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https://www.readbyqxmd.com/read/28317752/facile-preparation-of-magnetic-carbon-nanotubes-immobilized-lipase-for-highly-efficient-synthesis-of-1-3-dioleoyl-2-palmitoylglycerol-rich-human-milk-fat-substitutes
#1
Mingming Zheng, Shi Wang, Xia Xiang, Jie Shi, Juan Huang, Qianchun Deng, Fenghong Huang, Junyong Xiao
In this study, Candida lipolytica lipase (CLL) was immobilized on magnetic multi-walled carbon nanotubes (mMWCNTs) via hydrophobic and cation-exchange interaction. The resultant immobilized CLL showed much better thermal stability, biocatalyst activity and easier recycling than the free form. A method for efficient enzymatic acidolysis of tripalmitin (PPP) with oleic acid (OA), to produce OPO-rich TAGs, was developed, using the immobilized CLL as the biocatalyst. Under optimized conditions (2% water, 20mg/ml enzyme, 1:6 PPP/OA, 50°C, 2h), the content of OPO in the final product reached 46...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28301719/a-reconfigured-kennedy-pathway-which-promotes-efficient-accumulation-of-medium-chain-fatty-acids-in-leaf-oils
#2
Kyle B Reynolds, Matthew C Taylor, Darren P Cullerne, Christopher L Blanchard, Craig C Wood, Surinder P Singh, James R Petrie
Medium chain fatty acids (MCFA, C6-14 fatty acids) are an ideal feedstock for biodiesel and broader oleochemicals. In recent decades, several studies have used transgenic engineering to produce MCFA in seeds oils, though these modifications result in unbalance membrane lipid profiles that impair oil yields and agronomic performance. Given the ability to engineer non-seed organs to produce oils, we have previously demonstrated that MCFA profiles can be produced in leaves, but this also results in unbalanced membrane lipid profiles and undesirable chlorosis and cell death...
March 16, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28294682/rapid-screening-technique-to-identify-sudan-dyes-i-to-iv-in-adulterated-tomato-sauce-chilli-powder-and-palm-oil-by-innovative-high-resolution-mass-spectrometry
#3
Simona Sciuto, Giovanna Esposito, Luana Dell'Atti, Chiara Guglielmetti, Pier Luigi Acutis, Francesca Martucci
Sudan dyes are synthetic azo dyes used by industry in a variety of applications. Classified as carcinogenic, they are not allowed in foodstuffs; however, their presence as adulterants in food products has been regularly reported. Here, we describe an innovative screening method to detect Sudan I, II, III, and IV in tomato sauce, palm oil, and chilli powder. The method entails minimal sample preparation, completely avoiding the liquid chromatography phase, followed by detection and identification through atmospheric pressure chemical ionization time-of-flight mass spectrometry, in positive ionization mode...
March 15, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28284089/quantifying-tropical-peatland-dissolved-organic-carbon-doc-using-uv-visible-spectroscopy
#4
Sarah Cook, Mike Peacock, Chris D Evans, Susan E Page, Mick J Whelan, Vincent Gauci, Lip Khoon Kho
UV-visible spectroscopy has been shown to be a useful technique for determining dissolved organic carbon (DOC) concentrations. However, at present we are unaware of any studies in the literature that have investigated the suitability of this approach for tropical DOC water samples from any tropical peatlands, although some work has been performed in other tropical environments. We used water samples from two oil palm estates in Sarawak, Malaysia to: i) investigate the suitability of both single and two-wavelength proxies for tropical DOC determination; ii) develop a calibration dataset and set of parameters to calculate DOC concentrations indirectly; iii) provide tropical researchers with guidance on the best spectrophotometric approaches to use in future analyses of DOC...
February 27, 2017: Water Research
https://www.readbyqxmd.com/read/28284063/soybean-polar-lipids-differently-impact-adipose-tissue-inflammation-and-the-endotoxin-transporters-lbp-and-scd14-in-flaxseed-vs-palm-oil-rich-diets
#5
Manon Lecomte, Leslie Couëdelo, Emmanuelle Meugnier, Emmanuelle Loizon, Pascale Plaisancié, Annie Durand, Alain Géloën, Florent Joffre, Carole Vaysse, Marie-Caroline Michalski, Fabienne Laugerette
Obesity and type 2 diabetes are nutritional pathologies, characterized by a subclinical inflammatory state. Endotoxins are now well recognized as an important factor implicated in the onset and maintain of this inflammatory state during fat digestion in high-fat diet. As a preventive strategy, lipid formulation could be optimized to limit these phenomena, notably regarding fatty acid profile and PL emulsifier content. Little is known about soybean polar lipid (SPL) consumption associated to oils rich in saturated FA vs...
