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Benjamin Pickel et al.
The FEBS journal, 279(11), 1980-1993 (2012-03-27)
Dirigent proteins impart stereoselectivity on the phenoxy radical-coupling reaction, yielding optically active lignans from two molecules of coniferyl alcohol. By an unknown mechanism, they direct the coupling of two phenoxy radicals toward the formation of optically active (+)- or (-)-pinoresinol....
Lucia Panzella et al.
Journal of agricultural and food chemistry, 60(36), 8895-8901 (2012-03-20)
An improved purification procedure leading to black sesame ( Sesamum Indicum L.) pigment was developed involving fat removal by treatment of ground black sesame seeds with dichloromethane followed by an optimized hydrolytic protocol with 6 M HCl, at 100 °C...
Raffaele Guzzon et al.
Journal of food science and technology, 54(3), 810-821 (2017-03-17)
Careful control of spoilage microflora inside wine containers is a key issue during winemaking. To date, attention has been paid to the development of an effective protocol for the eradication of spoilage agents, especially
Songkui Cui et al.
The New phytologist, 218(2), 710-723 (2018-03-03)
Parasitic plants in the family Orobanchaceae are destructive weeds of agriculture worldwide. The haustorium, an essential parasitic organ used by these plants to penetrate host tissues, is induced by host-derived phenolic compounds called haustorium-inducing factors (HIFs). The origin of HIFs...
Alif Meem Nurani et al.
Plant & cell physiology, 61(2), 255-264 (2020-01-11)
Stem cells undergo cell division and differentiation to ensure organized tissue development. Because plant cells are immobile, plant stem cells ought to decide their cell fate prior to differentiation, to locate specialized cells in the correct position. In this study...
Richard Sibout et al.
Current biology : CB, 22(13), R533-R535 (2012-07-14)
Lignins are complex aromatic heteropolymers that reinforce the cell walls of terrestrial plants. A new study identifies an ATP-binding cassette ABC transporter that pumps a monolignol lignin precursor across the plasma membrane.
Brijesh Pandey et al.
Protein expression and purification, 79(2), 197-203 (2011-06-29)
A cDNA encoding cinnamyl alcohol dehydrogenase (CAD), catalyzing conversion of cinnamyl aldehydes to corresponding cinnamyl alcohols, was cloned from secondary xylem of Leucaena leucocephala. The cloned cDNA was expressed in Escherichia coli BL21 (DE3) pLysS cells. Temperature and Zn(2+) ion...
Peter Bock et al.
Journal of Raman spectroscopy : JRS, 50(6), 778-792 (2019-07-03)
Anatomical and chemical information can be linked by Raman imaging. Behind every pixel of the image is a Raman spectrum, which contains all the information as a molecular fingerprint. Yet to understand the spectra, the bands have to be assigned...
Chirantha P Rodrigo et al.
Journal of the American Chemical Society, 133(8), 2632-2641 (2011-02-08)
Single-conformation spectroscopy of the three lignin monomers (hereafter "monolignols") p-coumaryl alcohol (pCoumA), coniferyl alcohol (ConA), and sinapyl alcohol (SinA) has been carried out on the isolated molecules cooled in a supersonic expansion. Laser-induced fluorescence excitation, dispersed fluorescence, resonant two-photon ionization...
Yongkun Lv et al.
Bioresource technology, 267, 578-583 (2018-07-29)
Coniferyl alcohol is a valuable chemical. However, the current approaches to obtain coniferyl alcohol are either unefficient or expensive. Penicillium simplicissimum vanillyl alcohol oxidase (PsVAO) can be used to produce coniferyl alcohol. However, PsVAO intrinsically produces harmful byproduct H2O2. Utilizing...
Heath D Watts et al.
Physical chemistry chemical physics : PCCP, 13(47), 20974-20985 (2011-10-20)
Five potential reaction mechanisms, each leading to the formation of an α-O-4-linked coniferyl alcohol dimer, and one scheme leading to the formation of a recently proposed free-radical coniferyl alcohol trimer were assessed using density functional theory (DFT) calculations. These potential...
Romina Martínez-Rubio et al.
Physiologia plantarum, 164(1), 45-55 (2018-02-22)
Maize (Zea mays L.) suspension-cultured cells habituated to a cellulose biosynthesis inhibitor 2,6-dichlorobenzonitrile (DCB) have a modified cell wall, in which the reduction in the cellulose content is compensated by a network of highly cross-linked feruloylated arabinoxylans and the deposition...
Jiazeng Yang et al.
Metabolic engineering, 59, 44-52 (2020-02-01)
Silymarin extracted from milk thistle seeds, is used for treating hepatic diseases. Silybin and isosilybin are its main components, and synthesized from coupling of taxifolin and coniferyl alcohol. Here, the biosynthetic pathways of taxifolin and coniferyl alcohol were reconstructed in...
Rocío Santiago et al.
Physiologia plantarum, 145(2), 245-259 (2012-01-18)
This study describes a method for determining cinnamyl alcohol dehydrogenase activity in sugarcane stems using reverse phase (RP) high-performance liquid chromatography to elucidate their possible lignin origin. Activity is assayed using the reverse mode, the oxidation of hydroxycinnamyl alcohols into...
Avrajit Chakraborty et al.
Molecular genetics and genomics : MGG, 290(4), 1523-1542 (2015-03-01)
We generated the bast transcriptomes of a deficient lignified phloem fibre mutant and its wild-type jute (Corchorus capsularis) using Illumina paired-end sequencing. A total of 34,163 wild-type and 29,463 mutant unigenes, with average lengths of 1442 and 1136 bp, respectively...
