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https://www.readbyqxmd.com/read/29150258/a-spent-coffee-grounds-based-biorefinery-for-the-production-of-biofuels-biopolymers-antioxidants-and-biocomposites
#1
REVIEW
Sanjib Kumar Karmee
Spent coffee grounds are composed of lipid, carbohydrates, carbonaceous, and nitrogen containing compounds among others. Using n-hexane and n-hexane/isopropanol mixture highest oil yield was achived during soxhlet extraction of oil from spent coffee grounds. Alternatively, supercritical carbon dioxide can be employed as a green solvent for the extraction of oil. Using advanced chemical and biotechnological methods, spent coffee grounds are converted to various biofuels such as, biodiesel, renewable diesel, bioethanol, bioethers, bio-oil, biochar, and biogas...
November 14, 2017: Waste Management
https://www.readbyqxmd.com/read/29146374/formation-kinetics-of-furfuryl-alcohol-in-a-coffee-model-system
#2
Abdullatif Albouchi, Michael Murkovic
The production of furfuryl alcohol from green coffee during roasting and the effect of multiple parameters on its formation were studied employing HPLC-DAD. Results show that coffee produces furfuryl alcohol in larger quantities (418µg/g) compared to other beans or seeds (up to 132µg/g) roasted under the same conditions. The kinetics of furfuryl alcohol production resemble those of other process contaminants (e.g., HMF, acrylamide) produced in coffee roasting, with temperature and time of roasting playing significant roles in quantities formed...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29138635/nmr-confirmation-and-hplc-quantification-of-javamide-i-and-javamide-ii-in-green-coffee-extract-products-available-in-the-market
#3
Jae B Park
Javamide-I/javamide-II are phenolic amides found in coffee. Recent reports suggested that they may contain several biological activities related to human health. Therefore, there is emergent interest about their quantities in coffee-related products. Green coffee extract is a powder extract made of unroasted green coffee beans, available as a dietary supplement. However, there is little information about the amounts of javamide-I/javamide-II in green coffee extract products in the market. Therefore, in this paper, javamide-I/javamide-II were extracted from green coffee extract products and their identifications were confirmed by NMR...
2017: International Journal of Analytical Chemistry
https://www.readbyqxmd.com/read/29108581/identification-of-coffee-leaves-using-ft-nir-spectroscopy-and-simca
#4
Corenthin Mees, Florence Souard, Cedric Delporte, Eric Deconinck, Piet Stoffelen, Caroline Stévigny, Jean-Michel Kauffmann, Kris De Braekeleer
Abundant literature has been devoted to coffee beans (green or roasted) chemical description but relatively few studies have been devoted to coffee leaves. Given the fact that coffee leaves are used for food and medicinal consumption, it was of interest to develop a rapid screening method in order to identify coffee leaves taxa. Investigation by Fourier - Transform near infrared spectroscopy (FT-NIRS) was performed on nine Coffea taxa leaves harvested over one year in a tropical greenhouse of the Botanic Garden Meise (Belgium)...
January 15, 2018: Talanta
https://www.readbyqxmd.com/read/29084127/green-coffee-been-exposure-and-symptoms-in-dock-workers-in-trieste-italy
#5
Anna Gasperazzo, Paolo Toffanin, Francesca Larese Filon
BACKGROUND: Green coffee workers can develop allergic symptoms due to green coffee beans (GCB) or to castor bean (CB) that can contaminate sacks used for the transportation. Data are limited in literature and a previous study performed in Trieste demonstrated allergic symptoms in 14.3% of dockworkers handling GCB. OBJECTIVES: To evaluate symptoms and exposure to GCB ultrafine particles in Trieste dockworkers. METHODS: Workers involved in GCB sacks transportation, storage and opening were asked to fill out a questionnaire on allergic respiratory symptoms...
