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Pereira Junior JB, Carvalho VS, Ferreira WQ, Araujo RGO, Ferreira SLC. Green sample preparation of medicinal herbs in closed digester block for elemental determination by ICP OES. J Pharm Biomed Anal 2024; 238:115810. [PMID: 37944460 DOI: 10.1016/j.jpba.2023.115810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/13/2023] [Accepted: 10/20/2023] [Indexed: 11/12/2023]
Abstract
This work presents a simple, cost-effective, and environmentally friendly digestion method employing inductively coupled plasma optical emission spectrometry (ICP OES) for the determination of As, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, P, Pb, Sr, and Zn in medicinal herbs. A fractional factorial design uses a multivariate strategy to optimize the experimental parameters. At 180 ºC and 120 min of sample digestion, the optimal condition for a closed block digester was achieved with a mixture consisting of 1.38 mL of HNO3 65% m m-1, 1.00 mL of H2O2 30% m m-1, and 2.62 mL of deionized water, using a mass of 0.10 g medicinal herb sample. The optimized procedure resulted in low dissolved organic carbon content and residual acidity concentration. The values of limits of detection (LOD) and of quantification (LOQ) ranging from 0.06 (Cd) to 1.9 (P) mg kg-1 and 0.2 (Cd) to 6.3 mg kg-1 (P), respectively. Accuracy was confirmed through the analysis of three certified reference materials, where agreement ranged from 83 (Sr) to 116% (As) for all analytes. The AGREE metric has confirmed the greenness of the proposed method. Twenty-seven medicinal herbs samples were used to assess the applicability of the developed procedure. Principal component analysis (PCA) was applied to inorganic constituent concentration data to classify the medicinal herbs, an excellent tool for classifying samples.
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Affiliation(s)
- João B Pereira Junior
- Universidade Federal da Bahia, Instituto de Química, Departamento de Química Analítica, Campus Universitário de Ondina, 40170-115 Salvador, Bahia, Brazil; Instituto Nacional de Ciência e Tecnologia, INCT, de Energia e Ambiente, Universidade Federal da Bahia, 40170-270 Salvador, Bahia, Brazil.
| | - Vanessa S Carvalho
- Universidade Federal da Bahia, Instituto de Química, Departamento de Química Analítica, Campus Universitário de Ondina, 40170-115 Salvador, Bahia, Brazil; Instituto Nacional de Ciência e Tecnologia, INCT, de Energia e Ambiente, Universidade Federal da Bahia, 40170-270 Salvador, Bahia, Brazil
| | - William Q Ferreira
- Universidade Federal da Bahia, Instituto de Química, Departamento de Química Analítica, Campus Universitário de Ondina, 40170-115 Salvador, Bahia, Brazil; Instituto Nacional de Ciência e Tecnologia, INCT, de Energia e Ambiente, Universidade Federal da Bahia, 40170-270 Salvador, Bahia, Brazil
| | - Rennan G O Araujo
- Universidade Federal da Bahia, Instituto de Química, Departamento de Química Analítica, Campus Universitário de Ondina, 40170-115 Salvador, Bahia, Brazil; Instituto Nacional de Ciência e Tecnologia, INCT, de Energia e Ambiente, Universidade Federal da Bahia, 40170-270 Salvador, Bahia, Brazil.
| | - Sérgio L C Ferreira
- Universidade Federal da Bahia, Instituto de Química, Departamento de Química Analítica, Campus Universitário de Ondina, 40170-115 Salvador, Bahia, Brazil; Instituto Nacional de Ciência e Tecnologia, INCT, de Energia e Ambiente, Universidade Federal da Bahia, 40170-270 Salvador, Bahia, Brazil.
