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  1. Article: Metabolomics-Based Approach for Coffee Beverage Improvement in the Context of Processing, Brewing Methods, and Quality Attributes

    Farag, Mohamed A. / Zayed, Ahmed / Sallam, Ibrahim E. / Abdelwareth, Amr / Wessjohann, Ludger A.

    Foods. 2022 Mar. 18, v. 11, no. 6

    2022  

    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, ... ...

    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.
    Keywords adulterated products ; astringency ; bitterness ; chemical composition ; coffee (beverage) ; diterpenoids ; furans ; mass spectrometry ; melanoidins ; metabolites ; metabolome ; metabolomics ; nuclear magnetic resonance spectroscopy ; pyrazines ; quality control ; sourness
    Language English
    Dates of publication 2022-0318
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2704223-6
    ISSN 2304-8158
    ISSN 2304-8158
    DOI 10.3390/foods11060864
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Metabolomics-Based Approach for Coffee Beverage Improvement in the Context of Processing, Brewing Methods, and Quality Attributes.

    Farag, Mohamed A / Zayed, Ahmed / Sallam, Ibrahim E / Abdelwareth, Amr / Wessjohann, Ludger A

    Foods (Basel, Switzerland)

    2022  Volume 11, Issue 6

    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, ... ...

    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.
    Language English
    Publishing date 2022-03-18
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2704223-6
    ISSN 2304-8158
    ISSN 2304-8158
    DOI 10.3390/foods11060864
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Effect of Gut Microbiota Biotransformation on Dietary Tannins and Human Health Implications.

    Sallam, Ibrahim E / Abdelwareth, Amr / Attia, Heba / Aziz, Ramy K / Homsi, Masun Nabhan / von Bergen, Martin / Farag, Mohamed A

    Microorganisms

    2021  Volume 9, Issue 5

    Abstract: Tannins represent a heterogeneous group of high-molecular-weight polyphenols that are ubiquitous among plant families, especially in cereals, as well as in many fruits and vegetables. Hydrolysable and condensed tannins, in addition to phlorotannins from ... ...

    Abstract Tannins represent a heterogeneous group of high-molecular-weight polyphenols that are ubiquitous among plant families, especially in cereals, as well as in many fruits and vegetables. Hydrolysable and condensed tannins, in addition to phlorotannins from marine algae, are the main classes of these bioactive compounds. Despite their low bioavailability, tannins have many beneficial pharmacological effects, such as anti-inflammatory, antioxidant, antidiabetic, anticancer, and cardioprotective effects. Microbiota-mediated hydrolysis of tannins produces highly bioaccessible metabolites, which have been extensively studied and account for most of the health effects attributed to tannins. This review article summarises the effect of the human microbiota on the metabolism of different tannin groups and the expected health benefits that may be induced by such mutual interactions. Microbial metabolism of tannins yields highly bioaccessible microbial metabolites that account for most of the systemic effects of tannins. This article also uses explainable artificial intelligence to define the molecular signatures of gut-biotransformed tannin metabolites that are correlated with chemical and biological activity. An understanding of microbiota-tannin interactions, tannin metabolism-related phenotypes (metabotypes) and chemical tannin-metabolites motifs is of great importance for harnessing the biological effects of tannins for drug discovery and other health benefits.
    Language English
    Publishing date 2021-04-29
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms9050965
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Metabolite profiling of three Opuntia ficus-indica fruit cultivars using UPLC-QTOF-MS in relation to their antioxidant potential

    Farag, Mohamed A / Sallam, Ibrahim E / Fekry, Mostafa I / Zaghloul, Soumaya S / El-Dine, Riham S

    Food bioscience. 2020 Aug., v. 36

    2020  

    Abstract: Opuntia ficus-indica is the economically important cactus species belonging to the Cactaceae family. Its importance arises from its nutritional value and various biological activities such as antioxidant, anticancer and antimicrobial activities. This ... ...

