What's the difference between ligneous and lignin?

Ligneous


Definition:

  • (a.) Made of wood; consisting of wood; of the nature of, or resembling, wood; woody.

Example Sentences:

  • (1) Ligneous conjunctivitis occurred unilaterally in a 74-year-old man after pterygium excision and only involved the bulbar conjunctiva.
  • (2) Three possibilities are considered: the proper inflammatory lesions--granulomatous, lymphoplasmocitary and ligneous thyroiditis, the cystic formations circumscribed by the glandular tissue with inflammatory signs as well as the association of thyroid cancer with chronic thyroiditis--seldom reported in literature--upon which 2 observations have been made.
  • (3) A considerable number of agents have been proposed as causing ligneous conjunctivitis.
  • (4) Seventeen cases of ligneous conjunctivitis were studied.
  • (5) The treatment of ligneous conjunctivitis with Imuran has not previously been reported in the literature.
  • (6) Using immunohistochemical techniques, we studied ligneous conjunctival lesions from two patients.
  • (7) On the basis of his studies on Fabry's disease, the dyscephalic syndrome of François, ligneous conjunctivitis and macular dystrophy of the cornea, the author stresses the importance of heredity in ophthalmology.
  • (8) The origin and treatment of ligneous cellulitis are discussed.
  • (9) A case of ligneous conjunctivitis, which presented in the acute form and converted to a mixed form after several months is described.
  • (10) We report the association of ligneous conjunctivitis with middle-ear and tympanic membrane involvement in two children.
  • (11) The diagnosis of ligneous conjunctivitis was made by excisional biopsies in both.
  • (12) Ligneous conjunctivitis is a rare disease of unknown cause characterized by pseudomembranous, fibrous, woody, plaquelike deposits on the conjunctiva.
  • (13) On the basis of this family and previous reports, we believe that ligneous conjunctivitis is a genetic disorder inherited in an autosomal recessive pattern and that genetic counseling should be offered to the parents of affected children.
  • (14) These findings support the hypothesis that ligneous conjunctivitis could be the result of a lowered resistance associated with a disturbance of wound healing.
  • (15) The diffused floor coverings on epoxide basis, paste "Pirolik" and some types of ligneous surfaces on the basis of carbamide-formaldehyde pitch, received unfavourable hygienic assessment.
  • (16) Ligneous conjunctivitis tends to occur more frequently in children.
  • (17) The cases of ligneous conjunctivitis published since 1964 are presented in a review of the literature.
  • (18) On the basis of his studies on Fabry's disease, the dyscephalic syndrome of François, the ligneous conjunctivitis and the macular dystrophy of the cornea the author stresses the importance of heredity in ophthalmology.
  • (19) Eye and ear specimens revealed histopathologic and ultrastructural findings consistent with ligneous conjunctivitis, characterized by an amorphous, eosinophilic material with acute and chronic nongranulomatous inflammation.
  • (20) The success of Intal therapy in this case supports the theory that mast cells are involved in the pathogenesis of ligneous conjunctivitis.

Lignin


Definition:

  • (n.) A substance characterizing wood cells and differing from cellulose in its conduct with certain chemical reagents.

Example Sentences:

  • (1) The manganese peroxidase (MnP), from the lignin-degrading fungus Phanerochaete chrysosporium, an H2O2-dependent heme enzyme, oxidizes a variety of organic compounds but only in the presence of Mn(II).
  • (2) 2-Chloro-1,4-dimethoxybenzene (IV) is oxidized by lignin peroxidase to generate 2,5-dimethoxy-1,4-benzoquinone (V), which is reduced to 2,5-dimethoxy-1,4-hydroquinone (VI).
  • (3) Increased numbers of fungi were detected only in the variant with AS-lignin at the end of the incubation.
  • (4) The molecular weight distribution of the dioxane-soluble lignin remained constant during degradation, but that of the water-soluble fraction changed to higher molecular weights.
  • (5) The experiments were performed with veratryl alcohol and a dimeric lignin model compound.
  • (6) The hydrolytic products of lignins, humic acids and industrial waste including hydroquinone, catechol, resorcinol, pyrogallol and 1,2,4-benzenetriol are widely distributed in water sources.
  • (7) Apparent digestibilities of DM, OM, CP, neutral detergent solubles and permanganate lignin were higher (P less than .01) and digestibilities of NDF and ADF, hemicellulose and cellulose were lower (P less than .01) for steers consuming alfalfa compared to orchardgrass silage.
  • (8) This study compared the dietary fiber (DF), neutral detergent fiber (NDF), cellulose, hemicellulose, lignin, and pectin content of selected fruits and vegetables.
  • (9) In the second pilot experiment, Phanerochaete chrysosporium and Chaetomium globosum, which are known for their ability to degrade lignin, were each incubated with wood dusts in a mixture of physiological saline and nutrient broth for either 3 or 30 days.
  • (10) Furthermore, oxidized lignin peroxidase is clearly a stronger oxidant than oxidized HRP or laccase.
  • (11) Goats selected diets 4% higher (P less than .1) in neutral detergent fiber on the control pastures than on the treated pastures; otherwise, diets selected by the goats on the various pastures were similar in terms of crude protein, lignin and in vitro organic matter digestibility.
  • (12) The concentration of oxalate in these cultures decreased during the period in which maximum lignin peroxidase activity (veratryl alcohol oxidation) was detected.
  • (13) In this study dosages of psyllium seed husk or lignin acceptable to patients with gallstones do not appear to alter the relative amounts of cholesterol, or individual bile acids in the bile.
  • (14) Natural lignocelluloses containing 14C primarily in their lignin components were prepared by feeding plants uniformly labeled L-[14C]phenylalanine through their cut stems.
  • (15) The ability of selected bacterial strains and consortia to mineralize degradation intermediates produced by Phanerochaete chrysosporium from 14C-labeled synthetic lignins was studied.
  • (16) Recombinant Phanerochaete chrysosporium lignin peroxidase isozyme H2 (pI 4.4) was produced in insect cells infected with a genetically engineered baculovirus containing a copy of the cDNA clone lambda ML-6.
  • (17) Lignin peroxidase also hydroxylated 1-(4'-ethoxy-3'-methoxyphenyl)propane II at the alpha-position to yield 1-(4'-ethoxy-3'-methoxyphenyl)-1-hydroxypropane VI under anaerobic conditions in the presence of mCPBA.
  • (18) Veratryl alcohol acts as a third substrate (with H2O2 and the azo dye) in the lignin peroxidase cycle during oxidations of azo dyes.
  • (19) The fungal fractions identified as cellulose and lignin varied widely with substrate.
  • (20) The oxidation of coniferyl alcohol (CA), a lignin precursor, by cell wall peroxidases may take place at the expense of indole-3-acetic acid (IAA) and O2, and in the absence of H2O2.

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