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Nath, R. K.
- Studies on the Interaction of Klebsiella K34 Capsular Polysaccharide with Oppositely Charged Dyes and Surfactants
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Authors
Affiliations
1 Department of Chemistry, D. D. M. College, Khowai, Tripura-799 202, IN
2 Department of Chemistry, Tripura University, Suryamaninagar, Tripura-799 130, IN
3 Department of Chemistry, N. S. Mahavidyalaya, Udaipur, Tripura-799 120, IN
4 Department of Chemistry, University of North Bengal, P.O. North Bengal University, District:Darjeeling, West Bengal-734 013, IN
1 Department of Chemistry, D. D. M. College, Khowai, Tripura-799 202, IN
2 Department of Chemistry, Tripura University, Suryamaninagar, Tripura-799 130, IN
3 Department of Chemistry, N. S. Mahavidyalaya, Udaipur, Tripura-799 120, IN
4 Department of Chemistry, University of North Bengal, P.O. North Bengal University, District:Darjeeling, West Bengal-734 013, IN
Source
Journal of Surface Science and Technology, Vol 24, No 1-2 (2008), Pagination: 21-38Abstract
Spectral studies on the interaction of capsular polysaccharide (SPS) isolated from Klebsiella serotype K34, with oppositely charged dyes and surfactants have been reported. The SPS was acidic in nature and induced strong metachromacy (∼110 nm blue shift) in the cationic dye pinacyanol chloride (PCYN) which was due to "card-pack stacking" of individual dye monomers on the surface of the polyanions. Reversal of metachromacy offered a qualitative measurement of stability and nature of binding associated with PCYN-SPS complex. Thermodynamic parameters of dye-polymer complex were evaluated. SPS-cationic dye acridine orange (AO) interaction in aqueous solution have been investigated fluorimetrically. Dye incorporation technique was employed to study cationic surfactant-polymer interactions. Interactions between the polyelectrolyte and oppositely charged surfactants lead to the formation of induced premicelles at surfactant concentrations lower than the CMC of the surfactants and the corresponding binding constant was evaluated. Such studies revealed that the surfactant is not exclusively bound electrostatically, but also through hydrophobic interactions.Keywords
Dye, Surfactant, SPS, Klebsiella, Binding Constant.- Dynamic Light Scattering and Viscometric Studies on the Interaction of Bacterial Capsular Polysaccharide, Klebsiella K40, with Pure and Mixed Surfactant Systems in Aqueous Media
Abstract Views :180 |
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Authors
Affiliations
1 Department of Chemistry, Tripura University, Suryamaninagar, Tripura-799 130, IN
2 Deparatment of Chemistry, Gyan Jyoti College, Siliguri, West Bengal, IN
3 Department of Chemistry, University of North Bengal, P.O. North Bengal University, D Darjeeling, West Bengal-734 430, IN
1 Department of Chemistry, Tripura University, Suryamaninagar, Tripura-799 130, IN
2 Deparatment of Chemistry, Gyan Jyoti College, Siliguri, West Bengal, IN
3 Department of Chemistry, University of North Bengal, P.O. North Bengal University, D Darjeeling, West Bengal-734 430, IN
Source
Journal of Surface Science and Technology, Vol 29, No 1-2 (2013), Pagination: 101-112Abstract
Capsular polysaccharide (SPS) is an integral component of gram negative bacteria, Klebsiella. The interaction of SPS isolated from Klebsiella K40 serotype with oppositely charged pure surfactants and cationic-nonionic mixed surfactants were investigated by dynamic light scattering and viscometric technique. Variation in the hydrodynamic radius and zeta potential were studied by dynamic light scattering method. Nature of the interaction is governed by concentration of the surfactants, charge density, surfactant head group and the CMC of the surfactants. Micellar effects of the pure and mixed surfactants on binding with the SPS are presented in this paper.Keywords