    Abstract Opuntia ficus-indica is the economically important cactus species belonging to the Cactaceae family. Its importance arises from its nutritional value and various biological activities such as antioxidant, anticancer and antimicrobial activities. This study attempts to characterize the metabolic profile of three O. ficus cultivars having different colors, i.e., red ‘Rose’, greenish white ‘Bianca’ and yellow-orange represented by peels and pulp tissues using ultra-performance liquid chromatography coupled to high resolution time of flight mass spectrometry (UPLC-QTOF-MS). A total of 45 metabolites were identified mainly flavonoids: isorhamnetin conjugates and phenolic acids, whereas betaxanthins and coumarins were present at lower levels. Principle component analysis and orthogonal projection discriminant analysis showed that dihydroxy psoralen-O-hexoside and glycosidic conjugates of ferulic acid were the most discriminatory metabolites among the peels and pulps within the different cultivars. On the other hand, the level of flavonoids was comparable among the cultivars. The antioxidant activity of peels and pulps extracts were further measured using 2,2-diphenyl-1-picrylhydrazyl and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) assays. ‘‘Rose’’ cultivar peel rich in dihydroxy psoralen-O-hexoside showed the highest antioxidant activity in both assays. This suggested that coumarins and flavonoids mediated high antioxidant activity of O. ficus-indica fruits although present at low levels.
    Keywords 2,2-diphenyl-1-picrylhydrazyl ; Ficus benghalensis ; Opuntia ficus-indica ; antimicrobial properties ; antioxidant activity ; antioxidants ; cacti and succulents ; color ; coumarins ; cultivars ; discriminant analysis ; ferulic acid ; fruit peels ; fruit pulp ; fruits ; isorhamnetin ; mass spectrometry ; metabolites ; nutritive value ; principal component analysis ; ultra-performance liquid chromatography
    Language English
    Dates of publication 2020-08
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 2212-4292
    DOI 10.1016/j.fbio.2020.100673
    Database NAL-Catalogue (AGRICOLA)

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  5. Article: Effect of Gut Microbiota Biotransformation on Dietary Tannins and Human Health Implications

    Sallam, Ibrahim E / Abdelwareth, Amr / Attia, Heba / Aziz, Ramy K / Homsi, Masun Nabhan / von Bergen, Martin / Farag, Mohamed A

    Microorganisms. 2021 Apr. 29, v. 9, no. 5

    2021  

    Abstract: Tannins represent a heterogeneous group of high-molecular-weight polyphenols that are ubiquitous among plant families, especially in cereals, as well as in many fruits and vegetables. Hydrolysable and condensed tannins, in addition to phlorotannins from ... ...

    Abstract Tannins represent a heterogeneous group of high-molecular-weight polyphenols that are ubiquitous among plant families, especially in cereals, as well as in many fruits and vegetables. Hydrolysable and condensed tannins, in addition to phlorotannins from marine algae, are the main classes of these bioactive compounds. Despite their low bioavailability, tannins have many beneficial pharmacological effects, such as anti-inflammatory, antioxidant, antidiabetic, anticancer, and cardioprotective effects. Microbiota-mediated hydrolysis of tannins produces highly bioaccessible metabolites, which have been extensively studied and account for most of the health effects attributed to tannins. This review article summarises the effect of the human microbiota on the metabolism of different tannin groups and the expected health benefits that may be induced by such mutual interactions. Microbial metabolism of tannins yields highly bioaccessible microbial metabolites that account for most of the systemic effects of tannins. This article also uses explainable artificial intelligence to define the molecular signatures of gut-biotransformed tannin metabolites that are correlated with chemical and biological activity. An understanding of microbiota–tannin interactions, tannin metabolism-related phenotypes (metabotypes) and chemical tannin-metabolites motifs is of great importance for harnessing the biological effects of tannins for drug discovery and other health benefits.
    Keywords antioxidants ; artificial intelligence ; bioavailability ; biotransformation ; drugs ; human health ; humans ; hydrolysis ; intestinal microorganisms ; metabolism ; metabolites ; phlorotannins
    Language English
    Dates of publication 2021-0429
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms9050965
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Evaluation of Antioxidant Activity and Biotransformation of

    Sallam, Ibrahim E / Rolle-Kampczyk, Ulrike / Schäpe, Stephanie Serena / Zaghloul, Soumaya S / El-Dine, Riham S / Shao, Ping / Bergen, Martin von / Farag, Mohamed A

    Molecules (Basel, Switzerland)

    2022  Volume 27, Issue 21

    Abstract: Opuntia ficus- ... ...

