keyword
MENU ▼
Read by QxMD icon Read
search

butylated hydroxytoluene

keyword
https://www.readbyqxmd.com/read/29333386/antioxidant-and-anti-adipogenic-activities-of-trapa-japonica-shell-extract-cultivated-in-korea
#1
DooJin Lee, Ok-Hwan Lee, Geunpyo Choi, Jong Dai Kim
Trapa japonica shell contains phenolic compounds such as tannins. Studies regarding the antioxidant and anti-adipogenic effects of Trapa japonica shell cultivated in Korea are still unclear. Antioxidant and anti-adipogenic activities were measured by in vitro assays such as 2,2-diphenyl-1-picrylhydrazy (DPPH) radical scavenging activity, 2,2'-azinobis( 3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging activity, ferric reducing ability of plasma assay, reducing power, superoxide dismutase-like activity, and iron chelating ability in 3T3-L1 cells...
December 2017: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/29333040/pharmacological-screening-of-trachyspermum-ammi-for-antihyperlipidemic-activity-in-triton-x-100-induced-hyperlipidemia-rat-model
#2
Uzma Saleem, Saba Riaz, Bashir Ahmad, Mohammad Saleem
Background: Mortality rate is increasing due to cardiovascular problems throughout the world. These cardiac problems are directly associated with dyslipidemia. Aim: The aim of this study was to evaluate the antihyperlipidemic effect of aqueous extract and methanol extract of Trachyspermum ammi at 1 g/kg, 3 g/kg, and 5 g/kg dose levels in rats. Materials and Methods: For this purpose, 45 male albino rats were used and randomly divided into nine equal groups (n = 5)...
December 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/29295625/anti-hydroxyl-radical-activity-redox-potential-and-anti-ache-activity-of-amanita-strobiliformis-polysaccharide-extract
#3
Maja Karaman, Ljiljana Janjušević, Dragica Jakovljević, Filip Šibul, Boris Pejin
This study outlines antioxidant and anti-AChE activities of the polysaccharide (PSH) extract from the mushroom species Amanita strobiliformis. Both the presence of α and ß glucans within the aforementioned extract was recorded. PSH extract displayed a profound scavenging activity of OH radicals (IC50 value, 11.86 ± 0.59 μg/mL) and high potential for reduction of Fe3+ ions (174.11 ± 8.70 mg eq. AA/g d.w.) being almost 48- and 5-fold more effective than mannitol and butylated hydroxytoluene used as a positive control, respectively...
January 2, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29276688/hepatoprotective-effect-of-food-preservatives-butylated-hydroxyanisole-butylated-hydroxytoluene-on-carbon-tetrachloride-induced-hepatotoxicity-in-rat
#4
Barsha Dassarma, Dilip K Nandi, Somnath Gangopadhyay, Saptadip Samanta
Carbon tetrachloride (CCl4), a hepatotoxic agent is widely used to study the toxic mechanisms in experimental animals. This study was carried out to establish the hepatoprotective measures of food preservative antioxidants butylated hydroxyanisole and butylated hydroxytolune (BHA, BHT) when mixed with food towards carbon tetrachloride (CCl4) intoxication (230 mg/ kg b wt/rat/day) in rat. Biochemical markers like serum glutamate pyruvate tranaminase (AST), serum glutamate oxaloacetate transaminase (ALT), alkaline phosphatase (ALP) and bilirubin content, antioxidant enzymes such as SOD, CAT, GPx, and malondialdehyde (MDA) as the end product of lipid peroxidanion were measured...
2018: Toxicology Reports
https://www.readbyqxmd.com/read/29236469/synthetic-phenolic-antioxidants-cause-perturbation-in-steroidogenesis-in-vitro-and-in-vivo
#5
Xiaoxi Yang, Wenting Song, Na Liu, Zhendong Sun, Ruirui Liu, Qian S Liu, Qunfang Zhou, Guibin Jiang
Synthetic phenolic antioxidants (SPAs) are closely correlated with human life due to their extensive usages, and increasing concerns have been raised on their biosafety. The previous controversial findings caused continuous debates on their potential endocrine disrupting effects. In the present study, four commonly used SPAs, including butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), tert-butyl hydroquinone (TBHQ) and 2,2'-methylenebis(6-tert-butyl-4-methylphenol) (AO2246), were investigated for their estrogenic effects, and the results from in vitro screening assays showed SPAs themselves had negligible estrogen receptor binding affinities...
