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Murugesan, S.

• Induced Defence Research and Potential Application of Induced Defences in Forestry

Abstract Views :253  |  PDF Views:1

Authors

S. Murugesan

Source

Indian Forester, Vol 130, No 11 (2004), Pagination: 1227-1234

Abstract

Utilization of induced defence in forest pest management has the potential to increase total forest productivity provided the factors which influence the induced resistance response in forest trees are understood. Of the many possible mechanisms that could be responsible for protecting trees from herbivores is induced plant chemical defences. Induced response vary spatially that they can remain localized or can spread from a damaged plant to an undamaged plant. Manipulation of induced plant defence by mechanical defoliation and in the regulation and stimulation of natural enemies influenced by chemical signals emitted from infested plants are also discussed.

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• Antifeedant and Antifungal Compounds from Dirca palustris

Abstract Views :259  |  PDF Views:0

Authors

S. Murugesan , R. S. Ramsewak , W. J. Mattson , M. G. Nair , C. Narayanan , V. Mohan

Source

Indian Forester, Vol 129, No 3 (2003), Pagination: 364-370

Abstract

Wide range of insect pests and fungal pathogens attack seedlings, saplings and trees of economic important viz., Teak, Neem, Bamboo, Eucalyptus and Casuarina. The study highlights those solvent extracts of D. palustris (leather plant) responsible for antifeedant activity against Teak defoliator Hyblaea puera and skeletonizer Eutectona machaeralis. It was tested for fungal toxicity against some forest tree pathogens also.

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• New Record of Blister Beetle on Neem-chameli : its Interaction with Flavonoid Pigments

Abstract Views :158  |  PDF Views:0

Authors

S. Murugesan , A. Balu

Source

Indian Forester, Vol 126, No 11 (2000), Pagination: 1243-1245

Abstract

No abstract

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• New Host Record and Host Selection Behaviour of some Entomophagous Insects of Forestry Tree Species of Arid and Semi-arid Region

Abstract Views :182  |  PDF Views:0

Authors

S. Murugesan , Ameenullah Khan , Shivesh Kumar , S. Durairaj

Source

Indian Forester, Vol 124, No 2 (1998), Pagination: 163-166

Abstract

No abstract

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• Varieties of Pearl Millet for the Maintenance of Corcyra cephalonica (Stainton) Culture towards the Detrimental Effect of the Predatory Habit of Tribolium castaneum (Herbst)

Abstract Views :221  |  PDF Views:0

Authors

S. Murugesan , R. Sundararaj , R. N. Mishra

Source

Indian Forester, Vol 123, No 2 (1997), Pagination: 175-179

Abstract

The activity of biological control agents like predators, parasitoids etc. attacking pests can depend upon the properties of the host on which it is developed. Therefore, the reproductive behavioural strategy of host eggs, Corcyra cephalonica were tried with different nutritive medium in order to produce the active and viable parasitoids like trichogrammatids, chrysopids etc against pest resurgence especially forest insect groups.

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• Record of Thosea bipartita (Limacodidae: Lepidoptera) on Azadirachta indica (neem) from Jodhpur, India

Abstract Views :195  |  PDF Views:0

Authors

R. Sundararaj , S. Murugesan

Source

Indian Forester, Vol 123, No 3 (1997), Pagination: 261-261

Abstract

No abstract

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• Blister Beetles as a Threat to Medicinal/ornamental Plants of Arid and Semi-arid Regions

Abstract Views :254  |  PDF Views:0

Authors

S. Murugesan , Shivesh Kumar , R. Sundararaj

Source

Indian Forester, Vol 123, No 4 (1997), Pagination: 341-344

Abstract

No abstract

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• New Record and Damage of Flower Thrips in the Introduced Tree Species of Arid and Semi-arid Region

Abstract Views :239  |  PDF Views:0

Authors

S. Murugesan , Shivesh Kumar

Source

Indian Forester, Vol 122, No 9 (1996), Pagination: 854-855

Abstract

No abstract

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• Achaea janata Linn (Noctuidae: Lepidoptera), a New Pest Record on Neem - its Management through Nuclear Polyhedrosis Virus

