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Ollennu-Chuasam P, Ahmed H, Koistinen V, Hanhineva K, Linderborg KM, Suomela JP. Lipophilic and Hydrophilic Metabolites as Descriptors of Different Coffee Beverages. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:16461-16474. [PMID: 38984670 DOI: 10.1021/acs.jafc.4c03347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Coffee is a widely consumed beverage rich in bioactive phytochemicals. This study investigated the effect of brewing method on the profile of potential bioactive compounds in different coffee beverages using metabolomics and lipidomics based on UHPLC-MS/QTOF. The oil contents of the espresso coffee (EC), pot coffee (PC), instant coffee (IC), and filter coffee (FC) beverages studied were 0.13% ± 0.002, 0.12% ± 0.001, 0.04% ± 0.002, and 0.03% ± 0.003, respectively. Univariate analysis indicated significant differences (P < 0.001) in oil content when EC and PC beverages were compared with IC and FC beverages. Principal component analysis revealed similarities in the lipid profiles of FC and EC beverages and the hydrophilic profiles of PC and FC beverages. The EC beverage had the highest intensity of hydrophilic compounds such as adenine, theobromine, chlorogenic acid, and caffeine. The PC beverage was the most abundant in triglycerides, phosphatidylcholine, and diterpenes. Cafestol and kahweol esters, but not their free forms, were the most abundant diterpenes in the PC beverage. This work provides information on the differences in the profile of potentially bioactive compounds in four commonly consumed coffee beverage types and, thus, on the possible differences in the health effects of these coffee beverage types.
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Affiliation(s)
| | - Hany Ahmed
- Food Sciences, Department of Life Technologies, University of Turku, Turku 20014, Finland
| | - Ville Koistinen
- Food Sciences, Department of Life Technologies, University of Turku, Turku 20014, Finland
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio 70211, Finland
| | - Kati Hanhineva
- Food Sciences, Department of Life Technologies, University of Turku, Turku 20014, Finland
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio 70211, Finland
| | - Kaisa M Linderborg
- Food Sciences, Department of Life Technologies, University of Turku, Turku 20014, Finland
| | - Jukka-Pekka Suomela
- Food Sciences, Department of Life Technologies, University of Turku, Turku 20014, Finland
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Wierzejska RE, Gielecińska I, Hallmann E, Wojda B. Polyphenols vs. Caffeine in Coffee from Franchise Coffee Shops: Which Serving of Coffee Provides the Optimal Amount of This Compounds to the Body. Molecules 2024; 29:2231. [PMID: 38792093 PMCID: PMC11124071 DOI: 10.3390/molecules29102231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/06/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
The scientific literature indicates that there is a limited number of data on the content of bioactive components in coffees consumed "on the go". Therefore, this study examined the polyphenol and caffeine content of different types of coffee from franchise coffee shops, and the caffeine/total polyphenol ratio. The five most popular types of coffee purchased in six franchise coffee shops in Warsaw were analysed. A total of 120 coffee samples were tested. A significant positive (r = 0.7407, p < 0.001) correlation was found between the total polyphenol and caffeine content in all coffee types tested. Per unit volume, espresso coffee had the highest significant (p < 0.005) average total polyphenol and caffeine contents (232.9 ± 63.9 mg/100 mL and 198.6 ± 68.3 mg/100 mL, respectively). After taking into account the coffee's serving size, a serving of Americano provided significantly (p < 0.05) the most total polyphenol (average 223.5 ± 81.5 mg), while the highest caffeine content was provided by a serving of ice latte/latte frappe (average 136 ± 57.0 mg). The most favourable ratio of caffeine to total polyphenols (0.56) was found in a serving of Americano coffee; therefore, it seems that this coffee can be considered optimal in terms of the content of both compounds. These findings demonstrate that the polyphenol and caffeine contents of coffees offered in franchise coffee shops are closely related to the serving size.
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Affiliation(s)
- Regina Ewa Wierzejska
- Department of Nutrition and Nutritional Value of Food, National Institute of Public Health NIH—National Research Institute, Chocimska St. 24, 00-791 Warsaw, Poland;
| | - Iwona Gielecińska
- Department of Food Safety, National Institute of Public Health NIH—National Research Institute, Chocimska St. 24, 00-791 Warsaw, Poland;
| | - Ewelina Hallmann
- Institute of Human Nutrition Sciences, Department of Functional and Organic Food, Warsaw University of Life Sciences, Nowoursynowska St. 159c, 02-776 Warsaw, Poland;
- Bioeconomy Research Institute, Agriculture Academy, Vytautas Magnus University, K. Donelaičio Str. 58, 44248 Kanuas, Lithuania
| | - Barbara Wojda
- Department of Nutrition and Nutritional Value of Food, National Institute of Public Health NIH—National Research Institute, Chocimska St. 24, 00-791 Warsaw, Poland;
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Eshete FA, Tola YB, Kuyu CG, Tolessa K, Mulugeta D, Gure S. Physicochemical stability and sensory quality of selected Ethiopian coffee ( Coffea arabica L.) brands as affected by packaging materials during storage. Heliyon 2024; 10:e29323. [PMID: 38644831 PMCID: PMC11031754 DOI: 10.1016/j.heliyon.2024.e29323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 04/04/2024] [Accepted: 04/04/2024] [Indexed: 04/23/2024] Open
Abstract
Ethiopia's economy heavily relies on coffee, the country's primary export. However, there is a need for improvement in the current packaging materials for parchment coffee during extended storage. An experiment was conducted to evaluate the effectiveness of four different packaging materials (Jute, Woven Polypropylene internally lined with low-density propylene, Grain Pro, and Purdue Improved Crop Storage) on the quality of three brands of Parchment Coffee (Limu, Sidama, and Yirgacheffe) stored for 12 months. The results demonstrated that hermetic packaging materials like Purdue Improved Crop Storage and Grain Pro bags outperformed the Jute bag control in maintaining the original coffee quality throughout the storage period. There was a significant interaction between the coffee brands and the packaging materials for most measured parameters, except bioactive compounds. Notably, Sidama and Yirgacheffe brands stored in hermetic bags consistently achieved cup quality values above 80 %, meeting the requirements for specialty coffee grade. However, the Limu brand did not meet the specialty coffee criteria. The study recommends using hermetic storage materials such as PICS and Grain Pro bags for extended coffee storage. By adopting these methods, the renowned Ethiopian coffee brands can uphold their exceptional quality standards in the international market and ensure customer satisfaction.
