scholarly journals Potentiality Assessment of Fish Scale Biodegradation Using Mangrove Fungi Isolated from Indian Sundarban

2014 ◽  
Vol 14 ◽  
pp. 68-76
Author(s):  
Vaswati Nandy ◽  
Madhurima Bakshi ◽  
Somdeep Ghosh ◽  
Harish Sharma ◽  
Barnali Ray Basu ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Agar Plate ◽  
Chemical Properties ◽  
Blue Staining ◽  
Fish Scale ◽  
Mangrove Fungi ◽  
Carbon And Nitrogen ◽  
Physico Chemical ◽  
Cotton Blue ◽  
Carbon And Nitrogen Content

The mangrove fungi, morphologically and physiologically adapted in a different habitat, were isolated from mangrove habitat of Jharkhali, Sundarban, India. The physico-chemical properties like temperature, pH, soil colour, moisture content, carbon and nitrogen content of soil determines the load of microbial population. The soil sample was serially diluted and plated on potato dextrose agar plate with ampicillin to obtain fungal isolates. Total of six isolates were characterized microscopically by lacto phenol cotton blue staining. Two of them were identified as Aspergillus niger and Penicillium sp. and are subjected to biodegradation of fish scale, the major waste of fish processing industries. Aspergillus niger was found to be the best for degradation of fish scale powder by producing zone of clearance. Moreover, media without fish scale didn’t show any zone of clearance indicates the mangrove fungi are capable of degrading the fish scale component

PROPRIETES CHIMIQUES ET PHYSIQUES DE LA MATIERE ORGANIQUE NONDIALYSABLE EXTRAITE DE QUATRE PODZOLS DU QUEBEC

1972 ◽  
Vol 52 (1) ◽  
pp. 1-17 ◽  
Author(s):  
ANTONIO GONZALEZ ◽  
GÉRARD HUBERT
Keyword(s):  
Chemical Properties ◽  
Great Similarity ◽  
Metallic Ions ◽  
Carbon And Nitrogen ◽  
Molecular Weights ◽  
Carbon And Nitrogen Content ◽  
Physical And Chemical ◽  
Humic Fractions ◽  
Molecular Weight Fractions

The physical and chemical properties of non-dialysable (>48 A) humic and fulvic fractions of four podzols from the Province of Quebec were studied. Extraction was made with 0.1 M sodium pyrophosphate. Analysis of the fractions showed that, in spite of a prolonged dialysis, considerable quantities of metallic ions remained bound to compounds of high molecular weights. The humic fraction showed, in general, a carbon and nitrogen content sensibly more even than the fulvic fraction. In the spodic horizon, humic fractions have a very similar carbon content. It is also in this horizon that are found the highest percentages of iron and aluminium. The distribution of the principal nitrogen compounds in each fraction was studied after acid hydrolysis. A great similarity in the distribution of the nitrogen was found, independently of its origin (horizon or profile). It has not been possible to find a relation between profiles, from the study of acid groups (carboxilic or phenolic). Absorption spectra with ultraviolet, visible, and infrared radiations were studied. The characterization of a profile from optical properties of high molecular weight fractions was particularly difficult, considering the great similarity between observed spectra. Differences in iron bound to the fulvic fraction were observed by means of electrophoresis. The behaviour of the humic and fulvic fractions towards H+ and Ca2+ ions was also studied.

scholarly journals UTILISATION OF BIO-CHEMICAL PROPERTIES OF JUTE IN CONVERSION OF NON-ARABLE LATERITIC WASTELANDS

2019 ◽  
Author(s):  
SAMYA SENGUPTA
Keyword(s):  
Chemical Properties ◽  
Cost Effective ◽  
Cellulose Derivatives ◽  
Low Carbon ◽  
Vegetation Growth ◽  
Carbon And Nitrogen ◽  
Carbon And Nitrogen Content ◽  
Water Retention Properties ◽  
Poor Soil ◽  
Jute Geotextile

Jute can be effectively used for conversion and reclamation of lateritic wastelands of our country to make them arable. It is a widely grown natural biodegradable, eco-friendly and cost-effective fibre. Jute contains useful chemical substances like lignin, hemi-cellulose, alpha-cellulose and other cellulose derivatives, which make significant contribution to pest-resistant and water retention properties of soil. They help to regulate the Carbon and Nitrogen cycle in the soil and also attract bacterial agglomeration. We, on behalf of a voluntary organisation, carried out an experimental work at a lateritic wasteland at Garhbeta of Paschim Medinipur District of West Bengal to check soil erosion and improve fertility of land using jute geotextile. The soil has very low carbon and nitrogen content and is acidic in nature having no or very poor vegetation growth. After the experiment the land erosion has been completely restricted and due to bio-degradation of jute, the nitrogen and carbon content of the soil have increased considerably. The denuded wasteland has now become fertile and arable. The soil is gradually attaining the character of a ‘medium soil’ from a ‘very poor’ soil. The method is easily adoptable, cost-effective and eco-friendly as it uses only jute as the component for conversion of the land. This paper has tried to correlate the unique bio-chemical properties of jute with the agricultural and geological findings of the field-trial.

Decoration of specific sites on freeze-fractured membranes

1978 ◽  
Vol 36 (2) ◽  
pp. 140-141
Author(s):  
H. Gross ◽  
H. Moor
Keyword(s):  
Pure Water ◽  
Freeze Fracture ◽  
Chemical Properties ◽  
Surface Forces ◽  
Sulfate Pentahydrate ◽  
Copper Sulfate Pentahydrate ◽  
Physico Chemical ◽  
Water Of Hydration ◽  
Small Container ◽  
Binding Forces

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.

Physico-Chemical Properties of Recombinant Desulphatohirudin

1990 ◽  
Vol 63 (03) ◽  
pp. 499-504 ◽  
Author(s):  
A Electricwala ◽  
L Irons ◽  
R Wait ◽  
R J G Carr ◽  
R J Ling ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Gel Filtration ◽  
Chemical Properties ◽  
Alpha Helix ◽  
Apparent Molecular Weight ◽  
Correlation Spectroscopy ◽  
Nmr Studies ◽  
Recombinant Hirudin ◽  
Physico Chemical ◽  
Recombinant Molecule

SummaryPhysico-chemical properties of recombinant desulphatohirudin expressed in yeast (CIBA GEIGY code No. CGP 39393) were reinvestigated. As previously reported for natural hirudin, the recombinant molecule exhibited abnormal behaviour by gel filtration with an apparent molecular weight greater than that based on the primary structure. However, molecular weight estimation by SDS gel electrophoresis, FAB-mass spectrometry and Photon Correlation Spectroscopy were in agreement with the theoretical molecular weight, with little suggestion of dimer or aggregate formation. Circular dichroism studies of the recombinant molecule show similar spectra at different pH values but are markedly different from that reported by Konno et al. (13) for a natural hirudin-variant. Our CD studies indicate the presence of about 60% beta sheet and the absence of alpha helix in the secondary structure of recombinant hirudin, in agreement with the conformation determined by NMR studies (17)

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