Abstract Views :446  |  PDF Views:0

Authors

S. I. Ahmed , S. Murugesan

Source

Indian Forester, Vol 121, No 1 (1995), Pagination: 63-63

Abstract

No abstract

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• Efficacy of Neem Seed Oil against the Babul Whitefly Acaudaleyrodes rachipora (Singh) (Aleyrodidae: Homoptera)

Abstract Views :222  |  PDF Views:0

Authors

R. Sundararaj , S. Murugesan , R. N. Mishra

Source

Indian Forester, Vol 121, No 11 (1995), Pagination: 1077-1080

Abstract

An experiment was conducted to study the efficacy of neem seed oil and some conventional against the babul whitefly Acadaleyrodes rachipora on Acacia senegal. The results revealed that neem seed oil at 0.5, 0.3 and even at 0.1 % concentrations were very active and suppressed the development of the whitefly significantly while monocrotophos and endosulfan were not effective to suppress this whitefly.

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• Antioxidant Properties of Ocimum sanctum in Broilers Treated with High Doses of Gentamicin

Abstract Views :533  |  PDF Views:548

Authors

A. Arivuchelvan ¹, S. Murugesan ¹, P. Mekala ¹

Affiliations
1 Department of Veterinary Pharmacology and Toxicology, Veterinary College and Research Institute, Namakkal, Tamilnadu, Pin code- 637 002, IN

Source

Indian Journal of Drugs and Diseases, Vol 1, No 6 (2012), Pagination: 143-146

Abstract

The present research work was carried out to study the antioxidant effect of Ocimum sanctum in broilers exposed to high doses of gentamicin, which is common in poultry practice of Tamilnadu. Two hundred and seventy day old broiler chicks of either sex were randomly divided into nine treatment groups of 10 each with three replicates. Different doses of gentamicin (30 mg/kg&50 mg/kg) single intramuscular injection, different inclusion level of Ocimum sanctum crude extract (1%&2 %) in feed and their combinations were tested. The results of the study revealed that gentamicin treatment produced significant increase in the lipid peroxidation level, and significant decrease in the antioxidant enzymes viz. superoxide dismutase and glutathione peroxidase. Ocimum sanctum inclusion showed significant reversal in all the above parameters, which clearly supports its free radical scavenging property when co-administered with high doses of gentamicin.

Keywords

Antioxidant, Broiler Chicks, Ocimum sanctum, Gentamicin

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References

• Abdel- Raheem IT, Abdel- Ghany AA and Mohamed GA (2008) Protective effect of Quercetin against gentamicin induced nephrotoxicity in rats. Biol. Pharm. Bull. 16, 46-49.
• Aruoma OI (1998) Free radicals, oxidative stress and antioxidants in human health and disease. J. American Oil Chemists’ Society, 75 (2), 199-212.
• Enver Yazar, Muammer Elmas, Vahdettin Altunok, Abdullah Sivrikaya, Esma Oztekin and Yavuz Osman Birdane (2003) Effects of aminoglycoside antibiotics on renal antioxidants, malondialdehye levels, and some serum biochemical parameters. Can. J. Vet. Res., 67(3), 239-240.
• Gupta SK, Prakash J and Srivastava S (2002) Validation of traditional claim of Tulsi, Ocimum sanctum Linn. as a medicinal plant. Indian J. Exp. Biol.40, 765-773.
• Marklund S and Marklund G (1974) SOD activity assay by the method of pyrogallol. Eur. J. Gerontol.17: 429-437.
• Ohkawa H, Ohishi N and Yagi K (1979) Assay of lipid peroxides in animal tissue by Thiobarbituric acid reaction. Anal. Biochem.95, 351-358.
• Pedraza - Chaverri J, Maldonado PD, Meddina-Champos N, Olivares-Corichi IM and Hernandez- Pando ML (2000) Garlic ameliorates gentamicin nephrotoxicity: relation to antioxidant enzymes. Radic. Biol. Med. 29(7), 602-611.
• Ramasamy L, Ling KY, Josepovitz C, Levine R and Kaloyanides GJ (2009) Effect of gentamicin on lipid peroxidation in rat renal cortex.Biol. Pharm. Bull. 32, 61-67.
• Rotruck JR. Pope A and Ganther HE (1973) Selenium-biochemical role as a component of glutathione peroxidase purification and assay. Sci. 17, 486-490.
• Snedecor GW and Cochran WG (1989) Statistical methods, 8thEdn.IOWA state Univ. Press. Ames.
• Tabassum I, Siddiqui ZN and Rizvi SJ (2009) Protective effect of Ocimum sanctum on lipid peroxidation, nucleic acids and protein against restraint stress in male albino rats. Biol. Med.1(2), 42-53.
• Vara Prasad Reddy LSS, Thangavel A, Leela V and NarayanaRaju KVS (2007) Effect of dietary supplementation of tulasi (Ocimum sanctum) and selenium on lipid peroxidation levels and growth rate in broiler chickens. Tamilnadu J. Vet. Anim. Sci. 3(3), 144-149.

