Chemical profiling for the quality assurance of green tea commercialized in Colombia

Planta Medica ◽  
2014 ◽  
Vol 80 (10) ◽  
Author(s):  
FA Bernal ◽  
C Guerrero-Perilla ◽  
LL Orduz-Diaz ◽  
E Coy-Barrera
Keyword(s):  
Quality Assurance ◽  
Green Tea ◽  
Chemical Profiling

scholarly journals Analysis of Differentiated Chemical Components between Zijuan Purple Tea and Yunkang Green Tea by UHPLC–Orbitrap–MS/MS Combined with Chemometrics

Foods ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1070
Author(s):  
Mengwan Li ◽  
Ying Shen ◽  
Tiejun Ling ◽  
Chi-Tang Ho ◽  
Daxiang Li ◽  
...  
Keyword(s):  
Green Tea ◽  
High Performance ◽  
Chemical Components ◽  
Targeted Metabolomics ◽  
Potential Health ◽  
Chemical Profiling ◽  
Flavone Glycosides ◽  
Total Anthocyanins ◽  
Chemical Profiles ◽  
Chemical Evidence

Zijuan tea (Camellia sinensis var. assamica cv. Zijuan) is a unique purple tea. Recently, purple tea has drawn much attention for its special flavor and health benefits. However, the characteristic compounds of purple tea compared with green tea have not been reported yet. The present study employed a non-targeted metabolomics approach based on ultra-high performance liquid chromatography (UHPLC)-Orbitrap-tandem mass spectrometry (MS/MS) for comprehensive analysis of characteristic metabolites between Zijuan purple tea (ZJT) and Yunkang green tea (YKT). Partial least squares-discriminant analysis (PLS-DA) indicated that there are significant differences in chemical profiles between ZJT and YKT. A total of 66 major differential metabolites included catechins, proanthocyanins, flavonol and flavone glycosides, phenolic acids, amino acids and alkaloids were identified in ZJT. Among them, anthocyanins are the most characteristic metabolites. Nine glycosides of anthocyanins and six glycosides of proanthocyanins were found to be significantly higher in ZJT than that in YKT. Subsequently, pathway analysis revealed that ZJT might generate anthocyanins and proanthocyanins through the flavonol and flavone glycosides. Furthermore, quantitative analysis showed absolutely higher concentrations of total anthocyanins in ZJT, which correlated with the metabolomics results. This study presented the comprehensive chemical profiling and the characterized metabolites of ZJT. These results also provided chemical evidence for potential health functions of ZJT

Chemical profiling and discrimination of green tea and Pu-erh raw tea based on UPLC–Q–Orbitrap–MS/MS and chemometrics

2020 ◽  
Vol 326 ◽  
pp. 126760 ◽  
Author(s):  
Jiayi Zhong ◽  
Ning Chen ◽  
Sichen Huang ◽  
Xiaowei Fan ◽  
Yi Zhang ◽  
...  
Keyword(s):  
Green Tea ◽  
Chemical Profiling ◽  
Orbitrap Ms

Outcomes/Quality Assurance

1999 ◽  
Vol 8 (1) ◽  
pp. 15-17
Author(s):  
Michael Groher ◽  
Caryn Easterling
Keyword(s):  
Quality Assurance

Percutaneous Tracheostomy: A Multidisciplinary Approach

2008 ◽  
Vol 18 (2) ◽  
pp. 87-98 ◽  
Author(s):  
Vinciya Pandian ◽  
Thai Tran Nguyen ◽  
Marek Mirski ◽  
Nasir Islam Bhatti
Keyword(s):  
Health Care ◽  
Quality Assurance ◽  
Data Collection ◽  
Health Care Professionals ◽  
Multidisciplinary Approach ◽  
Percutaneous Tracheostomy ◽  
Johns Hopkins Hospital ◽  
Prospective Data ◽  
Comprehensive Service ◽  
Over Time

Abstract The techniques of performing a tracheostomy has transformed over time. Percutaneous tracheostomy is gaining popularity over open tracheostomy given its advantages and as a result the number of bedside tracheostomies has increased necessitating the need for a Percutaneous Tracheostomy Program. The Percutaneous Tracheostomy Program at the Johns Hopkins Hospital is a comprehensive service that provides care to patients before, during, and after a tracheostomy with a multidisciplinary approach aimed at decreasing complications. Education is provided to patients, families, and health-care professionals who are involved in the management of a tracheostomy. Ongoing prospective data collection serves as a tool for Quality Assurance.

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