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Cvetanović Kljakić A, Ocvirk M, Rutnik K, Košir IJ, Pavlić B, Mašković P, Mašković J, Teslić N, Stupar A, Uba AI, Zengin G. Exploring the composition and potential uses of four hops varieties through different extraction techniques. Food Chem 2024; 447:138910. [PMID: 38479143 DOI: 10.1016/j.foodchem.2024.138910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 02/20/2024] [Accepted: 02/28/2024] [Indexed: 04/10/2024]
Abstract
Hydrophilic, lipophilic extracts and essential oil of four hops varieties from Slovenia were examined in this study. Lipophilic extracts were obtained by supercritical extraction (SFE), while for hydrophilic extracts ultrasound and microwave extraction were employed. Essential oils were isolated by the hydrodistillation process. The lipophilic composition of essential oils and lipophilic extracts was determined by GC-MS analysis. Monoterpenes and sesquiterpene hydrocarbons were the most abundant class of compounds in oils (62.27-79.65 %), with myrcene being the most abundant constituent. Limonene and trans-caryophyllene were two terpenes determined in all essential oils while only trans-caryophyllene was detected in SFE samples. Antioxidant, antimicrobial, and cytotoxic activity, determined by applying in vitro assays, was more influenced by extraction technique than by varieties. Molecular docking was carried out to gain insight into the potential cancer protein targets BCL-2 and MMP9, whereby humulene epoxide II displayed good binding configuration within the cavities of the two proteins.
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Affiliation(s)
| | - Miha Ocvirk
- Slovenian Institute of Hop Research and Brewing, Cesta Žalskega Tabora 2, 3310 Žalec, Slovenia
| | - Ksenija Rutnik
- Slovenian Institute of Hop Research and Brewing, Cesta Žalskega Tabora 2, 3310 Žalec, Slovenia
| | - Iztok Jože Košir
- Slovenian Institute of Hop Research and Brewing, Cesta Žalskega Tabora 2, 3310 Žalec, Slovenia
| | - Branimir Pavlić
- University of Novi Sad, Faculty of Technology, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia
| | - Pavle Mašković
- University of Kragujevac, Faculty of Agriculture, Cara Dušana 34, Čačak, Serbia
| | - Jelena Mašković
- University of Kragujevac, Faculty of Agriculture, Cara Dušana 34, Čačak, Serbia
| | - Nemanja Teslić
- University of Novi Sad, Institute of Food Technology, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia
| | - Alena Stupar
- University of Novi Sad, Institute of Food Technology, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia
| | - Abdullahi Ibrahim Uba
- Department of Molecular Biology and Genetics, Istanbul AREL University, Istanbul 34537, Turkey
| | - Gökhan Zengin
- Department of Biology, Science Faculty, Selcuk University, 42130 Konya, Istanbul, Turkey
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Becker L, Boyer I, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD, Liebler DC, Marks JG, Shank RC, Slaga TJ, Snyder PW, Fiume M, Heldreth B. Safety Assessment of Hops as Used in Cosmetics. Int J Toxicol 2024; 43:5S-29S. [PMID: 38126727 DOI: 10.1177/10915818231221796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The Expert Panel for Cosmetic Ingredient Safety (Panel) assessed the safety of Humulus Lupulus (Hops) Extract (reported functions include antimicrobial agent and hair conditioning agent) and Humulus Lupulus (Hops) Oil (reported function is fragrance). The Panel reviewed the relevant data related to these ingredients. Because final product formulations may contain multiple botanicals, each containing the same constituents of concern, formulators are advised to be aware of these constituents and to avoid reaching levels that may be hazardous to consumers. For these ingredients, the Panel was concerned about the presence of 8-prenylnaringenin, β-myrcene, and quercetin in cosmetics, which could result in estrogenic effects, dermal irritation, and genotoxicity, respectively. Industry should use current good manufacturing practices to limit impurities and constituents of concern. The Panel concluded that Humulus Lupulus (Hops) Extract and Humulus Lupulus (Hops) Oil are safe in cosmetics in the present practices of use and concentration when formulated to be non-sensitizing.
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Affiliation(s)
- Lillian Becker
- Cosmetic Ingredient Review Former Scientific Analyst/Writer
| | - Ivan Boyer
- Cosmetic Ingredient Review Former Toxicologist
| | | | | | - Ronald A Hill
- Expert Panel for Cosmetic Ingredient Safety Former Member
| | | | | | - James G Marks
- Expert Panel for Cosmetic Ingredient Safety Former Member
| | - Ronald C Shank
- Expert Panel for Cosmetic Ingredient Safety Former Member
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Gregory ER, Bakhaider RF, Gomez GF, Huang R, Moser EAS, Gregory RL. Evaluating hop extract concentrations found in commercial beer to inhibit Streptococcus mutans biofilm formation. J Appl Microbiol 2022; 133:1333-1340. [PMID: 35598180 PMCID: PMC9543398 DOI: 10.1111/jam.15632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 03/25/2022] [Accepted: 05/17/2022] [Indexed: 11/29/2022]
Abstract
AIMS The purpose of this study was to compare the effect of hop extracts with diverse β-acid concentrations on Streptococcus mutans biofilm formation. METHODS AND RESULTS Ten different hop extracts, with α-acid concentrations similar to those found in commercial beer products and β-acid concentrations ranging from 2.6 to 8.1%, were added to distilled water to make standardized concentrations. S. mutans isolates were treated with hop extract dilutions varying from 1:2 to 1:256. The minimum inhibitory, minimum bactericidal, and minimum biofilm inhibitory concentrations were determined and the optical density was evaluated. Live/dead staining confirmed the bactericidal effects. Biofilm formation of several strains of S. mutans was significantly inhibited by hop extract dilutions of 1:2, 1:4, 1:8, 1:16, and 1:32. Strong negative correlations were observed between α- and β-acid concentrations of the hop extracts and S. mutans total growth and biofilm formation. CONCLUSIONS The use of hop extracts prepared similarly to commercial beer decreased S. mutans biofilm formation. SIGNIFICANCE AND IMPACT OF THE STUDY The inclusion of hops in the commercial beer products may provide beneficial health effects. Further studies are warranted to determine an effect in vivo on the development of dental caries.
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Affiliation(s)
- Eric R Gregory
- Department of Pharmacy Services, The University of Kansas Health System, Kansas City, KS, USA
| | - Renad F Bakhaider
- Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN, USA
| | - Grace F Gomez
- Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN, USA
| | - Ruijie Huang
- Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN, USA
| | - Elizabeth A S Moser
- Department of Biostatistics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Richard L Gregory
- Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN, USA
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Sun X, Xia T, Zhang S, Zhang J, Xu L, Han T, Xin H. Hops extract and xanthohumol ameliorate bone loss induced by iron overload via activating Akt/GSK3β/Nrf2 pathway. J Bone Miner Metab 2022; 40:375-388. [PMID: 35106609 DOI: 10.1007/s00774-021-01295-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 11/17/2021] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Osteoporosis is closely related to iron metabolism. This study aimed to investigate whether hops extract (HLE) and its active component xanthohumol (XAN) could ameliorate bone loss caused by iron overload, and explored its potential mechanism. MATERIALS AND METHODS Iron overload mice induced by iron dextran (ID) were used in vivo, and were treated with HLE and XAN for 3 months. Bone micro-structure and bone morphology parameters were determined by Micro-CT and TRAP staining. Bone metabolism markers and oxidation indexes in serum and bone tissue were evaluated. For in vitro experiment, bone formation indexes were determined. Moreover, the expression of key proteins in protein kinase B (Akt)/glycogen synthetase kinase 3β (GSK3β)/nuclear factor E2-related (Nrf2) pathway was evaluated by Western blotting. RESULTS HLE and XAN effectively improved the bone micro-structure of the femur in mice, altered bone metabolism biomarkers, and regulated the expression of proteins related to bone metabolism. Additionally, they significantly promoted cell proliferation, runt-related gene 2 (Runx2) expression, and increased ALP activity in ID-induced osteoblasts. Moreover, HLE and XAN markedly inhibited the increase of oxidative stress caused by iron overload in vivo and in vitro. Further studies showed that they significantly up-regulated the expression of p-Akt, p-GSK3β, nuclear-Nrf2, NAD(P)H: quinone oxidoreductase 1 (NQO1), and heme oxygenase-1 (HO-1) in ID-induced osteoblasts. CONCLUSION These findings indicated hops and xanthohumol could ameliorate bone loss induced by iron overload via activating Akt/GSK3β/Nrf2 pathway, which brought up a novel sight for senile osteoporosis therapy.
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Affiliation(s)
- Xiaolei Sun
- Department of Pharmacognosy, School of Pharmacy, Naval Medical University, 325 Guohe Road, Shanghai, 200433, China
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, 4655 Daxue Road, Jinan, 250355, China
| | - Tianshuang Xia
- Department of Pharmacognosy, School of Pharmacy, Naval Medical University, 325 Guohe Road, Shanghai, 200433, China
| | - Shiyao Zhang
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, 4655 Daxue Road, Jinan, 250355, China
| | - Jiabao Zhang
- Department of Pharmacognosy, School of Pharmacy, Naval Medical University, 325 Guohe Road, Shanghai, 200433, China
| | - Lingchuan Xu
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, 4655 Daxue Road, Jinan, 250355, China.
| | - Ting Han
- Department of Pharmacognosy, School of Pharmacy, Naval Medical University, 325 Guohe Road, Shanghai, 200433, China.
| | - Hailiang Xin
- Department of Pharmacognosy, School of Pharmacy, Naval Medical University, 325 Guohe Road, Shanghai, 200433, China.