• Immunomodulatory Effect of Ocimum sanctum in Broilers Treated with High Doses of Gentamicin

Abstract Views :413  |  PDF Views:508

Authors

A. Arivuchelvan , S. Murugesan , P. Mekala , R. Yogeswari

Source

Indian Journal of Drugs and Diseases, Vol 1, No 5 (2012), Pagination: 109-112

Abstract

The purpose of the study is to evaluate the immunomodulatory effect of Ocimum sanctum in broilers exposed to high dose of gentamicin which is common in poultry practice of Tamil Nadu. Two hundred and seventy day old broiler chicks of either sex were randomly divided into nine groups of 10 each with three replicates. Different doses of gentamicin (30mg/kg &50mg/kg) single intramuscular injection, different inclusion level of Ocimum sanctum crude extract (1 and 2 %) in feed and their combinations were tested. The results of the study revealed that gentamicin treatment produced significant reduction in serum total protein, albumin and globulin and numerical decrease in HI titre against Newcastle vaccine. The groups treated with Ocimum sanctum alone showed significant increase in all the above parameters. Dose dependent increase in all the parameters were noticed in the combination groups which clearly supports the immunoprotective effect of Ocimum sanctum.

Keywords

Ocimum sanctum, Gentamicin, Immunomodulation, Broiler

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References

• Alexander DJ (1988) Newcastle disease diagnosis. Newcastle disease, 1stedn. Kluwar Academic Pub, Boston. pp: 98-160.
• Buss WC, Robert Kauten and Keith Piatt M (1985) Inhibitory effects of gentamicin and ethacrynic acid on mammalian microsomal protein synthesis. J. Antimicrob. Chemother.15, 105-113.
• Mediratta PK, Dewan V, Bhattacharya SK, Gupta VS, Maiti S and Sen P (1998) Effect of Ocimum sanctum Linn. on humoral immune responses. Indian J. Med. Res. 87,384-388.
• Mode SG, Funde, ST, Waghmare SP and Kolte, AY (2009) Effect of herbal immunomodulator on body weight gain in immunosuppressed broiler birds.Vet. World. 2(7), 269-270.
• Mukherjee R, Das PK and Ram GC (2005) Immunotherapeutic potential of Ocimum sanctum Linn.Bovine subclinical mastitis.Rev. Vet. Sci. 79(1), 37-43.
• Prakash (2008) Protective effect of Ocimum sanctum on lead intoxicated cockerels. The J. Pharm. Exp. Therap. 232(1), 48- 55.
• Saleemi MK, Khan MZ, JavedI and Khan A (2009) Pathological effects of gentamicin administered intramuscularly to day-old broiler chicks. Exp. Toxicol. Pathol. 61, 425-432.
• Seethalakshmi B, Narasappa AP and Kenchaveerappa S (1982) Protective effect of Ocimum sanctum in experimental liver injury in albino rats. Indian J. Pharmacol. 14, 63-70.
• Singh S, Gupta M and Gautam S (2010) Adaptogenic potential of herbal immunomodulator as new therapeutic approach to combat swine influenza A/H1N1 crisis. J. Clin. Diag. Res. 4, 3003-3005.
• Snedecor GW and Cochran WG (1989) Statistical methods, 8thEdn.IOWA state Univ. Press. Ames.
• Varley H, Gowenback AH and Bell M (1980) Practical clinical biochemistry. 5thEdn.William Hiremann medical books Ltd., London. pp: 550-555.