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Affiliation(s)
- Firehiwot Assefa Eshete
- Department of Post-harvest Management, Jimma University College of Agriculture and Veterinary Medicine, Jimma, Ethiopia
| | - Yetenayet B. Tola
- Department of Post-harvest Management, Jimma University College of Agriculture and Veterinary Medicine, Jimma, Ethiopia
| | - Chala G. Kuyu
- Department of Post-harvest Management, Jimma University College of Agriculture and Veterinary Medicine, Jimma, Ethiopia
| | - Kassaye Tolessa
- Ethiopian Institute of Agricultural Research, Addis Ababa, Ethiopia
| | - Dinka Mulugeta
- Ethiopian Institute of Agricultural Research, Addis Ababa, Ethiopia
| | - Shitaye Gure
- Jimma University College of Agriculture and Veterinary Medicine, Jimma, Ethiopia
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Smrke S, Eiermann A, Yeretzian C. The role of fines in espresso extraction dynamics. Sci Rep 2024; 14:5612. [PMID: 38453983 PMCID: PMC10920694 DOI: 10.1038/s41598-024-55831-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/28/2024] [Indexed: 03/09/2024] Open
Abstract
The impact of particle size distribution of coffee grounds on espresso extraction was explored. Finely ground coffee for espresso has a characteristically bimodal particle size distribution. For a given median grind size, different grinding technologies can yield a different share of fines (particles < 100 µm). We performed espresso extractions for a range of median particle sizes and systematically varying the share of fines by adding sieved fines to the coffee grounds. Dynamic beverage weights, extraction percentage, extraction time and dynamic headspace PTR-MS (proton-transfer mass spectrometer) analysis and sensory evaluation of the resulting brews were measured. We show that the share of fines plays a key role in the espresso extraction flow rate. An increase of share of fines decreases coffee bed permeability, leads to reduced flow rates and longer extraction times. A statistical model using partial least squares regression of the particle size distributions of coffee grounds confirms that fines decrease the coffee bed permeability. The PTR-MS analysis shows a non-linear increase of aroma compounds in the cup with increasing extraction yield. Our hypothesis is that both extraction efficiency and post-extraction evaporative losses of aroma compounds influence the final aroma compound concentrations in the cup.
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Affiliation(s)
- Samo Smrke
- Institute of Chemistry and Biological Chemistry, Coffee Excellence Center, Zurich University of Applied Sciences, Einsiedlerstrasse 31, 8820, Wädenswil, Switzerland.
| | | | - Chahan Yeretzian
- Institute of Chemistry and Biological Chemistry, Coffee Excellence Center, Zurich University of Applied Sciences, Einsiedlerstrasse 31, 8820, Wädenswil, Switzerland
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Yust BG, Wilkinson F, Rao NZ. Variables Affecting the Extraction of Antioxidants in Cold and Hot Brew Coffee: A Review. Antioxidants (Basel) 2023; 13:29. [PMID: 38247454 PMCID: PMC10812495 DOI: 10.3390/antiox13010029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/12/2023] [Accepted: 12/14/2023] [Indexed: 01/23/2024] Open
Abstract
Coffee beans are a readily available, abundant source of antioxidants used worldwide. With the increasing interest in and consumption of coffee beverages globally, research into the production, preparation, and chemical profile of coffee has also increased in recent years. A wide range of variables such as roasting temperature, coffee grind size, brewing temperature, and brewing duration can have a significant impact on the extractable antioxidant content of coffee products. While there is no single standard method for measuring all of the antioxidants found in coffee, multiple methods which introduce the coffee product to a target molecule or reagent can be used to deduce the overall radical scavenging capacity. In this article, we profile the effect that many of these variables have on the quantifiable concentration of antioxidants found in both cold and hot brew coffee samples. Most protocols for cold brew coffee involve an immersion or steeping method where the coffee grounds are in contact with water at or below room temperature for several hours. Generally, a higher brewing temperature or longer brewing time yielded greater antioxidant activity. Most studies also found that a lower degree of coffee bean roast yielded greater antioxidant activity.
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Affiliation(s)
- Brian G. Yust
- College of Humanities & Sciences, Thomas Jefferson University, Philadelphia, PA 19144, USA
| | - Frank Wilkinson
- Department of Biological and Chemical Sciences, College of Life Sciences, Thomas Jefferson University, Philadelphia, PA 19144, USA; (F.W.); (N.Z.R.)
| | - Niny Z. Rao
- Department of Biological and Chemical Sciences, College of Life Sciences, Thomas Jefferson University, Philadelphia, PA 19144, USA; (F.W.); (N.Z.R.)
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Miziak B, Błaszczyk B, Chrościńska-Krawczyk M, Czuczwar SJ. Caffeine and Its Interactions with Antiseizure Medications-Is There a Correlation between Preclinical and Clinical Data? Int J Mol Sci 2023; 24:17569. [PMID: 38139396 PMCID: PMC10744211 DOI: 10.3390/ijms242417569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/03/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023] Open
Abstract
Experimental studies reveal that caffeine (trimethylxanthine) at subconvulsive doses, distinctly reduced the anticonvulsant activity of numerous antiseizure medications (ASMs) in rodents, oxcarbazepine, tiagabine and lamotrigine being the exceptions. Clinical data based on low numbers of patients support the experimental results by showing that caffeine (ingested in high quantities) may sharply increase seizure frequency, considerably reducing the quality of patients' lives. In contrast, this obviously negative activity of caffeine was not found in clinical studies involving much higher numbers of patients. ASMs vulnerable to caffeine in experimental models of seizures encompass carbamazepine, phenobarbital, phenytoin, valproate, gabapentin, levetiracetam, pregabalin and topiramate. An inhibition of R-calcium channels by lamotrigine and oxcarbazepine may account for their resistance to the trimethylxanthine. This assumption, however, is complicated by the fact that topiramate also seems to be a blocker of R-calcium channels. A question arises why large clinical studies failed to confirm the results of experimental and case-report studies. A possibility exists that the proportion of patients taking ASMs resistant to caffeine may be significant and such patients may be sufficiently protected against the negative activity of caffeine.
