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https://www.readbyqxmd.com/read/28301290/production-of-a-halotolerant-biofilm-from-green-coffee-beans-immobilized-on-loofah-fiber-luffa-cylindrica-and-its-effect-on-phenanthrene-degradation-in-seawater
#1
Sonia Acosta-Rubí, Araceli Tomasini Campocosio, María Del Carmen Montes-Horcasitas, Liliana Quintanar-Vera, Fernando Esparza-García, Refugio Rodríguez-Vázquez
A biofilm developed from low quality green coffee beans was tested for its capacity to degrade the polynuclear aromatic hydrocarbon (PAH), phenanthrene (Phe), in seawater. Microorganisms were immobilized on two types of Luffa cylindrica (with three and four placental cavities), and the effects of moisture content (20, 30 and 40% of water holding capacity) and particle size (<0.42 mm, 0.42-0.86 mm and 0.86-2.0 mm) of green coffee beans on microbial activity were considered. Biofilm growth determined by respirometry showed a highest microbial activity at a moisture content of 40% and particle size of 0...
March 16, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28290294/behavior-of-yeast-inoculated-during-semi-dry-coffee-fermentation-and-the-effect-on-chemical-and-sensorial-properties-of-the-final-beverage
#2
Luciana Silva Ribeiro, Maria Gabriela da Cruz Pedrozo Miguel, Suzana Reis Evangelista, Pamela Mynsen Machado Martins, Joshua van Mullem, Maisa Honorio Belizario, Rosane Freitas Schwan
Pulped Mundo Novo and Ouro Amarelo coffee beans were inoculated with Saccharomyces cerevisiae (CCMA 0200 and CCMA 0543) during semi-dry coffee fermentation and compared with a non-inoculated control. Samples were collected throughout the fermentation process (12days) to evaluate the persistence of the inoculum by Real-Time quantitative PCR (qPCR). Also, the chemical composition of the beans was determined by HPLC and GC-MS and the roasted beans were sensorial evaluated using the cupping test. S. cerevisiae CCMA 0543 had an average population of 5...
February 2017: Food Research International
https://www.readbyqxmd.com/read/28283450/molecular-modification-of-native-coffee-polysaccharide-using-subcritical-water-treatment-structural-characterization-antioxidant-and-dna-protecting-activities
#3
Adane Tilahun Getachew, Byung Soo Chun
Polysaccharides are an abundant resource in coffee beans and have proved to show numerous bioactivities. Despite their abundance, their activities are not always satisfactory mostly due to their structure and large molecular size. Molecular modifications of native polysaccharides can overcome this problem. In this study, we used a novel and green method to modify native coffee polysaccharides using subcritical water (SCW) treatment. The SCW treatment was used at the temperature of 180°C-220°C and pressure of 30-60bar...
March 7, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28274052/efficacy-of-natural-and-allopathic-antimicrobial-agents-incorporated-onto-guided-tissue-regeneration-membrane-against-periodontal-pathogens-an-in-vitro-study
#4
Neha Mehrotra, Ajay Reddy Palle, Rajani Kumar Gedela, Sanjay Vasudevan
INTRODUCTION: Periodontal disease is one of the most prevalent afflictions worldwide. It is an infection of the periodontium as a result of subgingival colonization of the specific microbiota, leading to loss of attachment, which requires optimal care for regeneration to its pre-disease state. Guided Tissue Regeneration (GTR) is one of the successful treatment modalities in Periodontal Regenerative Therapy, but is vulnerable to bacterial colonization. The conflict between usage of classical antibiotics and plant origin antimicrobial agents has recently been in the limelight...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28260086/development-of-an-assay-to-assess-genotoxicity-by-particulate-matter-extract
#5
Alexandros Priftis, Konstantinos Papikinos, Marina Koukoulanaki, Efthalia Kerasioti, Dimitrios Stagos, Konstantinos Konstantinopoulos, Demetrios A Spandidos, Marianthi Kermenidou, Spyros Karakitsios, Dimosthenis Sarigiannis, Aristides M Tsatsakis, Demetrios Kouretas
The current study describes a method for assessing the oxidative potential of common environmental stressors (ambient air particulate matter), using a plasmid relaxation assay where the extract caused single-strand breaks, easily visualised through electrophoresis. This assay utilises a miniscule amount (11 µg) of particulate matter (PM) extract compared to other, cell‑based methods (~3,000 µg). The negative impact of air pollution on human health has been extensively recognised. Among the air pollutants, PM plays an eminent role, as reflected in the broad scientific interest...