    Abstract Opuntia ficus-indica
    MeSH term(s) Opuntia ; Antioxidants/pharmacology ; Fruit ; Gastrointestinal Microbiome ; Plant Extracts/pharmacology ; Flavonoids ; Glycosides ; Biotransformation
    Chemical Substances Antioxidants ; piscidic acid (511BQ884F7) ; phloretic acid (6QNC6P18SR) ; Plant Extracts ; Flavonoids ; Glycosides
    Language English
    Publishing date 2022-11-04
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules27217568
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Impact of different processing methods on the phenolics and neuroprotective activity of

    Ezzat, Marwa I / Issa, Marwa Y / Sallam, Ibrahim E / Zaafar, Dalia / Khalil, Heba M A / Mousa, Mohamed R / Sabry, Dina / Gawish, Aya Y / Elghandour, Ahmed H / Mohsen, Engy

    Food & function

    2022  Volume 13, Issue 14, Page(s) 7794–7812

    Abstract: Age-related diseases, including dementia, are a major health concern affecting daily human life. Strawberry ( ...

    Abstract Age-related diseases, including dementia, are a major health concern affecting daily human life. Strawberry (
    MeSH term(s) Aging ; Aluminum Chloride ; Animals ; Female ; Fragaria/chemistry ; Fruit/chemistry ; Galactose/adverse effects ; Galactose/metabolism ; Humans ; Phenols/analysis ; Phytochemicals/analysis ; Plant Extracts/metabolism ; Rats ; Rats, Wistar
    Chemical Substances Phenols ; Phytochemicals ; Plant Extracts ; Aluminum Chloride (3CYT62D3GA) ; Galactose (X2RN3Q8DNE)
    Language English
    Publishing date 2022-07-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 2612033-1
    ISSN 2042-650X ; 2042-6496
    ISSN (online) 2042-650X
    ISSN 2042-6496
    DOI 10.1039/d2fo00645f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Impact of different processing methods on the phenolics and neuroprotective activity of Fragaria ananassa Duch. extracts in a d-galactose and aluminum chloride-induced rat model of aging

    Ezzat, Marwa I. / Issa, Marwa Y. / Sallam, Ibrahim E. / Zaafar, Dalia / Khalil, Heba M. A. / Mousa, Mohamed R. / Sabry, Dina / Gawish, Aya Y. / Elghandour, Ahmed H. / Mohsen, Engy

    Food & function. 2022 July 18, v. 13, no. 14

    2022  

    Abstract: Age-related diseases, including dementia, are a major health concern affecting daily human life. Strawberry (Fragaria ananassa Duch.) is the most eaten fruit worldwide due to its exceptional aroma and flavor. However, it's rapid softening and decay limit ...

    Abstract Age-related diseases, including dementia, are a major health concern affecting daily human life. Strawberry (Fragaria ananassa Duch.) is the most eaten fruit worldwide due to its exceptional aroma and flavor. However, it's rapid softening and decay limit its shelf-life. Freezing and boiling represent the well-known conservation methods to extend its shelf-life. Therefore, we aimed to discover the phytochemical content differences of fresh and processed strawberries associated with investigating and comparing their neuroprotective effects in a rat model of aging. Female Wistar rats were orally pretreated with fresh, boiled, and frozen F. ananassa methanolic extracts (250 mg kg⁻¹) for 2 weeks, and then these extracts were concomitantly exposed to d-galactose [65 mg kg⁻¹, subcutaneously (S/C)] and AlCl₃ (200 mg kg⁻¹, orally) for 6 weeks to develop aging-like symptoms. The results of UPLC/ESI-MS phytochemical profiling revealed 36 secondary metabolites, including phenolics, flavonoids, and their glycoside derivatives. Compared with boiled and frozen extracts, the fresh extract ameliorated the behavioral deficits including anxiety and cognitive dysfunction, upregulated brain HO-1 and Nrf2 levels, and markedly reduced caspase-3 and PPAR-γ levels. Moreover, LDH and miRNA-9, 124 and 132 protein expressions were reduced. The histological architecture of the brain hippocampus was restored and glial fibrillary acidic protein (GFAP) immunoexpression was downregulated. In conclusion, the fresh extract has neuroprotective activity that could have a promising role in ameliorating age-related neurodegeneration.
    Keywords Fragaria ananassa ; aluminum ; animal models ; anxiety ; caspase-3 ; cognitive disorders ; dementia ; females ; flavonoids ; flavor ; fruits ; galactose ; glycosides ; hippocampus ; histology ; humans ; neurodegenerative diseases ; neuroprotective effect ; odors ; phenolic compounds ; secondary metabolites ; shelf life ; strawberries
    Language English
    Dates of publication 2022-0718
    Size p. 7794-7812.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ZDB-ID 2612033-1
    ISSN 2042-650X ; 2042-6496
    ISSN (online) 2042-650X
    ISSN 2042-6496
    DOI 10.1039/d2fo00645f
    Database NAL-Catalogue (AGRICOLA)