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Affiliation(s)
- Barbara Miziak
- Department of Pathophysiology, Medical University of Lublin, 20-090 Lublin, Poland;
| | - Barbara Błaszczyk
- Faculty of Medical Sciences, Lipinski University, 25-734 Kielce, Poland;
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Lapčíková B, Lapčík L, Barták P, Valenta T, Dokládalová K. Effect of Extraction Methods on Aroma Profile, Antioxidant Activity and Sensory Acceptability of Specialty Coffee Brews. Foods 2023; 12:4125. [PMID: 38002183 PMCID: PMC10669957 DOI: 10.3390/foods12224125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/08/2023] [Accepted: 11/13/2023] [Indexed: 11/26/2023] Open
Abstract
Specialty coffees from various geographical origins were processed using different extraction methods. Four extraction techniques were employed: cold brew (CB), espresso (ES), French press (FR), and aeropress (AE). The potential health benefits of coffee brews were linked to their antioxidant activity, as determined by the DPPH assay, and total polyphenol content (TPC) measured through the Folin-Ciocalteu reducing-capacity assay. The Columbia (C) espresso coffee type (omni-roasting) exhibited the highest antioxidant activity (86.31 ± 0.70) μmol/100 mL, with a TPC value of (44.41 ± 0.35) mg GAE/g. Quantitative analyses of caffeine and chlorogenic acid were conducted using high-performance liquid chromatography (HPLC). The evaluation of coffee aroma profiles involved the application of headspace solid-phase microextraction/gas chromatography-mass spectrometry (HS-SPME/GC-MS) and was complemented by sensory analysis following the Specialty Coffee Association (SCA) standard protocol. The predominant volatile compounds found in all samples included furans, phenols, pyrazines, and terpenes. The EY espresso type (medium dark roasting) had the highest levels of most coffee volatiles. The C cold brew type (omni-roasting) was rated as the preferred coffee in terms of its sensory characteristics and flavour. In summary, ES and CB were found to be more effective extraction methods for the parameters assessed.
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Affiliation(s)
- Barbora Lapčíková
- Department of Physical Chemistry, Faculty of Science, Palacky University Olomouc, 17. Listopadu 12, 771 46 Olomouc, Czech Republic or (B.L.); (P.B.)
- Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlín, nám. T. G. Masaryka 5555, 760 01 Zlín, Czech Republic; (T.V.); (K.D.)
| | - Lubomír Lapčík
- Department of Physical Chemistry, Faculty of Science, Palacky University Olomouc, 17. Listopadu 12, 771 46 Olomouc, Czech Republic or (B.L.); (P.B.)
- Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlín, nám. T. G. Masaryka 5555, 760 01 Zlín, Czech Republic; (T.V.); (K.D.)
| | - Petr Barták
- Department of Physical Chemistry, Faculty of Science, Palacky University Olomouc, 17. Listopadu 12, 771 46 Olomouc, Czech Republic or (B.L.); (P.B.)
| | - Tomáš Valenta
- Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlín, nám. T. G. Masaryka 5555, 760 01 Zlín, Czech Republic; (T.V.); (K.D.)
| | - Kateřina Dokládalová
- Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlín, nám. T. G. Masaryka 5555, 760 01 Zlín, Czech Republic; (T.V.); (K.D.)
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Angeloni G, Masella P, Spadi A, Guerrini L, Corti F, Bellumori M, Calamai L, Innocenti M, Parenti A. Using ground coffee particle size and distribution to remodel beverage properties. Eur Food Res Technol 2023. [DOI: 10.1007/s00217-023-04210-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
AbstractThis study examined the influence of ground coffee granulometry and particle distribution on extraction parameters. They have been investigated the physicochemical properties, and the bioactive and volatile compound content in coffee obtained by a conventional filter method, the French Press, as a function of particle size and distribution. Some samples have been used for the extraction the directly the grinding machine, set at different grinding grade, and other samples have been seed before the usage in order to reproduce samples at different particle size class very homogeneous. The results showed that bioactive and volatile compounds are released differently in the beverages depending on the specific particle size. The results have been demonstrated that a homogeneous grind was more deficient in bioactive compounds and total dissolved solids than a classical, bimodal grind. Moreover, extraction from a very fine homogeneous grind was poorest with respect to these compounds, despite the greater surface in contact with the solvent. Conversely, bimodal grinds obtained conventional by the grinding machine, which were more heterogeneous from a granulometric point of view, were found to be richer in volatile organic and bioactive compounds. The study highlights that the grind plays a key role in producing well-extracted coffee and, therefore, in making the most of the potential inherent in the roasted bean.
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Effects of Total Dissolved Solids, Extraction Yield, Grinding, and Method of Preparation on Antioxidant Activity in Fermented Specialty Coffee. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8080375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of this study was to determine the effect of total dissolved solids (TDS), extraction yield (EY), and grinding on total polyphenols (TP), total flavonoids (TF), and total antioxidant capacity (TAC) in a fermented specialty coffee prepared using different methods of filtration (Hario V60, Aeropress, and the French press). The concentrations of antioxidant compounds differed between the TDS treatments and the methods of preparation. The TP and TF with Hario V60 were the highest at a TDS of 1.84%. The TP with Aeropress was at its highest at a TDS of 1.82%. TAC with the French press was at its highest at a TDS of 1.58%. EY was at its highest with fine grinding (Hario V60 > French press > Aeropress at 25.91%, 21.69%, and 20.67%, respectively). French press coffees had the highest TP (p = 0.045). Hario V60 coffee had the highest TF, but the TAC of the coffees remained comparable for all methods. EY and TDS influenced TP, TF, and TAC in the coffee beverages using the finest grinding size for all methods of preparation. The finer the grind, the higher the antioxidant activity of the beverages. Measuring coffee extractions should be one of the most important processes in fermented coffee preparation.