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Zanardi MV, Gastiazoro MP, Kretzschmar G, Wober J, Vollmer G, Varayoud J, Durando M, Zierau O. AHR agonistic effects of 6-PN contribute to potential beneficial effects of Hops extract. Mol Cell Endocrinol 2022; 543:111540. [PMID: 34965452 DOI: 10.1016/j.mce.2021.111540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/14/2021] [Accepted: 12/23/2021] [Indexed: 10/19/2022]
Abstract
Hops (Humulus lupulus) is used as an alternative to hormone replacement therapy due to the phytoestrogen, 8-prenylnaringenin (8-PN). To examine the potential risks/benefits of hops extract and its compounds (8-PN and 6-prenylnaringenin, 6-PN), we aimed to evaluate the estrogen receptor α (ERα) and aryl hydrocarbon receptor (AHR) signaling pathways in human endometrial cancer cells. Hops extract, 8-PN and 6-PN showed estrogenic activity. Hops extract and 6-PN activated both ERα and AHR pathways. 6-PN increased the expression of the tumor suppressor gene (AHRR), and that of genes involved in the estrogen metabolism (CYP1A1, CYP1B1). Although 6-PN might activate the detoxification and genotoxic pathways of estrogen metabolism, hops extract as a whole only modulated the genotoxic pathway by an up-regulation of CYP1B1 mRNA expression. These data demonstrate the relevant role of 6-PN contained in the hops extract as potential modulator of estrogen metabolism due to its ERα and AHR agonist activity.
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Affiliation(s)
- María Victoria Zanardi
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina; Cátedra de Fisiología Humana, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina; Molecular Cell Physiology and Endocrinology, Institute of Zoology, Technical University Dresden, Dresden, Germany.
| | - María Paula Gastiazoro
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina; Cátedra de Fisiología Humana, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Georg Kretzschmar
- Molecular Cell Physiology and Endocrinology, Institute of Zoology, Technical University Dresden, Dresden, Germany
| | - Jannette Wober
- Molecular Cell Physiology and Endocrinology, Institute of Zoology, Technical University Dresden, Dresden, Germany
| | - Günter Vollmer
- Molecular Cell Physiology and Endocrinology, Institute of Zoology, Technical University Dresden, Dresden, Germany
| | - Jorgelina Varayoud
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina; Cátedra de Fisiología Humana, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Milena Durando
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina; Cátedra de Fisiología Humana, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Oliver Zierau
- Molecular Cell Physiology and Endocrinology, Institute of Zoology, Technical University Dresden, Dresden, Germany
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Fukuda T, Akiyama S, Takahashi K, Iwadate Y, Ano Y. Effect of non-alcoholic beer containing matured hop bitter acids on mood states in healthy adults: A single-arm pilot study. Nurs Health Sci 2021; 24:7-16. [PMID: 34741379 PMCID: PMC9300118 DOI: 10.1111/nhs.12898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 10/11/2021] [Accepted: 10/20/2021] [Indexed: 11/30/2022]
Abstract
This study aimed to investigate the effect of non-alcoholic beer containing matured hop bitter acids on mood states among healthy adults older than 20 years. This study was an open-label longitudinal intervention design in which each participant served as their control. For three weeks, we evaluated the effect of non-alcoholic beer containing 35 mg of matured hop bitter acids on mood, sleep quality, and work performance. The data of 97 participants (age range: 23-72 years, median age: 42) were analyzed. After the intervention, we found that matured hop bitter acids significantly improved total mood state, including anxiety, depression, fatigue, and vigor, compared with the baseline. Furthermore, sleep quality and absolute presenteeism were significantly improved after the intervention compared with the baseline. The present exploratory study suggested that 3-week supplementation with matured hop bitter acids improved mood and peripheral symptoms in persons of a wide range of ages. Although further investigation is needed, the findings suggested that non-alcoholic beer in daily life might become a choice for maintaining mood states. This article is protected by copyright. All rights reserved.
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Affiliation(s)
| | - Shiori Akiyama
- Kirin Central Institute, Kirin Holdings Company, Limited
| | | | - Yasuo Iwadate
- Department of Neurological Surgery, Chiba University Graduate School of Medicine
| | - Yasuhisa Ano
- Kirin Central Institute, Kirin Holdings Company, Limited
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Abstract
Adenosine receptors (ARs) have been involved in neurodegenerative diseases such as Alzheimer disease, where oxidative stress contributes to neurodegeneration and cell death. Therefore, there is increasing interest in developing antioxidative strategies to avoid or reduce neurodegeneration. We have previously described that different beer extracts modulate ARs and protect glioma and neuroblastoma cells from oxidative stress. The present work aimed to analyze the possible protective effect of hops (Humulus lupulus L.), a major component of beer, and xanthohumol on cell death elicited by oxidative stress and their modulation of ARs in rat C6 glioma and human SH-SY5Y neuroblastoma cells. Different extraction methods were employed in two hops varieties (Nugget and Columbus). Cell viability was determined by the XTT method in cells exposed to these hops extracts and xanthohumol. ARs were analyzed by radioligand binding and real-time PCR assays. Hops extract reverted the cell death observed under oxidative stress and modulated adenosine A1 and A2 receptors in both cell types. Xanthohumol was unable to revert the effect of oxidative stress in cell viability but it also modulated ARs similarly to hops. Therefore, healthy effects of beer described previously could be due, at least in part, to their content of hops and the modulation of ARs.
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Affiliation(s)
- Patricia Alonso
- Department of Inorganic, Organic and Biochemistry. Faculty of Chemical and Technological Sciences, School of Medicine of Ciudad Real, Regional Center of Biomedical Research (CRIB), Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - José L. Albasanz
- Department of Inorganic, Organic and Biochemistry. Faculty of Chemical and Technological Sciences, School of Medicine of Ciudad Real, Regional Center of Biomedical Research (CRIB), Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Mairena Martín
- Department of Inorganic, Organic and Biochemistry. Faculty of Chemical and Technological Sciences, School of Medicine of Ciudad Real, Regional Center of Biomedical Research (CRIB), Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
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Su X, Yin Y. Aroma characterization of regional Cascade and Chinook hops (Humulus lupulus L.). Food Chem 2021; 364:130410. [PMID: 34237617 DOI: 10.1016/j.foodchem.2021.130410] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 06/01/2021] [Accepted: 06/16/2021] [Indexed: 11/17/2022]
Abstract
Aroma compounds in Cascade and Chinook hops harvested from multiple Virginia locations were identified by gas chromatography-mass spectrometry-olfactometry (GC-MS-O) and aroma extract dilution analysis (AEDA). Selected aroma compounds were quantitated by combination of stable isotope dilution analysis (SIDA) and standard addition method (SAM). A total of 33 aroma-active compounds were detected in five samples with β-myrcene, methyl octanoate, geraniol and linalool being the predominant compounds based on their high flavor dilution (FD) factors and odor activity values (OAVs). L-Calamenene and germacrene B was the major characteristic component unique to Cascade and Chinook variety, respectively. Principal component analysis (PCA) showed distinctive aroma profiles for all samples except for Blacksburg and Petersburg Cascade. Hierarchical cluster analysis (HCA) reflected the higher contents of most aroma-active compounds in Meadowview Cascade and Chinook when compared to their counterparts. The significant variations suggested the potential influences of environmental factors and agronomic practices on hop aroma quality.
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Affiliation(s)
- Xueqian Su
- Department of Food Science and Technology, Virginia Polytechnic Institute and State University, 1230 Washington Street SW, Blacksburg, VA 24061, USA.
| | - Yun Yin
- Department of Food Science and Technology, Virginia Polytechnic Institute and State University, 1230 Washington Street SW, Blacksburg, VA 24061, USA.
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Abdi F, Rahnemaei FA, Roozbeh N, Pakzad R. Impact of phytoestrogens on treatment of urogenital menopause symptoms: A systematic review of randomized clinical trials. Eur J Obstet Gynecol Reprod Biol 2021; 261:222-235. [PMID: 33962824 DOI: 10.1016/j.ejogrb.2021.03.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 03/08/2021] [Accepted: 03/28/2021] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Menopause symptoms affect the various dimensions of women's lives and they can lead to reduction of their quality of life. Phytoestrogens can be used as an approach to diminish these symptoms. The aim of this systematic review was to investigate the effect of phytoestrogens on the treatment of urogenital menopause symptoms. STUDY DESIGN PubMed, EMBASE, Web of Science, Cochrane library,Scopus and ProQuest were systematically searched from 2000-2020. All randomized clinical trials were included. The quality of the selected papers was evaluated by the CONSORT checklist. RESULTS 33 eligible high-quality papers were reviewed. Various forms of phytoestrogens such as Pueraria Mirifica, fennel, Hop plant(Humuluslupulus L.), Glycine Max (L.) Merr, soy, red clover, black cohosh, ginsing, cimicifugaracemosa, genistein, diadzein, glycitein and isoflavone in the form of oral capsules and pill, food supplement, enriched powder, vaginal gel, cream and suppository could improve menopausal urogenital symptoms. The recovery rate in vaginal use of these phytoestrogens was greater than other consumptions. CONCLUSIONS After using a variety of phytoestrogens in different forms indicators of urogenital atrophy and urinary disorders improved and women's sexual function improved after treatment. The use of phytoestrogens as a safe, low-risk compared to hormone therapy and almost accessible method for women can relieve urogenital symptoms and promote the sexual satisfaction and quality of life.