• Immunomodulatory Effect of Withania Somnifera in Broilers Treated with High Doses of Enrofloxacin

Abstract Views :370  |  PDF Views:391

Authors

A. Arivuchelvan ¹, S. Murugesan ¹, P. Mekala ¹

Affiliations
1 Department of Veterinary Pharmacology and Toxicology, Veterinary College and Research Institute, Namakkal -637 002, Tamil Nadu, IN

Source

Indian Journal of Drugs and Diseases, Vol 2, No 4 (2013), Pagination: 276-279

Abstract

The effect of supplementation of Withania somnifera extract on immunomodulatory response in broilers treated with high doses of enrofloxacin in poultry was investigated. Ninety day old broiler chicks of either sex were randomly divided into nine groups of 10 each. Enrofloxacin was administered at 30 and 40 mg/kg orally for seven days during the third week and W. somnifera crude extract was added in the feed at 1 and 2 % from second week onwards and the effect of their combinations was evaluated. The results of the study revealed that enrofloxacin treatment produced highly significant reduction in serum total protein, albumin and globulin and numerical decrease in HI titre against Newcastle vaccine. The groups treated with W. somnifera alone did not differ significantly from the control in all above parameters. Dose dependent increase in all the parameters were noticed in the combination groups which clearly supports the immunoprotective effect of W. somnifera.

Keywords

Broilers, Immunomodulatory, Withania Somnifera, Enrofloxacin, HI Titre

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References

• Alexander DJ (1988). Newcastle disease diagnosis. Newcastle disease, 1stEdn., Kluwar Academic Pub, Boston, pp. 98-160.
• Anbalagan K and Sadique J (1981). Influence of an Indian medicine (Ashwagandha) on acute phase reactants in inflammation. Indian J. Exp. Biol., 19, 245-249.
• Bhattacharya A, Ghosal S and Bhattacharya SK (2001). Anti-oxidant effect of Withania somnifera glycowithanoloides in chronic foot shock stress-induced perturbations of oxidative free radical scavenging enzymes and lipid peroxidation in rat frontal cortex and striatum. J. Ethnopharmacol., 74, 1-6.
• Davis L and Kuttan G (1998). Suppressive effecct of cyclophosphamide induced toxicity by Withania somnifera extract in mice. J. Ethnopharmacol., 62, 209-214.
• Dhenge S, Shirbhate RN, Bahiram K, Wankar AK, Khandait VN and Patankar RB (2009). Haematobiochemical profile of broilers supplemented with Withania somnifera (Ashwagandha) and Andrographis paniculata (Bhumineem). The Indian J. Field Vet., 5(1), 124-127.
• Kuttan G (1996). Use of Withania somnifera as an adjuvant during radiation therapy.Indian J. Exp. Biol., 34(9), 854-856.
• Mishra LC, Singh BB and Simon Dagenais (2000). Scientific basis of the therapeutic use of Withania somnifera (Ashwagandha). A Rev. Alt. Med. Rev., 5(4), 334-345.
• Snedecor GW and Cochran WG (1989). Statistical methods, 8thEdn. IOWA state Univ. Press. Ames.
• Tokarzewski S (2002). Influence of enrofloxacin and chloramphenicol on the level of IgY in serum and egg yolk after immunostimulation of hens with Salmonella enteritidis antigens. Pol. J. Vet. Sci., 5(3), 151-158.
• Udayakumar R, Sampath Kasthurirengan, Thankaraj Salammal Mariashibu, Manoharan Rajesh, Vasudevan Ramesh Anbazhagan, Sei Chang Kim, Andy Ganapathi and Chang Won Choi (2009). Hypoglycaemic and hypolipidaemic effects of Withania somnifera ischolar_main and leaf extracts on Alloxan induced diabetic rats. Int. J. Mol. Sci., 10, 2367-2382.
• Varley H, Gowenback AH and Bell M (1980). Practical clinical biochemistry. 5thEdn. William Hiremann medical books Ltd., London. pp: 550-555.