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Polese B, Izzo L, Mancino N, Pesce M, Rurgo S, Tricarico MC, Lombardi S, De Conno B, Sarnelli G, Ritieni A. Effect of Dewaxed Coffee on Gastroesophageal Symptoms in Patients with GERD: A Randomized Pilot Study. Nutrients 2022; 14:nu14122510. [PMID: 35745239 PMCID: PMC9231412 DOI: 10.3390/nu14122510] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/15/2022] [Accepted: 06/15/2022] [Indexed: 11/16/2022] Open
Abstract
Gastroesophageal Reflux Disease (GERD) is multifactorial pathogenesis characterized by the abnormal reflux of stomach contents into the esophagus. Symptoms are worse after the ingestion of certain foods, such as coffee. Hence, a randomized pilot study conducted on 40 Italian subjects was assessed to verify the effect of standard (SC) and dewaxed coffee (DC) consumption on gastroesophageal reflux symptoms and quality of life in patients with gastrointestinal diseases. The assessment of patient diaries highlighted a significant percentage reduction of symptoms frequency when consuming DC and a significant increase in both heartburn-free and regurgitation-free days. Consequentially, patients had a significant increase of antacid-free days during the DC assumption. Moreover, the polyphenolic profile of coffee pods was ascertained through UHPLC-Q-Orbitrap HRMS analysis. Chlorogenic acids (CGAs) were the most abundant investigated compounds with a concentration level ranging between 7.316 (DC) and 6.721 mg/g (SC). Apart from CGAs, caffeine was quantified at a concentration level of 5.691 mg/g and 11.091 for DC and SC, respectively. While still preliminary, data obtained from the present pilot study provide promising evidence for the efficacy of DC consumption in patients with GERD. Therefore, this treatment might represent a feasible way to make coffee more digestible and better tolerated.
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Affiliation(s)
- Barbara Polese
- Digestive and Nutritional Pathophysiology Unit, Department of Clinical Medicine and Surgery, University of Naples “Federico II”, Via Pansini 5, 80131 Naples, Italy; (B.P.); (N.M.); (M.P.); (S.R.); (B.D.C.); (G.S.)
| | - Luana Izzo
- Food Lab, Department of Pharmacy, University of Naples “Federico II”, Via Domenico Montesano 49, 80131 Naples, Italy; (S.L.); (A.R.)
- Correspondence: ; Tel.: +39-081-678116
| | - Nicola Mancino
- Digestive and Nutritional Pathophysiology Unit, Department of Clinical Medicine and Surgery, University of Naples “Federico II”, Via Pansini 5, 80131 Naples, Italy; (B.P.); (N.M.); (M.P.); (S.R.); (B.D.C.); (G.S.)
| | - Marcella Pesce
- Digestive and Nutritional Pathophysiology Unit, Department of Clinical Medicine and Surgery, University of Naples “Federico II”, Via Pansini 5, 80131 Naples, Italy; (B.P.); (N.M.); (M.P.); (S.R.); (B.D.C.); (G.S.)
| | - Sara Rurgo
- Digestive and Nutritional Pathophysiology Unit, Department of Clinical Medicine and Surgery, University of Naples “Federico II”, Via Pansini 5, 80131 Naples, Italy; (B.P.); (N.M.); (M.P.); (S.R.); (B.D.C.); (G.S.)
| | | | - Sonia Lombardi
- Food Lab, Department of Pharmacy, University of Naples “Federico II”, Via Domenico Montesano 49, 80131 Naples, Italy; (S.L.); (A.R.)
| | - Barbara De Conno
- Digestive and Nutritional Pathophysiology Unit, Department of Clinical Medicine and Surgery, University of Naples “Federico II”, Via Pansini 5, 80131 Naples, Italy; (B.P.); (N.M.); (M.P.); (S.R.); (B.D.C.); (G.S.)
| | - Giovanni Sarnelli
- Digestive and Nutritional Pathophysiology Unit, Department of Clinical Medicine and Surgery, University of Naples “Federico II”, Via Pansini 5, 80131 Naples, Italy; (B.P.); (N.M.); (M.P.); (S.R.); (B.D.C.); (G.S.)
- United Nations Educational, Scientific and Cultural Organization Chair on Health Education and Sustainable Development, University of Naples “Federico II”, 80131 Naples, Italy
| | - Alberto Ritieni
- Food Lab, Department of Pharmacy, University of Naples “Federico II”, Via Domenico Montesano 49, 80131 Naples, Italy; (S.L.); (A.R.)
- United Nations Educational, Scientific and Cultural Organization Chair on Health Education and Sustainable Development, University of Naples “Federico II”, 80131 Naples, Italy
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Nasrallah MP, Elbejjani M, Nasreddine L, Chami H, Ismaeel H, Fleifel M, Al Zahraa Chokor F, Tamim H. Incidence of diabetes and its predictors in the Greater Beirut Area: a five-year longitudinal study. Diabetol Metab Syndr 2022; 14:67. [PMID: 35509100 PMCID: PMC9066987 DOI: 10.1186/s13098-022-00833-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 04/11/2022] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Type 2 Diabetes (T2D) remains a world epidemic. Obtaining accurate estimates of its incidence and their predictors will aid in targeting preventive measures, allocating resources, and strategizing its management. The Middle East North Africa region has high T2D prevalence and rates of rise. Few incidence studies exist for the region, and none from Lebanon. The current study objective was to determine diabetes incidence and diabetes predictors in a community-based Lebanese sample. A secondary objective was to describe the metabolic control over time in adults with preexisting diabetes. METHODS This is a five-year (2014-2019) follow-up study on a random sample of 501 residents of the Greater Beirut area. Out of 478 people eligible to participate in the follow-up study, 198 returned (response rate 39.5%). Assessment included medical history, anthropometric measures, food frequency, sleep, and lifestyle questionnaires. Laboratory data included glycemic indices (fasting glucose and HbA1C) and other biological markers. The diagnosis of probable diabetes (PD) was based on one abnormal test for either fasting glucose ≥ 126 mg/dL or HbA1C ≥ 6.5% or having history of diabetes. RESULTS The incidence of diabetes was 17.2 (95% CI 9.6-28.7) per 1000 person-years. Cardiometabolic risk factors independently associated with diabetes were: older age, higher BMI, family history of diabetes, metabolic syndrome, higher CRP and triglyceride level; whereas an independent predictor of diabetes was previous BMI. In addition, the 42 participants with preexisting diabetes had worsening of their metabolic profile over a five-year period. CONCLUSIONS The incidence of diabetes was high as compared to some reported world rates, and in line with the high prevalence in the MENA region. The risk was highest in those with positive family history and the presence of the metabolic syndrome or its components. Preventive measures should particularly target participants with that specific risk profile. This becomes particularly important when observing that metabolic control gets worse over time in individuals with diabetes.