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Affiliation(s)
- Fatemeh Abdi
- Assistant Professor, School of nursing and midwifery, Alborz University of Medical Sciences, Karaj, Iran
| | - Fatemeh Alsadat Rahnemaei
- Student Research Committee, Nursing and Midwifery Faculty, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Nasibeh Roozbeh
- Mother and Child Welfare Research Center, Hormozgan Universiy of Medical Sciences, BandarAbbas, Iran
| | - Reza Pakzad
- Faculty of Health, Ilam University of Medical Sciences, Ilam, Iran
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Chrisfield BJ, Hopfer H, Elias RJ. Impact of copper-based fungicides on the antioxidant quality of ethanolic hop extracts. Food Chem 2021; 355:129551. [PMID: 33799235 DOI: 10.1016/j.foodchem.2021.129551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 03/04/2021] [Accepted: 03/04/2021] [Indexed: 10/21/2022]
Abstract
Hops contain a variety of compounds possessing antioxidant capacity including phenolic and polyphenolic compounds as well as α- and β- acids. These compounds may contribute to the oxidative stability of beer during brewing and storage. Hop plants may be treated with copper-based fungicides (CBFs) which have been shown to increase the total copper content of harvested hop cones; however, copper ions are well known to catalyze the generation of reactive oxygen species production in beer and may negatively impact its oxidative stability. Increased copper content in CBF-treated hops has been previously shown to have deleterious effects on the aroma quality of hops and beer. The impact of CBFs on the antioxidant content and quality of hops has not been previously investigated. In this study, ethanolic extracts of CBF-treated hops are evaluated for their metal content and antioxidant quality in order to determine whether excess copper from CBF treatment negatively impacts their antioxidant capacity.
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Affiliation(s)
- Benjamin J Chrisfield
- Department of Food Science, College of Agricultural Sciences, The Pennsylvania State University, University Park, PA 16802, United States
| | - Helene Hopfer
- Department of Food Science, College of Agricultural Sciences, The Pennsylvania State University, University Park, PA 16802, United States
| | - Ryan J Elias
- Department of Food Science, College of Agricultural Sciences, The Pennsylvania State University, University Park, PA 16802, United States.
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Abstract
Sleep disorders have a high prevalence both in the general population and especially in specific populations such older adults and oncologic patients. Impacting on quality of life, they often translate in drug prescription, with consequent increased risk of drug-drug interactions and adverse drug reactions. In the last years several products derived from plants have been developed with the aim of treating insomnia with lower risk of side effects. Despite several studies have been performed with this aim, the available evidence is inconclusive, and reviews summarizing the most recent evidences on the effectiveness of plant-derived products in treating insomnia are lacking.This narrative review aims at summarizing the evidences of the mechanism of action, effectiveness and safety of the most commonly used plant-derived products for the treatment of sleep disorders (Valerian, Lemon balm, Passionflower, Chamomile, Hops, and Jujube).
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Affiliation(s)
- Diana Lelli
- Area di Geriatria, Università Campus Bio-Medico di Roma, Roma, Italy.
| | - Livio Cortese
- Area di Geriatria, Università Campus Bio-Medico di Roma, Roma, Italy
| | - Claudio Pedone
- Area di Geriatria, Università Campus Bio-Medico di Roma, Roma, Italy
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Macías-Rodríguez RU, Ruiz-Margáin A, Román-Calleja BM, Espin-Nasser ME, Flores-García NC, Torre A, Galicia-Hernández G, Rios-Torres SL, Fernández-del-Rivero G, Orea-Tejeda A, Lozano-Cruz OA. Effect of non-alcoholic beer, diet and exercise on endothelial function, nutrition and quality of life in patients with cirrhosis. World J Hepatol 2020; 12:1299-1313. [PMID: 33442456 PMCID: PMC7772724 DOI: 10.4254/wjh.v12.i12.1299] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/29/2020] [Accepted: 10/29/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The implementation of nutritional strategies targeting several variables at once could benefit patients with cirrhosis. Non-alcoholic beer has different compounds that exert antioxidant, anti-inflammatory and nutritional properties. AIM To evaluate the effect of diet + exercise and non-alcoholic beer on nutritional status, endothelial function and quality of life in patients with cirrhosis. METHODS In this randomized open clinical trial, patients with cirrhosis were randomized into two groups: The intervention (non-alcoholic beer + diet + exercise) and control (water + diet + exercise) group. Treatment consisted of 330 mL non-alcoholic beer/day or the same amount of water, plus an individualized dietary plan and an exercise program with a pedometer-based bracelet to reach at least 5000 steps/d and > 2500 above the baseline during 8 wk. Endothelial function (flow-mediated dilation, plethysmography), biochemical and nutritional variables and quality of life (CLDQ) were evaluated. RESULTS Forty-three patients were included in the study, 21 in the control group and 22 in the intervention group. The mean age was 53.5 ± 7.8 years, 60% were women, the median MELD score was 8 (7-10) and most patients were Child-Pugh A (88%). Adherence to the interventions was > 90% in both groups, there were no adverse events and all biochemical parameters remained stable in both groups. Endothelial function improved in both groups. All measured nutritional parameters improved in the intervention group, compared to only 2 in the control group and quality of life improved in both groups; however, more domains improved in the intervention group. CONCLUSION The intervention consisting of non-alcoholic beer, diet and exercise seems to be safe and well tolerated in patients with cirrhosis, and shows improvement in nutritional status, endothelial function, and quality of life. These results need to be further confirmed.
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Affiliation(s)
- Ricardo U Macías-Rodríguez
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
- Liver Fibrosis and Nutrition Lab (LFN-Lab), MICTLÁN Network: Mechanisms of Liver Injury, Cell Death and Translational Nutrition in Liver Diseases-Research Network, Mexico City 14080, Mexico.
| | - Astrid Ruiz-Margáin
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
| | - Berenice M Román-Calleja
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
| | - May E Espin-Nasser
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
| | - Nayelli C Flores-García
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
| | - Aldo Torre
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
| | - Gretel Galicia-Hernández
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
| | - Silvia L Rios-Torres
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
| | - Gabriela Fernández-del-Rivero
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
| | - Arturo Orea-Tejeda
- Department of Cardiology, Instituto Nacional de Enfermedades Respiratorias, Mexico City 14080, Mexico
| | - Oscar A Lozano-Cruz
- Department of Internal Medicine, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
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13
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Duarte LM, Amorim TL, Grazul RM, de Oliveira MAL. Differentiation of aromatic, bittering and dual-purpose commercial hops from their terpenic profiles: An approach involving batch extraction, GC-MS and multivariate analysis. Food Res Int 2020; 138:109768. [PMID: 33292948 DOI: 10.1016/j.foodres.2020.109768] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 09/08/2020] [Accepted: 09/29/2020] [Indexed: 01/13/2023]
Abstract
Terpenes are one of the main classes of compounds in hops (Humulus lupulus, L). They play an important role in brewing due to their central function, which is related to beer aroma. A screening of terpenes in several commercial hop varieties was carried out by gas chromatography coupled to mass spectrometry after employing a simple, straightforward and high throughput extraction method. A single batch extraction, using hexane as solvent, was employed to obtain the terpenic fraction of the hop samples. Nineteen terpenes were identified in analyzed samples with β-myrcene (2.22-45.30%), α-humulene (20.20-67.64%), and β-caryophyllene (9.97-24.62%) being the major terpenes in all samples. The studied system was multivariate modeled by principal component analysis. Based on the proposed approach, it was possible to correlate the terpenic hop profiles to their specific purpose in the brewing industry and to distinguish aromatic hops (high α-humulene content), bittering hops (high β-myrcene content), and dual-purpose hops (more complex and intermediate terpenic profile) among the samples.
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Affiliation(s)
- Lucas Mattos Duarte
- Grupo de Química Analítica e Quimiometria (GQAQ), Departamento de Química, Universidade Federal de Juiz de Fora, 36036900 Juiz de Fora, MG, Brazil; Departamento de Química Analítica, Instituto de Química, Universidade Federal Fluminense, 24020-141 Niterói, RJ, Brazil
| | - Tatiane Lima Amorim
- Grupo de Química Analítica e Quimiometria (GQAQ), Departamento de Química, Universidade Federal de Juiz de Fora, 36036900 Juiz de Fora, MG, Brazil
| | - Richard Michael Grazul
- Laboratório de Pesquisa em Química Medicinal e Produtos Naturais, Departamento de Química, Universidade Federal de Juiz de Fora, 36036900 Juiz de Fora, MG, Brazil
| | - Marcone Augusto Leal de Oliveira
- Grupo de Química Analítica e Quimiometria (GQAQ), Departamento de Química, Universidade Federal de Juiz de Fora, 36036900 Juiz de Fora, MG, Brazil.
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14
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Šrédl K, Prášilová M, Svoboda R, Severová L. Hop production in the Czech Republic and its international aspects. Heliyon 2020; 6:e04371. [PMID: 32685718 PMCID: PMC7358739 DOI: 10.1016/j.heliyon.2020.e04371] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 02/10/2020] [Accepted: 06/29/2020] [Indexed: 11/17/2022] Open
Abstract
Hop-growing has had a long tradition in the Czech Republic, and it remains in the interest of the Czech economy to further develop this agricultural sector. With an almost one-tenth share of the harvest, the Czech Republic is the third largest producer of aroma hops in the world after Germany and the US, which together account for over two-thirds of the hop market. The purpose of this article is to describe the current state of the Czech and global markets in hops, and the position of the dominant company, Chmelarstvi, druzstvo Zatec, on this market. Towards the end of 2017, the area of hop fields in the Czech Republic reached 4,945 ha, which is the most in the last 7 years. Year-over-year, this represents an increase of 3.4%. The increase was caused by the current demand for quality Czech hops and the weak European harvest in 2015. Thus, the storehouses emptied, and breweries' stores all over the world, to which 80% of domestic hop production is supplied, ran out. Since then, demand and prices have increased to a level that has begun to cover the costs of hop production. This has also meant that investments in hop production have increased. With the increasing area of hop fields in the Czech Republic, hop growers have to deal with a significant problem, which is the unavailability of workers.