December 13, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29205120/synthesis-and-in-vitro-antioxidant-activity-study-of-some-novel-substituted-piperazinyl-flavone-compounds
#6
Elmas Sari, Paweł Berczynski, Aleksandra Kładna, Irena Kruk, Oya B Dundar, Monika Szymanska, Hassan Y Aboul-Enein
BACKGROUND: A new series of 13 piperazinyl flavone derivatives has been synthesized and examined for their in vitro antiradical and antioxidant activities as response to the pharmacy industry's increasing demand for new non-toxic anti-inflammatory and anticancer drugs. METHODS: Their antioxidant activity was evaluated by the reactive oxygen species (ROS) scavenging assays, 2,2-diphenyl-1-picrylhydrazyl free radical (DPPH ) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) radical cation (ABTS+ ) scavenging assays, and the ferric reducing antioxidant potency (TAC) method, and compared to known positive controls, herbal infusions, and penicillins...
December 3, 2017: Medicinal Chemistry
https://www.readbyqxmd.com/read/29205116/antioxidant-activity-%C3%AE-glucosidase-inhibitory-activity-and-chemoprotective-properties-of-rhododendron-brachycarpum-leaves-extracts
#7
Jinfeng Yang, Myeong Ok Kim, Yong Soo Kwon, Myong Jo Kim
BACKGROUND: Rhododendron brachycarpum (RB) is a genus of flowering plants generally used for traditional medicine in Korea to treat hypertension, neuralgia, and sterility. Previous studies have shown that RB extract alleviate inflammation and antimicrobial activity. OBJECTIVE: In this study, the effect of RB and its different fractions (n-hexane, ethyl-acetate and n-butanol) on antioxidant activity, DNA damage prevention and the activity of α-glucosidase were studied...
December 3, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29179555/simultaneous-analysis-of-malondialdehyde-4-hydroxy-2-hexenal-and-4-hydroxy-2-nonenal-in-vegetable-oil-by-reversed-phase-high-performance-liquid-chromatography
#8
Lukai Ma, Guoqin Liu
A group of toxic aldehydes such as, malondialdehyde (MDA), 4-hydroxy-2-hexenal (HHE) and 4-hydroxy-2-nonenal (HNE) have been found in various vegetable oils and oil-based foods. Then simultaneous determination of them holds a great need in both the oil chemistry field and food field. In the present study, a simple and efficient analytical method was successfully developed for the simultaneous separation and detection of MDA, HHE and HNE in vegetable oils by reversed-phase high-performance liquid chromatography (RP-HPLC) coupled with photodiode array detector (PAD) at dual-channel detection mode...
November 27, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29156274/determination-of-2-6-di-tert-butyl-hydroxytoluene-and-its-transformation-products-in-indoor-dust-and-sediment-by-gas-chromatography-mass-spectrometry-coupled-with-precolumn-derivatization
#9
Ruirui Zhang, Chao Li, Yunzi Li, Xinyi Cui, Lena Q Ma
We developed an analytical method to simultaneously determine 2,6-di-tert-butyl-hydroxytoluene (BHT) and its four transformation products in indoor dust and sediment samples. BHT, 2,6-di-tert-butylcyclohexa-2,5-diene-1,4-dione (BHT-Q), and 3,5-di-tert-butyl-4-hydroxybenzaldehyde (BHT-CHO) were measured by gas chromatography-mass spectrometry (GC-MS) after ultrasonic extraction with hexane/dichloromethane (1:3), while 2,6-di-tert-butyl-4-(hydroxymethyl) phenol (BHT-OH) and 3,5-di-tert-butyl-4-hydroxybenzoic acid (BHT-COOH) were derivatized using N, O-bis (trimethylsilyl) trifluoroacetamide before GC-MS analysis...