Substrate Specificity of LACCASE8 Facilitates Polymerization of Caffeyl Alcohol for C-Lignin Biosynthesis in the Seed Coat of Cleome hassleriana.
Wang, et al.
Plant Cell, 32, 3825-3845 (2021)
Chang-Young Hong et al.
ACS chemical biology, 12(7), 1749-1759 (2017-05-04)
Whole cells of the basidiomycete fungus Phanerochaete chrysosporium (ATCC 20696) were applied to induce the biomodification of lignin in an in vivo system. Our results indicated that P. chrysosporium has a catabolic system that induces characteristic biomodifications of synthetic lignin...
Kewei Zhang et al.
The Plant cell, 24(7), 3135-3152 (2012-08-02)
Although the practice of protein engineering is industrially fruitful in creating biocatalysts and therapeutic proteins, applications of analogous techniques in the field of plant metabolic engineering are still in their infancy. Lignins are aromatic natural polymers derived from the oxidative...
Lucie Petrásková et al.
Foods (Basel, Switzerland), 9(2) (2020-01-25)
Herbal preparations from Silybummarianum have been used since the fourth century BC in liver disease treatment and against numerous other pathologies. Consumption of silymarin containing drugs and food supplements continues to increase. Precise, fast, reliable, and complex determination of all...
Hsi-Chuan Chen et al.
Proceedings of the National Academy of Sciences of the United States of America, 108(52), 21253-21258 (2011-12-14)
The hydroxylation of 4- and 3-ring carbons of cinnamic acid derivatives during monolignol biosynthesis are key steps that determine the structure and properties of lignin. Individual enzymes have been thought to catalyze these reactions. In stem differentiating xylem (SDX) of...
Shumei Li et al.
International journal of molecular sciences, 19(8) (2018-08-04)
To investigate the effect of pollination on the fruit quality of 'Dangshan Su' pear, 'Dangshan Su' was fertilized by the pollen of 'Wonhwang' (Pyrus pyrifolia Nakai.) (DW) and 'Jingbaili' (Pyrus ussuriensis Maxim.) (DJ). The analysis of primary metabolites was achieved...
Batirtze Prats-Mateu et al.
Scientific reports, 8(1), 11804-11804 (2018-08-09)
Raman microscopy is a powerful imaging technique for biological materials providing information about chemistry in context with microstructure. A 532 nm laser is often used as excitation source, because high spatial resolution and signal intensity can be achieved. The latter can...
Motohiro Nishimura et al.
Bioscience, biotechnology, and biochemistry, 75(9), 1770-1777 (2011-09-08)
We purified two isozymes of coniferyl alcohol dehydrogenase (CADH I and II) to homogeneity from cell-free extracts of Streptomyces sp. NL15-2K. The apparent molecular masses of CADH I and II were determined to be 143 kDa and 151 kDa respectively...
Fengxia Yue et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(51), 16402-16410 (2012-10-31)
Pinoresinol structures, featuring a β-β'-linkage between lignin monomer units, are important in softwood lignins and in dicots and monocots, particularly those that are downregulated in syringyl-specific genes. Although readily detected by NMR spectroscopy, pinoresinol structures largely escaped detection by β-ether-cleaving...
Ryoko Baba et al.
Journal of agricultural and food chemistry, 62(33), 8308-8313 (2014-08-05)
The volatile fractions of three famous Chinese green tea cultivar infusions (Longjing, Maofeng, and Biluochun) were prepared by a combination of the adsorptive column method and the SAFE techniques. The aroma extract dilution analysis (AEDA) applied to the volatile fractions...
Sun-Joo Moon et al.
Phytochemistry, 82, 15-21 (2012-08-14)
In this study, dehydrogenative polymers (DHP) were synthesized in vitro through dehydrogenative polymerization using different ratios of coniferyl alcohol (CA) and sinapyl alcohol (SA) (10:0, 8:2, 6:4, 2:8, 0:10), in order to investigate the monolignol coupling mechanism in the presence...
M P Kolomytseva et al.
International journal of biological macromolecules, 137, 1199-1210 (2019-07-12)
Three laccase isoforms with different physicochemical properties could be purified from culture liquid of basidiomycete Lentinus strigosus 1566 obtained during submerged cultivation. The purified laccases possessed individual selectivity in relation to different phenolic compounds. Laccases I, II, and III (59...
Yuree Lee et al.
Cell, 173(6), 1468-1480 (2018-05-08)
The cell wall, a defining feature of plants, provides a rigid structure critical for bonding cells together. To overcome this physical constraint, plants must process cell wall linkages during growth and development. However, little is known about the mechanism guiding...
Anne E Harman-Ware et al.
Biotechnology for biofuels, 10, 281-281 (2017-12-08)
Lignin dehydrogenation polymers (DHPs) are polymers generated from phenolic precursors for the purpose of studying lignin structure and polymerization processes. Here, DHPs were synthesized using a Zutropfverfahren method with horseradish peroxidase and three lignin monomers, sinapyl (S), coumaryl (H), and...
Jeong Ah Kim et al.
Molecules (Basel, Switzerland), 16(8), 6577-6581 (2011-08-06)
A new phenolic glucoside, isoconiferoside (1), was isolated from the seeds of Panax ginseng (Araliaceae). The structure was determined to be 9-O-[β-D-glucopyranosyl-(1 --> 6)-β-D-glucopyranosyl]-trans-coniferyl alcohol based on spectroscopic analyses (1H- and 13C-NMR, DEPT, COSY, HMQC, and HMBC) and acid hydrolysis.
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