October 27, 2017: La Medicina del Lavoro
https://www.readbyqxmd.com/read/29080460/chlorogenic-acid-cga-a-pharmacological-review-and-call-for-further-research
#6
REVIEW
Muhammad Naveed, Veghar Hejazi, Muhammad Abbas, Asghar Ali Kamboh, Ghulam Jilany Khan, Muhammad Shumzaid, Fawwad Ahmad, Daryoush Babazadeh, Xia FangFang, Faezeh Modarresi-Ghazani, Li WenHua, Zhou XiaoHui
Phenolic acids have recently gained substantial attention due to their various practical, biological and pharmacological effects. Chlorogenic Acid (CGA, 3-CQA) is a most abundant isomer among caffeoylquinic acid isomers (3-, 4-, and 5-CQA), that currently known as 5-CQA as per guidelines of IUPAC. It is one of the most available acids among phenolic acid compounds which can be naturally found in green coffee extracts and tea. CGA is an important and biologically active dietary polyphenol, playing several important and therapeutic roles such as antioxidant activity, antibacterial, hepatoprotective, cardioprotective, anti-inflammatory, antipyretic, neuroprotective, anti-obesity, antiviral, anti-microbial, anti-hypertension, free radicals scavenger and a central nervous system (CNS) stimulator...
October 25, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29076523/coffee-and-green-tea-consumption-and-subsequent-risk-of-acute-myeloid-leukemia-and-myelodysplastic-syndromes-in-japan
#7
Tomotaka Ugai, Keitaro Matsuo, Norie Sawada, Motoki Iwasaki, Taiki Yamaji, Taichi Shimazu, Atsushi Goto, Manami Inoue, Yoshinobu Kanda, Shoichiro Tsugane
Although coffee and green tea are suggested to reduce the risk of some types of cancers, only a few epidemiological studies have investigated their effect on the risk of acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS). Here, we investigated the association of coffee and green tea consumption and the risk of AML and MDS in a large-scale population-based cohort study in Japan. A total of 95,807 Japanese subjects (45,937 men and 49,870 women; age 40-69 years at baseline) were followed to the end of 2012, for an average of 18 years...
October 27, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29027270/the-yerba-mate-intake-has-a-neutral-effect-on-bone-a-case-control-study-in-postmenopausal-women
#8
Denise T A da Veiga, Raísa Bringhenti, Aline A Bolignon, Etiane Tatsh, Rafael N Moresco, Fabio V Comim, Melissa O Premaor
Nutritional factors have been associated with osteoporosis and fractures. The intake of coffee may increase the risk of fracture whereas the intake of black and green tea is associated with its reduction. Recently, consumption of yerba mate was associated with increased bone mineral density in postmenopausal women. Nonetheless, its influence on fracture is not known. The aim of this study was to evaluate the effect of yerba mate tea intake on fractures, bone markers, calcium homeostasis, and oxidative stress in postmenopausal women...
October 13, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28988315/serum-gamma-glutamyltransferase-is-inversely-associated-with-dietary-total-and-coffee-derived-polyphenol-intakes-in-apparently-healthy-japanese-men
#9
Chie Taguchi, Yoshimi Kishimoto, Kazuo Kondo, Kazushige Tohyama, Toshinao Goda
PURPOSE: Serum γ-glutamyltransferase (GGT) has been proposed as a marker of oxidative stress. Here, we examined the association between serum GGT and the dietary intake of polyphenols, which have antioxidant properties. METHODS: A cross-sectional survey including 7960 apparently healthy Japanese men (aged 22-86 years) who participated in health checkups was conducted in Shizuoka, Japan. We analyzed these subjects' clinical serum parameters and lifestyle factors, including dietary polyphenol intake, which was evaluated by a self-administered questionnaire and by matching the subjects' food consumption data with our original polyphenol content database...
October 7, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28918484/drug-herb-interactions-in-the-elderly-patient-with-ibd-a-growing-concern
#10
REVIEW
Haider Rahman, Marina Kim, Galen Leung, Jesse A Green, Seymour Katz
Inflammatory bowel disease (IBD), which includes conditions such as Crohn's disease and ulcerative colitis, is becoming more prevalent with the elderly being the fastest growing group. Parallel to this, there is an increasing interest in the use of complementary and alternative medicine (CAM). Nearly half of patients with IBD have used CAM at one time. The elderly patients, however, are burdened by comorbid conditions, polypharmacy, and altered functional status. With increasing use of complementary and alternative medicine in our elderly patients with IBD, it is vital for the provider to provide counsel on drug-herb potential interactions...