Capsular Polysaccharide, Dynamic Light Scattering, Viscometry, CMC.- Effect of Orgalutin on Menorrhagia Group of Dysfunctional Uterine Haemorrhage
Abstract Views :192 |
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Authors
Shankar Sarbajna
1,
N. Choudhury
1,
J. Mitra
1,
G. Mukherjee
1,
G. C. Sarkar
1,
R. K. Nath
1,
M. K. Chakraborty
1
Affiliations
1 Department of Obstetrics & Gynaecology, Institute of Post Graduate Medical Education and Research, Calcutta, IN
1 Department of Obstetrics & Gynaecology, Institute of Post Graduate Medical Education and Research, Calcutta, IN
Source
The Indian Practitioner, Vol 33, No 1 (1980), Pagination: 27-35Abstract
No Abstract.- Interaction of Cationic Dye with Bacterial Cell Surface Polysaccharide from Klebsiella K40
Abstract Views :185 |
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Authors
Affiliations
1 Department of Chemistry, Calcutta University Post Graduate Centre, Agartala, Tripura-799004, IN
1 Department of Chemistry, Calcutta University Post Graduate Centre, Agartala, Tripura-799004, IN
Source
Journal of Surface Science and Technology, Vol 3, No 1 (1987), Pagination: 25-30Abstract
Interaction of cationic dye pinacyanol chloride with bacterial cell surface capsular polysaccharide isolated from Klebsiella K40 has been spectrophotometrically Investigated. The capsular polysaccharide of Klebsiella K40 is a heteroglycan which consists of pentasaccharide repeating units comprising one residue each of unsubstituted mannose, 4-substituted glucuronic acid, 3-substituted galactose, 2, 4-disubstituted rhamnose, and 2-substituted rhamnose. It Induces a metachromatic blue shift in the visible spectrum of the pinacyanol chloride from 600 nm to 500 nm. The metachromatic spectral changes have been studied during interaction of the dye cation with the polyanion at different polymer/dye molar ratios. A stochiometry of 11 for the polymer/dye has been found to exist in the polyanion-dye compound. The complete reversal of polymer-induced metachromasy has also been observed by the addition of ethanol and urea.Keywords
Pinacyanol Chloride, Poly Saccharide, Metachromasy.- Indigenous Technological Knowledge (ITK) for Pest Management in Tinsukia District of Assam
Abstract Views :288 |
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Authors
Affiliations
1 Krishi Vigyan Kendra (A.A.U.), Tinsukia (Assam), IN
1 Krishi Vigyan Kendra (A.A.U.), Tinsukia (Assam), IN
Source
Rashtriya Krishi (English), Vol 12, No 1 (2017), Pagination: 1-3Abstract
The present study describes the ITK of pest management practiced by the farmers of Tinsukia districts of Assam. The information was collected on the basis of personal interview to each of the farmer through a questionnaire. A total sample of 200 farmers of twenty different villages was selected randomly from three rural developmental blocks of the district. All in about 30 ITKs were collected and documented. The percentage of farmers practicing different ITKs ranged from 11 to 78.65 per cent. Identification of scientifically sound indigenous practices may serve as the input for valid scientific management for large scale use of insect pest management and in generation of low cost, location specific and appropriate technology.References
- Deka, M.K., Bhuyan, M. and Hazarika, L.K. (2006). Traditional pest management practices of Assam. Indian J. Traditional Knowledge, 5 (1): 75-78.
- Kolawole, O.D. (2001). Local knowledge utilization and sustainable rural development in the 21st century. Indigenous Knowledge Develop. Monitor., 9 (3): 13-15.
- Rajasekaran, B.D., Warren, D.M. and Babu, S.C. (1991). Indigenous natural resource management systems for sustainable agriculture development - A global perspective. J. Internat. Develop., 3 (4): 387-401.
