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https://www.readbyqxmd.com/read/28822032/synthesis-of-rigid-polyurethane-foams-from-phosphorylated-biopolyols
#1
Juan Carlos de Haro, Daniel López-Pedrajas, Ángel Pérez, Juan Francisco Rodríguez, Manuel Carmona
Renewable resources are playing a key role on the synthesis of biodegradable polyols. Moreover, the incorporation of covalently linked additives is increasing in importance in the polyurethane (PU) market. In this work, previously epoxidized grape seed oil and methyl oleate were transformed into phosphorylated biopolyols through an acid-catalyzed ring-opening hydrolysis in the presence of H3PO4. The formation of phosphate polyesters was confirmed by FT-IR and (31)P-NMR. However, the synthesis of a high-quality PU rigid foam was not possible using exclusively these polyols attending to their low hydroxyl value...
August 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28776625/self-assembled-colloidal-complexes-of-polyphenol-gelatin-and-their-stabilizing-effects-on-emulsions
#2
Yu Huang, Aijun Li, Chaoying Qiu, YingLai Teng, Yong Wang
This research studies the in-depth characteristics including the binding interactions and morphological structure of tannic acid (TA)/grape seed proanthocyanidins (GSP) and gelatin (GLT) colloidal complexes, and evaluated the stability and lipid oxidation of emulsions formed by the colloidal complexes. Polyphenol and GLT (1.2 wt%) self-assembled complexes were fabricated by varying the mass ratio (1 : 16, 1 : 8 and 1 : 4) and pH in the range of 3-7. TA and GSP can form stable colloidal complexes with GLT at the nanoscale at pH 6, as shown by the particle size results, and the complexes exhibited a spherical morphology as seen by transmission electron microscopy...
August 4, 2017: Food & Function
https://www.readbyqxmd.com/read/28740279/effect-of-harvest-time-on-physico-chemical-properties-and-bioactive-compounds-of-pulp-and-seeds-of-grape-varieties
#3
Mehmet Musa Özcan, Fahad Al Juhaimi, Mehmet Gülcü, Nurhan Uslu, Ümit Geçgel, Kashif Ghafoor, Nesim Dursun
In this study, physicochemical properties and bioactive compounds of three grape varieties (Cardinal, Müşküle and Razaki) harvested at the three different harvest times (on time, one and two weeks earlier) were investigated. The highest antioxidant activity, total phenolic and flavonoid contents were observed in Razaki pulp and these were 82.854%, 127.422 mg/100 g, 3.873 mg/g, respectively. The contents of bioactive compounds in grape seeds were found higher than those in pulps. Similarly, seed of Razaki had higher antioxidant activity (91...
July 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28734610/towards-integral-utilization-of-grape-pomace-from-winemaking-process-a-review
#4
REVIEW
Carolina Beres, Gislaine N S Costa, Ignacio Cabezudo, Nina K da Silva-James, Aline S C Teles, Ana P G Cruz, Caroline Mellinger-Silva, Renata V Tonon, Lourdes M C Cabral, Suely P Freitas
Grape is the main fruit crop in several countries. Although many grape-based food products can be found in the market, studies have shown that around 75% of the world grape production is destined for the wine industry. Grape pomace is an abundant by-product from the wine industry, which consists of the remaining skin, seeds and stalks and represents around 25% of total grape weight used in the winemaking process. In countries such as Italy, France and Spain, where wine production is more relevant, the annual grape pomace generation can reach nearly 1200 tonnes per year...
July 19, 2017: Waste Management
https://www.readbyqxmd.com/read/28720935/technological-options-to-control-quality-of-fish-burgers
#5
A Danza, A Conte, M A Del Nobile
This research was focused on preservation strategies applied to develop fish burgers enriched with tomato flour and extra-virgin olive oil. The effects of three different gas mixtures (5:95 O2/CO2; 10:60:30 O2/CO2/N2 and 5:50:45 O2/CO2/N2) on burger quality were analyzed by monitoring microbial cell load of main spoilage microorganisms, pH and sensory properties. As expected, modified atmosphere packaging significantly affected mesophilic bacteria with a reduction of about 2 log cycles for samples under 5% O2 and 95% CO2...
