Dry-weight basis

Beet extract is also used as a colorant. Extract is sold as either a concentrate prepared by evaporating beet juice under vacuum to a total soHds content of 40—60%, or as a powder made by spray-dryiag the concentrate. Both products usually contain ascorbic or citric acid as a stabilizer, and a preservative such as sodium propionate. On a dry-weight basis, beet extract typically contains between 0.4 and 1.0% betanin, 80% sugar, 8% ash, and 10% cmde proteia. 

Powdered Cellulose. Solka-Floc, a purified fibrous powdered ceUulose, is said to be 99% ceUulose on a dry weight basis, virtuaUy lignin free, free of fat and proteia, and with low ash content. Food grades are available ia fiber lengths averagiag 20—25 to 100—140 p.m. 

Dry-weight basis expresses the moisture content of wet sohd as kilograms of water per kilogram of bone-dry solid. 

Moisture content, or water content, is an important influence on soil behavior. Water content w, dry-weight basis percent, is... 

Table 1 shows the dry weight of substrate, and amounts of HCl aqueous solution for pretreatment, cellulase and suspension broth for the lactic acid fermentation with ESS. The initially supplied amount of bean curd refuse in dry weight basis was changed from 10 to 150 g to examine the influence of substrate loading. The amount of cellulase was increased against initial substrate loading. And also, the amoimt of 0.1 mol/1 HCl was increased against... 

Tea leaf contains 2.5-4.0% caffeine (1,3,7-trimethylxanthine) on a dry weight basis and smaller quantities of the related methylxanthines, theobromine (3,7-dimethylxanthine 0.2-0.4%) and theophylline (1,3-dimethylxanthine ca. 0.02%). Although it is said that var. sinensis is slightly lower in caffeine than var. assamica, black, green and oolong tea beverages all contain about the same levels of caffeine (Cheng and Chen, 1994). 

Algae can be cultivated easily and quickly when compared to plants. They produce very high quantities of carotenoids compared to other sources (3.0 to 5.0% w/w on a dry weight basis). They contain both cis and trans isomers of carotenoids for high bioavailability and bioefflcacy, and also contain oxygenated carotenoids (xantho-phylls), which have greater bioactivity and better anticancer properties. The proteins from Dunaliella biomass can be utilized for bread and other products and whole cells can be utilized for animal, poultry, and fish foods because they are safe. ... 

Weigh the samples [strawberry, rice grain, 25 g wheat grain, barley grain, 10 g rice straw, 5 g soil (dry weight basis), 30 g] in round-bottom flasks of appropriate volumes (500- or 300-mL). For soil samples add 40mL of IN sulfuric acid and 120mL of acetone to the flask, and for other samples add 20 mL of 1 N sulfuric acid and 60 mL... 

Test chemicals and their use pattern information, physico-chemical properties of sediment samples, water sample quality, study field information, and climatic conditions of the study area are essential as basic information. Data concerning dissipation patterns or distributions of the chemical should be reported as those in the surface water layer, in the sediment layer, and the sum of the two. The concentration should be expressed as micrograms per kilogram for a sediment (SS also if needed) on a dry weight basis, and micrograms per liter for water. 

Weigh 40 g (dry weight basis) of the soil sample into a 500-mL round-bottom flask and add 200 mL of acetone-water (3 1, v/v) mixture. Attach a condenser to the flask and perform reflux extraction at 80 °C for 1 h. Filter the extract through a Alter paper on a Buchner funnel with suction into a 500-mL round-bottom flask. Rinse the residue on the funnel with 130mL of acetone, and Alter in the same manner. Combine and concentrate the extract under reduced pressure to 50 mL. Transfer the concentrate into a 200-mL separatory funnel with 10 mL of saturated aqueous sodium chloride... 

Lead at a lightly contaminated brownfield site has a concentration in soil of 600 mg/kg to a depth of 1 ft. The cleanup standard has been set at 400 mg/kg. Indian mustard, Bmssica juncea, will be planted, fertilized, and harvested three times each year for phytoextraction. Using small doses of EDTA, it is possible to achieve concentrations in the plant of 5000 mg/kg (dry weight basis), and harvestable densities of 2.721 (3 short tons) dry matter per crop. Estimate the time required for cleanup ... 

The results of the catalyst testing are shown in Table 3. The data listed in the table show, that on a per proton basis, catalyst A (based on 7% DVB) has higher activity as compared to resin materials, crosslinked with 12% DVB. This result is in accord with the finding by Petrus et al.,3 that at temperatures higher than 120 °C the hydration is under into particle diffusion limitation and as such, a more flexible polymeric matrix will provide better access to the acidic sites. On a dry weight basis, catalyst D showed the highest activity, which correlates well with the high acid site density found for this resin (Table 2). On a catalyst volume basis, catalyst A has the best performance characteristics followed by catalyst D. 

KoC is an important parameter which describes the potential for movement or mobility of pesticides in soil, sediment and groundwater. Because of the structural complexity of these agrochemical molecules, the above simple relationship which considers only the chemical s hydrophobicity may fail for polar and ionic compounds. The effects of pH, soil properties, mineral surfaces and other factors influencing sorption become important. Other quantities, KD (sorption partition coefficient to the whole soil on a dry weight basis) and KqM (organic matter-water partition coefficient) are also commonly used to describe the extent of sorption. K0M is often estimated as 0.56 KoC, implying that organic matter is 56% carbon. 

Resmi et al. [59] used laterite stones for the immobilization of Pseudomonas putida (MTCC 1194). The amount of bacterial biomass attached to the support was 8.64 g/100 g of stones on dry weight basis. Packed bed reactor was used for treating mixture of seven azo dyes. With the help of immobilized bacterial strain, dye mixture was degraded to nontoxic smaller molecules. It was reported that even after 2 months, bacteria-coated pebbles were stable and suitable for the aerobic degradation of azo dyes. With the help of TLC and HPLC, 61.7% degradation was reported at the concentration of 50 pg/mL of dye. 

Satake and coworkers131 studied lead accumulation and location in the shoots of the aquatic liverwort, Scapania undulata, in stream water (Pb content, 20 p-gl-1) at a mine in England. The lead concentration in the shoots ranged from 7 to 24 mgPbg-1 on a dry weight basis, giving an enrichment ratio of 3.5 x 105 — 1.2 x 106. Lead was localized in the cell wall131. 

It is emphasized that Cr+3, probably because of its very low solubility in seawater, appears to have a much lower bioavailability to most groups of marine animals than Ct 6, which is more water soluble (Carr et al. 1982). The clam Rangia cuneata appears to be an exception it accumulated up to 19 mg Cr/kg in soft parts, on a dry weight basis, during exposure for 16 days to chromium-contaminated muds, and retained most of it for an extended period the estimated biological half-time was 11 days (Carr et al. 1982). In general, benthic invertebrates rarely accumulate chromium from contaminated sediments (82 to 188 mg Cr+Vkg) only a few examples have been recorded (Neff etal. 1978). 

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