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Elías López-Alba, Sebastian Schmeer, Francisco Díaz
The study of natural fiber reinforcement composite structures has focused the attention of the automobile industry due to the new regulation in relation to the recyclability and the reusability of the materials preserving and/or improving the mechanical characteristics. The influence of different parameters on the material behavior of natural fiber reinforced plastic structures has been investigated, showing the potential for transport application in energy absorbing structures. Two different woven fabrics (twill and hopsack) made of flax fibers as well as a non-woven mat made of a mixture of hemp and kenaf fibers were employed as reinforcing materials...
March 13, 2018: Materials
Gurudatt Pavagada Sudarshan, Manoj Kulkarni, Leonid Akhov, Paula Ashe, Hamid Shaterian, Sylvie Cloutier, Gordon Rowland, Yangdou Wei, Gopalan Selvaraj
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
March 12, 2018: Scientific Reports
Yang Xu, Roman Holic, Darren Li, Xue Pan, Elzbieta Mietkiewska, Guanqun Chen, Jocelyn Ozga, Randall Weselake
Seed oil from flax ( Linum usitatissimum ) is enriched in α -linolenic acid (ALA; 18:3 Δ 9 cis ,12 cis ,15 cis ) but the biochemical processes underlying the enrichment of flax seed oil with this polyunsaturated fatty acid are not fully elucidated. Here, a potential process involving the catalytic actions of long-chain acyl-CoA synthetase (LACS) and diacylglycerol acyltransferase (DGAT) is proposed for ALA enrichment in triacylglycerol (TAG). LACS catalyzes the ATP-dependent activation of free fatty acid to form acyl-CoA, which in turn may serve as an acyl-donor in the DGAT-catalyzed reaction leading to TAG...
March 9, 2018: Biochemical Journal
Sébastien Acket, Anthony Degournay, Mathilde Gosset, Franck Merlier, Manual Adrian Troncoso-Ponce, Brigitte Thomasset
In context of fluxomic studies, 13 C labeling analysis of amino acids are very important for solving the carbon flow calculation, because they are synthesized in various biosynthesis pathways and cellular compartments in plant cells. Traditionally, 13 C labeling analysis are performed using low resolution mass spectrometry detector by GC-MS. We developed a method using capillary electrophoresis-high resolution mass spectrometry without derivatization and with better accuracy assessment of labeling measurements comparing to classical GC-MS...
February 13, 2018: Analytical Biochemistry
A K M Mahmudul Haque, Sedong Kim, Junhyo Kim, Jungpil Noh, Sunchul Huh, Byeongkeun Choi, Hanshik Chung, Hyomin Jeong
This study presents the forced convective heat transfer of a nanofluid consisting of distilled water and different weight concentrations (1 wt% and 2 wt%) of Al2O3 nanoparticles flowing in a vertical shell and tube heat exchanger under counter flow and laminar flow regime with certain constant heat flaxes (at 20 °C, 30 °C, 40 °C and 50 °C). The Al2O3 nanoparticles of about 50 nm diameter are used in the present study. Stability of aqueous Al2O3 nanofluids, TEM, thermal conductivity, temperature differences, heat transfer rate, T-Q diagrams, LMTD and convective heat transfer coefficient are investigated experimentally...
March 1, 2018: Journal of Nanoscience and Nanotechnology
Agnieszka Bilska, Katarzyna Waszkowiak, Martyna Błaszyk, Magdalena Rudzińska, Ryszard Kowalski
BACKGROUND: Nowadays, an increase interested of food technologists in an improvement of meat products' nutritional value, especially their lipid profile, and shelf-life is remarked. The aim of the study was to determine the effect of animal fat replacement with flaxseed oil (20%) and flaxseed extract addition (0.05%-0.25%) on the changes in composition and stability of liver pâté lipid fraction. RESULTS: Replacement of animal fat with flaxseed oil was observed to lower the saturated and monoenoic fatty acid contribution in the product fatty acid profile by around 12% as well as to raise the polyene fatty acid contribution by more than 70% when compared to the control...
February 1, 2018: Journal of the Science of Food and Agriculture
Yanyan Wang, Tianbao Zhang, Xiaxia Song, Jianping Zhang, Zhanhai Dang, Xinwu Pei, Yan Long
Alternative splicing is a popular phenomenon in different types of plants. It can produce alternative spliced transcripts that encode proteins with altered functions. Previous studies have shown that one transcription factor, ABSCISIC ACID INSENSITIVE3 (ABI3), which encodes an important component in abscisic acid (ABA) signaling, is subjected to alternative splicing in both mono- and dicotyledons. In the current study, we identified two homologs of ABI3 in the genome of linseed flax. We screened two alternatively spliced flax LuABI3 transcripts, LuABI3-2 and LuABI3-3, and one normal flax LuABI3 transcript, LuABI3-1...