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  9. Article: Metabolomics reveals impact of seven functional foods on metabolic pathways in a gut microbiota model.

    Farag, Mohamed A / Abdelwareth, Amr / Sallam, Ibrahim E / El Shorbagi, Mohamed / Jehmlich, Nico / Fritz-Wallace, Katarina / Serena Schäpe, Stephanie / Rolle-Kampczyk, Ulrike / Ehrlich, Anja / Wessjohann, Ludger A / von Bergen, Martin

    Journal of advanced research

    2020  Volume 23, Page(s) 47–59

    Abstract: Functional food defined as dietary supplements that in addition to their nutritional values, can beneficially modulate body functions becomes more and more popular but the reaction of the intestinal microbiota to it is largely unknown. In order to ... ...

    Abstract Functional food defined as dietary supplements that in addition to their nutritional values, can beneficially modulate body functions becomes more and more popular but the reaction of the intestinal microbiota to it is largely unknown. In order to analyse the impact of functional food on the microbiota itself it is necessary to focus on the physiology of the microbiota, which can be assessed in a whole by untargeted metabolomics. Obtaining a detailed description of the gut microbiota reaction to food ingredients can be a key to understand how these organisms regulate and bioprocess many of these food components. Extracts prepared from seven chief functional foods, namely green tea, black tea,
    Language English
    Publishing date 2020-01-03
    Publishing country Egypt
    Document type Journal Article
    ZDB-ID 2541849-X
    ISSN 2090-1224 ; 2090-1232
    ISSN (online) 2090-1224
    ISSN 2090-1232
    DOI 10.1016/j.jare.2020.01.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Global Forum of Cancer Surgeons: Perspectives on Barriers to Surgical Care for Cancer Patients and Potential Solutions.

    Are, Chandrakanth / McMasters, Kelly M / Giuliano, Armando / Yanala, Ujwal / Balch, Charles / Anderson, Benjamin O / Berman, Russell / Audisio, Riccardo / Kovacs, Tibor / Savant, Dhairyasheel / Toprani, Rajendra / Amira, Gamal / Sallam, Ibrahim / Baek, Jeong Heum / Baek, Moo-Jun / Park, Do Joong / Beulo, Gregorio Quintero / Rocha, Enrique Bargallo / Said, Hector Martinez /
    Cheema, Muhammad / AliKhan, Abul / Mack, Lloyd / Chen, Gong / Quadros, Claudio Almeida / Reis, Tarcisio / de Castro Ribeiro, Heber Salvador / Zippel, Douglas / Ramirez, Augusto Leon / Seto, Yasuyuki / Yoshida, Kazuhiro / Mori, Masaki

    Annals of surgical oncology

    2019  Volume 26, Issue 6, Page(s) 1577–1582

    MeSH term(s) Attitude of Health Personnel ; Delivery of Health Care/standards ; Humans ; Neoplasms/surgery ; Surgeons/standards
    Language English
    Publishing date 2019-03-25
    Publishing country United States
    Document type Editorial
    ZDB-ID 1200469-8
    ISSN 1534-4681 ; 1068-9265
    ISSN (online) 1534-4681
    ISSN 1068-9265
    DOI 10.1245/s10434-019-07301-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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