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Affiliation(s)
- Karel Šrédl
- Faculty of Economics and Management, Czech University of Life Sciences Prague, Kamýcká 129, Prague 6, Suchdol, 165 00, Czech Republic
| | - Marie Prášilová
- Faculty of Economics and Management, Czech University of Life Sciences Prague, Kamýcká 129, Prague 6, Suchdol, 165 00, Czech Republic
| | - Roman Svoboda
- Faculty of Economics and Management, Czech University of Life Sciences Prague, Kamýcká 129, Prague 6, Suchdol, 165 00, Czech Republic
| | - Lucie Severová
- Faculty of Economics and Management, Czech University of Life Sciences Prague, Kamýcká 129, Prague 6, Suchdol, 165 00, Czech Republic
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15
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Abstract
Nutrition-related noncommunicable diseases (NR-NCDs) such as cardiovascular disease and type 2 diabetes both negatively impact the quality of life of many individuals and generate a substantial burden on society, demonstrating a need for intervention. Phytochemicals are investigated as a potential approach for combating NR-NCDs, and those found in hops have gained increased attention in recent decades. Hops, the strobile of the plant Humulus lupulus, are grown primarily for the brewing industry as they confer taste and increased shelf-life. The bitter acids represent the main compounds of interest for improving beer quality. Additionally, bitter acids as well as the prenylated chalcone xanthohumol, exhibit a wide range of health beneficial properties. This review summarizes those beneficial effects of bitter acids and xanthohumol on NR-NCDs, including inflammatory and immune diseases, obesity and metabolic disorders, as well as cancer prevention.
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Affiliation(s)
| | - Mei-Jun Zhu
- School of Food Science, Washington State University, Pullman, Washington, USA
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16
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Anderson HE, Santos IC, Hildenbrand ZL, Schug KA. A review of the analytical methods used for beer ingredient and finished product analysis and quality control. Anal Chim Acta 2019; 1085:1-20. [PMID: 31522723 DOI: 10.1016/j.aca.2019.07.061] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 07/28/2019] [Accepted: 07/29/2019] [Indexed: 12/30/2022]
Abstract
Beer is an incredibly complex beverage containing more than 3000 different compounds, including carbohydrates, proteins, ions, microbes, organic acids, and polyphenols, among others. Beer becomes even more complex during storage, for over time it may undergo chemical changes that negatively affect the flavor, aroma, and appearance. Thus, it can be expected that maintaining the quality of beer throughout its lifetime is a difficult task. Since it is such a popular drink throughout the world, being familiar with proper analytical techniques for beer evaluation is useful for researchers and brewers. These techniques include, but are not limited to, gas chromatography, liquid chromatography, matrix assisted laser desorption/ionization, capillary electrophoresis, mass spectrometry, ultraviolet-visible spectroscopy, and flame ionization detection. This review aims to summarize the various ingredients and components of beer, discuss how they affect the finished product, and present some of the analytical methods used for quality control and understanding the formation of chemicals in beer during the brewing process.
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Affiliation(s)
- Hailee E Anderson
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, 700 Planetarium Place, Arlington, TX, 76019, USA
| | - Ines C Santos
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, 700 Planetarium Place, Arlington, TX, 76019, USA; Affiliate of Collaborative Laboratories for Environmental Analysis and Remediation, The University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Zacariah L Hildenbrand
- Affiliate of Collaborative Laboratories for Environmental Analysis and Remediation, The University of Texas at Arlington, Arlington, TX, 76019, USA; Inform Environmental, LLC, 6060 N. Central Expressway, Suite 500, Dallas, TX, 75206, USA
| | - Kevin A Schug
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, 700 Planetarium Place, Arlington, TX, 76019, USA; Affiliate of Collaborative Laboratories for Environmental Analysis and Remediation, The University of Texas at Arlington, Arlington, TX, 76019, USA.
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17
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Schulz C, Chiheb C, Pischetsrieder M. Quantification of co-, n-, and ad-lupulone in hop-based dietary supplements and phytopharmaceuticals and modulation of their contents by the extraction method. J Pharm Biomed Anal 2019; 168:124-132. [PMID: 30807916 DOI: 10.1016/j.jpba.2019.02.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 02/13/2019] [Accepted: 02/14/2019] [Indexed: 12/28/2022]
Abstract
Hop β-bitter acids (lupulones) are health-beneficial components of Humulus lupulus L. showing, for example, antidepressant-like effects in vitro. Despite of the widespread use of hops for medicinal purposes, the concentrations of lupulones in hop-based drugs have not been reported yet. The present study developed, validated, and applied a method with external calibration, which allows for the first time separate quantification of co-, n-, and ad-lupulone in hop-based drugs by UHPLC‒DAD. Concentrations between 'not detectable' and 2.7 mg/mL co-lupulone, 2.2 mg/mL nlupulone, or 0.7 mg/mL ad-lupulone were measured in nine different commercial dietary supplements and phytopharmaceuticals. Only one hop tincture contained sufficient lupulone to possibly exert potential antidepressant effects. Aiming for products with increased lupulone content, the extraction efficiency of different solvents was investigated. Complete extraction of lupulones from raw hops was achieved by organic solvents including methanol and ethanol, whereas aqueous mixtures resulted in low recovery. These results indicate that adapted extraction conditions may result in more effective hops products.
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Affiliation(s)
- Carolin Schulz
- Food Chemistry, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058, Erlangen, Germany
| | - Chafia Chiheb
- Food Chemistry, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058, Erlangen, Germany
| | - Monika Pischetsrieder
- Food Chemistry, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058, Erlangen, Germany.
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18
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Venturelli S, Niessner H, Sinnberg T, Berger A, Burkard M, Urmann C, Donaubauer K, Böcker A, Leischner C, Riepl H, Frank J, Lauer UM, Garbe C, Busch C. 6- and 8-Prenylnaringenin, Novel Natural Histone Deacetylase Inhibitors Found in Hops, Exert Antitumor Activity on Melanoma Cells. Cell Physiol Biochem 2018; 51:543-556. [PMID: 30458450 DOI: 10.1159/000495275] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 11/12/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Prenylnaringenins are natural prenylflavonoids with anticancer properties. However, the underlying mechanisms have not been elucidated yet. Here we report a novel mode of action of 6- and 8-prenylnaringenin (PN) on human melanoma cells: Inhibition of cellular histone deacetylases (HDACs). METHODS We performed in silico and in vitro analyses using 6-PN or 8-PN to study a possible interaction of 6-PN or 8-PN with HDAC as well as Western blot and FACS analyses, real-time cell proliferation and cell viability assays to assess the impact of 6-PN and 8-PN on human metastatic melanoma cells. RESULTS In silico, 6-PN and 8-PN fit into the binding pocket of HDAC2, 4, 7 and 8, binding to the zinc ion of their catalytic center that is essential for enzymatic activity. In vitro, 100 µmol/L of 6-PN or 8-PN inhibited all 11 conserved human HDAC of class I, II and IV. In clinical oncology HDAC inhibitors are currently investigated as new anticancer compounds. In line, treatment of SK-MEL-28 cells with 6-PN or 8-PN induced a hyperacetylation of histone complex H3 within 2 h. Further, 6-PN or 8-PN mediated a prominent, dose-dependent reduction of cellular proliferation and viability of SK-MEL-28 and BLM melanoma cells. This effect was apoptosis-independent and accompanied by down-regulation of mTOR-specific pS6 protein via pERK/pP90 in SK-MEL-28 cells. CONCLUSION The identification of a broad inhibitory capacity of 6-PN and 8-PN for HDAC enzymes with antiproliferative effects on melanoma cells opens the perspective for clinical application as novel anti-melanoma drugs and the usage as innovative lead structures for chemical modification to enhance pharmacology or inhibitory activities.