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Affiliation(s)
- Mona P Nasrallah
- Faculty of Medicine, Department of Internal Medicine, Division of Endocrinology, American University of Beirut Medical Center, Beirut, Lebanon
- Vascular Medicine Program, American University of Beirut, Beirut, Lebanon
| | - Martine Elbejjani
- Faculty of Medicine, Clinical Research Institute, American University of Beirut Medical Center, Beirut, Lebanon
- Faculty of Medicine, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Lara Nasreddine
- Vascular Medicine Program, American University of Beirut, Beirut, Lebanon
- Faculty of Agricultural and Food Sciences, Department of Nutrition and Food Sciences, American University of Beirut, Beirut, Lebanon
| | - Hassan Chami
- Faculty of Medicine, Department of Internal Medicine, Division of Pulmonary and Critical Care, American University of Beirut Medical Center, Beirut, Lebanon
| | - Hussein Ismaeel
- Vascular Medicine Program, American University of Beirut, Beirut, Lebanon
- Faculty of Medicine, Department of Internal Medicine, Division of Cardiology, American University of Beirut, Beirut, Lebanon
| | - Mohamad Fleifel
- Faculty of Medicine, Department of Internal Medicine, Division of Endocrinology, American University of Beirut Medical Center, Beirut, Lebanon
| | - Fatima Al Zahraa Chokor
- Faculty of Medicine, Clinical Research Institute, American University of Beirut Medical Center, Beirut, Lebanon
- Faculty of Agricultural and Food Sciences, Department of Nutrition and Food Sciences, American University of Beirut, Beirut, Lebanon
| | - Hani Tamim
- Faculty of Medicine, Clinical Research Institute, American University of Beirut Medical Center, Beirut, Lebanon.
- Faculty of Medicine, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon.
- College of Medicine, Alfaisal University, Riyadh, Kingdom of Saudi Arabia.
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Yildirim S, Demir E, Gok I, Tokusoglu O. Use of electrochemical techniques for determining the effect of brewing techniques (Espresso, Turkish and Filter coffee) and roasting levels on total antioxidant capacity of coffee beverage. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sevinc Yildirim
- Department of Gastronomy, Faculty of Applied Sciences İstanbul Okan University Istanbul, 34959 Turkey
| | - Ersin Demir
- Department of Analytical Chemistry, Faculty of Pharmacy Afyonkarahisar Health Sciences University Afyonkarahisar, 03200 Turkey
| | - Ilkay Gok
- Department of Gastronomy, Faculty of Applied Sciences İstanbul Okan University Istanbul, 34959 Turkey
| | - Ozlem Tokusoglu
- Department of Food Engineering Celal Bayar University Manisa Turkey
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Farag MA, Zayed A, Sallam IE, Abdelwareth A, Wessjohann LA. Metabolomics-Based Approach for Coffee Beverage Improvement in the Context of Processing, Brewing Methods, and Quality Attributes. Foods 2022; 11:foods11060864. [PMID: 35327289 PMCID: PMC8948666 DOI: 10.3390/foods11060864] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/15/2022] [Accepted: 03/15/2022] [Indexed: 02/01/2023] Open
Abstract
Coffee is a worldwide beverage of increasing consumption, owing to its unique flavor and several health benefits. Metabolites of coffee are numerous and could be classified on various bases, of which some are endogenous to coffee seeds, i.e., alkaloids, diterpenes, sugars, and amino acids, while others are generated during coffee processing, for example during roasting and brewing, such as furans, pyrazines, and melanoidins. As a beverage, it provides various distinct flavors, i.e., sourness, bitterness, and an astringent taste attributed to the presence of carboxylic acids, alkaloids, and chlorogenic acids. To resolve such a complex chemical makeup and to relate chemical composition to coffee effects, large-scale metabolomics technologies are being increasingly reported in the literature for proof of coffee quality and efficacy. This review summarizes the applications of various mass spectrometry (MS)- and nuclear magnetic resonance (NMR)-based metabolomics technologies in determining the impact of coffee breeding, origin, roasting, and brewing on coffee chemical composition, and considers this in relation to quality control (QC) determination, for example, by classifying defected and non-defected seeds or detecting the adulteration of raw materials. Resolving the coffee metabolome can aid future attempts to yield coffee seeds of desirable traits and best flavor types.
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Affiliation(s)
- Mohamed A. Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr El Aini St., Cairo 11562, Egypt
- Correspondence: (M.A.F.); (L.A.W.)
| | - Ahmed Zayed
- Pharmacognosy Department, College of Pharmacy, Tanta University, Elguish Street (Medical Campus), Tanta 31527, Egypt;
- Institute of Bioprocess Engineering, Technical University of Kaiserslautern, Gottlieb-Daimler-Str. 49, 67663 Kaiserslautern, Germany
| | - Ibrahim E. Sallam
- Pharmacognosy Department, College of Pharmacy, October University for Modern Sciences and Arts (MSA), 6th of October City 12566, Egypt;
| | - Amr Abdelwareth
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, New Cairo 11835, Egypt;
| | - Ludger A. Wessjohann
- Leibniz Institute of Plant Biochemistry, Department of Bioorganic Chemistry, Weinberg 3, 06120 Halle, Germany
- Correspondence: (M.A.F.); (L.A.W.)