February 21, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28280869/biotechnological-route-for-sustainable-succinate-production-utilizing-oil-palm-frond-and-kenaf-as-potential-carbon-sources
#6
REVIEW
Abdullah Amru Indera Luthfi, Shareena Fairuz Abdul Manaf, Rosli Md Illias, Shuhaida Harun, Abdul Wahab Mohammad, Jamaliah Md Jahim
Due to the world's dwindling energy supplies, greater thrust has been placed on the utilization of renewable resources for global succinate production. Exploration of such biotechnological route could be seen as an act of counterbalance to the continued fossil fuel dominance. Malaysia being a tropical country stands out among many other nations for its plenty of resources in the form of lignocellulosic biomass. To date, oil palm frond (OPF) contributes to the largest fraction of agricultural residues in Malaysia, while kenaf, a newly introduced fiber crop with relatively high growth rate, holds great potential for developing sustainable succinate production, apart from OPF...
March 9, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28274100/production-of-polyhydroxyalkanoates-from-sludge-palm-oil-using-pseudomonas-putida-s12
#7
Du-Kyeong Kang, Cho-Ryong Lee, Sun Hee Lee, Jung-Hoon Bae, Young-Kwon Park, Young Ha Rhee, Bong Hyun Sung, Jung-Hoon Sohn
Polyhydroxyalkanoates (PHAs) are biodegradable plastics produced by bacteria, but their use in diverse applications is prohibited by high production costs. To reduce these costs, the conversion of PHAs from crude sludge palm oil (SPO) as an inexpensive renewable raw material by Pseudomonas strains was tested. Pseudomonasputida S12 was found to produce the highest yield (~41%) of elastomeric medium-chain-length (MCL)-PHAs from SPO. The MCL-PHA characteristics were analyzed by gas-chromatography/mass spectrometry, gel permeation chromatography, and differential scanning calorimetry...
March 9, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28265365/assessment-of-mold-contamination-and-physicochemical-properties-of-crude-palm-oil-sold-in-jos-nigeria
#8
Chuks K Odoh, Tarfen Y Amapu, Ikechukwu P Orjiakor, Paul E Martins, Benedict T Seibai, Uche K Akpi, Chinyere S Ugwu, Nathaniel I Lerum, Amechi S Nwankwegu
Due to increasing reports on poor-quality palm oil in the market, there has been a continual decrease in demand and revenue cum product rejection of palm oil sold in Jos, Nigeria. Hence, the significance of this work aims to moderate the microbial and physical qualities of crude palm oil sold in different major markets in order to increase revenue through quality control and quality assurance protocols. The intent is to create awareness among government monitoring agencies, buyers (exporters and importers), and to promote standard processing procedures among manufacturers...
March 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/28264315/description-of-four-new-species-of-ochlerini-from-south-america-hemiptera-pentatomidae-discocephalinae
#9
Luiz Alexandre Campos, Talita Roell
The tribe Ochlerini Rolston was proposed in 1981 to house 23 genera of Neotropical pentatomids, most of them containing few species and poorly represented in entomological collections. After a quarter century of accumulated taxonomic knowledge the tribe totals 36 genera and 133 species, but a number of taxa still require revision or remain undescribed. Here we describe and illustrate four new species from South America, Cromata flavida sp. nov., Lincus curvatus sp. nov., Ocellatocoris longirostris sp. nov., and Xynocoris ecuadorensis sp...
February 23, 2017: Zootaxa
https://www.readbyqxmd.com/read/28262420/electro-persulphate-oxidation-for-polishing-of-biologically-treated-palm-oil-mill-effluent-pome
#10
Mohammed J K Bashir, Chong Jia Wei, Ng Choon Aun, Salem S Abu Amr
Malaysia alone produces more than 49 million m(3) palm oil mill effluent per year. Biological treated palm oil mill effluent via ponding system often fails to fulfill the regulatory discharge standards. This is due to remaining of non-biodegradable organics in the treated effluent. Thus, the aim of this study was to resolve such issue by using electro persulphate oxidation process, for the first time, as a post treatment of palm oil mill effluent. Central composite design in response surface methodology was used to analyze and optimize the interaction of operational variables (i...