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Affiliation(s)
- Sascha Venturelli
- Institute of Physiology, Department of Vegetative and Clinical Physiology, University of Tuebingen, Tuebingen, Germany
| | - Heike Niessner
- Division of Dermato-Oncology, Department of Dermatology and Allergology, University of Tuebingen, Tuebingen, Germany
| | - Tobias Sinnberg
- Division of Dermato-Oncology, Department of Dermatology and Allergology, University of Tuebingen, Tuebingen, Germany
| | - Alexander Berger
- Institute of Physiology, Department of Vegetative and Clinical Physiology, University of Tuebingen, Tuebingen, Germany
| | - Markus Burkard
- Institute of Physiology, Department of Vegetative and Clinical Physiology, University of Tuebingen, Tuebingen, Germany
| | - Corinna Urmann
- Hochschule Weihenstephan-Triesdorf, TUM Campus Straubing, Division of Organic and Analytic Chemistry, Straubing, Germany
| | - Kathrin Donaubauer
- Department of Physiology, Technical University of Munich, Munich, Germany
| | | | - Christian Leischner
- Institute of Physiology, Department of Vegetative and Clinical Physiology, University of Tuebingen, Tuebingen, Germany
| | - Herbert Riepl
- Hochschule Weihenstephan-Triesdorf, TUM Campus Straubing, Division of Organic and Analytic Chemistry, Straubing, Germany
| | - Jan Frank
- Institute of Biological Chemistry and Nutrition, University of Hohenheim, Stuttgart, Germany
| | - Ulrich M Lauer
- Department of Internal Medicine VIII, University Hospital Tuebingen, Tuebingen, Germany.,German Cancer Consortium (DKTK), DKFZ partner site Tuebingen, Tuebingen, Germany
| | - Claus Garbe
- Division of Dermato-Oncology, Department of Dermatology and Allergology, University of Tuebingen, Tuebingen, Germany
| | - Christian Busch
- Division of Dermato-Oncology, Department of Dermatology and Allergology, University of Tuebingen, Tuebingen,
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19
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Machado JC, Faria MA, Melo A, Martins ZE, Ferreira IMPLVO. Modeling of α-acids and xanthohumol extraction in dry-hopped beers. Food Chem 2018; 278:216-222. [PMID: 30583365 DOI: 10.1016/j.foodchem.2018.11.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 11/08/2018] [Accepted: 11/09/2018] [Indexed: 10/27/2022]
Abstract
The practice of dry-hopping has been used by the brewing industry to obtain beers with increased contents of flavor and bitterness compounds. Notwithstanding this, other compounds such as α-acids (AA) and xhanthohumol (XN) are co-extracted influencing the final characteristics of the beer, particularly its beneficial bioactivity. In this context a model for the understanding of AA and XN extraction by dry-hopping is proposed. The varieties Chinook (CHI), East Kent Goldings (EKG) and Tettnanger (TET) were assayed and robust statistical approaches were applied for data interpretation. Concentration of AA in beers post-maturation reached values higher than 20 mg/L using 2.8 g/L of CHI hops and 10 days of maturation. For XN, a similar behavior was verified. The maximum efficiency of AA and XN extraction (transfer rate) were reached at 13.5 days with dose rates of 147 and 13.9 mg/L, respectively.
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Affiliation(s)
- Júlio C Machado
- LAQV/REQUIMTE/Departamento de Ciências Químicas, Laboratório de Bromatologia e Hidrologia, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Miguel A Faria
- LAQV/REQUIMTE/Departamento de Ciências Químicas, Laboratório de Bromatologia e Hidrologia, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Armindo Melo
- LAQV/REQUIMTE/Departamento de Ciências Químicas, Laboratório de Bromatologia e Hidrologia, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; Departamento de Saúde Ambiental, Instituto Nacional de Saúde Doutor Ricardo Jorge, Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal.
| | - Zita E Martins
- LAQV/REQUIMTE/Departamento de Ciências Químicas, Laboratório de Bromatologia e Hidrologia, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Isabel M P L V O Ferreira
- LAQV/REQUIMTE/Departamento de Ciências Químicas, Laboratório de Bromatologia e Hidrologia, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
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20
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Leonida MD, Belbekhouche S, Benzecry A, Peddineni M, Suria A, Carbonnier B. Antibacterial hop extracts encapsulated in nanochitosan matrices. Int J Biol Macromol 2018; 120:1335-1343. [PMID: 30189279 DOI: 10.1016/j.ijbiomac.2018.09.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 08/14/2018] [Accepted: 09/02/2018] [Indexed: 11/26/2022]
Abstract
Hops and the components extracted from them are well known antibacterial agents used in beers and as food preservatives, in formulations for topical applications on their own or together with other antimicrobial agents, in hormone replacement therapy, as antioxidants, tumor development antagonists, and angiogenesis inhibitors. Their shortcomings: very low bioavailability, bitter taste, and susceptibility to oxidative decomposition have limited their applications. We propose nanosized chitosan, an inexpensive, readily available biopolymer with a broad spectrum of antibacterial activity, as carrier for lupulone (L) and xanthohumol (X), two components of hops. Chitosan nanoparticles (CNP) and chitosan-based nanocomposites encapsulating lupulone (CNL) and xanthohumol (CNX) were prepared by ionotropic gelation using sodium tripolyphosphate (TPP) as crosslinker. Different preparative ratios and conditions were investigated and the nanoparticles obtained were characterized by FTIR, colloidal titration, size, zeta potential, and antimicrobial activity. The kinetics of the release of L/X from composites was studied in vitro. All the nanoparticles were active against several Gram-positive, Gram-negative, and Candida strains. Synergistic interactions were observed in all cases, although hops are known mainly for their activity against Gram-positive bacteria. All nanoparticles showed good stability over several months.
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Affiliation(s)
- Mihaela D Leonida
- School of Natural Science, Fairleigh Dickinson University, Teaneck, NJ, USA.
| | | | - Alice Benzecry
- School of Natural Science, Fairleigh Dickinson University, Teaneck, NJ, USA
| | | | - Andrea Suria
- Dept. of Molecular and Cell Biology, Univ. of Connecticut, Storrs, CT, USA
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21
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Merino P, Santos-López JA, Mateos CJ, Meseguer I, Garcimartín A, Bastida S, Sánchez-Muniz FJ, Benedí J, González-Muñoz MJ. Can nonalcoholic beer, silicon and hops reduce the brain damage and behavioral changes induced by aluminum nitrate in young male Wistar rats? Food Chem Toxicol 2018; 118:784-794. [PMID: 29886234 DOI: 10.1016/j.fct.2018.06.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 05/29/2018] [Accepted: 06/03/2018] [Indexed: 12/30/2022]
Abstract
Aluminum consumption has been associated with various neurodegenerative diseases. Previous studies suggest that regular beer intake reverses the pro-oxidant and inflammatory statuses induced by aluminum nitrate intoxication. This paper aims to evaluate the in vitro antioxidant capacity and acetylcholinesterase inhibitory activity of non-alcoholic beer (NABeer), silicon or hops, as well as their effect on animal behavior (e.g. curiosity, immobilization, rearing, grooming, swimming) and brain antioxidant enzyme (activity and gene expression) and anti-inflammatory status in aluminum nitrate intoxicated rats. Male Wistar rats were divided into five groups: 1) Control, 2) Aluminum nitrate (450 μg/kg/day), 3) Aluminum nitrate plus NABeer, 4) Aluminum nitrate plus hops, and 5) Aluminum nitrate plus silicon. Hops showed the highest in vitro antioxidant capacity and silicon the highest anticholinesterase activity. In the Aluminum group the brain aluminum/silicon ratio increased with impairment of brain antioxidant and inflammatory statuses. NABeer, silicon and hops block the negative effect on the in vivo antioxidant and inflammatory statuses induced by Aluminum nitrate and improve swimming and rearing behavioral tests. The various positive results suggest that NABeer is useful as a functional multi-target drink in the prevention of some neurodegenerative events caused by aluminum intoxication. More studies are required to conclude present results.
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Affiliation(s)
- P Merino
- Departamento de Ciencias Biomédicas, Unidad Docente de Toxicología, Facultad de Farmacia, Universidad de Alcalá, Madrid, Spain
| | - J A Santos-López
- Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain(2)
| | - C J Mateos
- Departamento de Ciencias Biomédicas, Unidad Docente de Toxicología, Facultad de Farmacia, Universidad de Alcalá, Madrid, Spain
| | - I Meseguer
- Departamento de Ciencias Biomédicas, Unidad Docente de Toxicología, Facultad de Farmacia, Universidad de Alcalá, Madrid, Spain
| | - A Garcimartín
- Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain(2)
| | - S Bastida
- Departamento de Nutrición y Ciencia de los alimentos, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
| | - F J Sánchez-Muniz
- Departamento de Nutrición y Ciencia de los alimentos, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
| | - J Benedí
- Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain(2).
| | - M J González-Muñoz
- Departamento de Ciencias Biomédicas, Unidad Docente de Toxicología, Facultad de Farmacia, Universidad de Alcalá, Madrid, Spain.
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22
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Bazan-Wozniak A, Nowicki P, Pietrzak R. Production of new activated bio-carbons by chemical activation of residue left after supercritical extraction of hops. Environ Res 2018; 161:456-463. [PMID: 29216492 DOI: 10.1016/j.envres.2017.11.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 11/20/2017] [Accepted: 11/23/2017] [Indexed: 05/26/2023]
Abstract
A technology of activated bio-carbons production from the residue left after supercritical extraction of hops is described. The effect of the variant of chemical activation and impregnation ratio on the physicochemical properties as well as sorption capacity towards toxic gas of acidic character (nitrogen dioxide), basic organic dye (aqueous solution of methylene blue - MB) and iodine was investigated. The materials obtained were activated bio-carbons of well-developed surface area ranging between 897 and 1095m2/g, showing clearly acidic character of the surface. The sorption tests results proved that chemical activation of the residue left after supercritical extraction of hops allows obtaining activated bio-carbons with very high sorption capacity towards nitrogen dioxide, reaching to 77.2 and 155.3mg/g in dry and wet conditions, respectively. The maximum sorption capacity of the adsorbents towards methylene blue was 328.75mg/g, while towards iodine 1815mg/g. The equilibrium data for aqueous solution of MB were analyzed by the Langmuir and Freundlich models, whereas the kinetics of the adsorption process was studied using pseudo-first and second-order models. According to the obtained data, the adsorption of MB from aqueous solution is better described by Langmuir model and pseudo-second order kinetic model.
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Affiliation(s)
- Aleksandra Bazan-Wozniak
- Adam Mickiewicz University in Poznań, Faculty of Chemistry, Laboratory of Applied Chemistry, Umultowska 89b, 61-614 Poznań, Poland
| | - Piotr Nowicki
- Adam Mickiewicz University in Poznań, Faculty of Chemistry, Laboratory of Applied Chemistry, Umultowska 89b, 61-614 Poznań, Poland
| | - Robert Pietrzak
- Adam Mickiewicz University in Poznań, Faculty of Chemistry, Laboratory of Applied Chemistry, Umultowska 89b, 61-614 Poznań, Poland.