November 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29142396/antioxidant-and-cholinesterase-inhibitory-activities-of-ethyl-acetate-extract-of-terminalia-chebula-cell-free-in-vitro-and-in-silico-studies
#10
Mohamed Asik Rajmohamed, Suganthy Natarajan, Premkumar Palanisamy, Akbarsha Mohammad Abdulkader, Archunan Govindaraju
Background: Alzheimer's disease (AD) is a progressive neurodegenerative disorder clinically characterized by memory loss and impaired cognitive function. Cholinergic enzyme deficiency and oxidative stress are the two major factors implicated in the pathogenesis of AD. The symptomatic treatment, as of now, is the use of cholinesterase inhibitors toward cholinergic "downturn." Therefore, there is a search for compounds that will be useful in focused therapies. There has been suggestion that Terminalia chebula fruit would be a potential source...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29127425/the-effects-of-vitamin-e-or-lipoic-acid-supplementation-on-oxyphytosterols-in-subjects-with-elevated-oxidative-stress-a-randomized-trial
#11
Sabine Baumgartner, Ronald P Mensink, Guido R Haenen, Aalt Bast, Christoph J Binder, Otto Bekers, Constanze Husche, Dieter Lütjohann, Jogchum Plat
Despite increased serum plant sterol concentrations after consumption of plant sterol enriched margarines, plasma oxyphytosterol concentrations were not increased in healthy subjects. Here, we assessed plasma oxyphytosterol concentrations and whether they are affected by antioxidants in subjects with elevated oxidative stress. Twenty subjects with impaired glucose tolerance (IGT) or type 2 diabetes (DM2) consumed for 4 weeks placebo, vitamin E (804 mg/d) or lipoic acid capsules (600 mg/d). Plasma and blood cell oxyphytosterol and oxycholesterol concentrations were determined in butylated hydroxytoluene-enriched EDTA plasma via GC-MS...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29108969/dietary-butylated-hydroxytoluene-improves-lipid-metabolism-antioxidant-and-anti-apoptotic-response-of-largemouth-bass-micropterus-salmoides
#12
L L Yu, H H Yu, X F Liang, N Li, X Wang, F H Li, X F Wu, Y H Zheng, M Xue, X F Liang
A 10-week growth trail was conducted to investigate the efficacy and tolerance of dietary butylated hydroxytoluene (BHT) by evaluating inflammation, apoptosis and hepatic disease related to oxidative stress in largemouth bass (Micropterus salmoides). Four experimental diets were prepared with BHT supplement levels of 0 (B0), 150 (B150), 300 (B300) and 1500 (B1500) mg/kg, in which B150 was at the maximum recommended level established by European Union Regulation, and the B300 and B1500 levels were 2 and 10-fold of B150, respectively...
November 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29096095/enzymatic-synthesis-of-1-3-dihydroxyphenylacetoyl-sn-glycerol-optimization-by-response-surface-methodology-and-evaluation-of-its-antioxidant-and-antibacterial-activities
#13
Nadia Kharrat, Imen Aissa, Youssef Dgachi, Fatma Aloui, Fakher Chabchoub, Mohamed Bouaziz, Youssef Gargouri
In this study, the enzymatic synthesis of phenylacetoyl glycerol ester was carried out as a response to the increasing consumer demand for natural compounds. 1,3-dihydroxyphenylacetoyl-sn-Glycerol (1,3-di-HPA-Gly), labeled as "natural" compound with interesting biological properties, has been successfully synthesized for the first time in good yield by a direct esterification of glycerol (Gly) with p-hydroxyphenylacetic acid (p-HPA) using immobilized Candida antarctica lipase as a biocatalyst. Spectroscopic analyses of purified esters showed that the glycerol was mono- or di-esterified on the primary hydroxyl group...
October 23, 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29090445/release-of-particles-organic-compounds-and-metals-from-crumb-rubber-used-in-synthetic-turf-under-chemical-and-physical-stress
#14
Silvia Canepari, Paola Castellano, Maria Luisa Astolfi, Stefano Materazzi, Riccardo Ferrante, Dennis Fiorini, Roberta Curini
The chemical and morphological characteristics of materials released under chemical and physical stress by different rubber granulates used as infill materials in synthetic turf (recycled scrap tires, natural rubber, and a new-generation thermoplastic elastomer) were compared.The headspace solid-phase micro-extraction GC-MS analysis evidenced that at 70 °C natural rubber and thermoplastic elastomer release amounts of organic species much higher than recycled scrap tires. In particular, the desorption of mineral oils, with a prevalence of toxicologically relevant low-viscosity alkanes in the range C17-C22, and plasticizers (diisobutyl phthalate) was clearly evidenced...
October 31, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29054439/effect-of-storage-time-temperature-antioxidant-and-thawing-on-fatty-acid-composition-of-plasma-serum-and-red-blood-cells-a-pilot-biobank-study
#15
Pedro Araujo, Tormod Bjørkkjær, Livar Frøyland, Rune Waagbø
BACKGROUND: It studies on the factors that affect the stability of fatty acid profiles from human blood specimens are generally performed by evaluating the effect of a single factor on an individual fatty acid and excluding a considerable amount of data from the total fatty acid profiles. METHODS: The stability of fatty acids from plasma, serum and red blood cells (RBC) was evaluated in terms of time, temperature, antioxidant and thawing. The fatty acids were methylated and analyzed by gas chromatography...
