The dynamics of acid-soluble phosphorus compounds in the course of winter and spring wheat germination under various thermic conditions. Part II. Labile phosphorus after hydrolysis of the acid-soluble fraction

The changes in labile phosphorus compounds content during germination of wheat were investigated. These compounds were determined in acid-soluble germ extracts separated into fractions according to the solubility of their barium salts. Low germination temperature was found to raise the labile phosphorus content in the fraction of insoluble barium salts. If we assume that labile P of this fraction consisted mainly of adenosinedi- and triphosphates, it would seem that the rise, in the ATP and ADP level under the influence of low temperature may be essential for initiating flowering in winter varieties.

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The dynamics of acid-soluble phosphorus compounds in the course of winter and spring wheat germination under various thermic conditions. Part I. Fractionation of wheat germs extracts

Acta Agrobotanica ◽

10.5586/aa.1971.017 ◽

2015 ◽

Vol 24 (2) ◽

pp. 281-296

Author(s):

A. Barbaro

Keyword(s):

Winter Wheat ◽

Spring Wheat ◽

Phosphorus Compounds ◽

Precipitation Method ◽

Soluble Phosphorus ◽

Wheat Germination

Results of investigations are reported on the role of acid-soluble phosphorus compounds in the process of winter wheat vernalization. Fractionation of germ extracts by the precipitation method revealed the dynamics of phosphorylated glycolysis metabolites during germination. The variability curves for spring wheat germinated at 1.5° and 22° and for winter wheat at 1.5° had a similar course, only that for winter wheat germinated at 22° showed differences. It is concluded that glycolysis is essential in the process of vernalization.

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PECULIARITIES OF PHOSPHOROUS NUTRITION OF WINTER WHEAT UNDER THE INFLUENCE OF MINERAL FERTILIZERS AND BACTERIZATION

Agriciltural microbiology ◽

10.35868/1997-3004.15.40-48 ◽

2012 ◽

Vol 15 ◽

pp. 40-48

Author(s):

K.I. Volkogon

Keyword(s):

Winter Wheat ◽

Field Experiments ◽

Rhizosphere Soil ◽

Phosphorus Compounds ◽

Mineral Fertilizers ◽

Chernozem Soils ◽

Labile Phosphorus ◽

Microbial Preparation ◽

Carry Over ◽

Hydrolysis Of

The paper describes peculiarities of formation of microorganisms associations, capable of hydrolysis of hardly soluble phosphorus compounds as well as content dynamics of labile phosphorus in rhizosphere soil, winter wheat productivity and phosphorus carry-over with yield in field experiments without bacterization and at presowing seeds inoculation with microbial preparation Polymyxobacterin on meadow chernozem soils on different agricultural backgrounds. Microbial preparation was shown to be an active optimization element of phosphorus nutrition of winter wheat plants especially on mineral backgrounds.

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Laboratory, Greenhouse, and Field Studies With Mixed Fertilizers Varying in Water-Soluble Phosphorus Content and Particle Size

Soil Science Society of America Journal ◽

10.2136/sssaj1955.03615995001900030017x ◽

1955 ◽

Vol 19 (3) ◽

pp. 315-319 ◽

Cited By ~ 7

Author(s):

L. Owens ◽

K. Lawton ◽

L. S. Robertson ◽

C. Apostolakis

Keyword(s):

Particle Size ◽

Phosphorus Content ◽

Field Studies ◽

Water Soluble ◽

Soluble Phosphorus

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Solid, slightly soluble phosphorus compounds as nutrient source in activated sludge treatment of forest industry wastewaters

Water Science & Technology ◽

10.2166/wst.1997.0500 ◽

1997 ◽

Vol 35 (2-3) ◽

pp. 131-138 ◽

Cited By ~ 1

Author(s):

Pirjo-Riitta Rantala ◽

Hannu Wirola

Keyword(s):