• The Leaf-Feeding Geometrid Isturgia disputaria (Guenee)-A Potential Biological Control Agent for Prickly acacia, Vachellia nilotica subsp. indica (Benth.) Kyal. & Boatwr. (Mimosaceae) in Australia

Abstract Views :227  |  PDF Views:119

Authors

A. Balu ¹, S. Murugesan ¹, P. Senthilkumar ¹, R. Mahalakshmi ¹, K. Dhileepan ²

Affiliations
1 Institute of Forest Genetics and Tree Breeding, Coimbatore, Tamil Nadu, 641002, IN
2 Ecosciences Precinct, Biosecurity Queensland, Department of Agriculture, Fisheries & Forestry, 41 Boggo Road, Dutton Park, Qld 4001, AU

Source

Journal of Biological Control, Vol 28, No 2 (2014), Pagination: 81–86

Abstract

Prickly acacia (Vachellia nilotica subsp. indica), a native multipurpose tree in India, is a weed of National significance, and a target for biological control in Australia. Based on plant genetic and climatic similarities, native range surveys for identifying potential biological control agents for prickly acacia were conducted in India during 2008-2011. In the survey leaf-feeding geometrid, Isturgia disputaria Guenee (syn. Tephrina pulinda), widespread in Tamil Nadu and Karnataka States, was prioritized as a potential biological control agent based on field host range, damage potential and no choice test on non target plant species. Though the field host range study exhibited that V. nilotica ssp. indica and V. nilotica ssp. tomentosa were the primary hosts for successful development of the insect, I. disputaria, replicated no - choice larval feeding and development tests conducted on cut foliage and live plants of nine non-target acacia test plant species in India revealed the larval feeding and development on three of the nine non-target acacia species, V. tortilis, V. planiferons and V. leucophloea in addition to the V. nilotica ssp. indica and V. nilotica ssp. tomentosa. However, the proportion of larvae developing into adults was higher on V. nilotica subsp. indica and V. nilotica subsp. tomentosa, with 90% and 80% of the larvae completing development, respectively. In contrast, the larval mortality was higher on V. tortilis (70%), V. leucophloea (90%) and V. planiferons (70%). The no-choice test results support the earlier host specificity test results of I. disputaria from Pakistan, Kenya and under quarantine in Australia. Contrasting results between field host range and host use pattern under no-choice conditions are discussed.

Keywords

Prickly Acacia, Acacia nilotica, Native Range Survey, Biological Control, India.