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Elmacı İ, Gok I. Effect of three post-harvest methods and roasting degree on sensory profile of Turkish coffee assessed by Turkish and Brazilian panelists. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:5368-5377. [PMID: 33650176 DOI: 10.1002/jsfa.11185] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 02/18/2021] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND This study was carried out in order to investigate the role of post-harvest methods and roasting degree on the sensory profile of Turkish coffees and to compare the results between two sensory panels: Turkey and Brazil. Bourbon variety of Arabica coffee beans processed by three different post-harvest methods (natural, pulped natural and fully washed) and roasted at three different roasting degrees (light, medium and dark). RESULTS Ground coffee in powder size was heated with cold water and prepared in a Turkish coffee machine. Twenty assessors - ten Turkish and ten Brazilian - were selected and trained to assess 20 flavor attributes of nine Turkish coffee samples. Sensory evaluation results showed that the effects of roasting method on flavor development were perceived more dominantly than effects of post-harvest methods. For the first time, this study highlighted the sensory analysis of Turkish coffees assessed by Turkish and Brazilian assessors. CONCLUSION Turkish coffee flavor profiles were significantly influenced by roasting method and no significant effects of post-harvest method were observed. Sensorial properties of Turkish coffee were affected by several factors, such as geographical origin and techniques used for preparation of coffee beans, cultural tradition, lifestyle, social behavior and habit. © 2021 Society of Chemical Industry.
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Affiliation(s)
- İlkay Elmacı
- Faculty of Applied Sciences, Istanbul Okan University, Tuzla, Turkey
| | - Ilkay Gok
- Faculty of Applied Sciences, Istanbul Okan University, Tuzla, Turkey
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15
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Effect of Roasting Degree on the Antioxidant Properties of Espresso and Drip Coffee Extracted from Coffea arabica cv. Java. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11157025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Coffee roasting is the process of applying heat to green coffee beans to bring out flavors through chemical changes. This study aimed to investigate the effect of roasting degree on the antioxidant capacities of espresso and drip coffee extracted from Coffea arabica cv. Java in Laos. Green coffee beans were roasted under four conditions (Light-medium, Medium, Moderately dark, and Very dark), and espresso and drip coffee were extracted. The contents of total phenolics (TP), total flavonoids (TF), and chlorogenic acids (CGA) decreased as the roasting degree increased, whereas the caffeine content increased. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity was lower in the Medium, Moderately dark, and Very dark compared to the Light-medium. The ferric reducing antioxidant power (FRAP) was lower in the Very dark than the Light-medium, Medium, and Moderately dark. Principal component analysis showed that TP, TF, CGA, caffeine, DPPH radical scavenging activity, and FRAP distinguish coffee extracts with various roasting degrees. Therefore, it is concluded that roasting degree is a modifiable factor for the use of coffee as an antioxidant material in the food industry, and TF, TP, CGA, and caffeine contents, DPPH radical scavenging activity and FRAP are good indicators for determining the antioxidant capacity of coffee.
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Yu JM, Chu M, Park H, Park J, Lee KG. Analysis of Volatile Compounds in Coffee Prepared by Various Brewing and Roasting Methods. Foods 2021; 10:foods10061347. [PMID: 34200936 PMCID: PMC8230519 DOI: 10.3390/foods10061347] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/05/2021] [Accepted: 06/09/2021] [Indexed: 11/19/2022] Open
Abstract
Volatile compounds of coffee brewed under various roasting conditions and by different brewing methods were analyzed. Green coffee beans (Coffea arabica) were roasted at 235 °C for 13 min, 240 °C for 15 min, and 245 °C for 17 min. Roasted coffee beans were ground into particles of three different sizes (710, 500, and 355 μm) and brewed by an espresso coffee machine and the cold brew method. Three types of water (filtered, tap, and bottled) were used for coffee extraction. SPME-GC-MS results indicated that increasing the roasting temperature and time increased the levels of 2,2′-methylene-bis-furan, guaiacol, and 4-ethylguaiacol (p < 0.05) and decreased the levels of furfural (p < 0.05). Grind size was inversely proportional to the measured signal of volatiles by GC-MS (p < 0.05). The measured GC/MS intensities of 2-methylpyrazine, 2,5-dimethylpyrazine, and 2-methoxy-4-vinylphenol were significantly higher in coffee brewed with filtered water (p < 0.05) than tap and bottled water. 2-Methylpyrazine, 1-methylpyrrole, and 2-acetylfuran were the most abundant components in the cold brew. Overall, roasting conditions and extraction methods were determined to be significant factors for volatile compounds in coffee. This is the first study showing the analysis of volatile compounds in coffee according to various types of water and extraction methods, such as espresso and cold brew coffee.
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Olechno E, Puścion-Jakubik A, Zujko ME, Socha K. Influence of Various Factors on Caffeine Content in Coffee Brews. Foods 2021; 10:1208. [PMID: 34071879 PMCID: PMC8228209 DOI: 10.3390/foods10061208] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/24/2021] [Accepted: 05/25/2021] [Indexed: 12/25/2022] Open
Abstract
Coffee brews are one of the most popular drinks. They are consumed for caffeine and its stimulant properties. The study aimed to summarize data on the influence of various factors on caffeine content in brews prepared with different methods. The study was carried out using a literature review from 2010-2020. PubMed and Google Scholar databases were searched. Data on caffeine content was collected by analyzing the following factors: the influence of species, brewing time, water temperature, pressure, degree of roast, grinding degree, water type, water/coffee ratio as well as other factors (such as geographical origin). To sum up, converting caffeine content to 1 L of the brew, the highest content is that of brews prepared in an espresso machine (portafilter), with the amount of 7.5 g of a coffee blend (95% Robusta + 5% Arabica), and water (the volume of coffee brew was 25 mL) at a temperature of 92 °C and a pressure of 7 bar, but the highest content in one portion was detected in a brew of 50 g of Robusta coffee poured with 500 mL of cold water (25 °C) and boiled.
