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https://www.readbyqxmd.com/read/29343711/silver-nanoparticles-in-the-water-environment-in-malaysia-inspection-characterization-removal-modeling-and-future-perspective
#1
Achmad Syafiuddin, Salmiati Salmiati, Tony Hadibarata, Ahmad Beng Hong Kueh, Mohd Razman Salim, Muhammad Abbas Ahmad Zaini
The current status of silver nanoparticles (AgNPs) in the water environment in Malaysia was examined and reported. For inspection, two rivers and two sewage treatment plants (STPs) were selected. Two activated carbons derived from oil palm (ACfOPS) and coconut (ACfCS) shells were proposed as the adsorbent to remove AgNPs. It was found that the concentrations of AgNPs in the rivers and STPs are in the ranges of 0.13 to 10.16 mg L-1 and 0.13 to 20.02 mg L-1, respectively, with the highest concentration measured in July...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29310314/determination-of-silicon-in-biomass-and-products-of-pyrolysis-process-via-high-resolution-continuum-source-atomic-absorption-spectrometry
#2
Flávio V Nakadi, Caroline Prodanov, Wiliam Boschetti, Maria Goreti R Vale, Bernhard Welz, Jailson B de Andrade
Thermochemical processes can convert the biomass into fuels, such as bio-oil. The biomass submitted to pyrolysis process, such as fibers, are generally rich in silicon, an element that can lead to damages in an engine when there is high concentration in a fuel. High-resolution continuum source atomic absorption spectrometry (HR-CS AAS) is an interesting alternative for Si determination in the products and byproducts of the pyrolysis process because, besides the flame (F) and graphite furnace (GF) atomizers, it has enhanced the application of direct analysis of solid samples (SS) within GF...
March 1, 2018: Talanta
https://www.readbyqxmd.com/read/29287320/effect-of-ripening-inhibitor-type-on-formation-stability-and-antimicrobial-activity-of-thyme-oil-nanoemulsion
#3
Victor Ryu, David J McClements, Maria G Corradini, Lynne McLandsborough
The objective of this research was to study the impact of ripening inhibitor level and type on the formation, stability, and activity of antimicrobial thyme oil nanoemulsions formed by spontaneous emulsification. Oil-in-water antimicrobial nanoemulsions (10 wt%) were formed by titrating a mixture of essential oil, ripening inhibitor, and surfactant (Tween 80) into 5 mM sodium citrate buffer (pH 3.5). Stable nanoemulsions containing small droplets (d < 70 nm) were formed. The antimicrobial activity of the nanoemulsions decreased with increasing ripening inhibitor concentration which was attributed to a reduction in the amount of hydrophobic antimicrobial constituents transferred to the separated hydrophobic domain, mimicking bacterial cell membranes, by using dialysis and chromatography...
April 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29284028/a-microfluidic-thermometer-precise-temperature-measurements-in-microliter-and-nanoliter-scale-volumes
#4
Brittney A McKenzie, William H Grover
Measuring the temperature of a sample is a fundamental need in many biological and chemical processes. When the volume of the sample is on the microliter or nanoliter scale (e.g., cells, microorganisms, precious samples, or samples in microfluidic devices), accurate measurement of the sample temperature becomes challenging. In this work, we demonstrate a technique for accurately determining the temperature of microliter volumes using a simple 3D-printed microfluidic chip. We accomplish this by first filling "microfluidic thermometer" channels on the chip with substances with precisely known freezing/melting points...
2017: PloS One
https://www.readbyqxmd.com/read/29259829/antibacterial-activity-of-free-fatty-acids-from-hydrolyzed-virgin-coconut-oil-using-lipase-from-candida-rugosa
#5
Van Thi Ai Nguyen, Truong Dang Le, Hoa Ngoc Phan, Lam Bich Tran
Free fatty acids (FFAs) were obtained from hydrolyzed virgin coconut oil (VCO) by Candida rugosa lipase (CRL). Four factors' influence on hydrolysis degree (HD) was examined. The best hydrolysis conditions in order to get the highest HD value were determined at VCO to buffer ratio 1 : 5 (w/w), CRL concentration 1.5% (w/w oil), pH 7, and temperature 40°C. After 16 hours' reaction, the HD value achieved 79.64%. FFAs and residual hydrolyzed virgin coconut oil (HVCO) were isolated from the hydrolysis products...
