Assessment of the nutritional value of various teas infusions in terms of the macro- and trace elements content

Długaszek, Maria; Kaszczuk, M.

doi:10.1016/j.jtemb.2019.126428

Cited by 20 publications

(7 citation statements)

References 24 publications

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“…In other reports, tea is usually evaluated as a source of macro and microelements (Emekli-Alturfan, Yarat, & Akyuz, 2009;Malik et al, 2013;Özcan, Ünver, Uçar, & Arslan, 2008). According to some authors, daily consumption of tea can satisfy the body's mineral requirements (Długaszek & Kaszczuk, 2019). While there are a large number of papers revealing chemical composition and a variety of biological effects of teas, there are limited studies concerning the composition of herbal-and fruit-based teas.…”

Section: Introductionmentioning

confidence: 99%

Bioactive compounds in water extracts prepared from rosehip‐containing herbal blends

Petkova

Ognyanov

Kirchev

et al. 2020

J Food Process Preserv

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In this study, rosehip tea and two rosehip-containing blends, along with their infusions and decoctions, were investigated. The first blend contained hibiscus and rosehip, while the second one was a mixture of rosehip, apple, pear, and St. John's wort. It was established that the carbohydrates were a major constituent in all samples. However, the highest protein, ash, and uronic acids content were detected in a hibiscus-containing blend. The rosehip material exhibited the highest lipid content, while higher levels of natural pigments were determined in St. John's wort-containing blend.

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Section: Introductionmentioning

confidence: 99%

Bioactive compounds in water extracts prepared from rosehip‐containing herbal blends

Petkova

Ognyanov

Kirchev

et al. 2020

J Food Process Preserv

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“…14 The mineral component of rice husk such as calcium, iron, zinc, selenium, copper, magnesium, manganese, cobalt, potassium, sodium and phosphorus were obtained with an atomic absorption spectrophotometry (AAS) (Solar Thermos Elemental Flame AAS; Model: S4 = 71096) following the procedure of Długaszek and Kaszczuk. 15 The sample's bioactive components was obtained with the procedure of Balamurugan et al, 16 using a GC-MS device (Agilent 6890N Gas Chromatograph with Agilent 5975 Mass Selective Detector, and a 30 μm x 0.25 mm ID fused-silica capillary column chemically attached with SE-54 (DB-5), and 1-μm film thickness). The unknown components in the mass spectrum of the GC-MS were identified using a database from the National Institute of Standards and Technology (NIST) library.…”

Section: Methodsmentioning

confidence: 99%

Phytochemical and Nutrient Composition of Rice Husks

2023

TJNPR

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This study deals with the determination of possible phytocompounds, minerals, vitamins and nutritional constituents present in Rice husk (RH). Dried rice husk samples were collected from a local rice mill at Awgu Town in Enugu, South-East Nigeria. The proximate, phytochemical, vitamin and mineral composition of the ground sample were investigated using standard methods of analysis, while a Gas chromatography-mass spectrometry (GC-MS) device was employed for the characterization of bioactive components of the sample. The proximate analysis revealed the presence of carbohydrate (37.04%), crude protein (1.85%), moisture (7.93%), crude fat (3.76%), fibre (25.74%), and ash content (23.39%). The phytochemical screening high amount of flavonoids, carotenoid, and glycosides in the RH sample. Vitamins such as A, C, D, E, K and B complexes (B1, B2, B3, B5, B6, B7, B9, and B12) as well as minerals (calcium, magnesium, potassium, sodium, zinc, iron, selenium, cobalt, manganese, copper and phosphorus) were also identified in the sample. Meanwhile, the GC-MS analysis of the sample revealed the presence of cynarin, demecolcine, penta-triacontene, hyoscyamine, kheltin, acetyldigoxin, quinoline-3- methyl, coumaric acid, copaene, benzyl benzoate, caryophyllene, danthron, lupenon, beta-amyrin, ephedrine, alpha-ergosterol, galanthamine, kawain, agrimophol, eugenol, anabasine, benzylisoquinoline, carpaine, phytol, phytic acid, myrcene, lobeline, beta-caryophyllene, sparteine, and emetine. This study established that the high nutritional value and bioactive composition of rice husk indicates the rice milling by-product to be a promising food formulate with numerous health benefits.

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“…Nowadays, various analytical techniques including high-performance liquid chromatography (HPLC) [ 4 , 11 , 12 , 13 , 14 ], gas chromatography (GC) [ 15 ], inductively coupled plasma mass spectrometry (ICP-MS) [ 16 , 17 ], tin layer chromatography (TLC) [ 13 , 18 ], inductively coupled plasma optical emission spectrometry (ICP-OES) [ 12 ], atomic absorption spectrometry among (AAS) [ 19 ], and inductively coupled plasma-atomic emission spectrometry (ICP-AES) [ 17 ] are used for qualitative and quantitative analysis of various bioactive components in “teas”. However, high performance liquid chromatography (HPLC) and gas chromatography (GC) are most commonly used.…”

Section: Introductionmentioning

confidence: 99%

Application of Capillary Electrophoresis to the Analysis of Bioactive Compounds in Herbal Raw Materials

2021

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The article is a summary of scientific reports from the last 16 years (2005–2021) on the use of capillary electrophoresis to analyze polyphenolic compounds, coumarins, amino acids, and alkaloids in teas or different parts of plants used to prepare aqueous infusions, commonly known as “tea” or decoctions. This literature review is based on PRISMA guidelines and articles selected in base of criteria carried out using PICOS (Population, Intervention, Comparison, Outcome, Study type). The analysis showed that over 60% of articles included in this manuscript comes from China. The literature review shows that for the selective electrophoretic separation of polyphenolic and flavonoid compounds, the most frequently used capillary electromigration technique is capillary electrophoresis with ultraviolet detection. Nevertheless, the use of capillary electrophoresis-mass spectrometry allows for the sensitive determination of analytes with a lower limit of detection and gives hope for routine use in the analysis of functional foods. Moreover, using the modifications in electrochemical techniques allows methods sensitivity reduction along with the reduction of analysis time.

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Assessment of the nutritional value of various teas infusions in terms of the macro- and trace elements content

Cited by 20 publications

References 24 publications

Bioactive compounds in water extracts prepared from rosehip‐containing herbal blends

Bioactive compounds in water extracts prepared from rosehip‐containing herbal blends

Phytochemical and Nutrient Composition of Rice Husks

Application of Capillary Electrophoresis to the Analysis of Bioactive Compounds in Herbal Raw Materials

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