2018: PloS One
Anna Banaś, Anna Korus, Małgorzata Tabaszewska
Low-sugar gooseberry jams enriched by the addition of black chokeberry, elderberry, Japanese quince, flax seeds and wheat germs were examined for the content of total polyphenols, total flavonoids, and total anthocyanins as well as their antioxidant activity (DPPH, ABTS, and FRAP) and individual phenolic compounds. The jams were evaluated immediately after production and after 6 and 12 months of storage. Samples were stored at chilled temperature (10 °C) and room temperature (20 °C). A significant increase in the level of the analyzed components and antioxidant activity were determined in jams with the addition of chokeberry, elderberry and Japanese quince, while in the case of other plant ingredients the differences were not always significant...
January 2018: Journal of Food Science and Technology
Beata Doczekalska, Krzysztof Kuśmierek, Andrzej Świątkowski, Monika Bartkowiak
Adsorption of 2,4-dichlorophenoxyacetic acid (2,4-D) and 4-chloro-2-metylphenoxyacetic acid (MCPA) from aqueous solution onto activated carbons derived from various lignocellulosic materials including willow, miscanthus, flax, and hemp shives was investigated. The adsorption kinetic data were analyzed using two kinetic models: the pseudo-first order and pseudo-second order equations. The adsorption kinetics of both herbicides was better represented by the pseudo-second order model. The adsorption isotherms of 2,4-D and MCPA on the activated carbons were analyzed using the Freundlich and Langmuir isotherm models...
January 16, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
H Leung, A Arrazola, S Torrey, E Kiarie
A total of 72, 65-week-old broiler breeder hens (Ross 308, BW 4,190 ± 45 g) was placed in individual cages to investigate utilization of fiber in soy hulls (SH), oat hulls (OH), and flax meal (FM). Birds were adapted to cages for 10 d prior to allocation (n = 18) to broiler breeder ration (control) or control mixed with either of the 3 fiber sources (wt/wt) added to supply equal amounts of neutral detergent fiber (NDF) ∼21% and TiO2. The daily feed allocation was based on 4% BW. Feed intake (FI) was monitored daily, and grab excreta samples were taken on d 16 and 17...
January 6, 2018: Poultry Science
Shahira M Ezzat, Samia A Shouman, Abeer Elkhoely, Yasmin M Attia, Mohamed S Elsesy, Amira S El Senousy, Mouchira A Choucry, Sabah H El Gayed, Abeer A El Sayed, Essam Abdel Sattar, Nebal El Tanbouly
The objective of our study is to highlight the therapeutic effect and mechanism of action by which purified Flaxseed hydrolysate (PFH) which is a lignan rich fraction exerts its anticancer activity on a human breast cancer cell line (T47D) and in mice bearing tumor. HPLC analysis of PFH of six flaxseed cultivars had shown that PFH of the cultivar Giza 9 (PFH-G9) contains the highest concentration of SDG (81.64 mg/g). The in vitro cytotoxic potentiality of PFH's of six flaxseed cultivars was screened against a panel of human cancer cell lines...
January 11, 2018: Scientific Reports
Christophe Baley, Camille Goudenhooft, Marianne Gibaud, Alain Bourmaud
The present paper proposes to carefully study and describe the reinforcement mechanisms within a flax stem, which is an exceptional natural model of composite structure. Thanks to accurate microscopic investigations, with both optical and SEM method, we finely depicted the flax stem architecture, which can be view as a composite structure with an outer protection, a unidirectional ply on the periphery and a porous core; each component has a specific function, such as mechanical reinforcement for the unidirectional ply and the porous core...
January 10, 2018: Bioinspiration & Biomimetics
Alexey A Dmitriev, George S Krasnov, Tatiana A Rozhmina, Roman O Novakovskiy, Anastasiya V Snezhkina, Maria S Fedorova, Olga Yu Yurkevich, Olga V Muravenko, Nadezhda L Bolsheva, Anna V Kudryavtseva, Nataliya V Melnikova
BACKGROUND: Flax (Linum usitatissimum L.) is a crop plant used for fiber and oil production. Although potentially high-yielding flax varieties have been developed, environmental stresses markedly decrease flax production. Among biotic stresses, Fusarium oxysporum f. sp. lini is recognized as one of the most devastating flax pathogens. It causes wilt disease that is one of the major limiting factors for flax production worldwide. Breeding and cultivation of flax varieties resistant to F...