- Venkata Ramaiah, P. and Rama Raju, K.V. (2004). Blending of Indigenous Technologies with judicious use of external inputs for sustainable agriculture paper Peoples Wisdom. Gosh, S.N (ed.). National Council of Development Communication, Sundarpur, Varanasi, pp. 249-253
- Field Studies on the Nature of Damage Caused by Sugarcane Plassey Borer Chilo tumidicostalis Hampson (Lepidoptera:Pyralidae)
Abstract Views :188 |
PDF Views:0
Authors
Affiliations
1 Krishi Vigyan Kendra (A.A.U.), Tinsukia (Assam), IN
2 Department of Entomology, Assam Agricultural University, Jorhat (Assam), IN
1 Krishi Vigyan Kendra (A.A.U.), Tinsukia (Assam), IN
2 Department of Entomology, Assam Agricultural University, Jorhat (Assam), IN
Source
International Journal of Plant Protection, Vol 11, No 1 (2018), Pagination: 76-79Abstract
Field experiment was conducted to investigate the nature of damage caused by sugarcane plassey borer C. tumidicostalis. Generally, there are two phases of infestation of the pests known as primary and secondary infestation. From the investigation, it was observed that the mean number of internodes damaged was more or less similar (1 to 3 internodes) in both the primary and secondary infestation. The mean number of damaged internode was 1.88, 2.06 and 2.42 which was slightly more in the secondary infested canes with 1.78, 2.56 and 2.74 in August, September and October, respectively. However, there was a great variation in the length of spindle damaged by the larvae in primary and secondary infested cane. Similarly, the mean length of internode damaged was more in primary infested canes than secondary infested canes. The mean proportion damaged length caused by the larvae in primary infested cane was 0.46, 0.45 and 0.41 during August, September and October as against 0.18, 0.13 and 0.16 in secondary infested cane, respectively.Keywords
Plassey Borer, Primary Infestation, Secondary Infestation, Spindle.References
- Anonymous (2014). Economic survey of Assam. Directorate of Economics and Statistics, Assam Planning and Development Department, Government of Assam. pp. 71.
- Bhuyan, U. (1999). Population dynamics of sugarcane plassey borer, Chilo tumidicostalis (Crambidae: Lepidoptera) and its rate of increase on some sugarcane cultivars. M.Sc. Thesis, Assam Agricultural University, Jorhat, Assam (India) .
- Box, H.E. (1953). List of sugarcane insects. Commonw Inst. Ent., London, United Kingdom, pp. 101.
- Butani, D.K. (1961). Insect pest of sugarcane in Bihar. Indian Sugar, 11: 649-54.
- Gupta, B.D. and Avasthy, P.N. (1959). Biology and control of stem borer. Chilo tumidicostalis Hmpsn. Proc. Int. Soc. Sug. Cane Technol.,10: 886-901.
- Khanna, K.L., Nigam, L.N. and Puri, V.D. (1957). Chilo tumidicostalis Hmpsn, serious stem borer pests of sugarcane in Bihar. Proc. Indian Acad. Sci., 46 (B) : 75-95.
- Phukan, E. (1978). Comparative resistance of certain sugarcane varieties to Ceratovacuna lanigera (Zehntner) (Aphididae: Homoptera) and effect of meteorological factors on the natural population build up of this pest. M.Sc. Thesis, Assam Agricultural University, Joraht, Assam (India).
- Rajmedhi, J. (1992). Biology of sugarcane plassey borer C. tumidicostalis Hmpsn (Pyralidae: Lepidoptera). M.Sc. Thesis, Assam Agricultural University, Jorhat, Assam (India).