May 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28260667/microbial-biodiesel-production-from-oil-palm-biomass-hydrolysate-using-marine-rhodococcus-sp-yhy01
#11
Shashi Kant Bhatia, Junyoung Kim, Hun-Seok Song, Hyun Joong Kim, Jong-Min Jeon, Ganesan Sathiyanarayanan, Jeong-Jun Yoon, Kyungmoon Park, Yun-Gon Kim, Yung-Hun Yang
The effect of various biomass derived inhibitors (i.e. furfural, hydroxymethylfurfural (HMF), vanillin, 4-hydroxy benzaldehyde (4-HB) and acetate) was investigated for fatty acid accumulation in Rhodococcus sp. YHY 01. Rhodococcus sp. YHY01 was able to utilize acetate, vanillin, and 4-HB for biomass production and fatty acid accumulation. The IC50 value for furfural (3.1mM), HMF (3.2mM), vanillin (2.0mM), 4-HB (2.7mM) and acetate (3.7mM) was calculated. HMF and vanillin affect fatty acid composition and increase saturated fatty acid content...
February 20, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28250313/nutritional-evaluation-of-oleogel-made-from-micronutrient-rich-edible-oils
#12
Moumita Ghosh, Faruk Begg, Dipak K Bhattacharyya, Nilratan Bandyopadhya, Mahua Ghosh
The present study examined the nutritional properties of trans-free edible oleogels made from oil blends of rice bran and flaxseed in animal model. Oleogels were prepared by using mixture of palm stearin (PS) with cetyl laurate (CL) and palm stearin (PS) with cetyl caprylate (CC) as oleogelators. The oleogel samples were prepared with 15 weight % oleogelators (2:1 molar ratio of PS:CC or PS:CL) at 60°C with 1 hr constant stirring in blended oil. The prepared oleogel samples were subjected to DSC and XRD studies in order to evaluate their melting and crystal characteristics...
2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28242932/dietary-fat-composition-food-matrix-and-relative-polarity-modulate-the-micellarization-and-intestinal-uptake-of-carotenoids-from-vegetables-and-fruits
#13
Purna Chandra Mashurabad, Ravindranadh Palika, Yvette Wilda Jyrwa, K Bhaskarachary, Raghu Pullakhandam
Dietary fat increases carotenoid bioavailability by facilitating their transfer to the aqueous micellar fraction during digestion. However, the specific effect of both quantity and type of dietary fat required for optimal carotenoid absorption remained unexplored. In the present study, the effect of amount and type of vegetable oils on carotenoid micellarization from carrot, spinach, drumstick leaves and papaya using in vitro digestion/Caco-2 cell model have been assessed. Although, dietary fat (0.5-10% w/w) significantly increased the micellarization of carotenoids from all the test foods, the extent of increase was determined by the food matrix (papaya > drumstick = spinach > carrot) and polarity of carotenoids (lutein > β-carotene = α-carotene > lycopene)...
February 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28242223/evaluation-on-the-decomposability-of-tropical-forest-peat-soils-after-conversion-to-an-oil-palm-plantation
#14
Faustina E Sangok, Nagamitsu Maie, Lulie Melling, Akira Watanabe
To understand the variations in the decomposability of tropical peat soil following deforestation for an oil palm plantation, a field incubation experiment was conducted in Sarawak, Malaysia. Peat soils collected from three types of primary forest, namely Mixed Peat Swamp (MPS; Gonystylus-Dactylocladus-Neoscrotechinia association), Alan Batu (ABt; Shorea albida-Gonstylus-Strenonurus association), and Alan Bunga (ABg; Shorea albida association), were packed in polyvinyl chloride pipes and installed in an oil palm plantation...
February 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28226259/synthesis-optimization-of-oil-palm-empty-fruit-bunch-and-rice-husk-biochars-for-removal-of-imazapic-and-imazapyr-herbicides
#15
Saba Yavari, Amirhossein Malakahmad, Nasiman B Sapari, Sara Yavari
Imidazolinones are a family of herbicides that are used to control a broad range of weeds. Their high persistence and leaching potential make them probable risk to the ecosystems. In this study, biochar, the biomass-derived solid material, was produced from oil palm empty fruit bunches (EFB) and rice husk (RH) through pyrolysis process. Feedstock and pyrolysis variables can control biochar sorption capacity. Therefore, the present study attempts to evaluate effects of three pyrolysis variables (temperature, heating rate and retention time) on abilities of biochars for removal of imazapic and imazapyr herbicides from soil...