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Li G, Yan N, Li G. The Effect of In Vitro Gastrointestinal Digestion on the Antioxidants, Antioxidant Activity, and Hypolipidemic Activity of Green Jujube Vinegar. Foods 2022; 11:foods11111647. [PMID: 35681396 PMCID: PMC9180043 DOI: 10.3390/foods11111647] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/25/2022] [Accepted: 05/29/2022] [Indexed: 02/01/2023] Open
Abstract
Healthy fruit vinegar has been extensively favored in China in recent years. As a new type of fruit vinegar developed by our laboratory, green jujube vinegar has the characteristics of good taste and rich nutrition. To study the effect of in vitro gastrointestinal digestion on the antioxidant and hypolipidemic activity of green jujube vinegar, so as to provide basic data for research and the development of healthy food antioxidants, including the total phenolic content (TPC), total flavonoid content (TFC), total acid content, and volatile acid content, were measured. The antioxidant activity was measured by using 2,2-Diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-Azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) free radical scavenging methods and the ferric reducing antioxidant power assay (FRAP), and the hypolipidemic activity was measured by cholesterol adsorption and the sodium cholate adsorption capacities. The results show that gastric digestion significantly (p < 0.05) decreased the TPC, TFC, total acid content, and volatile acid content, for which the highest reductions were up to 54.17%, 72%, 88.83% and 82.35%, respectively. During intestinal digestion, the TFC remained at a high level and unchanged, and the TFC and volatile acid content significantly (p < 0.05) decreased by 72.66% and 89.05%, respectively. The volatile acid content did not significantly (p > 0.05) change within 2 h. The ABTS free radical scavenging ability and the reducing power free radical scavenging rate were correlated with the TPC, TFC, and total acid contents, and the DPPH free radical scavenging ability and cholesterol adsorption capacity were not. These findings suggest that green jujube vinegar can be a potential functional food for people’s use.
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Andrade AMD, Galazzi RM, Miró M, Arruda MAZ. In vitro bioaccessibility of metals from tape tea - A low-cost emerging drug. J Trace Elem Med Biol 2020; 62:126613. [PMID: 32712520 DOI: 10.1016/j.jtemb.2020.126613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 05/25/2020] [Accepted: 06/11/2020] [Indexed: 02/01/2023]
Abstract
BACKGROUND An in vitro physiologically relevant test based on the standard Unified Bioaccessibility Method (UBM) combined with inductively coupled plasma mass spectrometry was performed in this study to ascertain the elemental bioaccessibility pools of tape tea as emerging low-cost abuse drug under fasted conditions. METHODS Elemental quantification in tape tea and body fluid extracts was performed by an inductively coupled plasma quadrupole mass spectrometer - ICP-MS, and for sample preparation of the bioaccessibility extracts prior to ICP-MS analysis, a microwave-assisted acid decomposition was applied by using a microwave oven. The Unified Bioaccessibility Method (UBM) was considered for investigation of elemental bioaccessibility in tape tea, required a full set of organic compounds, salts, and enzymes. RESULTS Considering total element evaluation through ICP-MS, Co, Ni, Mn, and Zn are found at the highest concentrations in the sample, namely 415 ± 36, 202 ± 55, 1389 ± 225 and 2397 ± 197 μg L-1, respectively. Regarding the oral bioaccessibility test, after both gastric and gastrointestinal extractions Co, Ni, and Mn are fully bioaccessible while for Zn the bioaccessibility is ca. 66 %. CONCLUSION According to the first results in the literature proposed for these samples, the bioaccessibility results indicate an increment in day-to-day total element concentration and depending on the concentration of each element that an individual consumes in its usual diet, the total concentration can exceed the TDI. There are several possible toxic effects caused by the excess of Co, Ni and Mn, which might be expected by their high total concentrations.
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Affiliation(s)
- Aline Martins de Andrade
- Spectrometry, Sample Preparation and Mechanization Group, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, Campinas, SP 13083-970, Brazil; National Institute of Science and Technology for Bioanalytics, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, Campinas, SP 13083-970, Brazil
| | - Rodrigo Moretto Galazzi
- Spectrometry, Sample Preparation and Mechanization Group, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, Campinas, SP 13083-970, Brazil; National Institute of Science and Technology for Bioanalytics, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, Campinas, SP 13083-970, Brazil
| | - Manuel Miró
- FI-TRACE Group, Department of Chemistry, University of the Balearic Islands, Carretera de Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
| | - Marco Aurélio Zezzi Arruda
- Spectrometry, Sample Preparation and Mechanization Group, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, Campinas, SP 13083-970, Brazil; National Institute of Science and Technology for Bioanalytics, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, Campinas, SP 13083-970, Brazil.