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References

• Dhileepan K, Balu A, Ahmed SI, Singh S, Srivastava KK, Senthilkumar M, Murugesan S, Senthilkumar P, Gorain M, Sharma A, Sharma N, Mahalashmi R, Shivas R. 2010. New biocontrol opportunities for prickly acacia: exploration in India. pp 231-234. In: Zydembos, S.M. (Eds.). Proceedings of the 17^th Australasian Weeds Conference, September 2010, New Zealand. Dhileepan K, Senaratne KADW, Raghu S. 2006. A systematic approach to biological control agent exploration and prioritisation for prickly acacia (Acacia nilotica ssp. indica). Australian J Entomol. 45(4): 303-307.
• Jeffrey PL. 1995. Prickly acacia. pp 3-9 In: N. March (Ed) Exotic woody weeds and their control in North West Queensland. Department of Lands, Queensland, Australia. Kriticos D, Brown J, Maywald GF. 2003a. SPAnDX: a process-based population dynamics model to explore management and climatic change impacts on an invasive alien plant, Acacia nilotica. Ecol Modeling 163: 187-208.
• Kriticos D, Sutherst RW, Brown JR, Adkins SW, Maywald GF. 2003b. Climatic change and the potential distribution of an invasive alien plant: Acacia nilotica ssp. indica. Australia. J Appl Ecol. 40: 111-124.
• Kunjithapatham Dhileepan, Ayyapillai Balu, Selvaraj Murugesan, Ponnusamy Senthilkumar, Roger G. Shivas. 2013. Survey and prioritisation of potential biological control agents for prickly acacia (Acacia nilotica subsp. indica) in southern India, Biocontrol Sci Technol. 23(6): 646-664
• Lockett CJ, Palmer WA. 2003. Rearing and release of Homichloda barkeri (Jacoby) (Coleoptera: Chrysomelidae: Alticinae) for the biological control of prickly acacia, Acacia nilotica ssp. indica (Mimosaceae) in Australia. Aust J Entomol. 42: 287-293.
• Lockett CJ, Palmer WA. 2005. Biological control of prickly acacia (Acacia nilotica ssp. indica (Benth.) Brenan): early signs of establishment of an introduced agent. pp 379. In: Sindel, B.M. and Johnson, S.B. (Eds). Proc Fourteenth Australian Weeds Conference. Weed Society of New South Wales, Sydney, Australia.
• Mackey AP. 1997. The biology of Australian weeds. 29. Acacia nilotica ssp. indica (Benth.) Brenan. Pl Prot Qtrly 12: 7-17.
• Marohasy J. 1992. Biocontrol of Acacia nilotica using insects from Kenya. Final report to Australian Wool Corporation. Alan Fletcher Research Station, Queensland Department of Lands, Brisbane, Queensland, Australia.
• Marohasy J. 1995. Prospects for the biological control of prickly acacia, Acacia nilotica (L.) Willd. ex Del. (Mimosaceae) in Australia. Pl Prot Qtrly 10: 24-31.
• Mohyuddin AI. 1981. Phytophages associated with Acacia nilotica in Pakistan and possibilities of their introduction into Australia. pp. 161-166. In: E.S. Del Fosse (Eds.). Fifth International Symposium on Biological Control of Weeds, CSIRO.
• Mohyuddin AI. 1986. Investigations on the natural enemies of Acacia nilotica in Pakistan. Final Report. Rawalpindi, Pakistan: Commonwealth Institute of Biological Control, 116 pp.
• Palmer WA. 1996. Biological control of prickly acacia in Australia. pp. 239-242. In: R.C.H. Shepherd (Ed) Proceedings of the eleventh Australian weeds conference. Weed Society of Victoria, Melbourne, Australia.
• Palmer WA. 2003. Risk analyses of recent cases of non-target attack by potential biocontrol agents in Queensland. pp. 305-309 In: Proceedings of the XI International symposium on biological control of weeds.
• Parsons WT, Cuthbertson EG. 2001. Noxious Weeds of Australia, 2^nd edn. CSIRO Publishing, Melbourne, Australia.
• Senaratne KADW, Palmer WA, Sutherst RW. 2006. Use of CLIMEX modeling to identify prospective areas for exploration to find new biological control agents for prickly acacia. Aust J Entomol. 45: 298-302.
• Spies P, March N. 2004. Prickly Acacia: National Case Studies Manual. Natural Heritage Trust and Department of Natural Resources and Mines, Queensland, Australia.
• Stals R. 1997. A survey of phytophagous organisms associated with Acacia nilotica in South Africa. Final report to the Queensland Department of Natural Resources. ARC-Plant Protection Research Institute, Pretoria, South Africa.
• Thorp JR, Lynch R. 2000. The determination of weeds of national significance. National Weeds Strategy Executive Committee, Launceston, Australia.
• Wardill TJ, Graham GC, Playford J, Zalucki M, Palmer WA, Scott KD. 2005. The importance of species identity in the biocontrol process: identifying the subspecies of Acacia nilotica (Leguminosae: Mimosoideae) by genetic distance and the implications for biological control. J Biogeography 32: 2145-2159.
• Willson BW. 1985. The biological control of Acacia nilotica indica in Australia. pp 849-883. In. Delfosse (Ed). Proc VI Int Symp Biological Control of Weeds, Vancouver, Canada, August, 19-25, 1984. Canada Agriculture, Vancouver, Canada.

• Hydrochemical Evaluation of the Groundwater Quality in Chennai City

Abstract Views :154  |  PDF Views:3

Authors

S. Damodhar Kumar ¹, A. Loganayagi ¹, S. Murugesan ²

Affiliations
1 P.G. and Research Department of Chemistry, Pachaiyappa’s College, Chennai-600 030, T.N., IN
2 P.G. and Research Department of Plant Biology and Biotechnology, Unit of Environmental Biotechnology, Pachaiyappa’s College, Chennai-600 030, T.N., IN

Source

Nature Environment and Pollution Technology, Vol 7, No 2 (2008), Pagination: 235-241

Abstract

The paper deals with physico-chemical analysis of groundwater of Chennai city. The analysis of groundwater was carried out to examine its suitability for drinking purposes. The data generated were compared with reference to BIS and WHO standards. It was found that some of the physico-chemical parameters were within the maximum permissible limits of drinking water standards. The study also reveals that the groundwater of the area is very hard, which was determined by carbonate and bicarbonates ions with calcium and magnesium

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• Quality of Drinking Water in and around Thiruvallur District, Tamil Nadu