May 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28224888/spherical-nanocrystalline-cellulose-ncc-from-oil-palm-empty-fruit-bunch-pulp-via-ultrasound-assisted-hydrolysis
#16
Z A Zianor Azrina, M Dalour H Beg, M Y Rosli, Ridzuan Ramli, Norhafzan Junadi, A K M Moshiul Alam
Nanocrystalline cellulose (NCC) was isolated from oil palm empty fruit bunch pulp (EFBP) using ultrasound assisted acid hydrolysis. The obtained NCC was analysed using FESEM, XRD, FTIR, and TGA, and compared with raw empty fruit bunch fibre (REFB), empty fruit bunch pulp (EFBP), and treated empty fruit bunch pulp (TEFBP). Based on FESEM analysis, it was found that NCC has a spherical shaped after acid hydrolysis with the assistance of ultrasound. This situation was different compared to previous studies that obtained rod-like shaped of NCC...
April 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28220633/fatty-acid-composition-fat-deposition-lipogenic-gene-expression-and-performance-of-broiler-fed-diet-supplemented-with-different-sources-of-oil
#17
Jannatara Khatun, Teck Chwen Loh, Henny Akit, Hooi Ling Foo, Rosfarizan Mohamad
The present study assessed the effect of feeding palm oil (PO), sunflower oil (SO) and their combination on performance, fat deposition, fatty acid composition and lipogenic gene expression of broilers reared for 42 days. A total of 144 1-day-old broilers (Cobb500) were randomly allotted into four treatment diets with each having six replicates of six chicks in each replicate following a completely randomized design. Live weight gain and feed efficiency was significantly (P < 0.05) higher in birds fed with a combination of oil sources compared to controls...
February 21, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28215803/polycyclic-aromatic-hydrocarbons-pahs-produced-in-the-combustion-of-fatty-acid-alkyl-esters-from-different-feedstocks-quantification-statistical-analysis-and-mechanisms-of-formation
#18
Alberto Llamas, Ana-María Al-Lal, María-Jesús García-Martínez, Marcelo F Ortega, Juan F Llamas, Magín Lapuerta, Laureano Canoira
Polycyclic Aromatic Hydrocarbons (PAHs) are pollutants of concern due to their carcinogenic and mutagenic activity. Their emissions are mainly related with the combustion or pyrolysis of the organic matter, such as in fossil fuels combustion. It is important to characterize PAHs in the combustions of biofuels due to their increasing importance in the actual energetic setting. There is a lot of research focused in PAHs emission due to the combustion in diesel engines; but only few of them have analyzed the effect of raw material and type of alcohol used in the transesterification process...
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28215212/dietary-fat-and-physiological-determinants-of-plasma-chylomicron-remnant-homoeostasis-in-normolipidaemic-subjects-insight-into-atherogenic-risk
#19
Deasy Irawati, John C L Mamo, Karin M Slivkoff-Clark, Mario J Soares, Anthony P James
TAG depleted remnants of postprandial chylomicrons are a risk factor for atherosclerosis. Recent studies have demonstrated that in the fasted state, the majority of chylomicrons are small enough for transcytosis to arterial subendothelial space and accelerate atherogenesis. However, the size distribution of chylomicrons in the absorptive state is unclear. This study explored in normolipidaemic subjects the postprandial distribution of the chylomicron marker, apoB-48, in a TAG-rich lipoprotein plasma fraction (Svedberg flotation rate (Sf>400), in partially hydrolysed remnants (Sf 20-400) and in a TAG-deplete fraction (Sf<20), following ingestion of isoenergetic meals with either palm oil (PO), rice bran or coconut oil...
February 20, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28202317/application-of-time-of-flight-mass-spectrometry-for-screening-of-crude-glycerins-for-toxic-phorbol-ester-contaminants
#20
Kithsiri Herath, Lauren Girard, Renate Reimschuessel, Hiranthi Jayasuriya
Since 2007, the U.S. Food and Drug Administration (FDA) has received numerous complaints of pet illnesses that may be related to the consumption of jerky pet treats. Many of those treats include glycerin as an ingredient. Glycerin can be made directly from oils such as palm seed oil, but can also be derived from the seed oil of toxic Jatropha plant during biodiesel production. If crude glycerin from biodiesel production from Jatropha curcas is used in the manufacture of animal feed, toxic tigliane diterpene phorbol esters (PEs), namely Jatropha factors (JFs), may be present and could lead to animal illnesses...
January 10, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
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