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Pavez-Guajardo C, Ferreira SRS, Mazzutti S, Guerra-Valle ME, Sáez-Trautmann G, Moreno J. Influence of In Vitro Digestion on Antioxidant Activity of Enriched Apple Snacks with Grape Juice. Foods 2020; 9:E1681. [PMID: 33212925 PMCID: PMC7698461 DOI: 10.3390/foods9111681] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 11/06/2020] [Accepted: 11/09/2020] [Indexed: 11/23/2022] Open
Abstract
Fruits are sources of bioactive compounds (BACs), such as polyphenols. This research aimed to study the in vitro bioaccessibility of polyphenols from enriched apple snacks with grape juice and determine their antioxidant capacity. Impregnation (I) treatments were carried out at atmospheric pressure and in a vacuum (IV) at 30, 40, and 50 °C and their combinations with ohmic heating (OH), I/OH, and IV/OH. Later, samples were dehydrated by forced convection at 40, 50, and 60 °C. Enriched samples were subjected to in vitro digestion. The total polyphenols, monomeric polyphenols, and antioxidant activities were determined from recovered extracts. Results showed that total polyphenols present in higher concentrations in the gastric phase, 271.85 ± 7.64 mg GAE/100 g d.m. Monomeric polyphenols' behavior during in vitro digestion for the VI/OH 50 °C and dried treatment (60 °C) was descending, mainly in quercetin, which decreased by 49.38% concerning the initial concentration, before digestion. The cyanin, catechin, epicatechin, and epigallocatechin decreased by 26.66%, 20.71%, 23.38%, and 21.73%, respectively. Therefore, based on obtained results, the IV/OH 50 °C treatment (dried 60 °C) is the best combination to incorporate polyphenols from grape juice.
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Affiliation(s)
- Constanza Pavez-Guajardo
- Food Engineering Department, Universidad del Bío-Bío, Casilla 447, Chillán 4081112, Chile; (C.P.-G.); (M.E.G.-V.); (G.S.-T.)
| | - Sandra R. S. Ferreira
- Chemical and Food Engineering Department, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (S.R.S.F.); (S.M.)
| | - Simone Mazzutti
- Chemical and Food Engineering Department, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (S.R.S.F.); (S.M.)
| | - María Estuardo Guerra-Valle
- Food Engineering Department, Universidad del Bío-Bío, Casilla 447, Chillán 4081112, Chile; (C.P.-G.); (M.E.G.-V.); (G.S.-T.)
| | - Guido Sáez-Trautmann
- Food Engineering Department, Universidad del Bío-Bío, Casilla 447, Chillán 4081112, Chile; (C.P.-G.); (M.E.G.-V.); (G.S.-T.)
| | - Jorge Moreno
- Food Engineering Department, Universidad del Bío-Bío, Casilla 447, Chillán 4081112, Chile; (C.P.-G.); (M.E.G.-V.); (G.S.-T.)