- Integrated Pest Management in Potato with Special Reference to ITK
Abstract Views :224 |
PDF Views:1
Authors
Affiliations
1 District Agriculture Office, Tinsukia (Assam), IN
2 Krishi Vigyan Kendra (A.A.U.), Tinsukia (Assam), IN
1 District Agriculture Office, Tinsukia (Assam), IN
2 Krishi Vigyan Kendra (A.A.U.), Tinsukia (Assam), IN
Source
International Journal of Plant Protection, Vol 11, No 2 (2018), Pagination: 141-145Abstract
An experiment was conducted in the Horticultural orchard of Assam Agricultural University, Jorhat from 2014-15 and 2015-16 to develop IPM module against pest and diseases of potato. Ten different IPM modules were followed against the target pest and diseases. Out of these, the IPM module consisting of soil application of MOC followed by high ridge planting and use of yellow sticky trap followed by application of malathion 5 per cent dust and Ridomil MZ-72 @ 0.01% recorded lowest infestation of mole cricket and red ant with 3.42 and 7.71 per cent, respectively with a highest yield of 248.61 q/ha. Likewise, the per cent increase in yield and benefit cost ratio was observed highest (8.54) in the module with low incidence of late blight and leaf roll disease.Keywords
IPM, Mole Cricket, Red Ant, Malathion, Ridomil MZ-72.References
- Anonymous (2012). Reports. Directorate of Economics and Statistics, Government of Assam, India.
- Bajpai, N.K., Swami, Hemant, Kumar, Ashok and Gupta, I.N. (2005). Development of IPM modules for brinjal shoot and fruit borer, Leucinodes orbonalis Guene. National Conference on Applied Entomology: current status, challenges and opportunities. 2005, September 26-28pp.
- Butani, D. K. and Verma, S. (1976). Pest of vegetables and their control: sweet potato. Pesticides, 10 (2) : 36-38.
- Chakraborty, S., Chakraborty, N. and Datta, A. (2000). Increased nutritive value of transgenic potato by expressing a non-allergenic seed albumin gene from Amaranthus hypochondrioccus. Proceeding of National Academy of Science USA., 97 (7) : 3724–3729.
- Dash, C.K., Hassan, K., Pramanik, M.E.A., Rashid, M. H. and Choudhury, A.R. (2013). Development of management strategies against red ant (Dorylus orientalis, Westwood) of potato. Universal J. Plant Sci.,1 (3): 74-77.
- FAOSTAT (2015). faostat.fao.org.Retrieved 25 January 2015.
- Hudson, W. G. (1985).Other behaviour, damage and sampling. In T. J. Walker (ed.), Mole crickets in Florida. Florida Agric. Exp. Sta. Bull. 846: 16-21.
- Islam, M. N., Karim, M. A., Mannan, M. A., Choudhury, J. C. S. and Islam, M. (1999). Integrated management of the eggplant shoot and fruit borer, Leucinodes orbonalis Guenee (Lepidoptera: Pyralidae), based on insecticide. Bangladesh J. Entomol., 9 (1–2): 75–85.
- Konar, A., Paul,S.,Basu, A. and Chattri, M. (2005). Integrated management of mole cricket attacking potato in Eastern Gangclic plains of West Bengal. Potato J., 32: 3-4.
- Patnaik, H. P. and Singh, K. M. (1997). Efficacy of Bacillus thuringiensis Berliner and conventional insecticides against brinjal shoot and fruit borer under different spraying schedule. Orissa J. Hort., 25 (1): 18-21.
- Prabhat, K. and Johnsen, Steffen (2000). Life cycle studies on fruit and shoot borer, Leucinodes orbonalis and natural enemies of insect pest of eggplant (Solanum melongena). J. Appl. Biol., 10 (2) : 178-184.
- Ram, K., Misra, S. S. and Singh, L. (1993). Incidence of red ant. Dorylus orientalis on different genotypes. J. Indian Potato Assoc., 20 : 62.
- Sohi, A. S. (1966). Studies on the brinjal little leaf virus and its vector. M.Sc. Thesis, Punjab Agricultural University, Ludhiana, Punjab (India).
- Trivedi and Rajagopal, D. (1999). Integrated pest management in potato. IPM System in Agriculture, Cash Crops.,6:299 -313.