The Relation of Leaf Moisture Content and Certain Chemical Changes During Curing of Burley Tobacco

1972 ◽  
Vol 15 (2) ◽  
pp. 0342-0345
Author(s):  
W. H. Henson ◽  
Jr. ◽  
L. R. Walton and J. M. Bunn
Keyword(s):  
Moisture Content ◽  
Chemical Changes ◽  
Burley Tobacco

Structural Changes on Charring Woods of Dichrostachys and Salix from Southern Africa: The Effect of Moisture Content

IAWA Journal ◽  
1986 ◽  
Vol 7 (3) ◽  
pp. 243-250 ◽  
Author(s):  
Juliet Prior ◽  
K. L. Alvin
Keyword(s):  
Moisture Content ◽  
Southern Africa ◽  
Structural Changes ◽  
Initial Increase ◽  
Dichrostachys Cinerea ◽  
Chemical Changes ◽  
Structural Alterations ◽  
Wood Pyrolysis ◽  
Effect Of Moisture ◽  
Physical And Chemical

Air-dried and saturated cubes of fully developed wood of Dichrostachys cinerea (Leguminosae) and Salix subserrata (Salicaceae) were charred for 60 minutes at 400°C. An initial increase in moisture content caused few structural alterations in Salix but in Dichrostachys it resulted in considerable ray distension and massive deformation of non-gelatinous fibres. An attempt is made to correlate these observations with the physical and chemical changes known to occur during wood pyrolysis.

Storage Related Physico-Chemical Changes in Aspirin and Phenylbutazone Tablets Compressed With Different Initial Moisture Content

1989 ◽  
Vol 15 (14-16) ◽  
pp. 2707-2719 ◽  
Author(s):  
M. A. Al-meshal ◽  
A. A. Al-angary ◽  
A. A. Hammad ◽  
G. M. Mahrous ◽  
A. M. Molokhia
Keyword(s):  
Moisture Content ◽  
Initial Moisture Content ◽  
Chemical Changes ◽  
Physico Chemical

Physical and chemical changes in fruit of seven avocado cultivars at Mildura

1978 ◽  
Vol 29 (1) ◽  
pp. 81 ◽  
Author(s):  
BM El-Zeftawi
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Moisture Content ◽  
Seed Weight ◽  
Oil Content ◽  
Ash Content ◽  
Chemical Changes ◽  
Local Conditions ◽  
Post Harvest ◽  
Physical And Chemical

The pre- and post-harvest changes of seven different avocado cultivars were determined and evaluated as indicators of maturity. All cultivars had similar trends in their growth. These trends continued during development, accompanied by reductions in moisture and free fatty acid contents, increases in oil content, and variable changes in ash content. Decreases in moisture content during maturity were negatively correlated with oil content. A relationship was found between oil content and seed weight. It is suggested that the moisture content and/or seed weight could be used by the growers to estimate oil content and therefore the best time for picking. Oil content (Y) could be calculated from one of the following equations: Y = 0.19x – 1.57 where x is the seed weight (g); or Y = 90.87 – 0.77x, where x is the percentage of moisture in the mesocarp. Taking into account the differences between the cultivars and the limited nature of the results, and on the basis of a minimum oil content of 8% as the crude fat extract, it is suggested that under local conditions, Zutano could best be picked in May, Fuerte in July, and Hazzard in September, with other cultivars to be picked between July and September. In this way a continuous supply of avocado from May to September, and even later, could be provided.