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Szymczycha-Madeja A, Welna M, Pohl P. Simplified Method of Multi-Elemental Analysis of Dialyzable Fraction of Tea Infusions by FAAS and ICP OES. Biol Trace Elem Res 2020; 195:272-290. [PMID: 31342341 PMCID: PMC7150660 DOI: 10.1007/s12011-019-01828-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 07/10/2019] [Indexed: 11/25/2022]
Abstract
A fast and straightforward sample preparation procedure of the dialyzable fraction of infusions of teas prior to their analysis on Al, Ba, Ca, Cu, Fe, Mg, Mn, Ni, Sr, and Zn contents by flame atomic absorption spectrometry (FAAS) and inductively coupled plasma optical emission spectrometry (ICP OES) was developed and validated. The proposed methodology was based on acidification with HNO3 only and demonstrated good analytical performance, i.e., precision (0.80-5.0%), accuracy (< 5%), recoveries of elements (97.4-105%), and their detection limits (0.075-1.1 μg L-1) along with linearity of calibration curves in the whole studied concentration ranges. Applicability of the evaluated procedure, being a useful alternative to time-consuming wet digestions, was tested by determining bioaccessibility of elements in 20 infusions of black (BT) and green (GT) teas as assessed with the aid of in vitro gastrointestinal digestion. Average contributions of bioaccessible fractions (%) of studied metals were as follows: 1.18 (Al)-40.7% (Ca) and 4.65% (Al)-46.3% (Ca) for BTs and GTs, respectively. Drinking daily four cups (1 L) of tea, recommended dietary intakes (RDIs) of Ca, Cu, Fe, Mg, and Zn were covered to a small degree (< 1.5%). Only bioaccessibility of Mn highly contributed to RDI for this metal. According to provisional tolerable weekly intakes (PTWIs) for toxic elements such as Al and Ni, consumption of both types of teas should not represent any health risk. Additionally, analysis of variance of results clearly indicated that BTs and GTs were mostly differentiated due to concentrations of the bioaccessible fraction of Al, Ba, Cu, and Ni.
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Affiliation(s)
- Anna Szymczycha-Madeja
- Department of Analytical Chemistry and Chemical Metallurgy, Faculty of Chemistry, Wroclaw University of Technology, Smoluchowskiego 23,, 50-372 Wroclaw, Poland
| | - Maja Welna
- Department of Analytical Chemistry and Chemical Metallurgy, Faculty of Chemistry, Wroclaw University of Technology, Smoluchowskiego 23,, 50-372 Wroclaw, Poland
| | - Pawel Pohl
- Department of Analytical Chemistry and Chemical Metallurgy, Faculty of Chemistry, Wroclaw University of Technology, Smoluchowskiego 23,, 50-372 Wroclaw, Poland
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Method Validation for Multi-Elemental Analysis of Dialyzable and Non-dialyzable Fractions of Coffee Brews by F AAS and ICP OES: a Bioaccessibility Study. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1352-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Influence of the in vitro gastrointestinal digestion on the antioxidant activity of Artemisia gorgonum Webb and Hyptis pectinata (L.) Poit. infusions from Cape Verde. Food Res Int 2018; 115:150-159. [PMID: 30599926 DOI: 10.1016/j.foodres.2018.08.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 07/25/2018] [Accepted: 08/10/2018] [Indexed: 01/28/2023]
Abstract
The phenolic profile and antioxidant activity of Cape Verde's Artemisia gorgonum Webb and Hyptis pectinata (L.) Poit. infusions before and after in vitro simulation of the gastrointestinal digestion were determined. The LC-UV/DAD fingerprinting analysis allowed the identification of 3-O-caffeoylquinic acid, chlorogenic acid, 3,5 dicaffeoylquinic acid, 4,5-dicaffeoylquinic acid and other caffeoylquinic acids derivatives on A. gorgonum infusion, and of caffeoylquinic acid and quercetin derivatives on H. pectinata infusion. Despite some decrease in the chromatographic area of several peaks, no relevant qualitative alterations on the chromatographic profile were observed between the digested and undigested herbal infusions. Results obtained showed a decrease on the antioxidant capacity of both tested herbal infusions after the in vitro digestion. This decrease was more pronounced for H. pectinata than for A. gorgonum and was also more pronounced regarding the radical scavenging capacity than regarding the reducing capacity. After complete digestion the superoxide anion and the DPPH-radical scavenging capacities decreased ≈ 43 and 75% for H. pectinata and ≈ 31 and 70% for A. gorgonum. Despite the observed differences before and after simulated gastrointestinal digestion, both infusions still had antioxidant activity at the end of this process. Thus, the antioxidant potential of A. gorgonum and H. pectinata infusions from Cape Verde, prepared as traditionally used, seems to be kept in some extend throughout the digestive system.
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