February 6, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28251341/coffee-tea-caffeine-and-risk-of-hypertension-the-singapore-chinese-health-study
#6
Choy-Lye Chei, Julian Kenrick Loh, Avril Soh, Jian-Min Yuan, Woon-Puay Koh
PURPOSE: The relationship between coffee and tea, and risk of hypertension remains controversial in Western populations. We investigated these associations in an Asian population. METHODS: The Singapore Chinese Health Study is a population-based prospective cohort that recruited 63,257 Chinese aged 45-74 years and residing in Singapore from 1993 to 1998. Information on consumption of coffee, tea, and other lifestyle factors was collected at baseline, and self-reported physician-diagnosed hypertension was assessed during two follow-up interviews (1999-2004, 2006-2010)...
March 1, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28249935/an-adolescent-and-early-adulthood-dietary-pattern-associated-with-inflammation-and-the-incidence-of-breast-cancer
#7
Holly R Harris, Walter C Willett, Rita L Vaidya, Karin B Michels
Adolescence is a highly susceptible period for mammary carcinogenesis, but few prospective studies have examined the role of adolescent diet in breast cancer risk. Reduced rank regression has previously been used to identify a dietary pattern associated with markers of inflammation (C-reactive protein, IL6, and TNFα receptor 2). We investigated whether an adolescent and early adulthood inflammatory dietary pattern was associated with breast cancer among 45,204 women in the Nurses' Health Study II using reduced rank regression...
March 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/28229386/levels-of-antioxidant-activity-and-fluoride-content-in-coffee-infusions-of-arabica-robusta-and-green-coffee-beans-in-according-to-their-brewing-methods
#8
J Wolska, Katarzyna Janda, K Jakubczyk, M Szymkowiak, D Chlubek, I Gutowska
Coffee is a rich source of dietary antioxidants, and this property links with the fact that coffee is one of the world's most popular beverages. Moreover, it is a source of macro- and microelements, including fluoride. The aim of this work was to determine antioxidant activity of coffee beverages and fluoride content depending on different coffee species and conditions of brewing. Three species of coffee, arabica, robusta and green coffee beans obtained from retail stores in Szczecin (Poland) were analyzed...
February 22, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28229135/the-colonic-metabolites-dihydrocaffeic-acid-and-dihydroferulic-acid-are-more-effective-inhibitors-of-in-vitro-platelet-activation-than-their-phenolic-precursors
#9
Gema Baeza, Eva-Maria Bachmair, Sharon Wood, Raquel Mateos, Laura Bravo, Baukje de Roos
Cardiovascular disease (CVD) is the major cause of morbidity and mortality worldwide. The consumption of a healthy diet rich in polyphenols has been inversely associated with the development of CVD. This study evaluated the effects of green coffee bean extract (GCBE) and yerba mate phenolic extract (YMPE), the main phenolic and methylxanthine constituents (5-caffeoylquinic acid, 3,5-dicaffeoylquinic acid, caffeine, and theobromine), and their main metabolites (caffeic acid, ferulic acid, dihydrocaffeic acid (DHCA) and dihydroferulic acid (DHFA)) on platelet activation in vitro...
February 23, 2017: Food & Function
https://www.readbyqxmd.com/read/28195330/positive-and-negative-aspects-of-green-coffee-consumption-antioxidant-activity-vs-mycotoxins
#10
Magdalena Jeszka-Skowron, Agnieszka Zgoła-Grześkowiak, Agnieszka Waśkiewicz, Łukasz Stępień, Ewa Stanisz
BACKGROUND: The quality of coffee depends not only on the contents of healthy compounds but also on its contamination with microorganisms which can produce mycotoxins during development, harvesting, preparation, transport and storage. RESULTS: Antioxidant activity of green coffee brews measured in this study by ABTS, DPPH and Folin-Ciocalteu assays showed that coffee extracts from Robusta beans possessed highest activity in all assays than extracts from Arabica coffee...
