing power, and total scavenger capacity were measured. RESULTS: Total polyphenol content was 20.77 ± 0.52 g/100 g of drug; total flavonoid content was 0.485 ± 0.036 g/100 g of drug; and tannin content was 9.063 ± 0.782 g/100 g of drug. Caffeine content was 1.08 mg/100 g of drug. Essential oils were identified by gas chromatography: (+)-limonene (21%), p-cymene (1.7%), estragol (3.2%), β-ocimene (1.4%), and thymol (2.6%). Metallic ion analysis showed significantly high concentrations of Al, As, Ba, Cr, Cu, Fe, Mn, Ni, and Ti in the drug. Antioxidant and scavenger properties were identified as a function of concentration. CONCLUSIONS: The tea infusion contained some non-desirable trace elements and caffeine in addition to polyphenols and tannins in high concentrations. Therefore, the consumption of this tea may involve risks.

Original languageEnglish
Pages (from-to)869-875
Number of pages7
JournalNutrition
Volume19
Issue number10
DOIs
Publication statusPublished - Oct 1 2003

Fingerprint

Tea
Pharmaceutical Preparations
Antioxidants
Tannins
Trace Elements
Polyphenols
Caffeine
Gas Chromatography
Ions
Thymol
Phytochemicals
Volatile Oils
Flavonoids
Hydrogen
Mass Spectrometry
Spectrum Analysis
In Vitro Techniques

Keywords

  • Antioxidant activity
  • Bioactive constituents
  • Trace elements

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Surgery
  • Medicine (miscellaneous)

Cite this

In vitro analysis of the properties of Beiqishen tea. / Blázovics, A.; Szentmihályi, K.; Lugasi, A.; Balázs, A.; Hagymási, K.; Stefanovits-Banyai, E.; Then, M.; Rapavi, E.; Héthelyi, É.

In: Nutrition, Vol. 19, No. 10, 01.10.2003, p. 869-875.

Research output: Contribution to journalArticle

@article{718afb3d8c0548d687f018c3f5ac2945,
title = "In vitro analysis of the properties of Beiqishen tea",
abstract = "OBJECTIVE: Chinese Beiqishen tea was studied in an in vitro test system. METHODS: Phytochemical screening, trace element analysis, and the analysis of antioxidant properties were carried out. Characteristic constituents were determined by chromatographic (capillary gas chromatography and GCQ Ion Trap mass spectrometry) and spectrometric (ultraviolet and UV-VIS) methods. Element concentrations were determined by inductively coupled plasma optical emission spectrometry. Antioxidant capacity was studied by spectrophotometric and luminometric techniques using a Berthold Lumat 9501 luminometer. Hydrogen-donating activity, reducing power, and total scavenger capacity were measured. RESULTS: Total polyphenol content was 20.77 ± 0.52 g/100 g of drug; total flavonoid content was 0.485 ± 0.036 g/100 g of drug; and tannin content was 9.063 ± 0.782 g/100 g of drug. Caffeine content was 1.08 mg/100 g of drug. Essential oils were identified by gas chromatography: (+)-limonene (21{\%}), p-cymene (1.7{\%}), estragol (3.2{\%}), β-ocimene (1.4{\%}), and thymol (2.6{\%}). Metallic ion analysis showed significantly high concentrations of Al, As, Ba, Cr, Cu, Fe, Mn, Ni, and Ti in the drug. Antioxidant and scavenger properties were identified as a function of concentration. CONCLUSIONS: The tea infusion contained some non-desirable trace elements and caffeine in addition to polyphenols and tannins in high concentrations. Therefore, the consumption of this tea may involve risks.",
keywords = "Antioxidant activity, Bioactive constituents, Trace elements",
author = "A. Bl{\'a}zovics and K. Szentmih{\'a}lyi and A. Lugasi and A. Bal{\'a}zs and K. Hagym{\'a}si and E. Stefanovits-Banyai and M. Then and E. Rapavi and {\'E} H{\'e}thelyi",
year = "2003",
month = "10",
day = "1",
doi = "10.1016/S0899-9007(03)00157-6",
language = "English",
volume = "19",
pages = "869--875",
journal = "Nutrition",
issn = "0899-9007",
publisher = "Elsevier Inc.",
number = "10",

}

TY - JOUR

T1 - In vitro analysis of the properties of Beiqishen tea

AU - Blázovics, A.