2017: Journal of Lipids
https://www.readbyqxmd.com/read/29250753/the-purification-and-characterization-of-lipases-from-lasiodiplodia-theobromae-and-their-immobilization-and-use-for-biodiesel-production-from-coconut-oil
#6
Balaji Venkatesagowda, Ebenezer Ponugupaty, Aneli M Barbosa-Dekker, Robert F H Dekker
The coconut kernel-associated fungus, Lasiodiplodia theobromae VBE1, was grown on coconut cake with added coconut oil as lipase inducer under solid-state fermentation conditions. The extracellular-produced lipases were purified and resulted in two enzymes: lipase A (68,000 Da)-purified 25.41-fold, recovery of 47.1%-and lipase B (32,000 Da)-purified 18.47-fold, recovery of 8.2%. Both lipases showed optimal activity at pH 8.0 and 35 °C, were activated by Ca2+, exhibited highest specificity towards coconut oil and p-nitrophenyl palmitate, and were stable in iso-octane and hexane...
December 18, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/29247959/triacylglycerol-hand-shape-profile-of-argan-oil-rapid-and-simple-uhplc-pda-esi-tof-ms-and-hptlc-methods-to-detect-counterfeit-argan-oil-and-argan-oil-based-products
#7
Giordana Pagliuca, Carlotta Bozzi, Francesca Romana Gallo, Giuseppina Multari, Giovanna Palazzino, Rita Porrà, Alessia Panusa
The marketing of new argan-based products is greatly increased in the last few years and consequently, it has enhanced the number of control analysis aimed at detecting counterfeit products claiming argan oil as a major ingredient. Argan oil is produced in Morocco and it is quite expensive. Two simple methods for the rapid screening of pure oil and argan-oil based products, focused on the analysis of the triacylglycerol profile, have been developed. A three-minute-run by UHPLC-PDA allows the identification of a pure argan oil, while the same run with the MS detector allows also the analysis of products containing the oil down to 0...
December 2, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29230854/adjuvant-potential-of-virgin-coconut-oil-extract-on-antiretroviral-therapy-induced-testicular-toxicity-an-ultrastructural-study
#8
O O Ogedengbe, A I Jegede, I O Onanuga, U Offor, A I Peter, E N Akang, E C S Naidu, O O Azu
The effects of Virgin coconut oil as an adjuvant to highly active antiretroviral therapy (HAART) were investigated on the testicular ultrastructure and biochemical markers in rats. Twenty male Sprague-Dawley rats, weighing 153-169 g were divided into four groups and treated as follows: control A (distilled water), B (HAART), C (HAART+Virgin coconut oil 10 ml/kg) and D (Virgin coconut oil [VCO] 10 ml/kg). Testicular segments were evaluated using transmission electron microscopy. Serum was assayed for testosterone, luteinising hormone, follicle stimulating hormone and testicular tissue for malondialdehyde and glutathione...
December 12, 2017: Andrologia
https://www.readbyqxmd.com/read/29226031/sodium-salt-medium-chain-fatty-acids-and-bacillus-based-probiotic-strategies-to-improve-growth-and-intestinal-health-of-gilthead-sea-bream-sparus-aurata
#9
Paula Simó-Mirabet, M Carla Piazzon, Josep Alvar Calduch-Giner, Álvaro Ortiz, Mónica Puyalto, Ariadna Sitjà-Bobadilla, Jaume Pérez-Sánchez
Background: The increased demand for fish protein has led to the intensification of aquaculture practices which are hampered by nutritional and health factors affecting growth performance. To solve these problems, antibiotics have been used for many years in the prevention, control and treatment against disease as well as growth promoters to improve animal performance. Nowadays, the use of antibiotics in the European Union and other countries has been completely or partially banned as a result of the existence of antibiotic cross-resistance...