February 13, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28193407/mechanism-of-action-and-interactions-between-xanthine-oxidase-inhibitors-derived-from-natural-sources-of-chlorogenic-and-ferulic-acids
#11
Urszula Gawlik-Dziki, Dariusz Dziki, Michał Świeca, Renata Nowak
The aim of this study was to estimate the phenolic composition and xanthine oxidase (XO) inhibitory activity of green coffee beans (GCB) and wholemeal wheat flour (WF). Additionally, the type and strength of interaction (expressed as the combination index, CI) and mode of XO inhibition were analyzed. The major phenolic in GCB was 5-caffeoylquinic acid (39.92mg/g dw). The main phenolic acids in WF were trans- and cis-ferulic acids (257 and 165.57mg/100g dw, respectively). Both ferulic and chlorogenic acids individually inhibited XO, and for their combination moderate synergism was found...
June 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28184158/biological-activity-of-green-synthesized-silver-nanoparticles-depends-on-the-applied-natural-extracts-a-comprehensive-study
#12
Andrea Rónavári, Dávid Kovács, Nóra Igaz, Csaba Vágvölgyi, Imre Miklós Boros, Zoltán Kónya, Ilona Pfeiffer, Mónika Kiricsi
Due to obvious disadvantages of the classical chemical methods, green synthesis of metallic nanoparticles has attracted tremendous attention in recent years. Numerous environmentally benign synthesis methods have been developed yielding nanoparticles via low-cost, eco-friendly, and simple approaches. In this study, our aim was to determine the suitability of coffee and green tea extracts in green synthesis of silver nanoparticles as well as to compare the performance of the obtained materials in different biological systems...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28163121/-epigallocatechin-gallate-synergistically-potentiates-prostaglandin-e2-stimulated-osteoprotegerin-synthesis-in-osteoblasts
#13
Gen Kuroyanagi, Haruhiko Tokuda, Naohiro Yamamoto, Shingo Kainuma, Kazuhiko Fujita, Reou Ohguchi, Tetsu Kawabata, Go Sakai, Rie Matsushima-Nishiwaki, Atsushi Harada, Osamu Kozawa, Takanobu Otsuka
(-)-Epigallocatechin gallate (EGCG), the most abundant flavonoid in green tea, and chlorogenic acid, the main polyphenol found in coffee, attract significant attention owing to health benefits. We have previously demonstrated that prostaglandin E2 (PGE2) stimulates osteoprotegerin synthesis through the activation of p38 mitogen-activated protein (MAP) kinase and stress-activated protein kinase/c-Jun N-terminal kinase (SAPK/JNK) in osteoblast-like MC3T3-E1 cells. In the present study, we investigated the effects of EGCG or chlorogenic acid on the PGE2-stimulated osteoprotegerin synthesis in MC3T3-E1 cells...
January 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28153669/coffee-and-tea-consumption-and-risk-of-leukaemia-in-an-adult-population-a-reanalysis-of-the-italian-multicentre-case-control-study
#14
Stefano Parodi, Domenico Franco Merlo, Emanuele Stagnaro
BACKGROUND: Coffee and tea are the most frequently consumed beverages in the world. Their potential effect on the risk of developing different types of malignancies has been largely investigated, but studies on leukaemia in adults are scarce. METHODS: The present investigation is aimed at evaluating the potential role of regular coffee and tea intake on the risk of adult leukaemia by reanalysing a large population based case-control study carried out in Italy, a country with a high coffee consumption and a low use of green tea...