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Affiliation(s)
- Ewa Olechno
- Department of Food Biotechnology, Faculty of Health Science, Medical University of Białystok, Szpitalna 37 Street, 15-295 Białystok, Poland; (E.O.); (M.E.Z.)
| | - Anna Puścion-Jakubik
- Department of Bromatology, Faculty of Pharmacy with the Division of Laboratory Medicine, Medical University of Białystok, Mickiewicza 2D Street, 15-222 Białystok, Poland;
| | - Małgorzata Elżbieta Zujko
- Department of Food Biotechnology, Faculty of Health Science, Medical University of Białystok, Szpitalna 37 Street, 15-295 Białystok, Poland; (E.O.); (M.E.Z.)
| | - Katarzyna Socha
- Department of Bromatology, Faculty of Pharmacy with the Division of Laboratory Medicine, Medical University of Białystok, Mickiewicza 2D Street, 15-222 Białystok, Poland;
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Arfaoui L. Dietary Plant Polyphenols: Effects of Food Processing on Their Content and Bioavailability. Molecules 2021; 26:molecules26102959. [PMID: 34065743 PMCID: PMC8156030 DOI: 10.3390/molecules26102959] [Citation(s) in RCA: 90] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/12/2021] [Accepted: 05/14/2021] [Indexed: 12/12/2022] Open
Abstract
Dietary plant polyphenols are natural bioactive compounds that are increasingly attracting the attention of food scientists and nutritionists because of their nutraceutical properties. In fact, many studies have shown that polyphenol-rich diets have protective effects against most chronic diseases. However, these health benefits are strongly related to both polyphenol content and bioavailability, which in turn depend on their origin, food matrix, processing, digestion, and cellular metabolism. Although most fruits and vegetables are valuable sources of polyphenols, they are not usually consumed raw. Instead, they go through some processing steps, either industrially or domestically (e.g., cooling, heating, drying, fermentation, etc.), that affect their content, bioaccessibility, and bioavailability. This review summarizes the status of knowledge on the possible (positive or negative) effects of commonly used food-processing techniques on phenolic compound content and bioavailability in fruits and vegetables. These effects depend on the plant type and applied processing parameters (type, duration, media, and intensity). This review attempts to shed light on the importance of more comprehensive dietary guidelines that consider the recommendations of processing parameters to take full advantage of phenolic compounds toward healthier foods.
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Affiliation(s)
- Leila Arfaoui
- Department of Clinical Nutrition, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80324, Jeddah 21589, Saudi Arabia
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19
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Kim I, Jung S, Kim E, Lee JW, Kim CY, Ha JH, Jeong Y. Physicochemical characteristics of Ethiopian Coffea arabica cv. Heirloom coffee extracts with various roasting conditions. Food Sci Biotechnol 2021; 30:235-244. [PMID: 33732514 DOI: 10.1007/s10068-020-00865-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 12/01/2020] [Accepted: 12/11/2020] [Indexed: 11/25/2022] Open
Abstract
This study aimed to investigate the physicochemical characteristics of Ethiopian Coffea arabica cv. Heirloom coffee extracts with various roasting conditions. Green coffee beans were roasted at four different conditions (Light-medium, Medium, Moderately dark, and Very dark) and used to extract espresso and drip coffee. Moisture content in coffee beans was decreased as the roasting degree increased. The contents of crude fat and ash were lower in the Light-medium roasted coffee beans than in green coffee beans but increased as the roasting degree increased. The values of lightness (L*), redness (a*), yellowness (b*), and browning index of coffee extracts were decreased as the roasting degree increased. Total dissolved solids in espresso coffee were increased with increasing roasting degree but decreased in drip coffee. In both the extracts, the contents of reducing sugar, titratable acidity, organic acids, and chlorogenic acid were decreased, but that of caffeine was increased with the roasting degree increased. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-020-00865-w.
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Affiliation(s)
- Inyong Kim
- Research Center for Industrialization of Natural Nutraceuticals, Dankook University, Cheonan, Chungnam 31116 Republic of Korea
| | - Sunyoon Jung
- Research Center for Industrialization of Natural Nutraceuticals, Dankook University, Cheonan, Chungnam 31116 Republic of Korea.,Department of Food Science and Nutrition, Dankook University, Cheonan, Chungnam 31116 Republic of Korea
| | - Eunkyung Kim
- Fine Korea Co., Ltd, Seoul, 07294 Republic of Korea
| | - Jin-Wook Lee
- Department of Exercise Prescription and Rehabilitation, Dankook University, Cheonan, Chungnam 04781 Republic of Korea
| | - Chan-Yang Kim
- Department of Kinesiologic Medical Science, Dankook University, Cheonan, Chungnam 04781 Republic of Korea
| | - Jung-Heun Ha
- Research Center for Industrialization of Natural Nutraceuticals, Dankook University, Cheonan, Chungnam 31116 Republic of Korea.,Department of Food Science and Nutrition, Dankook University, Cheonan, Chungnam 31116 Republic of Korea
| | - Yoonhwa Jeong
- Research Center for Industrialization of Natural Nutraceuticals, Dankook University, Cheonan, Chungnam 31116 Republic of Korea.,Department of Food Science and Nutrition, Dankook University, Cheonan, Chungnam 31116 Republic of Korea
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Ismail T, Donati-Zeppa S, Akhtar S, Turrini E, Layla A, Sestili P, Fimognari C. Coffee in cancer chemoprevention: an updated review. Expert Opin Drug Metab Toxicol 2020; 17:69-85. [PMID: 33074040 DOI: 10.1080/17425255.2021.1839412] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Chemoprevention of cancer refers to the use of natural or synthetic compounds to abolish or perturb a variety of steps in tumor initiation, promotion, and progression. This can be realized through different mechanisms, including activation of free radical scavenging enzymes, control of chronic inflammation, and downregulation of specific signaling pathways. AREAS COVERED The goal of this article is to critically review recent evidence on association between coffee and prevention of different types of cancer, with particular emphasis on the molecular mechanisms and the bioactive compounds involved in its anticancer activity. EXPERT OPINION Coffee is a mixture of different compounds able to decrease the risk of many types of cancer. However, its potential anticancer activity is not completely understood. Hundreds of biologically active components such as caffeine, chlorogenic acid, diterpenes are contained in coffee. Further research is needed to fully elucidate the molecular mechanisms underlying the anticancer effects of coffee and fully understand the role of different confounding factors playing a role in its reported anticancer activity.