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23
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Auerswald K, Fischer FK, Kistler M, Treisch M, Maier H, Brandhuber R. Behavior of farmers in regard to erosion by water as reflected by their farming practices. Sci Total Environ 2018; 613-614:1-9. [PMID: 28892722 DOI: 10.1016/j.scitotenv.2017.09.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 08/30/2017] [Accepted: 09/01/2017] [Indexed: 06/07/2023]
Abstract
The interplay between natural site conditions and farming raises erosion by water above geological background levels. We examined the hypothesis that farmers take erosion into account in their farming decisions and switch to farming practices with lower erosion risk the higher the site-specific hazard becomes. Erosion since the last tillage was observed from aerial orthorectified photographs for 8100 fields belonging to 1879 farmers distributed across Bavaria (South Germany) and it was modeled by the Universal Soil Loss Equation using highly detailed input data (e.g., digital terrain model with 5×5m2 resolution, rain data with 1×1km2 and 5min resolution, crop and cropping method from annual field-specific data from incentive schemes). Observed and predicted soil loss correlated closely, demonstrating the accuracy of this method. The close correlation also indicted that the farmers could easily observe the degree of recent erosion on their fields, even without modelling. Farmers clearly did not consider erosion in their decisions. When natural risk increased, e.g. due to steeper slopes, they neither grew crops with lower erosion potential, nor reduced field size, nor used contouring. In addition, they did not compensate for the cultivation of crops with higher erosion potential by using conservation techniques like mulch tillage or contouring, or by reducing field size. Only subsidized measures, like mulch tillage or organic farming, were applied but only at the absolute minimum that was necessary to obtain subsidies. However, this did not achieve the reduction in erosion that would be possible if these measures had been fully applied. We conclude that subsidies may be an appropriate method of reducing erosion but the present weak supervision, which assumes that farmers themselves will take erosion into account and that subsidies are only needed to compensate for any disadvantages caused by erosion-reducing measures, is clearly not justified.
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Affiliation(s)
- Karl Auerswald
- Technical University of Munich, Lehrstuhl für Grünlandlehre, Alte Akademie 12, 85354 Freising, Germany.
| | - Franziska K Fischer
- Technical University of Munich, Lehrstuhl für Grünlandlehre, Alte Akademie 12, 85354 Freising, Germany; Bavarian State Research Center for Agriculture, Lange Point 6, 85354 Freising, Germany; Deutscher Wetterdienst, Außenstelle Weihenstephan, Alte Akademie 16, 85354 Freising, Germany
| | - Michael Kistler
- Bavarian State Research Center for Agriculture, Lange Point 6, 85354 Freising, Germany
| | - Melanie Treisch
- Bavarian State Research Center for Agriculture, Lange Point 6, 85354 Freising, Germany
| | - Harald Maier
- Deutscher Wetterdienst, Außenstelle Weihenstephan, Alte Akademie 16, 85354 Freising, Germany
| | - Robert Brandhuber
- Bavarian State Research Center for Agriculture, Lange Point 6, 85354 Freising, Germany
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Progar V, Jakše J, Štajner N, Radišek S, Javornik B, Berne S. Comparative transcriptional analysis of hop responses to infection with Verticillium nonalfalfae. Plant Cell Rep 2017; 36:1599-1613. [PMID: 28698905 PMCID: PMC5602066 DOI: 10.1007/s00299-017-2177-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 07/04/2017] [Indexed: 05/13/2023]
Abstract
KEY MESSAGE Dynamic transcriptome profiling revealed excessive, yet ineffective, immune response to V. nonalfalfae infection in susceptible hop, global gene downregulation in shoots of resistant hop and only a few infection-associated genes in roots. Hop (Humulus lupulus L.) production is hampered by Verticillium wilt, a disease predominantly caused by the soil-borne fungus Verticillium nonalfalfae. Only a few hop cultivars exhibit resistance towards it and mechanisms of this resistance have not been discovered. In this study, we compared global transcriptional responses in roots and shoots of resistant and susceptible hop plants infected by a lethal strain of V. nonalfalfae. Time-series differential gene expression profiles between infected and mock inoculated plants were determined and subjected to network-based analysis of functional enrichment. In the resistant hop cultivar, a remarkably low number of genes were differentially expressed in roots in response to V. nonalfalfae infection, while the majority of differentially expressed genes were down-regulated in shoots. The most significantly affected genes were related to cutin biosynthesis, cell wall biogenesis, lateral root development and terpenoid biosynthesis. On the other hand, susceptible hop exhibited a strong defence response in shoots and roots, including increased expression of genes associated with plant responses, such as innate immunity, wounding, jasmonic acid pathway and chitinase activity. Strong induction of defence-associated genes in susceptible hop and a low number of infection-responsive genes in the roots of resistant hop are consistent with previous findings, confirming the pattern of excessive response of the susceptible cultivar, which ultimately fails to protect the plant from V. nonalfalfae. This research offers a multifaceted overview of transcriptional responses of susceptible and resistant hop cultivars to V. nonalfalfae infection and represents a valuable resource in the study of this plant-pathogen interaction.
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Affiliation(s)
- Vasja Progar
- Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Jernej Jakše
- Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Nataša Štajner
- Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Sebastjan Radišek
- Plant Protection Department, Slovenian Institute of Hop Research and Brewing, Žalec, Slovenia
| | - Branka Javornik
- Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Sabina Berne
- Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
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Killeen DP, Watkins OC, Sansom CE, Andersen DH, Gordon KC, Perry NB. Fast Sampling, Analyses and Chemometrics for Plant Breeding: Bitter Acids, Xanthohumol and Terpenes in Lupulin Glands of Hops (Humulus lupulus). Phytochem Anal 2017; 28:50-57. [PMID: 27976466 DOI: 10.1002/pca.2642] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 08/04/2016] [Accepted: 08/22/2016] [Indexed: 06/06/2023]
Abstract
INTRODUCTION The valuable secondary metabolites in hops (bitter acids, xanthohumol, volatile monoterpenes and sesquiterpenes) are sequestered in lupulin glands (extracellular trichomes) which can be collected and analysed with little or no sample preparation. OBJECTIVES To determine whether high throughput screening of lupulin glands composition, by fast analyses and chemometrics, could be used for breeder selection of hops with key flavour attributes. METHODS Lupulin glands from 139 plants (39 cultivars/advanced selections) were analysed by Raman and 1 H NMR spectroscopy, and head-space solid-phase microextraction (HS-SPME) GC-FID. The digital X,Y-data were subjected to principal component analysis (PCA) and the results compared with conventional analyses of extracts of whole hops from the same plants. Quantitative 1 H NMR analyses were also done for the bitter acids. RESULTS Raman spectroscopy rapidly identified hops cultivars with high xanthohumol concentrations and high α:β bitter acid ratios. 1 H NMR spectroscopy was slower, requiring a solvent extraction, but distinguished cultivars by cohumulone content as well as α:β acid ratios. HS-SPME-GC rapidly distinguished aroma hops with high myrcene and farnesene contents, and pinpointed a novel selection with unusual sesquiterpenes. The quantitative NMR analyses showed correlations between bitter acid concentrations related to biosynthetic pathways. CONCLUSIONS Analysis of lupulin glands gave reliable results for the main quality indicators used by hops breeders, potentially avoiding harvesting, drying and solvent extracting whole hops. PCA of digital X,Y-data rapidly discriminated different hops chemotypes, and highlighted plants with potential for new flavourcultivars. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Daniel P Killeen
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - Oliver C Watkins
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - Catherine E Sansom
- The New Zealand Institute for Plant & Food Research Limited, Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - David H Andersen
- The New Zealand Institute for Plant & Food Research Limited, 55 Old Mill, RD 3, Motueka, 7198, New Zealand
| | - Keith C Gordon
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
- Dodd-Walls Centre, University of Otago, Dunedin, New Zealand
| | - Nigel B Perry
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
- The New Zealand Institute for Plant & Food Research Limited, Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
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Abstract
Given the persistent confusion about the risks and benefits of hormone therapy since 2002 and the first publication from the Women's Health Initiative's primary findings, women and health care providers are increasingly motivated to find effective, nonhormonal approaches to treat menopause-related symptoms. Complementary and alternative medicine has grown increasingly popular in the last decade. A wide array of botanic medicines is offered as an alternative approach to hormone therapy for menopause, but data documenting efficacy and safety are limited. None of the available botanicals is as effective as hormone therapy in the management of vasomotor symptoms.
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Affiliation(s)
- Maida Taylor
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, CA, USA.
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Cregeen S, Radisek S, Mandelc S, Turk B, Stajner N, Jakse J, Javornik B. Different Gene Expressions of Resistant and Susceptible Hop Cultivars in Response to Infection with a Highly Aggressive Strain of Verticillium albo-atrum. Plant Mol Biol Report 2015; 33:689-704. [PMID: 25999664 PMCID: PMC4432018 DOI: 10.1007/s11105-014-0767-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Verticillium wilt has become a serious threat to hop production in Europe due to outbreaks of lethal wilt caused by a highly virulent strain of Verticillium albo-atrum. In order to enhance our understanding of resistance mechanisms, the fungal colonization patterns and interactions of resistant and susceptible hop cultivars infected with V. albo-atrum were analysed in time course experiments. Quantification of fungal DNA showed marked differences in spatial and temporal fungal colonization patterns in the two cultivars. Two differential display methods obtained 217 transcripts with altered expression, of which 84 showed similarity to plant proteins and 8 to fungal proteins. Gene ontology categorised them into cellular and metabolic processes, response to stimuli, biological regulation, biogenesis and localization. The expression patterns of 17 transcripts with possible implication in plant immunity were examined by real-time PCR (RT-qPCR). Our results showed strong expression of genes encoding pathogenesis-related (PR) proteins in susceptible plants and strong upregulation of genes implicated in ubiquitination and vesicle trafficking in the incompatible interaction and their downregulation in susceptible plants, suggesting the involvement of these processes in the hop resistance reaction. In the resistant cultivar, the RT-qPCR expression patterns of most genes showed their peak at 20 dpi and declined towards 30 dpi, comparable to the gene expression pattern of in planta detected fungal protein and coinciding with the highest fungal biomass in plants at 15 dpi. These expression patterns suggest that the defence response in the resistant cultivar is strong enough at 20 dpi to restrict further fungus colonization.