Activated Sludge ◽

The Other ◽

Phosphorus Compounds ◽

Forest Industry ◽

Phosphorus Concentration ◽

Nutrient Source ◽

Sludge Treatment ◽

Grain Sizes ◽

Soluble Phosphorus ◽

The Mean

The aim of the study was to determine if solid, slightly soluble compounds can be used as nutrient source in activated sludge treatment plants instead of liquid phosphoric acid. Four different solid materials were tested in lab-scale solubility tests to find compounds which are least soluble. Two materials were chosen for further studies: apatite and raw phosphate. The use of apatite and raw phosphate as nutrient source was studied in lab-scale activated sludge reactors along with a control reactor where phosphorus was added in liquid form. The phosphorus dosage, measured as elementary phosphorus, was the same for all three reactors. The reactors were fed with pre-clarified chemi-thermomechanical pulp mill (CTMP) wastewater. There were no significant differences in the reductions of organic matter between the three reactors. The mean effluent concentration of total phosphorus was 3 mg P/l in the control reactor and less than 1 mg P/1 in the other two reactors. The soluble phosphorus concentration was more than 2 mg P/l in the control reactor and less than 0.5 mg P/l in the other two. Apatite was an even better nutrient source than raw phosphate. Further lab-scale tests were conducted using two different grain sizes of apatite. No significant differences were found between the studied grain sizes (<0.074 mm and 0.074 mm-0.125 mm). Apatite was then used in full-scale at a CTMP-mill two different times. The experiments showed that the mean concentrations of phosphorus can be reduced radically by using apatite as a nutrient source instead of liquid phosphorus. Solid phosphorus compounds are a viable alternative to reduce the phosphorus load from forest industry wastewater treatment plants.

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A FRACTIONATION PROCEDURE FOR THE ACID-SOLUBLE PHOSPHORUS COMPOUNDS OF LIVER

Journal of Biological Chemistry ◽

10.1016/s0021-9258(18)56586-8 ◽

1949 ◽

Vol 181 (2) ◽

pp. 655-666 ◽

Cited By ~ 6

Author(s):

Jacob. Sacks

Keyword(s):

Phosphorus Compounds ◽

Fractionation Procedure ◽

Soluble Phosphorus

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Encapsulated NOLA™ Fit 5500 Lactase—An Economically Beneficial Way to Obtain Lactose-Free Milk at Low Temperature

Catalysts ◽

10.3390/catal11050527 ◽

2021 ◽

Vol 11 (5) ◽

pp. 527

Author(s):

Katarzyna Czyzewska ◽

Anna Trusek

Keyword(s):

Low Temperature ◽

Storage Temperature ◽

Competitive Inhibition ◽

Caloric Content ◽

Substrate Diffusion ◽

Galactose Inhibition ◽

The Subject ◽

And Storage ◽

Food Processes ◽

Hydrolysis Of

The current requirements of industrial biocatalysis are related to economically beneficial and environmentally friendly processes. Such a strategy engages low-temperature reactions. The presented approach is essential, especially in food processes, where temperature affects the quality and nutritional value foodstuffs. The subject of the study is the hydrolysis of lactose with the commercial lactase NOLA™ Fit 5500 (NOLA). The complete decomposition of lactose into two monosaccharides gives a sweeter product, recommended for lactose intolerant people and those controlling a product’s caloric content. The hydrolysis reaction was performed at 15 °C, which is related to milk transportation and storage temperature. The enzyme showed activity over the entire range of substrate concentrations (up to 55 g/L lactose). For reusability and easy isolation, the enzyme was encapsulated in a sodium alginate network. Its stability allows carrying out six cycles of the complete hydrolysis of lactose to monosaccharides, lasting from two to four hours. During the study, the kinetic description of native and encapsulated NOLA was conducted. As a result, the model of competitive galactose inhibition and glucose mixed influence (competitive inhibition and activation) was proposed. The capsule size does not influence the reaction rate; thus, the substrate diffusion into capsules can be omitted from the process description. The prepared 4 mm capsules are easy to separate between cycles, e.g., using sieves.

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Cold-Active β-Galactosidases: Insight into Cold Adaption Mechanisms and Biotechnological Exploitation

Marine Drugs ◽

10.3390/md19010043 ◽

2021 ◽

Vol 19 (1) ◽

pp. 43

Author(s):

Marco Mangiagalli ◽

Marina Lotti

Keyword(s):

Low Temperature ◽

Molecular Mechanisms ◽

Building Blocks ◽

Cold Active ◽

Cold Adaption ◽

Glycosyl Donor ◽

Pharmaceutical Industries ◽

Biotechnological Processes ◽

Hydrolysis Of ◽

Insight Into

β-galactosidases (EC 3.2.1.23) catalyze the hydrolysis of β-galactosidic bonds in oligosaccharides and, under certain conditions, transfer a sugar moiety from a glycosyl donor to an acceptor. Cold-active β-galactosidases are identified in microorganisms endemic to permanently low-temperature environments. While mesophilic β-galactosidases are broadly studied and employed for biotechnological purposes, the cold-active enzymes are still scarcely explored, although they may prove very useful in biotechnological processes at low temperature. This review covers several issues related to cold-active β-galactosidases, including their classification, structure and molecular mechanisms of cold adaptation. Moreover, their applications are discussed, focusing on the production of lactose-free dairy products as well as on the valorization of cheese whey and the synthesis of glycosyl building blocks for the food, cosmetic and pharmaceutical industries.

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