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Affiliation(s)
- Tariq Ismail
- Institute of Food Science & Nutrition, Bahauddin Zakariya University , Multan, Pakistan
| | - Sabrina Donati-Zeppa
- Department of Biomolecular Sciences (DISB), Università Degli Studi Di Urbino Carlo Bo , Urbino, Italy
| | - Saeed Akhtar
- Institute of Food Science & Nutrition, Bahauddin Zakariya University , Multan, Pakistan
| | - Eleonora Turrini
- Department for Life Quality Studies, Alma Mater Studiorum - Università Di Bologna , Rimini, Italy
| | - Anam Layla
- National Institute of Food Science & Technology, University of Agriculture Faisalabad , Faisalabad, Pakistan
| | - Piero Sestili
- Department of Biomolecular Sciences (DISB), Università Degli Studi Di Urbino Carlo Bo , Urbino, Italy
| | - Carmela Fimognari
- Department for Life Quality Studies, Alma Mater Studiorum - Università Di Bologna , Rimini, Italy
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21
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Uzun F, Aslan MG, Öter K, Kaim M. The acute effects of single cup of coffee on ocular biometric parameters in healthy subjects. J Curr Ophthalmol 2019; 31:394-398. [PMID: 31844789 PMCID: PMC6896472 DOI: 10.1016/j.joco.2019.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 04/27/2019] [Accepted: 05/09/2019] [Indexed: 12/02/2022] Open
Abstract
Purpose To evaluate ocular biometric changes in healthy subjects after caffeine consumption from a cup of coffee. Methods A total of 36 subjects were included in this prospective observational study. Axial length (AL) and anterior segment parameters including aqueous depth (AD), anterior chamber depth (ACD), lens thickness (LT), and central corneal thickness (CCT) were measured with optic biometry, Lenstar LS 900 (Haag-Streit, Inc., Koeniz, Switzerland) before and 1 and 4 h after ingesting a cup of coffee (60 mg caffeine/100 mL). Results Mean age of the participants was 30.05 ± 7.43 years (range, 19–45). At baseline, 1st, and 4th hour, AL values were 23.9 ± 1.04 mm, 23.91 ± 1.04 mm, and 23.89 ± 1.04 mm, respectively, and no significant difference was observed (P>0.05). At baseline, 1st, and 4th hour, AD values were 3.06 ± 0.3 mm, 3.11 ± 0.3 mm, and 3.09 ± 0.3 mm, and ACD values were 3.6 ± 0.32, 3.66 ± 0.31, and 3.64 ± 0.31, respectively. AD and ACD values were significantly greater than baseline at 1st and 4th hours following coffee ingestion. Coffee intake caused a significant reduction in LT, compared with baseline and at the 1st and 4th hours which were 3.76 ± 0.28 mm, 3.69 ± 0.32 mm, and 3.72 ± 0.27 mm, respectively. No statistically significant difference was determined in between the 3 measurements in terms of CCT (P>0.05). Conclusion Caffeine causes a significant increase in AD and ACD and a significant decrease in LT following oral intake, for at least 4 h.
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Affiliation(s)
- Feyzahan Uzun
- Recep Tayyip Erdogan University Medical School, Department of Ophthalmology, Rize, Turkey
| | - Mehmet Gökhan Aslan
- Recep Tayyip Erdogan University Medical School, Department of Ophthalmology, Rize, Turkey
| | - Kamile Öter
- Recep Tayyip Erdogan University Medical School, Department of Ophthalmology, Rize, Turkey
| | - Muhammet Kaim
- Recep Tayyip Erdogan University Medical School, Department of Ophthalmology, Rize, Turkey
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Reyes CM, Cornelis MC. Caffeine in the Diet: Country-Level Consumption and Guidelines. Nutrients 2018; 10:nu10111772. [PMID: 30445721 PMCID: PMC6266969 DOI: 10.3390/nu10111772] [Citation(s) in RCA: 131] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 11/10/2018] [Accepted: 11/13/2018] [Indexed: 12/11/2022] Open
Abstract
Coffee, tea, caffeinated soda, and energy drinks are important sources of caffeine in the diet but each present with other unique nutritional properties. We review how our increased knowledge and concern with regard to caffeine in the diet and its impact on human health has been translated into food-based dietary guidelines (FBDG). Using the Food and Agriculture Organization list of 90 countries with FBDG as a starting point, we found reference to caffeine or caffeine-containing beverages (CCB) in 81 FBDG and CCB consumption data (volume sales) for 56 of these countries. Tea and soda are the leading CCB sold in African and Asian/Pacific countries while coffee and soda are preferred in Europe, North America, Latin America, and the Caribbean. Key themes observed across FBDG include (i) caffeine-intake upper limits to avoid risks, (ii) CCB as replacements for plain water, (iii) CCB as added-sugar sources, and (iv) health benefits of CCB consumption. In summary, FBDG provide an unfavorable view of CCB by noting their potential adverse/unknown effects on special populations and their high sugar content, as well as their diuretic, psycho-stimulating, and nutrient inhibitory properties. Few FBDG balanced these messages with recent data supporting potential benefits of specific beverage types.
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Affiliation(s)
- Celine Marie Reyes
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
| | - Marilyn C Cornelis
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
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