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Affiliation(s)
- Sara Cregeen
- Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Sebastjan Radisek
- Slovenian Institute for Hop Research and Brewing, Cesta ŽalskegaTabora 2, SI-3320 Žalec, Slovenia
| | - Stanislav Mandelc
- Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Boris Turk
- Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Natasa Stajner
- Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Jernej Jakse
- Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Branka Javornik
- Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
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Purves RW, Ambrose SJ, Clark SM, Stout JM, Page JE. Separation of isomeric short-chain acyl-CoAs in plant matrices using ultra-performance liquid chromatography coupled with tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 980:1-7. [PMID: 25553535 DOI: 10.1016/j.jchromb.2014.12.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/26/2014] [Accepted: 12/08/2014] [Indexed: 10/24/2022]
Abstract
Acyl coenzyme A (acyl-CoA) thioesters are important intermediates in cellular metabolism and being able to distinguish among them is critical to fully understanding metabolic pathways in plants. Although significant advances have been made in the identification and quantification of acyl-CoAs using liquid chromatography tandem mass spectrometry (LC-MS/MS), separation of isomeric species such as isobutyryl- and n-butyrl-CoA has remained elusive. Here we report an ultra-performance liquid chromatography (UPLC)-MS/MS method for quantifying short-chain acyl-CoAs including isomeric species n-butyryl-CoA and isobutyryl-CoA as well as n-valeryl-CoA and isovaleryl-CoA. The method was applied to the analysis of extracts of hop (Humulus lupulus) and provided strong evidence for the existence of an additional structural isomer of valeryl-CoA, 2-methylbutyryl-CoA, as well as an unexpected isomer of hexanoyl-CoA. The results showed differences in the acyl-CoA composition among varieties of Humulus lupulus, both in glandular trichomes and cone tissues. When compared with the analysis of hemp (Cannabis sativa) extracts, the contribution of isobutyryl-CoAs in hop was greater as would be expected based on the downstream polyketide products. Surprisingly, branched chain valeryl-CoAs (isovaleryl-CoA and 2-methylbutyryl-CoA) were the dominant form of valeryl-CoAs in both hop and hemp. The capability to separate these isomeric forms will help to understand biochemical pathways leading to specialized metabolites in plants.
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Affiliation(s)
- Randy W Purves
- Plant Sciences Department, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, Canada S7N 5A8; National Research Council of Canada, 110 Gymnasium Place, Saskatoon, SK, Canada S7N 0W9.
| | - Stephen J Ambrose
- National Research Council of Canada, 110 Gymnasium Place, Saskatoon, SK, Canada S7N 0W9
| | - Shawn M Clark
- National Research Council of Canada, 110 Gymnasium Place, Saskatoon, SK, Canada S7N 0W9; Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, SK, Canada S7N 5E2
| | - Jake M Stout
- Department of Biological Sciences, University of Manitoba, 50 Sifton Road, Winnipeg, MB, Canada R3T 2N2
| | - Jonathan E Page
- National Research Council of Canada, 110 Gymnasium Place, Saskatoon, SK, Canada S7N 0W9; Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, SK, Canada S7N 5E2; Department of Botany, The University of British Columbia, #3529-6270 University Boulevard, Vancouver, BC, Canada V6T 1Z4
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van Breemen RB, Yuan Y, Banuvar S, Shulman LP, Qiu X, Alvarenga RFR, Chen SN, Dietz BM, Bolton JL, Pauli GF, Krause E, Viana M, Nikolic D. Pharmacokinetics of prenylated hop phenols in women following oral administration of a standardized extract of hops. Mol Nutr Food Res 2014; 58:1962-9. [PMID: 25045111 DOI: 10.1002/mnfr.201400245] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 06/06/2014] [Accepted: 06/13/2014] [Indexed: 02/02/2023]
Abstract
SCOPE Women seeking alternatives to hormone-replacement therapy for menopausal symptoms often try botanical dietary supplements containing extracts of hops (Humulus lupulus L.). Hops contain 8-prenylnaringenin (8-PN), a potent phytoestrogen, the related flavanones 6-prenylnaringenin and isoxanthohumol (IX), and the prenylated chalcone xanthohumol (XN). METHODS AND RESULTS After chemically and biologically standardizing an extract of spent hops to these marker compounds, an escalating dose study was carried out in menopausal women to evaluate safety and pharmacokinetics. 8-PN, 6-prenylnaringenin, IX, and XN, sex hormones, and prothrombin time were determined in blood samples and/or 24 h urine samples. There was no effect on sex hormones or blood clotting. The maximum serum concentrations of the prenylated phenols were dose-dependent and were reached from 2 to 7 h, indicating slow absorption. The marker compounds formed glucuronides that were found in serum and urine. Secondary peaks at 5 h in the serum concentration-time curves indicated enterohepatic recirculation. The serum concentration-time curves indicated demethylation of IX to form 8-PN and cyclization of XN to IX. Slow absorption and enterohepatic recirculation contributed to half-lives exceeding 20 h. CONCLUSION This human study indicated long half-lives of the estrogenic and proestrogenic prenylated phenols in hops but no acute toxicity.
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Affiliation(s)
- Richard B van Breemen
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, Chicago, IL, USA
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Abstract
In the West, sugar-based, ginger flavored beverages may contain hops, other flavorings, fruit juices, and varying levels of ethanol. Ginger ales contain 0.5%v/v; ginger beers >0.5%; and alcoholic ginger beers 0.5 ≤ 11%. Ales are carbonated by pressurized CO2, while beers and alcoholic beers are carbonated by yeast or ginger beer plant (GBP). In Africa, grain-based beverages include "fura da nono," "kunu," and "akamu," which are spiced with one or more flavorings including ginger, black pepper, clove, chili pepper, or Aframomum alligator peppers. Spices have flavor because they contain essential oils (EOs), which are composed of aroma-active compounds (AACs). The benefits and toxicities of spices are ascribed to their EOs/AACs contents. AIM Given the toxic potentials of EOs/AACs vis-à-vis their benefits, this review aimed to investigate the means by which the levels of EOs/AACs in spiced beverages are regulated. METHODOLOGY The benefits and liabilities of key EOs/AACs of spices were identified and described. The methods for assaying them in raw materials and beverages were also identified. RESULTS There was a dearth of data on the levels of EOs/AACs in both raw and finished goods. Moreover, their assay methods were found to be tedious and costly. The implications of these findings on regulation are discussed. CONCLUSIONS Owing to the practical difficulties in assaying flavors in beverages, both manufacturers and regulators should focus on: (i) the wholesomeness of raw materials; and (ii) good manufacturing practice (GMP). However, studies aimed at developing more robust methods for flavor should continue.
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Affiliation(s)
- Sunday J Ameh
- a 1 Department of Medicinal Chemistry and Quality Control , National Institute for Pharmaceutical Research and Development (NIPRD) , Garki , Abuja , Nigeria
| | - Nneka N Ibekwe
- a 1 Department of Medicinal Chemistry and Quality Control , National Institute for Pharmaceutical Research and Development (NIPRD) , Garki , Abuja , Nigeria
| | - Benjamin U Ebeshi
- b 2 Department of Pharmaceutical & Medicinal Chemistry , Niger Delta University , Amassoma , Nigeria
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Yuan Y, Qiu X, Nikolić D, Chen SN, Huang K, Li G, Pauli GF, van Breemen RB. Inhibition of human cytochrome P450 enzymes by hops (Humulus lupulus) and hop prenylphenols. Eur J Pharm Sci 2013; 53:55-61. [PMID: 24342125 DOI: 10.1016/j.ejps.2013.12.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 10/18/2013] [Accepted: 12/05/2013] [Indexed: 11/29/2022]
Abstract
As hops (Humulus lupulus L.) are used in the brewing of beer and by menopausal women as estrogenic dietary supplements, the potential for hop extracts and hop constituents to cause drug-botanical interactions by inhibiting human cytochrome P450 enzymes was investigated. Inhibition of major human cytochrome P450 enzymes by a standardized hop extract and isolated hop prenylated phenols was evaluated using a fast and efficient assay based on ultrahigh pressure liquid chromatography-tandem mass spectrometry. The hop extract at 5 μg/mL inhibited CYP2C8 (93%), CYP2C9 (88%), CYP2C19 (70%), and CYP1A2 (27%) with IC50 values of 0.8, 0.9, 3.3, and 9.4 μg/mL, respectively, but time-dependent inactivation was observed only for CYP1A2. Isoxanthohumol from hops was the most potent inhibitor of CYP2C8 with an IC50 of 0.2 μM, whereas 8-prenylnaringenin was the most potent inhibitor of CYP1A2, CYP2C9 and CYP2C19 with IC50 values of 1.1 μM, 1.1 μM and 0.4 μM, respectively. Extracts of hops contain prenylated compounds such as the flavanones isoxanthohumol and 8-prenylnaringenin and the chalcone xanthohumol that can inhibit CYP450s, especially the CYP2C family, which may affect the efficacy and safety of some CYP2C substrate drugs when co-administered.