June 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28713708/the-healing-effect-of-grape-seed-oil-enema-with-or-without-sesame-oil-in-acetic-acid-induced-ulcerative-colitis-of-rats
#6
Fatemeh Hosseinzadeh, Moosa Salehi, Nader Tanideh, Davood Mehrabani, Azadeh Sayarifard, Anahita Sedighi
BACKGROUND: Inflammatory bowel diseases contain two digestive system diseases, ulcerative colitis (UC) and Crohn's disease with unclear causes. The aim of present study was to investigate the therapeutic effects of administration of the Sesame oil (SO) and grape seed oil (GSO) as enema route in rats suffering from experimental acetic acid induced UC. METHODS: Eighty male rats were randomly allocated into 8 equal groups as health control (HC1) without any disease treated with 1 ml of normal saline as enema; HC2 received SO; HC3 received GSO; negative control (NC) with induced UC receiving 1 ml of normal saline as enema; and positive control (PC) with induced UC treated by asacol...
May 2017: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/28315767/the-properties-of-chitosan-and-gelatin-films-incorporated-with-ethanolic-red-grape-seed-extract-and-ziziphora-clinopodioides-essential-oil-as-biodegradable-materials-for-active-food-packaging
#7
Yasser Shahbazi
The aim of this study was to improve different characteristics including antibacterial, antioxidant, physical and mechanical properties of chitosan (Ch) and gelatin (Ge) films by incorporating Ziziphora clinopodioides essential oil (ZEO; 0 and 1% v/w) and ethanolic grape seed extract (GSE; 0 and 1% v/w). The main compounds of the ZEO were carvacrol (65.22%) and thymol (19.51%). According to our findings, addition of aforementioned materials could improve total phenolic content, antibacterial and antioxidant activities, thickness and also water vapor barrier property...
June 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28300023/optimization-and-validation-of-a-residue-analysis-method-for-glyphosate-glufosinate-and-their-metabolites-in-plant-matrixes-by-liquid-chromatography-with-tandem-mass-spectrometry
#8
Dasharath P Oulkar, Sandip Hingmire, Arnab Goon, Manjusha Jadhav, Bharat Ugare, Ahammed Shabeer Thekkumpurath, Kaushik Banerjee
A sensitive and accurate LC with tandem MS (MS/MS)-based method was developed and validated for the analysis of the herbicide glyphosate, its metabolite aminomethylphosphonic acid (AMPA), and glufosinate after derivatization with 9-fluorenylmethyl chloroformate (FMOC-Cl) in various plant matrixes. The method also covers direct analysis of the glufosinate metabolites 3-methylphosphinicopropionic acid (3-MPPA) and N-acetyl-glufosinate (NAG). The homogenized samples were extracted with 0.1% formic acid in water-dichloromethane (50 + 50)...
May 1, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28260647/a-lipidomic-study-on-the-regulation-of-inflammation-and-oxidative-stress-targeted-by-marine-%C3%AF-3-pufa-and-polyphenols-in-high-fat-high-sucrose-diets
#9
Gabriel Dasilva, Manuel Pazos, Eduardo García-Egido, José M Gallardo, Sara Ramos-Romero, Josep Lluís Torres, Marta Romeu, María-Rosa Nogués, Isabel Medina
The ability of polyphenols to ameliorate potential oxidative damage of ω-3 PUFAs when they are consumed together and then, to enhance their potentially individual effects on metabolic health is discussed through the modulation of fatty acids profiling and the production of lipid mediators. For that, the effects of the combined consumption of fish oils and grape seed procyanidins on the inflammatory response and redox unbalance triggered by high-fat high-sucrose (HFHS) diets were studied in an animal model of Wistar rats...
May 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28117688/lipidomic-and-antioxidant-response-to-grape-seed-corn-and-coconut-oils-in-healthy-wistar-rats
#10
COMPARATIVE STUDY
Abraham Wall-Medrano, Laura A de la Rosa, Alma A Vázquez-Flores, Gilberto Mercado-Mercado, Rogelio González-Arellanes, José A López-Díaz, Aarón F González-Córdova, Gustavo A González-Aguilar, Belinda Vallejo-Cordoba, Francisco J Molina-Corral
Specialty oils differ in fatty acid, phytosterol and antioxidant content, impacting their benefits for cardiovascular health. The lipid (fatty acid, phytosterol) and antioxidant (total phenolics, radical scavenging capacity) profiles of grapeseed (GSO), corn (CO) and coconut (CNO) oils and their physiological (triacylglycerides, total and HDL-cholesterol and antioxidant capacity (FRAP) in serum and fatty acid and phytosterol hepatic deposition) and genomic (HL, LCAT, ApoA-1 and SR-BP1 mRNA hepatic levels) responses after their sub-chronic intake (10% diet for 28 days) was examined in healthy albino rats...