The microbiology of four steamed soils

1952 ◽  
Vol 42 (4) ◽  
pp. 353-361 ◽  
Author(s):  
C. D. Oxley ◽  
E. A. Gray
Keyword(s):  
Biological Activity ◽  
Moisture Content ◽  
Soil Texture ◽  
Tap Water ◽  
Chemical Changes ◽  
Growth Requirements ◽  
Major Chemical ◽  
Simple Growth ◽  
Production Of Ammonia

Four soils, sterilized by steam at 100° C, with unsteamed controls for three soils, were examined at intervals up to 62 days to study the microbiology in relation to the abundance of ammonia, nitrites and nitrates of all the soils, the C/N ratios of two, and the pH and moisture content of three. After steaming, the soils were flooded with sterilized tap water equivalent in amount to 3 in. of rainfall at intervals varying with the particular soil. The soil of the first trial remained under water until very near the end of the experiment. In all the soils, the production of ammonia up to 14 days after steaming was associated with increased biological activity, generally a multiplication of bacteria associated with multiplication of Protozoa. The production of nitrites and nitrates was associated with a similar biological activity. Those bacteria that survived steaming had simple growth requirements as compared with those of the subsequent microflora. The Protozoa showed a series of ‘pulses’ of maximum and minimum abundance and there was also a succession of species in all the soils. A predilection of Protozoa for certain bacteria was shown by the association of certain species with particular groups of bacteria identified by Gram's staining. In two of the soils, there were ‘pulses’ of maximum and minimum abundance of diatoms, and in one soil diatoms possibly affected soil texture. The investigation showed that despite the contrasting characters of the soils, the major chemical changes were almost wholly attributable to biological activity, and that after steaming the same general reactions occurred in all. The investigation proved the importance of considering the microbiology of steamed soils as a problem in ecology.

BIOLOGICAL, PHYSICAL AND CHEMICAL CHANGES IN STORED FABABEANS

1979 ◽  
Vol 59 (4) ◽  
pp. 991-999 ◽  
Author(s):  
H. A. H. WALLACE ◽  
G. E. LALIBERTE ◽  
B. M. FRASER ◽  
P. L. SHOLBERG ◽  
W. E. MUIR ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Moisture Content ◽  
Bacterial Infection ◽  
Chemical Changes ◽  
Aspergillus Glaucus ◽  
Physical And Chemical Variables ◽  
Seed Rot ◽  
June July ◽  
Physical And Chemical

Two lots of frost-damaged fababeans of low germinability, high bacterial infection, and above-normal free fatty acid (FAV) were stored as a single bulk for 12 mo in 1974–75. A brief period of biological heating occurred during June-July 1975 in the upper lot which had a moisture content of 15–17.8% as compared to 13.2–16.2% in the lower lot. In both lots bacterial infection decreased, and was accompanied by increased levels of intergranular CO2, FAV, Aspergillus glaucus and later by A. flavus. In the heated upper lot, A. candidus, A. nidulans and Cephalosporium also occurred. A third lot of bin-stored, non-frosted fababeans of high germinability, low bacterial infection, average FAV and 13.8–14.2% moisture content served as a control during 1975–77 and showed few changes in physical and chemical variables; its Penicillium contamination, however, increased. At the bottom of the bin leakage of rain water resulted in seed rot associated with incidence of Scopulariopsis, Gliocladium, Streptomyces and in drier areas Penicillium and the A. glaucus group. Rotten fababeans were heavily infested by mites, mostly Acarus immobilis.

Preparation and Standardization of a Stable AHF Plasma

1968 ◽  
Vol 19 (03/04) ◽  
pp. 423-429 ◽  
Author(s):  
G. M Thelin ◽  
Keyword(s):  
Moisture Content ◽  
Primary Standard ◽  
Healthy Male ◽  
Healthy Donors ◽  
Fresh Plasma

SummaryA stable, lyophilized AHF reference plasma has been prepared from pooled plasma from at least 50 normal healthy donors and standardized against a primary standard of fresh plasma from 20 healthy male donors aged 20 to 40. Average AHF potency of a typical lot is 98.8%, and moisture content is less than 0.5%. Under storage at -25° C, this AHF reference plasma is stable for at least 18 months. It has been used in several major coagulation laboratories, and has given consistently satisfactory and reproducible results in AHF assays.

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