6 Wood Discoloration

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9 Positive Effects of <strong>Wood</strong>-Inhabiting Microorganisms Particularly after the OPEC oil embargo of the 1970s, research turned towards the utilization of renewable resources like wood, yearly plants, and lignocellulosic waste from forestry and agriculture instead of oil as raw material for chemical and biological processes (“biotechnology of lignocelluloses”) (Eriksson et al. 1990; Dart and Betts 1991). Among the substantial causes that make the biological conversion of lignocelluloses difficult (Table 4.2), the most serious obstacle is the incrustation of the degradable carbohydrates cellulose and hemicelluloses by the lignin barrier, which is not surmountable by most microorganisms. Table 9.1 groups some bioconversions that have been done in the past or are recently investigated or already performed into those microbial processes, which go well directly with lignocelluloses, and into those, which need a pretreatment of the substrate. Only the wood-degrading white, brown, and soft-rot fungi, and the wood-degrading bacteria can degrade the native woody cell wall without any pretreatment of the substrate. Whereas brown and soft-rot fungi and assum- Table 9.1. Biotechnological procedures with lignocelluloses without and after substrate pretreatment conversion without substrate pretreatment – “myco-wood” – production of edible mushrooms – biological pulping pretreatment of the substrate and subsequent microbial conversion biological pretreatment – “palo podrido” and “myco-fodder” chemical pretreatment – hydrolysis of wood with acids and use of glucose for yeast production, ethanol fermentation and microbial transformations to amino acids, antibiotics, enzymes, vitamins – sulphite pulping process and use of hardwood pentoses in the spent liquor for yeast production and of softwood hexoses for ethanol fermentation – pulping and subsequent use of enzymes for deinking of waste paper physical pretreatment – grinding of lignocelluloses to improve accessibility to enzymes – steam explosion methods to open the wood structure for bioconversions www.taq.ir
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Olaf Schmidt Wood and Tree Fungi Bi
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Professor Dr. Olaf Schmidt Universi
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Preface This book is the updated re
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X Contents 5 Damages by Viruses and
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1 Introduction Wood is damaged by v
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2 Biology 2.1 Cytology and Morpholo
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2.1 Cytology and Morphology 5 10 nm
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2.1 Cytology and Morphology 7 The h
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2.1 Cytology and Morphology 9 Due t
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2.2 Growth and Spreading 11 velopme
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2.2 Growth and Spreading 13 Fig.2.6
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2.2 Growth and Spreading 21 shapedp
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2.2 Growth and Spreading 23 surface
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2.2 Growth and Spreading 25 and Ish
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2.3 Sexuality 27 the basidiospores
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2.3 Sexuality 29 Table 2.6. Pairing
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2.4 Identification 31 In addition t
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2.4 Identification 33 2.4.2 Molecul
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2.4 Identification 35 antibodies. A
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2.4 Identification 37 RAPD analysis
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2.4 Identification 39 in view of a
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2.4 Identification 41 Sequences of
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2.4 Identification 43 basidiomycete
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2.4 Identification 45 cleotide unit
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2.5 Classification 47 Fatty acid pr
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2.5 Classification 49 with about 12
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2.5 Classification 51 Table 2.12. C
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3 Physiology The wood-inhabiting fu
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3.1 Nutrients 55 conditions in the
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3.1 Nutrients 57 Al, S, and Zn were
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3.2 Air 59 Table 3.4. Energy produc
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3.3 Wood Moisture Content 61 surviv
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3.3 Wood Moisture Content 63 Table
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3.3 Wood Moisture Content 65 of bro
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3.4 Temperature 67 puteana, Gloeoph
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3.4 Temperature 69 mycelial growth.