January 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28111767/effect-of-shortening-replacement-with-oleogels-on-the-rheological-and-tomographic-characteristics-of-aerated-baked-goods
#11
Jeongtaek Lim, Sungmin Jeong, JaeHwan Lee, Sungkwon Park, Jonggil Lee, Suyong Lee
BACKGROUND: A great deal of effort has been made to reduce the use of shortening owing to the high level of saturated fats as well as the presence of trans fats. Grape seed oil high in unsaturated fats was structured with candelilla wax to form solid-like oleogels that were utilized as a shortening replacer in aerated baked goods, specifically muffins. RESULTS: Muffin batters with greater amounts of oleogels exhibited lower viscosity, greater shear-thinning behavior and less elastic nature...
January 23, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27990170/evaluation-of-wound-healing-properties-of-grape-seed-sesame-and-fenugreek-oils
#12
Dorsaf Moalla Rekik, Sameh Ben Khedir, Kamilia Ksouda Moalla, Naziha Grati Kammoun, Tarek Rebai, Zouheir Sahnoun
Background. Medicinal plants have proved at all times to be a powerful remedy for health care. Accordingly, grape seed, sesame, and fenugreek extracted oils with pharmacological properties are investigated as wound treatments. This study assesses the potential of our oils for healing wounds induced on rats. Methods. Phytochemical analyses of oils have involved: quality value, polyphenol, chlorophylls, carotene, and fatty acids. Antibacterial activity was carried out. Antioxidant activity was evaluated: the scavenging effect on DPPH radicals, the reducing power, and β-carotene discoloration...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27987185/cloning-characterization-and-expression-analysis-of-a-gene-encoding-a-putative-lysophosphatidic-acid-acyltransferase-from-seeds-of-paeonia-rockii
#13
Qing-Yu Zhang, Li-Xin Niu, Rui Yu, Xiao-Xiao Zhang, Zhang-Zhen Bai, Ke Duan, Qing-Hua Gao, Yan-Long Zhang
Tree peony (Paeonia section Moutan DC.) is an excellent woody oil crop, and the cloning and functional analysis of genes related to fatty acid (FA) metabolism from this organism has not been reported. Lysophosphatidic acid acyltransferase (LPAAT), which converts lysophosphatidic acid (LPA) to phosphatidic acid (PA), catalyzes the addition of fatty acyl moieties to the sn-2 position of the LPA glycerol backbone in triacylglycerol (TAG) biosynthesis. This project reports a putative lysophosphatidic acid acyltransferase gene PrLPAAT1 isolated from Paeonia rockii...
June 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27873332/monitoring-of-compositional-changes-during-berry-ripening-in-grape-seed-extracts-of-cv-sangiovese-vitis-vinifera-l
#14
Giuseppe Bombai, Federica Pasini, Vito Verardo, Onur Sevindik, Michele Di Foggia, Paola Tessarin, Anna Maria Bregoli, Maria F Caboni, Adamo D Rombolà
BACKGROUND: Seed oil and flours have been attracting the interest of researchers and industry, since they contain various bioactive components. We monitored the effects of ripening on lipids, monomeric flavan-3-ols, proanthocyanidins and tocols concentration in seed extracts from organically cultivated cv. Sangiovese vines. RESULTS: Linoleic acid was the most abundant fatty acid, followed by oleic, palmitic and stearic acids. The tocols detected were α-tocopherol, α-tocotrienol and γ-tocotrienol...
November 21, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27765984/characterisation-of-seed-oils-from-different-grape-cultivars-grown-in-china
#15
Xin Wen, Minghui Zhu, Rui Hu, Jinhong Zhao, Ziye Chen, Jingming Li, Yuanying Ni
To explore the potential of the large amount of grape pomace in wineries of China, oils of three Eurasian grape cultivars (Chardonnay, Merlot and Carbernet Sauvignon) and two Chinese traditional grape cultivars (Vitis amurensis and Vitis davidii), were characterised. The results showed seed oil properties differ for various grape varities. Grape seed oils were demonstrated to be good sources of polyunsaturated fatty acid (PUFA) (63.88-77.12 %), sterols (227.99-338.83 mg/100 g oil) and tocotrienols (320...