2017: PeerJ
https://www.readbyqxmd.com/read/29224791/antioxidant-and-anti-inflammatory-effects-of-virgin-coconut-oil-supplementation-abrogate-acute-chemotherapy-oxidative-nephrotoxicity-induced-by-anticancer-drug-methotrexate-in-rats
#10
Ademola C Famurewa, Patrick M Aja, Ekenechukwu K Maduagwuna, Chima A Ekeleme-Egedigwe, Odomero G Ufebe, Sharon O Azubuike-Osu
BACKGROUND: Methotrexate (MTX) is an efficacious anticancer agent constrained in clinical use due to its toxicity on non-targeted tissue, a considerable source of worry to clinicians. Because the toxicity is associated with oxidative stress and inflammation, the study explored antioxidant and anti-inflammatory effect of virgin coconut oil (VCO) supplementation in nephrotoxicity induced by MTX in rats. METHODS: Rats were randomized into 4 groups (n=6) as follows: Control group; MTX group injected with single dose of MTX (20mg/kg, ip) on day 14; VCO (5%)+MTX and VCO (15%)+MTX groups were pre-treated with VCO diet and injected with single dose of MTX (20mg/kg, ip) on day 14...
December 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29207824/comparative-evaluation-of-antiplaque-efficacy-of-coconut-oil-pulling-and-a-placebo-among-dental-college-students-a-randomized-controlled-trial
#11
Jithender Nagilla, Suhas Kulkarni, Padma Reddy Madupu, Dolar Doshi, Srikanth Reddy Bandari, Adepu Srilatha
Introduction: Oil pulling, has been extensively used as traditional Indian folk remedy since many years to prevent dental diseases and for strengthening teeth and gums. Aim: To compare and evaluate antiplaque efficacy of coconut oil pulling with a placebo among dental students, in Hyderabad city of India. Materials and Methods: A randomized controlled study was carried out among 40 dental students. Out of 40, 20 subjects were randomly assigned to study group and other 20 to control group...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29197867/topical-coconut-oil-in-very-preterm-infants-an-open-label-randomised-controlled-trial
#12
Tobias Strunk, Sameer Pupala, Julie Hibbert, Dorota Doherty, Sanjay Patole
BACKGROUND: The immature fragile skin of preterm infants represents an inadequate protective barrier. The emollient and anti-infective properties of coconut oil make it a potentially beneficial topical agent for this population. OBJECTIVES: Our aim was to evaluate feasibility, safety, and the effects of topical coconut oil on skin condition in very preterm infants. METHODS: An open-label randomised controlled trial in preterm infants <30 weeks' gestation was conducted...
December 1, 2017: Neonatology
https://www.readbyqxmd.com/read/29188860/a-keto-mediet-approach-with-coconut-substitution-and-exercise-may-delay-the-onset-of-alzheimer-s-disease-among-middle-aged
#13
B C Perng, M Chen, J C Perng, P Jambazian
BACKGROUND: Coconut oil has been widely used to improve health because there is much information available by word of mouth, in books, and on the internet. However, researchers still continue to search for the best diets to improve the quality of life, especially for people with cognitive decline. OBJECTIVES: The aim of this review is to develop a novel dietary approach, the Keto-Mediet, which may help prevent the onset of Alzheimer's disease. METHODS: Evidence gained through literature review from 1982 to 2015 on gene-by-diet interaction and lipid and glucose metabolism in the brains of Alzheimer's patients is converted into the new Keto-Mediet approach...
2017: Journal of Prevention of Alzheimer's Disease
https://www.readbyqxmd.com/read/29184560/volatile-metabolomic-composition-of-vitex-species-chemodiversity-insights-and-acaricidal-activity
#14
José G de Sena Filho, Ighor C Barreto, Avaldo O Soares Filho, Paulo C L Nogueira, Adenir V Teodoro, Ana V Cruz da Silva, Haroudo S Xavier, Allívia R C Rabbani, Daniel J Spakowicz, Jennifer M Duringer
The Vitex genus (Lamiaceae) produces a plethora of metabolites that include ecdysteroids and terpenoids, some of which have demonstrated insect repellent properties. The volatile composition of several members of this genus has not been chemically defined, as many taxa are endemic to remote ecosystems. In this study, leaves were collected from the northeast of Brazil from Vitex capitata, V. megapotamica, V. gardneriana, and V. rufescens plants and examined for their chemical profile via GC-MS/FID of essential oil extracts...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29156154/coconut-phytocompounds-inhibits-polyol-pathway-enzymes-implication-in-prevention-of-microvascular-diabetic-complications
#15
Devi Lekshmi Sheela, Puthiyaveetil Abdulla Nazeem, Arunaksharan Narayanankutty, R Muthangaparambil Shylaja, Sangeetha P Davis, Priyanga James, Ravisankar Valsalan, Thekkekara Devassy Babu, Achuthan C Raghavamenon
Coconut oil (CO), the primary choice of cooking purposes in the south Asian countries, is rich in medium chain saturated fatty acids, especially lauric acid (50-52%). The oil has high medicinal use in Ayurvedic system and known to contain polyphenolic antioxidants. Studies have reported that CO improves insulin sensitivity and shows hypoglycemic effect. However, there is no information regarding its effect on chronic diabetic complications including retinopathy and nephropathy is available. The secondary diabetic complications are mediated by the activation of polyol pathway, where aldose reductase (AR) plays crucial role...
