SOLUTE-SOLVENT INTERACTIONS OF GLYCINE, α-ALANINE, β-ALANINE AND PHENYL ALANINE IN AQUEOUS SUCROSE SOLUTIONS AT 298.15 K: AN ULTRASONIC STUDY
Ultrasonic velocity of the solutions of glycine, a-alanine, β-alanine and phenyl alanine in aqueous sucrose solutions have been measured at 298.15 K. From the experimental data the derived acoustic parameters like isentropic compressibility (Ks), acoustic impedance (Z), molar compressibility(W), molar sound velocity(R), relative association(RA), intermolecular free length(Lf), free volume (Vf), internal pressure(πi), ultrasonic attenuation (α/f2) and van der Waals constant (b) have been obtained. The non-linearity parameters (B/A), isothermal compressibility (βT), co-efficient of thermal expansion (α) and heat capacity ratio (γ) have also been calculated. These parameters have been used to discuss the molecular interactions in the solutions.
ISOLATION AND SCREENING OF SOIL MICROBES FOR EXTRACELLULAR CHITINASE ACTIVITY
Present investigation was aimed to isolate and screen microbiota from various soil samples collected from different regions of Kalaburagi, Karnataka, India for chitinase production. In simultaneous isolation and screening of microbes from fifty four soil samples, a total of seventy five microbial isolates were found with chitinolytic activity. These 75 isolates include 51 bacteria, 11 fungi and 13 actinomycetes. Among these, nineteen isolates exhibited sound, thirty three isolates exhibited moderate and twenty three isolates shown poor chitinase activity on chitin agar plate. Further, two bacterial, two actinomycetes and a fungal isolate with good chitinase activity were selected and subjected for chitinase production under submerged fermentation. As a result, comparatively an actinomycete KLSL-55 emerged as the highest enzyme producer with the activity of 84.66 IU.
ROUGH SET APPROACH FOR FEATURE SELECTION AND GENERATION OF CLASSIFICATION RULES OF HYPOTHYROID DATA
Rough Set theory (RST) has been successfully employed in several researches for feature selection, classification, dependencies among the attributes and rule induction. This paper presents two applications using rough sets. The first application deals with feature selection which uses RST for classifying hypothyroidism. The second application deals with generating classification rules from 498 samples of hypothyroid data.
STUDIES ON TOTAL LIPID CONTENT OF SOME WILDEDIBLE FRUITS USING CONVENTIONAL AND ULTRASOUND
The present communication deals with the investigation of lipid contents of some wild fruits of Diospyros melanoxylon, Pithecellobium dulce, Carrisa congesta, Lantena camera, opuntia and Aegle marmelis. The total crude lipid determination was conducted using conventional and ultrasound assisted extraction technique using methanol, methanol-chloroform and petroleum ether as a solvent. It has been observed that ultrasound assisted extraction is superior in terms of time (1-2 hr) and yield of the crude lipids. As there is no detailed work done on lipid profile of nutritious wild fruits as such, present study focused on the food value and exploration of underutilized edible fruits in Maharashtra, India.
COMPOSITION IN FATTY ACIDS, STEROLS AND TOCOPHEROLS OF VEGETABLE OIL EXTRACT FROM RED ONION AMPOSTA OF TETOUAN REGION
This work aims to determine the physicochemical characteristics and the fatty acid, sterols and tocopherols from unconventional vegetable oil obtained by extraction with hexane from Amposta red onion seeds Allium cepa L. in the Tetouan region in northern Morocco. GC analysis of this oil in fatty acid shows a predominance of linoleic acid (62.3 %) and oleic acid (27.7 %) and sterol a predominance of β -sitosterol (61.9%) with a overall rates of sterols 96.1 mg /100g. Finally, analysis the tocopherols of this oil by HPLC give a rate of 1666 mg/Kg the tocopherols with 47.44% of γ-tocopherols.
PHYTOCHEMICALS SCREENING AND ACID-BASE INDICATOR PROPERTY OF ETHANOLIC EXTRACT OF ALTHEA ROSEA FLOWER
Secondary metabolites are unwanted compounds released by plants during excretion process but some of them are also used by the plants as protective agents. The presences of these compounds were reported to have medicinal properties. In the present study phytochemicals screening of the ethanolic extract of Althea rosea flower (garden hollyhock) revealed the presence of alkaloids, flavonoid, triterpinoids, saponins, tannins, cardiac glycoside, and phenolic compounds. Indicators currently in-used cause environmental pollution and they are hazardous to the living organism. The ethanolic extract of Althea rosea flower (garden Hollyhock) shows a perfect colour change at equivalent point during acid base titration as compared with synthetic indicators. Therefore the extract from this flower could be used as replacement for both methyl orange and phenolphthalein in neutralization reaction.