July 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27570274/in-vitro-physicochemical-phytochemical-and-functional-properties-of-fiber-rich-fractions-derived-from-by-products-of-six-fruits
#16
Sangeeta Saikia, Charu Lata Mahanta
A comparative study was done on the health promoting and functional properties of the fibers obtained as by-products from six fruits viz., pomace of carambola (Averrhoa carambola L.) and pineapple (Ananas comosus L. Merr), peels of watermelon (Citrullus lanatus), Burmese grape (Baccurea sapida Muell. Arg) and Khasi mandarin orange (Citrus reticulata Blanco), and blossom of seeded banana (Musa balbisiana, ABB). Highest yield of fiber was obtained from Burmese grape peel (BGPL, 79.94 ± 0.41 g/100 g) and seeded banana blossom (BB 77...
March 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27559299/grape-seed-oil-compounds-biological-and-chemical-actions-for-health
#17
REVIEW
Juliano Garavaglia, Melissa M Markoski, Aline Oliveira, Aline Marcadenti
Grape seed oil is rich in phenolic compounds, fatty acids, and vitamins, with economic importance to pharmaceutical, cosmetic, and food industry. Its use as an edible oil has also been suggested, especially due to its pleasant sensory characteristics. Grape seed oil has beneficial properties for health that are mainly detected by in vitro studies, such as anti-inflammatory, cardioprotective, antimicrobial, and anticancer properties, and may interact with cellular and molecular pathways. These effects have been related to grape seed oil constituents, mainly tocopherol, linolenic acid, resveratrol, quercetin, procyanidins, carotenoids, and phytosterols...
2016: Nutrition and Metabolic Insights
https://www.readbyqxmd.com/read/27451202/antioxidative-and-prooxidative-effects-in-food-lipids-and-synergism-with-%C3%AE-tocopherol-of-a%C3%A3-a%C3%A3-seed-extracts-and-grape-rachis-extracts
#18
Priscilla Siqueira Melo, Leandro de Oliveira Rodrigues Arrivetti, Severino Matias de Alencar, Leif H Skibsted
Extracts of açaí seed and of grape rachis alone or in combination with α-tocopherol were evaluated as antioxidants in (i) bulk soybean oil, (ii) soybean oil liposomes and (iii) soybean-oil/water emulsions. The extracts made with 57% aqueous ethanol showed an antioxidant activity not dependent on concentration for grape rachis extracts and a concentration-dependent prooxidative activity for açaí seed extracts in bulk soybean oil. Both the extracts, however, protected liposome suspensions and oil/water emulsions against lipid oxidation...
December 15, 2016: Food Chemistry
https://www.readbyqxmd.com/read/27130817/modulation-of-in-vitro-rumen-biohydrogenation-by-cistus-ladanifer-tannins-compared-with-other-tannin-sources
#19
COMPARATIVE STUDY
Mónica Costa, Susana P Alves, Ângelo Cabo, Olinda Guerreiro, George Stilwell, Maria T Dentinho, Rui Jb Bessa
BACKGROUND: Tannins are polyphenolic compounds able to modify the ruminal biohydrogenation (BH) of unsaturated fatty acids, but their activity may vary among different tannin sources. The effect of rockrose (Cistus ladanifer) on BH has never been compared with other more common tannin sources. Tannin extracts (100 g kg(-1) substrate dry matter) from chestnut (CH), quebracho (QB), grape seed (GS) and rockrose (CL) were incubated in vitro for 6 h with ruminal fluid using as substrate a feed containing 60 g kg(-1) of sunflower oil...
January 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27085796/hepatoprotective-effect-of-grape-seed-oil-against-carbon-tetrachloride-induced-oxidative-stress-in-liver-of-%C3%AE-irradiated-rat
#20
Amel F M Ismail, Asmaa A M Salem, Mamdouh M T Eassawy
Carbon tetrachloride (CCl4) and ionizing radiation are well known environmental pollutants that generate free radicals and induce oxidative stress. The liver is the primary and major target organ responsible for the metabolism of drugs, toxic chemicals and affected by irradiation. This study investigated the effect of grape seed oil (GSO) on acute liver injury induced by carbon tetrachloride (CCl4) in γ-irradiated rats (7Gy). CCl4-intoxicated rats exhibited an elevation of ALT, AST activities, IL-6 and TNF-α level in the serum...
July 2016: Journal of Photochemistry and Photobiology. B, Biology
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