October 18, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/29037740/antioxidant-activity-of-rosemary-essential-oil-fractions-obtained-by-molecular-distillation-and-their-effect-on-oxidative-stability-of-sunflower-oil
#16
Gabriela N Mezza, Ana V Borgarello, Nelson R Grosso, Héctor Fernandez, María C Pramparo, María F Gayol
The objective of this study was to evaluate the antioxidant activity of rosemary essential oil fractions obtained by molecular distillation (MD) and investigate their effect on the oxidative stability of sunflower oil. MD fractions were prepared in a series of low-pressure stages where rosemary essential oil was the first feed. Subsequently, a distillate (D1) and residue (R1) were obtained and the residue fraction from the previous stage used as the feed for the next. The residue fractions had the largest capacity to capture free radicals, and the lowest peroxide values, conjugated dienes and conjugated trienes...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28964951/vincristine-loaded-liposomes-prepared-by-ion-paring-techniques-effect-of-lipid-ph-and-antioxidant-on-chemical-stability
#17
Yunning Yang, Yuting Guo, Xinyi Tan, Haibing He, Yu Zhang, Tian Yin, Hui Xu, Xing Tang
In the present study, vincristine (VCR)-loaded liposomes were designed by ion-pairing techniques and the model could be applied to investigate the effect of lipids on the degradation of vinca alkaloids, and how to weaken their influence by adjusting pH and adding antioxidants. It was found that there was a positive correlation between degree of degradation and the unsaturation extent of the phospholipids. In the phospholipid with the lowest oxidation index, only 6% of VCR was degraded in 6days at 37°C, whereas for the phospholipids with highest oxidation index, the degradation reached above 95% over the same time...
September 28, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28953235/comparative-evaluation-of-polyphenol-contents-and-antioxidant-activities-between-ethanol-extracts-of-vitex-negundo-and-vitex-trifolia-l-leaves-by-different-methods
#18
Sarla Saklani, Abhay Prakash Mishra, Harish Chandra, Maria Stefanova Atanassova, Milan Stankovic, Bhawana Sati, Mohammad Ali Shariati, Manisha Nigam, Mohammad Usman Khan, Sergey Plygun, Hicham Elmsellem, Hafiz Ansar Rasul Suleria
The in vitro antioxidant potential assay between ethanolic extracts of two species from the genus Vitex (Vitex negundo L. and Vitex trifolia L.) belonging to the Lamiaceae family were evaluated. The antioxidant properties of different extracts prepared from both plant species were evaluated by different methods. DPPH scavenging, nitric oxide scavenging, and β-carotene-linoleic acid and ferrous ion chelation methods were applied. The antioxidant activities of these two species were compared to standard antioxidants such as butylated hydroxytoluene (BHT), ascorbic acid, and Ethylene diamine tetra acetic acid (EDTA)...
September 27, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28942679/highly-oxygenated-antioxidative-2h-chromen-derivative-from-the-red-seaweed-gracilaria-opuntia-with-pro-inflammatory-cyclooxygenase-and-lipoxygenase-inhibitory-properties
#19
Fasina Makkar, Kajal Chakraborty
Phytochemical investigation of the thalli of ethyl acetate-methanol extract of the red seaweed Gracilaria opuntia led to isolation of a substituted 2H-chromen derivative of unusual structure possessing highly oxygenated carbon skeleton, characterised as 2-acetoxy-2-(5-acetoxy-4-methyl-2-oxotetrahydro-2H-pyran-4-yl)ethyl 4-(3-methoxy-2-(methoxymethyl)-7-methyl-3,4,4a,7,8,8a-hexahydro-2H-chromen-4-yloxy)-5-methylheptanoate, which have not been reported in nature. The chemical structure was resolved by detailed spectroscopic analysis...
September 25, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28937585/phytochemicals-extraction-isolation-and-identification-of-bioactive-compounds-from-plant-extracts
#20
REVIEW
Ammar Altemimi, Naoufal Lakhssassi, Azam Baharlouei, Dennis G Watson, David A Lightfoot
There are concerns about using synthetic phenolic antioxidants such as butylated hydroxytoluene (BHT) and butylated hydroxyanisole (BHA) as food additives because of the reported negative effects on human health. Thus, a replacement of these synthetics by antioxidant extractions from various foods has been proposed. More than 8000 different phenolic compounds have been characterized; fruits and vegetables are the prime sources of natural antioxidants. In order to extract, measure, and identify bioactive compounds from a wide variety of fruits and vegetables, researchers use multiple techniques and methods...
September 22, 2017: Plants (Basel, Switzerland)
keyword
keyword
40593
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"