December 28, 2017: BMC Plant Biology
Nadezhda L Bolsheva, Nataliya V Melnikova, Ilya V Kirov, Anna S Speranskaya, Anastasia A Krinitsina, Alexey A Dmitriev, Maxim S Belenikin, George S Krasnov, Valentina A Lakunina, Anastasiya V Snezhkina, Tatiana A Rozhmina, Tatiana E Samatadze, Olga Yu Yurkevich, Svyatoslav A Zoshchuk, Аlexandra V Amosova, Anna V Kudryavtseva, Olga V Muravenko
BACKGROUND: The species relationships within the genus Linum have already been studied several times by means of different molecular and phylogenetic approaches. Nevertheless, a number of ambiguities in phylogeny of Linum still remain unresolved. In particular, the species relationships within the sections Stellerolinum and Dasylinum need further clarification. Also, the question of independence of the species of the section Adenolinum still remains unanswered. Moreover, the relationships of L...
December 28, 2017: BMC Evolutionary Biology
Elizabeth Smith, Sarah K Beamer, Kristen E Matak, Jacek Jaczynski
BACKGROUND: Egg sticks fortified with omega-3-polyunsaturated-fatty-acids (ω-3 PUFAs) were developed by replacing egg yolk with salmon, algae, and flax oils. Egg sticks were cooked before analysis. Quality indicators for storage stability under different packaging and temperature were determined throughout a 28-day storage. Egg sticks were vacuum and non-vacuum packed. Further, both packaging treatments were divided into two storage temperatures of 4 and 10°C. Quality indicators were determined every seven days, including pH, syneresis, texture, color, microbial growth, proximate composition, fatty acid profile, and lipid oxidation...
December 28, 2017: Journal of the Science of Food and Agriculture
Marta Preisner, Wioleta Wojtasik, Kamil Kostyn, Aleksandra Boba, Tadeusz Czuj, Jan Szopa, Anna Kulma
Cinnamyl alcohol dehydrogenase (CAD), which catalyzes the reduction of cinnamaldehydes to their alcohol derivatives, is represented by a large family of proteins. The aim of the study was to identify the CAD isoforms in flax (Linum usitatissimum L.) - LuCADs - and to determine their specificity to enhance knowledge of the mechanisms controlling cell wall lignification in flax under environmental stresses. On the basis of genome-wide analysis, we identified 15 isoforms (one in two copies) belonging to three major classes of the CAD protein family...
December 13, 2017: Journal of Plant Physiology
H L Han, V S Kononenko
Two replacement names of the genus group in Micronoctuini (Lepidoptera, Erebidae, Hypenodinae), Tentaxus nom. nov. pro Tentax Fibiger 2011 (unavailable name) and Flaxus nom. nov. pro Flax Fibiger 2011 (unavailable name) are proposed; 43 new conbinations (comb. nov.) are stated. A new species T. zhangweiweii Han & Kononenko, sp. nov. is described from Borneo (Sabah, East Malaysia).
December 5, 2017: Zootaxa
Floriana Gavazzi, Gaia Pigna, Luca Braglia, Silvia Gianì, Diego Breviario, Laura Morello
BACKGROUND: Microtubules, polymerized from alpha and beta-tubulin monomers, play a fundamental role in plant morphogenesis, determining the cell division plane, the direction of cell expansion and the deposition of cell wall material. During polarized pollen tube elongation, microtubules serve as tracks for vesicular transport and deposition of proteins/lipids at the tip membrane. Such functions are controlled by cortical microtubule arrays. Aim of this study was to first characterize the flax β-tubulin family by sequence and phylogenetic analysis and to investigate differential expression of β-tubulin genes possibly related to fibre elongation and to flower development...
December 8, 2017: BMC Plant Biology
Prasanta K Dash, Rhitu Rai, Ajay K Mahato, Kishor Gaikwad, Nagendra K Singh
No abstract text is available yet for this article.
2017: Frontiers in Chemistry
Gurudatt Pavagada Sudarshan, Manoj Kulkarni, Leonid Akhov, Paula Ashe, Hamid Shaterian, Sylvie Cloutier, Gordon Rowland, Yangdou Wei, Gopalan Selvaraj
The flowers of flax (linseed) are blue-hued, ephemeral and self-pollinating, and the seeds are typically brown. A century-old interest in natural yellow seed variants and a historical model point to recessive alleles in B1, D and G loci being responsible, but the functional aspects had remained unknown. Here, we characterized the "D" locus by quantitative trait loci (QTL) mapping and identified a FLAVONOID 3'5' HYDROXYLASE (F3'5'H) gene therein. It does not belong to the F3'5'H clade, but resembles biochemically characterized F3'Hs (flavonoid 3' hydroxylase) but without F3'H activity...
November 16, 2017: Scientific Reports
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