December 2017: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/28918319/determination-of-chlorogenic-acids-and-caffeine-in-homemade-brewed-coffee-prepared-under-various-conditions
#11
Jong-Sup Jeon, Han-Taek Kim, Il-Hyung Jeong, Se-Ra Hong, Moon-Seog Oh, Kwang-Hee Park, Jae-Han Shim, A M Abd El-Aty
Coffee, a complex mixture of more than 800 volatile compounds, is one of the most valuable commodity in the world, whereas caffeine and chlorogenic acids (CGAs) are the most common compounds. CGAs are mainly composed of caffeoylquinic acids (CQAs), dicaffeoylquinic acids (diCQAs), and feruloylquinic acids (FQAs). The major CGAs in coffee are neochlorogenic acid (3-CQA), cryptochlorogenic acid (4-CQA), and chlorogenic acid (5-CQA). Many studies have shown that it is possible to separate the isomers of FQAs by high-performance liquid chromatography (HPLC)...
October 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28917230/energy-restriction-combined-with-green-coffee-bean-extract-affects-serum-adipocytokines-and-the-body-composition-in-obese-women
#12
Fatemeh Haidari, Mehnoosh Samadi, Majid Mohammadshahi, Mohammad Taha Jalali, Kambiz Ahmadi Engali
BACKGROUND AND OBJECTIVES: Obesity has become a public health problem and is a cause of some preventable illnesses. Among several methods for treating obesity, the use of food supplements is highly common. A commonly used food supplement is green coffee bean extract. The objective of this study was to evaluate the efficacy of green coffee bean extract combined with an energy-restricted diet on the body composition and serum adipocytokines in obese women. METHODS AND STUDY DESIGN: In this randomised clinical trial, 64 obese women aged 20-45 years were selected and divided into two groups: an intervention group (receiving 400 mg green coffee bean extract for 8 weeks) and control group (receiving placebo)...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28912088/sip-and-spit-or-sip-and-swallow-choice-of-method-differentially-alters-taste-intensity-estimates-across-stimuli
#13
Cordelia A Running, John E Hayes
While the myth of the tongue map has been consistently and repeatedly debunked in controlled studies, evidence for regional differences in suprathreshold intensity has been noted by multiple research groups. Given differences in physiology between the anterior and posterior tongue (fungiform versus foliate and circumvallate papillae) and differences in total area stimulated (anterior only versus whole tongue, pharynx, and epiglottis), small methodological changes (sip and spit versus sip and swallow) have the potential to substantially influence data...
November 1, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28892685/using-cow-dung-and-spent-coffee-grounds-to-enhance-the-two-stage-co-composting-of-green-waste
#14
Lu Zhang, Xiangyang Sun
The objective of this study was to determine the effects of cow dung (CD) (at 0%, 20%, and 35%) and/or spent coffee grounds (SCGs) (at 0%, 30%, and 45%) as amendments in the two-stage co-composting of green waste (GW); the percentages refer to grams of amendment per 100g of GW based on dry weights. The combined addition of CD and SCGs improved the conditions during co-composting and the quality of the compost product in terms of composting temperature; particle-size distribution; mechanical properties; nitrogen changes; low-molecular weight compounds; humic substances; the degradation of lignin, cellulose, and hemicellulose; enzyme activities; the contents of total Kjeldahl nitrogen, total phosphorus, and total potassium; and the toxicity to germinating seeds...
December 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28890267/analysis-of-underivatised-low-volatility-compounds-by-comprehensive-two-dimensional-gas-chromatography-with-a-short-primary-column
#15
Fábio Junior Moreira Novaes, Chadin Kulsing, Humberto Ribeiro Bizzo, Francisco Radler de Aquino Neto, Claudia Moraes Rezende, Philip John Marriott
Comprehensive two-dimensional gas chromatography (GC×GC) approaches with cryogenic modulation were developed for the qualitative analysis of selected low volatility compounds in raw coffee bean extracts, without derivatisation. The approaches employed short first ((1)D) and second ((2)D) dimension columns, specifically a (1)D 65% phenyl methyl siloxane column (11m) and a (2)D 5% phenyl methyl siloxane column (1m), which allowed elution of high molar mass compounds (e.g.>600Da). Solutes included hydrocarbons, fatty acids, diterpenes, tocopherols, sterols, diterpene esters, and di- and triacylglycerides...