January 30, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28150749/occurrence-of-acrylamide-carcinogen-in-arabic-coffee-qahwa-coffee-and-tea-from-saudi-arabian-market
#15
Mohammad Rizwan Khan, Zeid Abdullah Alothman, Mu Naushad, Ahmed Khodran Alomary, Sulaiman Mohammed Alfadul, Ibrahim Hotan Alsohaimi, Mohammad Saad Algamdi
The present work describes the outcomes of the assessment on acrylamide contents in a number of thermally treated foods (Arabic coffee Qahwa, coffee and tea) obtained from the Saudi Arabian markets. A total of 56 food samples of different brands and origin were studied, the amounts of acrylamide in Arabic coffee Qahwa, coffee and tea were obtained in the range of 10 to 682 μg kg(-1). In comparison to coffee (152-682 μg kg(-1)), the Arabic coffee Qahwa (73-108 μg kg(-1)) and tea (10-97 μg kg(-1)) contain lower amounts of acrylamide...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28142165/-influence-of-luxury-foodstuffs-on-glaucoma
#16
K K Huber-van der Velden
The term "luxury foodstuffs" refers to foods which are not consumed because of their nutritional value. Classic modern luxury foodstuffs are alcohol, caffeine-containing drinks, cocoa, sugar and tobacco. The following review article examines some of these modern luxury foodstuffs in detail, as well as their influence on glaucoma. Thus, small quantities of alcohol lower high intraocular pressure and have a positive influence on the blood circulation of the optic nerve. In addition, red wine polyphenols exert vasoprotective effects...
February 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28071018/effect-of-roasting-degree-on-the-antioxidant-activity-of-different-arabica-coffee-quality-classes
#17
Božana Odžaković, Natalija Džinić, Zoran Kukrić, Slavica Grujić
BACKGROUND: Coffee is one of the most widely consumed beverages in the world, because of its unique sensory properties and physiological properties. Coffee beverages represent a significant source of antioxidants in the consumers' diet and contribute significantly to their daily intake. The aim of this research was to investigate the effect of different roasting degrees on the content of biologically active compounds and antioxidant activity in different quality classes of Arabica coffee...
October 2016: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28069114/soymilk-enriched-with-green-coffee-phenolics-antioxidant-and-nutritional-properties-in-the-light-of-phenolics-food-matrix-interactions
#18
Łukasz Sęczyk, Michał Świeca, Urszula Gawlik-Dziki
This study investigated the effect of soymilk fortification with green coffee extract (GCE) on phenolic contents, antioxidant capacity, relative in vitro digestibility of proteins and starch, and consumer acceptance. Special attention was paid to the effect of phenolics-food matrix interactions on fortification efficiency. Soymilk was enriched with GCE extracts containing 0.025-1mg of phenolics per 1mL-samples M1-M6. Compared to control, an increase in phenolic contents of up to 70% (M6) was observed for potentially bioaccessible fractions (AD)...
May 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28057147/-tea-coffee-intakes-and-risk-of-oral-squamous-cell-carcinoma-a-case-control-study
#19
L J Yan, F Chen, D M Liu, J F Huang, F P Liu, J F Wu, F Q Liu, J Z Ye, Y Qiu, L S Lin, B C He
Objective: To evaluate the effects of tea and coffee intakes on oral squamous cell carcinoma (OSCC) stratified by milk intake. Methods: A case-control study involving 593 OSCC patients confirmed by pathological diagnoses and 1 128 gender-age frequency matched controls was conducted in Fujian province during September 2010-March 2016. Unconditional logistic regression was used to calculate adjusted odds ratios (aORs) and corresponding 95% confidence intervals (CIs) to assess the effects of coffee, tea intakes and related variables on OSCC...
November 10, 2016: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28012628/syneresis-and-rheological-behaviors-of-set-yogurt-containing-green-tea-and-green-coffee-powders
#20
Özge Dönmez, Burçe Ataç Mogol, Vural Gökmen
This study aimed to investigate the effect of added green coffee powder (GCP) and green tea powder (GTP) on syneresis behavior and consistency of set yogurts. Adding GCP (1 or 2%) decreased syneresis rate. The effect of GTP on the syneresis rate was concentration dependent. In comparison to the control, GTP decreased syneresis rate when it was added at 0.02%, but it caused an increase when added at 2%. No significant difference was observed in the syneresis rates when GTP was added at 1 and 0.01%, until 14 and 7 d of storage, respectively...
February 2017: Journal of Dairy Science
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