Earthy odor

Earth surface geochemical system, 26 9 Earthy odor, 3 228t Easiest next heuristic, for simple distillation, 22 300 Easily dispersible (ED) pigments, 14 316-317... 

Additional layers may be added to the height desired. Keep the pile moist but not soggy. It may heat up to almost 15(F F in only a few days and begin to shrink in size. Turn it with a pitchfork after two or three weeks and again after five or six weeks. Be sure to place the outer parts of the pile toward the center when it is turned. The heat generated will kill many weed seed, insects and disease organisms. Compost made this way should be ready to use in three to six months. A pile of plant materials not chopped, amended or turned may require a year or two to compost properly. Compost is ready to use when the plant residues are fragmented, dark brown and have an earthy odor. 

CH3(CH2)4CH(0H)CH2CH3, CgHigO, M, 130.23, bp9i.6 A> 176-176.5 °C 0.8264, Up 1.4252, may occur in its optically active form. It is a colorless liquid that has a mushroomy-earthy odor and occurs in mushrooms. 3-Octanol can be obtained by hydrogenation of 3-octanone it is used in lavender compositions and for imparting mushroom-like odors. 

Uq 1.4378, may occur in the optically active form. It is found, for example, in lavender oil and is a steam-volatile component of mushrooms. l-Octen-3-ol is a liquid with an intense mushroom, forest-earthy odor that can be prepared by a Grignard reaction from vinylmagnesium bromide and hexanal. It is used in lavender compositions and in mushroom aromas. 

C11H16O2, Mr 180.25, Wq 1.4938, is a liquid with a mushroom-like, earthy odor. It is used for green nuances in flower compositions. 

R = CH3, C10H12O4, Mr 196.20, is an odor determining constituent of oakmoss absolute extract and forms colorless crystals mp 145 °C) with a mossy-earthy odor. It is used as a substitute for oakmoss extract in fine fragrances, soap, and cosmetics. 

Jelen, H.H., Majcher, M., Zawirska-Wojtasiak, R., Wiewiorowska,M., Wasowicz, E. (2003) Determination of geosmin, 2-methylisoborneol, and a musty-earthy odor in wheat grain by SPME-GC-MS, profiling volatiles, and sensory analysis. J. Agric. Food Chem. 51 7079-7085. 

I glanced back at Gill, but there was already nothing left of him except a faint earthy odor. 

Properties Pale yellow liquid camphor, earthy odor. D 0.946-0.967, refr index 1.470-1.491. Sol in ale, propylene glycol, fixed oils insol in water. 

Actinomycetes, primarily streptomycetes, are capable of producing highly odorous volatile metabolites in low yields in submerged culture. This subject has been reviewed in detail(37). Among the more important volatiles identified ares geosmin, the earthy odor, methyl isoborneol, having a camphor or menthol odor 2-methoxy-3-isopropyl pyrazine, with a musty vegetable odor and miscellaneous compounds such as sesquiterpenoids and lactones. 

Worldwide, a major issue for the drinking water industry is the esthetic quahty of water, in particular the taste and smell of the water at the consumer s tap. Apart from chlorine added to most water supplies to ensure microbiological safety, the most common cause of taste and odor problems are algal metabolites in the source water, and the two most common of these are MIB (MIB can also be produced by actinomycetes bacteria) and geosmin, an earthy odor compound. 

Darriet, P, Pons, M., Lamy, S., and Dubourdieu, D. (2000). Identification and quantification of geosmin, an earthy odorant contaminating wines, J. Agric. Food Chem., 48,4835-4838. 

Identified by Spadone et al. (1990) during an analytical investigation of Rio off-flavor in green coffee, by sequential cuts and injections of a GC a region where musty and earthy odors had been detected. 

The product was described as having a roasty and earthy odor (Wagner et al., 1999) its flavor was described as chocolate and sweet at 6 ppm in water (Polak Frutal Works and Douwe Egberts, 1968), ethereal, burnt, cocoa (Chemisis, 1986). The odor threshold is 1 ppb in water (quoted in Fors, 1983) and a mean odor threshold of 200 xg/m3 air has been measured by Grosch et al. (1996) (135-270 p-g/m3 air, Wagner et al., 1999). 

Lichens and mosses are extracted to isolate their aromatic components that are widely used in the fragrance industry. Oakmoss, the lichen Evemia pnmastri (L.) grows on oak trees. Its extract has a penetrating sweet, smoky, earthy odor due to a complex mixture of many compounds, including the characterizing methyl 2,4-dihydroxy-3,6-dimethyl benzoate (evemyl), and 3-methoxy-2,5-dimethyl phenol (orcinol). 

Vetivone - a fraction containing mainly sesquiterpenic ketones and presenting a very tenacious earthy odor. 

C12H22O. Mr 182.31, oil with an earthy odor, bp. 270 °C, [a]o -16.5°, decomposes on acid treatment to odorless components. G. is produced by various Strep-tomyces species and myxobacteria and has also been detected in beet juice and beetroots. G. is responsible for the characteristic (earthy-musty) odor (olfactory threshold 0.1 ppb) of freshly plowed soil and can be experienced sensorily at even higher dilutions in soil or water. G. is probably formed biogenetically from a sesquiterpene after prior cleavage of an isopropyl groupFor synthesis, see Lit.. ... 

Reguiatory FDA approved for food-contact applies. DOT nonhazardous Properties Wh. to grayish-wh. fine powd. 4.5 median particle size 99.9% thru 325 mesh si. earthy odor sol. in hot, cone, phosphoric acid Insol. in water, cold acids and alkalis sp.gr. 2.7-2.8 dens. 38 Ib/ft (tapped), 14 Ib/ft (loose) oil absorp. 35 brightness 90 pH si. alkaline hardness (Mohs) 1.0-1.5 0.4% max. moisture Toxicology ACGIH TWA/TLV 2 mg/m (respirable dust) inh. of Ig. amts, of dust may cause mucous membrane respiratory tract irritation chronic exposure may cause pulmonary fibrosis, shortness of breath, chronic cough, heart failure, pneumoconiosis tumorigen TSCA listed Precaution Very slippery when wet... 

Regulatory DOT nonregulated SARA 313 nonreportable Properties Wh. to grayish-wh. fine powd. 97% thru 325 mesh 99% thru 200 mesh 5-8 p median particle size sl. earthy odor sol. in conc. hot... 

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