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Affiliation(s)
- Yang Yuan
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, Chicago, Illinois 60612-72312
| | - Xi Qiu
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, Chicago, Illinois 60612-72312
| | - Dejan Nikolić
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, Chicago, Illinois 60612-72312
| | - Shao-Nong Chen
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, Chicago, Illinois 60612-72312
| | - Ke Huang
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, Chicago, Illinois 60612-72312
| | - Guannan Li
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, Chicago, Illinois 60612-72312
| | - Guido F Pauli
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, Chicago, Illinois 60612-72312
| | - Richard B van Breemen
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, Chicago, Illinois 60612-72312
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Legette L, Karnpracha C, Reed RL, Choi J, Bobe G, Christensen JM, Rodriguez-Proteau R, Purnell JQ, Stevens JF. Human pharmacokinetics of xanthohumol, an antihyperglycemic flavonoid from hops. Mol Nutr Food Res 2013; 58:248-55. [PMID: 24038952 DOI: 10.1002/mnfr.201300333] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 06/24/2013] [Accepted: 06/28/2013] [Indexed: 12/25/2022]
Abstract
SCOPE Xanthohumol (XN) is a bioactive prenylflavonoid from hops. A single-dose pharmacokinetic (PK) study was conducted in men (n = 24) and women (n = 24) to determine dose-concentration relationships. METHODS AND RESULTS Subjects received a single oral dose of 20, 60, or 180 mg XN. Blood was collected at 0, 0.25, 0.5, 1, 2, 4, 8, 12, 24, 48, 72, 96, and 120 h. Plasma levels of XN and its metabolites, isoxanthohumol (IX), 8-prenylnaringenin (8PN), and 6-prenylnaringenin (6PN) were measured by LC-MS/MS. Xanthohumol (XN) and IX conjugates were dominant circulating flavonoids among all subjects. Levels of 8PN and 6PN were undetectable in most subjects. The XN PK profile showed peak concentrations around 1 h and between 4-5 h after ingestion. The maximum XN concentrations (C(max)) were 33 ± 7 mg/L, 48 ± 11 mg/L, and 120 ± 24 mg/L for the 20, 60, and 180 mg dose, respectively. Using noncompartmental modeling, the area under the curves (AUC(0→∞)) for XN were 92 ± 68 h × μg/L, 323 ± 160 h × μg/L, and 863 ± 388 h × μg/L for the 20, 60, and 180 mg dose, respectively. The mean half-life of XN was 20 h for the 60 and 18 h for the 180 mg dose. CONCLUSION XN has a distinct biphasic absorption pattern with XN and IX conjugates being the major circulating metabolites.
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Affiliation(s)
- LeeCole Legette
- Linus Pauling Institute, Oregon State University, Corvallis, OR, USA; College of Pharmacy, Oregon State University, Corvallis, OR, USA
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Allsopp P, Possemiers S, Campbell D, Gill C, Rowland I. A comparison of the anticancer properties of isoxanthohumol and 8-prenylnaringenin using in vitro models of colon cancer. Biofactors 2013; 39:441-7. [PMID: 23361834 DOI: 10.1002/biof.1084] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 12/10/2012] [Indexed: 11/05/2022]
Abstract
The hops plant (Humulus lupulus L.) is an essential ingredient in beer and contains a number of potentially bioactive prenylflavonoids, the predominant being the weakly estrogenic isoxanthohumol (Ix), which can be converted to the more strongly estrogenic 8-PN by the colonic microbiota. The aim of this study was to investigate the biological activity of 8-PN and Ix using in vitro models representing key stages of colorectal carcinogenesis, namely cell growth and viability (MTT assay), cell-cycle progression (DNA content assay), DNA damage (Comet assay), and invasion (Matrigel assay). A significant decrease in Caco-2 cell viability was noted after both 8-PN and Ix treatments at the higher doses (40 and 50 μM, respectively) although the impact on cell cycle differed between the two compounds. The decreased cell viability observed after Ix treatment was associated with a concentration-dependent increase in G2/M and an increased sub-G1 cell-cycle fraction, whereas treatment with 8-PN was associated with an elevated G0/G1 and an increased sub-G1 cell-cycle fraction. Significant antigenotoxic activity was noted at all 8-PN concentrations tested (5-40 μM). Although significant antigenotoxic activity was also noted with Ix treatment at ≤25 μM, at a higher dose, Ix itself exerted genotoxic activity. In a dose-dependent manner, both compounds inhibited HT115 cell invasion with reductions up to 52 and 46% for Ix and 8-PN, respectively, in comparison to untreated cells. This study demonstrated that both Ix and its gut microbial metabolite 8-PN exert anticancer effects on models of key stages of colon tumourigenesis.
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Affiliation(s)
- Philip Allsopp
- Northern Ireland Centre for Food and Health, University of Ulster, Coleraine, Co. Derry, Northern Ireland, UK.
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Farag MA, Wessjohann LA. Cytotoxic effect of commercial Humulus lupulus L. (hop) preparations - In comparison to its metabolomic fingerprint. J Adv Res 2012; 4:417-21. [PMID: 25685448 PMCID: PMC4293872 DOI: 10.1016/j.jare.2012.07.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 07/17/2012] [Accepted: 07/17/2012] [Indexed: 02/02/2023] Open
Abstract
Hops (Humulus lupulus L. Cannabaceae) is an economically important crop, that has drawn more attention in recent years due to its potential pharmaceutical applications. Bitter acids (prenylated polyketides) and prenylflavonoids are the primary phytochemical components that account for hops resins medicinal value. We have previously reported on utilizing untargeted NMR and MS metabolomics for analysis of 13 hops cultivars, revealing for differences in α- versus β-bitter acids composition in derived resins. In this study, effect of ratios of bitter α- to β-acids in hop resins to cytotoxicity of hop resins was investigated. In vitro cell culture assays revealed that β-acids were more effective than α-acids in growth inhibition of PC3 and HT29 cancer cell lines. Nevertheless, hop resins enriched in β-acids showed comparable growth inhibition patterns to α-enriched resins and suggesting that bioactivity may not be easily predicted by metabolomics and/or gross metabolic profiling in hops.
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Affiliation(s)
- Mohamed A Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr el Aini St., P.B. 11562, Cairo, Egypt ; Leibniz Institute of Plant Biochemistry, Dept. of Bioorganic Chemistry, Weinberg 3, D-06120 Halle (Saale), Germany
| | - Ludger A Wessjohann
- Leibniz Institute of Plant Biochemistry, Dept. of Bioorganic Chemistry, Weinberg 3, D-06120 Halle (Saale), Germany
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Hyland RA, Rogers PJ, Higgins VJ, Myers S, Coorssen JR. Measuring hydrogen peroxide reduction using a robust, inexpensive, and sensitive method. J Chem Biol 2012; 5:143-50. [PMID: 23997833 DOI: 10.1007/s12154-012-0083-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Accepted: 08/14/2012] [Indexed: 11/30/2022] Open
Abstract
Here, we report an improved method to analyze antioxidant activity using the europium tetracycline assay developed by Duerkop and Wolfbeis (J Fluor 15(5):755-761, 2005). The europium tetracycline hydrogen peroxide reduction assay (EHRA) accurately measures antioxidant activity based on hydrogen peroxide scavenging. Several known antioxidant compounds were assessed with the EHRA and a stoichiometric relationship between the number of oxidant molecules trapped per molecule of antioxidant was identified. Various extracts of hops were also tested to validate this method for use with natural extracts; water extraction yielded the highest level of antioxidant activity. Hop leaves were shown to be a better source of antioxidants relative to the traditional hop cones. The data also indicate that the EHRA may serve to breach the hydrophilic/lipophilic gap in antioxidant screening as the europium tetracycline probe is effective in many solvents. The EHRA thus provides a robust and inexpensive measure of antioxidant activity.
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Affiliation(s)
- Ryan A Hyland
- School of Science and Health, University of Western Sydney, Sydney, NSW 1797 Australia
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López ML, Gardea-Torresdey JL, Peralta-Videa JR, de la Rosa G, Armendáriz V, Herrera I, Troiani H, Henning J. Gold binding by native and chemically modified hops biomasses. Bioinorg Chem Appl 2005;:29-41. [PMID: 18365087 DOI: 10.1155/BCA.2005.29] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Heavy metals from mining, smelting operations and other industrial processing facilities pollute
wastewaters worldwide. Extraction of metals from industrial effluents has been widely studied due to the
economic advantages and the relative ease of technical implementation. Consequently, the search for new
and improved methodologies for the recovery of gold has increased. In this particular research, the use of
cone hops biomass (Humulus lupulus) was investigated as a new option for gold recovery. The results
showed that the gold binding to native hops biomass was pH dependent from pH 2 to pH 6, with a maximum
percentage binding at pH 3. Time dependency studies demonstrated that Au(III) binding to native and
modified cone hops biomasses was found to be time independent at pH 2 while at pH 5, it was time
dependent. Capacity experiments demonstrated that at pH 2, esterified hops biomass bound 33.4 mg Au/g of
biomass, while native and hydrolyzed hops biomasses bound 28.2 and 12.0 mg Au/g of biomass,
respectively. However, at pH 5 the binding capacities were 38.9, 37.8 and 11.4 mg of Au per gram of native,
esterified and hydrolyzed hops biomasses, respectively.
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