IR@NEIST - North East Institute of Science and Technology (CSIR)
Not a member yet
339 research outputs found
Sort by
Induction of systemic resistance against fusarial wilt in pigeon pea through interaction of plant growth promoting rhizobacteria and rhizobia
Get PDFA Bacillus cereus strain BS 03 and a Pseudomonas aeruginosa strain
RRLJ 04 were studied for their effect on induction of systemic
resistance against Fusarium udum wilt in pigeon pea, both individually
and in combination with a rhizobial strain RH 2. Split root experiments
confirmed that plants with combination treatment of PGPR and
Rhizobium can survive longer than individual treatments and control. An
increased level of defense-related enzymes, viz., L-phenylalanine
ammonia lyase (PAL), peroxidase (POX) and polyphenol oxidase
(PPO), were also recorded in co-inoculated plants. Production of �-1,3-
glucanase and polymethyl galacturonase by the pathogen in culture
medium was also sharply reduced in presence of both the PGPR
strains. An increased level of phenol content with a decreased level of
nitrogen content was recorded in the leaves of bacterized plants grown
in pathogen infested soil. Presence of BS 03 in the culture medium
stimulated the production of chlamydospore-like structures in the funga
Banana plant - potential source of raw material for hand made paper industry
Get PDFUtilization of banana plant for making hand made paper and certain grades of specialty paperboards have been
investigated. The physiochemical characteristics of the three species of banana plants viz. Musa velutina, M. paradisica
and M. sapientum available in NEregion of India were studied. The plants consists an average of 25 -27 %sheath, 42 -48
% core and 27 - 30 % leaves. The cellulose content was varied from 59 - 63 %, lignin from 15.3 - 18.2 %and pantosan
from 13.5 - 15.2 %. in all the three plant species. The cooking experiments were conducted in an open vat under pressure
free condition using NaOH and Na2C03 as cooking chemicals. The percentages of cooking chemicals were varied from 6-
10 %maintaining bath ratio at 1:6. The unbleached pulp yield was recorded 48 - 52 %. The bleaching of the pulps was
carried out using H- E- H202sequence to get 60 - 65 %brightness. The physical strength properties of hand made paper
made from these three plant species showed tensile index 55.4 - 62.8 Nmg-1,Tearindex 10.4 - 15.2 mNm2t, Burstindex
6.2 - 8.7 Kpm2g-1with Double fold values 300+. However certain specialty paperboard such as leatherboard made out of
banana pulp in combination 'with bamboo pulp showed breaking load 120 - 145 (Kg),Tensile strength (dry)220 - 250
Kg/cm2,elongation 39 - 42 %, linearshrinkage 4.0% and areashrinkage 4.2 - 4.5%. Another specialty boardssuch as solid
toughened board made from the blends of ragand banana pulp showed very good physical strength with breaking load
value 160 kg and 90 kg respectively for30 cm and 60cm span with minimum absorption of moisture
Microbial growth reduction in sewage sludge by stirred ball mill disintegration and estimation by respirometry
Get PDFBACKGROUND: Excess biomass generation in wastewater treatment plants is an unavoidable byproduct of the
degradation process. Treatment and disposal of sewage sludge from wastewater treatment plants accounts for
about half or even up to 60% of the total operating cost. The present study focuses on the reduction of excess sludge
generation by engineering the microbes through mechanical energy inputs by means of stirred ball milling
Ethnomedicinal plants from Gibbon wildlife Sanctuary of Assam, Indigenous ethnomedicinal plants
Get PDFEnantioselective permeation of racemic alcohol through polymeric membrane
Get PDFCopolymer of 1,2-bis(2-methyl-1-triethylsiloxy-1-propenyloxy)ethane and dialdehyde have been synthesized by Mukaiyama Aldol polymerization
using lipase as the catalyst. The chirality of the polymer was tested by optical rotation and circular dichroism study. The membrane forming
ability of this chiral polymer was examined by casting the membrane in three different solvents viz., N-methyl-2-pyrilidone (NMP), dimethyl
formamide (DMF) and dimethyl acetamide (DMAc) using the phase inversion method and it was found that chiral polymer–NMP membranes
formed more uniform and regular surface morphology as was evident from SEM analysis. The enantioselective membranes prepared in the solvents
was tested for resolution of racemic alcohol and it was found that NMP is the best solvent for obtaining highest enantioselectivity value. It was
also found that the enantioselectivity for adsorption favoured the (S)-isomer whereas permeation favoured the (R)-isomer which is confirmed from
interpretation of the adsorption isotherm by Langmuir model. Accordingly, the enantioselective permeation was caused by suppression of the
(S)-isomer permeation. Optical resolution of (±)trans-sobrerol was achieved by pressure driven permeation through the membrane. The highest
enantioselectivity, enantiomeric excess and permeation co-efficient was obtained as 98.59%, 20.42 and 13.627m2 h−1, respectively. With an
increase in polymer content in the membrane, the permeation rate increases
A simple, green and one-pot four-component synthesis of 1,4-dihydropyridines and their aromatization
Get PDFA simple, green and cost-effective protocol was achieved for the solvent free synthesis of 1,4-dihydropyridines catalyzed by
AlCl3 Æ 6H2O as a mild and effective catalyst at 60 �C in high yields. 1,4-Dihydropyridines thus formed were aromatized to pyridines
by in situ generation of HOCl employing AlCl3 Æ 6H2O/H2O2/H2O/EtOH as an excellent reagent system under domestic microwave irradiation
(MWI). Both the synthesis and oxidation steps were efficiently accomplished in one-pot four-component fashion following the
same protoco