December 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/29151890/techno-economic-and-resource-analysis-of-hydroprocessed-renewable-jet-fuel
#16
Ling Tao, Anelia Milbrandt, Yanan Zhang, Wei-Cheng Wang
Background: Biomass-derived jet fuel is an alternative jet fuel (AJF) showing promise of reducing the dependence on fossil fuel and greenhouse gas emissions. Hydroprocessed esters and fatty acids (HEFA) concept is also known as one of the pathways for producing bio jet fuel. HEFA fuel was approved by the American Society for Testing and Materials in 2011, and can be blended up to 50% with conventional jet fuel. Since then, several HEFA economic and life-cycle assessments have been published in literature...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29128745/a-new-method-for-determination-of-cocamidopropyl-betaine-synthesized-from-coconut-oil-through-spectral-shift-of-eriochrome-black-t
#17
Ali Gholami, Mahshid Golestaneh, Zeinab Andalib
Cocamidopropyl betaine (CAPB) is a zwitterionic surfactant that is synthesized using coconut oil and usually supplied in form of an aqueous solution with 25-37% w/w. In this study, a novel method based on UV-visible spectroscopy is developed for an accurate determination of CAPB synthesized from coconut oil. Eriochrome Black T (EBT) as a specific color indicator was added to CAPB and a red shift and color change were observed. This shift leads in increasing wavelength selectivity of the method. The change in the color intensity depends on the concentration of CAPB...
November 9, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29118979/the-effects-of-starter-microbiota-and-the-early-life-feeding-of-medium-chain-triglycerides-on-the-gastric-transcriptome-profile-of-2-or-3-week-old-cesarean-delivered-piglets
#18
Paolo Trevisi, Davide Priori, Vincenzo Motta, Diana Luise, Alfons J M Jansman, Sietse-Jan Koopmans, Paolo Bosi
Background: The stomach is an underestimated key interface between the ingesta and the digestive system, affecting the digestion and playing an important role in several endocrine functions. The quality of starter microbiota and the early life feeding of medium chain triglycerides may affect porcine gastric maturation. Two trials (T1, T2) were carried out on 12 and 24 cesarean-delivered piglets (birth, d0), divided over two microbiota treatments, but slaughtered and sampled at two or three weeks of age, respectively...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/29081890/role-of-diet-and-nutritional-supplements-in-parkinson-s-disease-progression
#19
Laurie K Mischley, Richard C Lau, Rachel D Bennett
OBJECTIVES: The goal of this study is to describe modifiable lifestyle variables associated with reduced rate of Parkinson's disease (PD) progression. METHODS: The patient-reported outcomes in PD (PRO-PD) were used as the primary outcome measure, and a food frequency questionnaire (FFQ) was used to assess dietary intake. In this cross-sectional analysis, regression analysis was performed on baseline data to identify the nutritional and pharmacological interventions associated with the rate of PD progression...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29071233/effect-of-addition-of-antifungal-agents-on-physical-and-biological-properties-of-a-tissue-conditioner-an-in-vitro-study
#20
Pragati Rawat, Swatantra Agarwal, Siddhi Tripathi
Purpose: Tissue conditioners are used for healing of abused oral tissues. They may harbour microorganisms causing oral diseases such as candidiasis compromising the health of the patient. Also, addition of antifungal agents into tissue conditioner may alter its properties. This study compares the anti-fungal property and mechanical properties of tissue conditioner containing different antifungal agents. Methods: Three antifungal agents, one synthetic - fluconazole, and two natural - oregano oil and virgin coconut oil were added into the tissue conditioner (Viscogel) in different concentrations...
September 2017: Advanced Pharmaceutical Bulletin
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