August 30, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28803325/an-endoplasmic-reticulum-localized-coffea-arabica-burp-domain-containing-protein-affects-the-response-of-transgenic-arabidopsis-plants-to-diverse-abiotic-stresses
#16
Sy Nguyen Dinh, Hunseung Kang
The Coffea arabica BURP domain-containing gene plays an important role in the response of transgenic Arabidopsis plants to abiotic stresses via regulating the level of diverse proteins. Although the functions of plant-specific BURP domain-containing proteins (BDP) have been determined for a few plants, their roles in the growth, development, and stress responses of most plant species, including coffee plant (Coffea arabica), are largely unknown. In this study, the function of a C. arabica BDP, designated CaBDP1, was investigated in transgenic Arabidopsis plants...
November 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28774586/utilization-of-chemically-treated-municipal-solid-waste-spent-coffee-bean-powder-as-reinforcement-in-cellulose-matrix-for-packaging-applications
#17
Senthil Muthu Kumar Thiagamani, Rajini Nagarajan, Mohammad Jawaid, Varadarajulu Anumakonda, Suchart Siengchin
As the annual production of the solid waste generable in the form of spent coffee bean powder (SCBP) is over 6 million tons, its utilization in the generation of green energy, waste water treatment and as a filler in biocomposites is desirable. The objective of this article is to analyze the possibilities to valorize coffee bean powder as a filler in cellulose matrix. Cellulose matrix was dissolved in the relatively safer aqueous solution mixture (8% LiOH and 15% Urea) precooled to -12.5°C. To the cellulose solution (SCBP) was added in 5-25wt% and the composite films were prepared by regeneration method using ethyl alcohol as a coagulant...
November 2017: Waste Management
https://www.readbyqxmd.com/read/28771735/polyphenol-content-in-vitro-bioaccessibility-and-antioxidant-capacity-of-widely-consumed-beverages
#18
Gema Baeza, Beatriz Sarriá, Laura Bravo, Raquel Mateos
BACKGROUND: Beverages prepared from antioxidant-rich plants are sources of polyphenols, the bioactivity of which depends on bioaccessibility in the gastrointestinal tract. This work evaluated the polyphenol content and antioxidant capacity of widely consumed beverages such as chamomile tea, yerba mate, a coffee blend (65% roasted: 35% green), and coffee-like substitutes such as chicory, malt and a soluble cereal mixture. Additionally, the bioaccessibility of the two beverages with the highest antioxidant capacity was evaluated using an in vitro digestion model...
August 3, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28765341/coffee-and-green-tea-consumption-and-subsequent-risk-of-malignant-lymphoma-and-multiple-myeloma-in-japan-the-japan-public-health-center-based-prospective-study
#19
Tomotaka Ugai, Keitaro Matsuo, Norie Sawada, Motoki Iwasaki, Taiki Yamaji, Taichi Shimazu, Shizuka Sasazuki, Manami Inoue, Yoshinobu Kanda, Shoichiro Tsugane
Background: The aim of this study was to investigate the association of coffee and green tea consumption and the risk of malignant lymphoma and multiple myeloma in a large-scale population-based cohort study in Japan.Methods: In this analysis, a total of 95,807 Japanese subjects (45,937 men and 49,870 women; ages 40-69 years at baseline) of the Japan Public Health Center-based Prospective Study who completed a questionnaire about their coffee and green tea consumption were followed up until December 31, 2012, for an average of 18 years...
August 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28763994/covering-the-different-steps-of-the-coffee-processing-can-headspace-voc-emissions-be-exploited-to-successfully-distinguish-between-arabica-and-robusta
#20
Ilaria Colzi, Cosimo Taiti, Elettra Marone, Susanna Magnelli, Cristina Gonnelli, Stefano Mancuso
This work was performed to evaluate the possible application of PTR-ToF-MS technique in distinguishing between Coffea arabica (Arabica) and Coffea canephora var. robusta (Robusta) commercial stocks in each step of the processing chain (green beans, roasted beans, ground coffee, brews). volatile organic compounds (VOC) spectra from coffee samples of 7 Arabica and 6 Robusta commercial stocks were recorded and submitted to multivariate statistical analysis. Results clearly showed that, in each stage of the coffee processing, the volatile composition of coffee is highly influenced by the species...
December 15, 2017: Food Chemistry
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