Abstract Views :132  |  PDF Views:2

Authors

A. Loganayagi ¹, S. Damodarkumar ¹, S. Murugesan ²

Affiliations
1 P.G. and Research Department of Chemistry, Pachaiyappa’s College, Chennai-600 030, Tamil Nadu, IN
2 P.G. and Research Department of Plant Biology and Biotechnology, Unit of Environmental Biotechnology, Pachaiyappa’s College, Chennai-600 030, Tamil Nadu, IN

Source

Nature Environment and Pollution Technology, Vol 7, No 1 (2008), Pagination: 133-138

Abstract

Water has pivotal role for the survivality of the making in the biosphere. For evolving policies to the best use of water resources, it is important to make an assessment of their magnitude, distribution and scope of utilization. It becomes necessary to have an idea of the present and future demands of water for various purposes. The present study is aimed to establish the water quality of bore wells in and around some parts of Tiruvalluvar district.

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• Identification and Characterization of whey Protein, Casein Micelles and Fat Globules in Cow Milk

Abstract Views :207  |  PDF Views:1

Authors

S. Murugesan ¹, J. Anitalett ¹, S. Sabitha ¹

Affiliations
1 Department of Physics, Sathyabama Insititute of Science and Technology, Jeppiaar Nagar, Rajiv Gandhi Salai, Chennai - 600119, Tamil Nadu, IN

Source

Journal of Surface Science and Technology, Vol 36, No 1-2 (2020), Pagination: 83–88

Abstract

Pasteurized cow milk (whole milk) was used in the present study and also fat was removed from the whole milk to obtain skimmed milk. Whey is the liquid remaining after milk has been curded and strained during the manufacture of cheese. The sample was filtered using a Whatman filter paper to separate the precipitate. The filtrate thus obtained is called whey (devoid of casein and fat). The micrographs of whole milk, skimmed milk and whey were obtained using an inverted phase contrast microscopy. The hydrodynamic size and zeta potential of the samples were obtained using Dynamic light scattering technique. Atomic force microscopy was also performed to understand the surface morphology of whole milk, skimmed milk and whey on mica substrate.

Keywords

Atomic Force Microscopy, Cow Milk, Dynamic Light Scattering Study, Inverted Phase Contrast Microscopy, Skimmed milk, Whole Milk, Whey.

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References

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• Microstructure, Corrosion Resistance and Wettability of Hydroxyapatite and Silver-Doped Hydroxyapatite

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Authors

Deep Shikha ¹, S. K. Sinha ², S. Murugesan ³

Affiliations
1 Department of Chemistry, Birla Institute of Technology Mesra, Ranchi – 835215, Jharkhand, IN
2 Department of Physics, Birla Institute of Technology Mesra, Ranchi – 835215, Jharkhand, IN
3 Indira Gandhi Centre for Atomic Research, Kalpakkam – 603102, Tamil Nadu, IN

Source

Journal of Surface Science and Technology, Vol 37, No 1-2 (2021), Pagination: 23-34

Abstract

In recent years, synthesis and characterization of Ag-based materials has become an active area of research due to its application in medical area for having antimicrobial properties useful for prosthetic replacement. Pure HydroxyAPatite (HAP) and 1.5wt% Ag-doped HydroxyAPatite (AgHAP) were prepared by sol-gel process and characterized. Ca(NO₃)₂.4H₂O was used as source of Ca precursor, P₂O₅ was used as a source of P precursor, and AgNO₃ has been used as a source of Ag precursor. Pellets of HAP and AgHAP were made after precipitates were consolidated, dried in oven, grounded and sintered in a muffle furnace. Functional groups were determined using FTIR, and compound formations were investigated using XRD. Microstructural analysis was done using SEM and AFM. Wettability was studied using OCA in distilled water, and corrosion resistance and impedance analyses were carried out using ECA in Ringer solution. It was observed from AFM and XRD that grain size decreased from 7.05 μm to 1.25 μm. Improvement in corrosion resistance was observed in AgHAP. Wettability studies showed that AgHAP is more hydrophilic in comparison with pure HAP. A correlation between microstructures and properties of hydroxyapetites are discussed in this paper.

Keywords

Ag-Doped HydroxyAPatite (AgHAP), Corrosion Resistance, HydroxyAPatite (HAP), Microstructure, Wettability.

Full Text

     

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