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3.5 pH Value and Acid Production by
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3.5 pH Value and Acid Production by
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3.6 Light and Force of Gravity 75 s
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3.7 Restrictions of Physiological D
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3.8 Competition and Interactions Be
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88 4 Wood Cell Wall Degradation rel
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90 4 Wood Cell Wall Degradation cel
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92 4 Wood Cell Wall Degradation Fig
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94 4 Wood Cell Wall Degradation Saa
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96 4 Wood Cell Wall Degradation Ear
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98 4 Wood Cell Wall Degradation pro
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100 4 Wood Cell Wall Degradation th
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102 4 Wood Cell Wall Degradation mo
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104 4 Wood Cell Wall Degradation ve
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106 4 Wood Cell Wall Degradation be
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5 5.1 Viruses Damages by Viruses an
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5.2 Bacteria 111 Gram staining divi
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5.2 Bacteria 113 doch and Campana 1
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5.2 Bacteria 115 Fig.5.3. Bacterial
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5.2 Bacteria 117 Woods from Tertiar
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6 Wood Discoloration The damage of
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6.1 Molding 121 6.1 Molding Theterm
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6.1 Molding 123 Molded wood is, how
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6.2 Blue Stain 125 There are variou
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6.2 Blue Stain 127 40 ◦ C. The mo
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6.3 Red Streaking 129 6.3 Red Strea
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6.4 Protection 131 often A. areolat
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6.4 Protection 133 Fougerousse 1985
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136 7 Wood Rot enzymatic action and
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138 7 Wood Rot Brown-rot fungi colo
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140 7 Wood Rot In the successive (s
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142 7 Wood Rot Table 7.2. Some comm
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144 7 Wood Rot enlargement of exist
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146 7 Wood Rot rine salts, which in
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148 7 Wood Rot Table 7.5. Hazard cl
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150 7 Wood Rot Fig.7.5. Kolle flask
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152 7 Wood Rot allowed for indoor a
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154 7 Wood Rot Table 7.10. Major gr
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156 7 Wood Rot 1935 from staining a
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158 7 Wood Rot type end coating of
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8 Habitat of Wood Fungi Microbial d
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8.1 Fungal Damage to Living Trees 1
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8.2 Tree Wounds and Tree Care 173 d
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8.2 Tree Wounds and Tree Care 175 w
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8.2 Tree Wounds and Tree Care 177 t
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8.2 Tree Wounds and Tree Care 179 8
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8.2 Tree Wounds and Tree Care 181 T
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8.3 Tree Rots by Macrofungi 183 The
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8.3 Tree Rots by Macrofungi 185 Tab
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8.3 Tree Rots by Macrofungi 187 and
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8.3 Tree Rots by Macrofungi 189 and
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8.3 Tree Rots by Macrofungi 191 sin
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8.3 Tree Rots by Macrofungi 193 you
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8.3 Tree Rots by Macrofungi 195 Cry
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8.3 Tree Rots by Macrofungi 197 A p
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8.3 Tree Rots by Macrofungi 199 dea
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8.4 Damage to Stored Wood and Struc
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8.5 Damage to Structural Timber Ind
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8.5 Damage to Structural Timber Ind
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Page 512: Appendix 1 Identification Key for S
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Page 528: 262 Appendix 2 Candida utilis (Henn
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264 Appendix 2 Memnoniella echinata
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266 Appendix 2 Stereum rugosum (Per
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268 References Allen MF (1991) The
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270 References Bastawde KB (1992) X
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272 References Blanchette RA, Cease
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274 References Bucur V (2003) Nonde
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276 References Cooper JI, Edwards M
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278 References Dickinson DJ, Sorkho
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280 References Ellis EA (1976) Brit
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282 References Frankland JC, Hedger
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284 References Grinda M, Kerner-Gan
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286 References Haustrup ACS, Green
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288 References Holdenrieder O (1982
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290 References Jellison J, Chen Y,
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292 References Katayama S, Watanabe
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294 References Klein-Gebbinck HW, B
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296 References Laks PE, Park CG, Ri
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298 References Liese W, Kumar S (20
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300 References Martin F, Delaruelle
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302 References Moreth U, Schmidt O
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304 References Nilsson T, Obst JR,
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306 References Payne C, Petty JA, W
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308 References Rapp AO, Müller J (
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310 References Rösch R (1972) Phen
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312 References Schmidt H (2005) Au
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314 References Schmidt O, Schmitt U
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316 References Schwarze FWMR (2005)
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318 References Siepmann R (1970) Ar
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320 References Sutter H-P (2003) Ho
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322 References Uemura S, Ishihara M
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324 References Watanabe T, Sabrina
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326 References Wohlers A, Kowol T,
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Subject Index Abiotic wood discolor
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Subject Index 331 Fruit body format
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Subject Index 333 Phylogenetic anal
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