AU - Szentmihályi, K.

AU - Lugasi, A.

AU - Balázs, A.

AU - Hagymási, K.

AU - Stefanovits-Banyai, E.

AU - Then, M.

AU - Rapavi, E.

AU - Héthelyi, É

PY - 2003/10/1

Y1 - 2003/10/1

N2 - OBJECTIVE: Chinese Beiqishen tea was studied in an in vitro test system. METHODS: Phytochemical screening, trace element analysis, and the analysis of antioxidant properties were carried out. Characteristic constituents were determined by chromatographic (capillary gas chromatography and GCQ Ion Trap mass spectrometry) and spectrometric (ultraviolet and UV-VIS) methods. Element concentrations were determined by inductively coupled plasma optical emission spectrometry. Antioxidant capacity was studied by spectrophotometric and luminometric techniques using a Berthold Lumat 9501 luminometer. Hydrogen-donating activity, reducing power, and total scavenger capacity were measured. RESULTS: Total polyphenol content was 20.77 ± 0.52 g/100 g of drug; total flavonoid content was 0.485 ± 0.036 g/100 g of drug; and tannin content was 9.063 ± 0.782 g/100 g of drug. Caffeine content was 1.08 mg/100 g of drug. Essential oils were identified by gas chromatography: (+)-limonene (21%), p-cymene (1.7%), estragol (3.2%), β-ocimene (1.4%), and thymol (2.6%). Metallic ion analysis showed significantly high concentrations of Al, As, Ba, Cr, Cu, Fe, Mn, Ni, and Ti in the drug. Antioxidant and scavenger properties were identified as a function of concentration. CONCLUSIONS: The tea infusion contained some non-desirable trace elements and caffeine in addition to polyphenols and tannins in high concentrations. Therefore, the consumption of this tea may involve risks.

AB - OBJECTIVE: Chinese Beiqishen tea was studied in an in vitro test system. METHODS: Phytochemical screening, trace element analysis, and the analysis of antioxidant properties were carried out. Characteristic constituents were determined by chromatographic (capillary gas chromatography and GCQ Ion Trap mass spectrometry) and spectrometric (ultraviolet and UV-VIS) methods. Element concentrations were determined by inductively coupled plasma optical emission spectrometry. Antioxidant capacity was studied by spectrophotometric and luminometric techniques using a Berthold Lumat 9501 luminometer. Hydrogen-donating activity, reducing power, and total scavenger capacity were measured. RESULTS: Total polyphenol content was 20.77 ± 0.52 g/100 g of drug; total flavonoid content was 0.485 ± 0.036 g/100 g of drug; and tannin content was 9.063 ± 0.782 g/100 g of drug. Caffeine content was 1.08 mg/100 g of drug. Essential oils were identified by gas chromatography: (+)-limonene (21%), p-cymene (1.7%), estragol (3.2%), β-ocimene (1.4%), and thymol (2.6%). Metallic ion analysis showed significantly high concentrations of Al, As, Ba, Cr, Cu, Fe, Mn, Ni, and Ti in the drug. Antioxidant and scavenger properties were identified as a function of concentration. CONCLUSIONS: The tea infusion contained some non-desirable trace elements and caffeine in addition to polyphenols and tannins in high concentrations. Therefore, the consumption of this tea may involve risks.

KW - Antioxidant activity

KW - Bioactive constituents

KW - Trace elements

UR - http://www.scopus.com/inward/record.url?scp=0141894117&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0141894117&partnerID=8YFLogxK

U2 - 10.1016/S0899-9007(03)00157-6

DO - 10.1016/S0899-9007(03)00157-6

M3 - Article

VL - 19

SP - 869

EP - 875

JO - Nutrition

JF - Nutrition

SN - 0899-9007

IS - 10

ER -